helpp me please i need help ​

Helpp Me Please I Need Help

Answers

Answer 1

The phase changes are;

Fusion- Exothermic

Sublimation  - Exothermic

Condensation - Endothermic

Vaporization - Exothermic

Freezing - Endothermic

What is a phase change?

When a substance changes from one phase or state of matter to another, this is referred to as a phase change. The solid, liquid, and gas states are the three fundamental types of matter. A substance's physical characteristics, including shape, volume, and density, might alter when it goes through a phase shift.

Temperature and pressure variations are the primary causes of phase shifts. The particular conditions necessary for a phase change to take place vary depending on the substance. As phase shifts affect the behavior, properties, and uses of diverse materials

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Related Questions

I HAVE 25 MINUTES TO FINISH True or false the deeper you go into Earth the temperature goes up ?

Answers

Answer:

true

Explanation:

you are getting closer to the core hope this helps!

Write True if the statement is correct and False if it is incorrect.
1. Mosquitos are flies.
2. All large invertebrates live in the
sea or at least in water.
3. An arthropod is a form of arachnid.
4. The giant squid is the world's largest
invertebrate.
5. Earthworms have skeleton
6. The octopus is the most advance of
the mollusks.
7. Insects are vertebrates animals.
8. Starfish have shells.
9. Snails have spiral protective shell.
10. Ants and termites both live in colonies
with a complex social structure.​

Answers

T
F
F
T
F
T
T
F
T
T...............................

A per the statement the true and false have been stated.

The mosquitos are flies is True. All large invertebrates live in the sea or at least in water is False. An arthropod is a form of arachnid. False. The giant squid is the world's largest  invertebrate is true. Earthworms have skeleton is false. An octopus is the most advance of  the mollusks is True. Insects are vertebrates animals is false . Most starfish have shells is true.   All Snails have a spiral protective shell is true. The Ants and the termites both live in their colonies  with a complex social structure true.

Learn more about the statement is correct and False if it is incorrect.

brainly.com/question/25942470.

why metals are good conductor of electricity​

Answers

Explanation:

silver is the best conductor

Answer:

Metals are an excellent conductor of electricity and heat because the atoms in the metals form a matrix through which outer electrons can move freely. Instead of orbiting their respective atoms, they form a sea of electrons that surround the positive nuclei of the interacting metal ions

Fill in the blank with the correct answer to complete the sentence.
Word bank
size
velocity
distance
time
Momentum increases with an increase in mass and​

Answers

Explanation:

momentum increases with an increase in mass and velocity

Examining the equations or equilibrium constants related to a base, salt, or an acid is an indirect way to determine strength of an electrolyte. The strength of an electrolyte can be examined directly by placing a solution into a circuit so that the voltage or amount of current can be measured. Although conductivity refers to the flow of charged species, we usually examine conductivity with respect to resistance. As the name implies, a solution that does not conduct electricity very well also has a very high resistance. If solutions containing various acids, bases, and salts were prepared and connected to a circuit that powers a light bulb, the strength of the electrolyte could be estimated by examining the intensity of the light bulb. Complete the following sentences regarding the experimental determination of the electrolyte strength for various molecules dissolved in solution.
a. strong electrolyte
b. weak electrolyte
c. non-electrolyte
1. A 20 mL solution containing 2 mmol of Ca3(PO4)2(s) was integrated into to a circuit that powers a light but, When the power supply was turned on, the light bulb produced a glow. Ca3(PO4)2(s) is__.
2. A 20 mL, solution containing 2 mmol of C12H22O11(aq) was integrated into a circuit that powers a light bulb. When the power supply was turned on the light bulb remained off. C12H22O11(aq) is___.
3. A 20 mL, solution containing 2 mmol of HF(g) was integrated into to a circuit that power a light bulb. When the power supply was turned on the light bulb faintly flickered. HF(g) is an____.
4. A 20 mL solution containing 2 mmol of LiOH(g) was integrated into to a circuit that power a light bulb. When the power supply was turned on the light bulb produced a bright glow LiOH(s) is a____.

Answers

Answer:

1 - Weak electrolyte

2- Non electrolyte

3- Weak electrolyte

4- Strong electrolyte

Explanation:

A strong electrolyte refers to an electrolyte that decomposes completely in solution. This means that there are more charge carriers in solution when a strong electrolyte is dissolved in water. A strong electrolyte produces a strong glow. LiOH is a strong electrolyte.

A weak electrolyte is not completely dissociated in water. Only a small amount dissociates in water. HF is a weak electrolyte. A weak electrolyte does not produce a bright light.

A non-electrolyte does not dissociate in solution at all hence it does not power a bulb E.g  C12H22O11.

List four kinds of energy. Give a brief definition of each.

Answers

Answer:

Mechanical Energy- Energy that result from movement or the location of the object. Is the sum of kinetic and potential energy.

Thermal Energy- Thermal energy or heat energy reflects the temperature difference between two systems.

Nuclear Energy-  is energy resulting from changes in the atomic nuclei or from nuclear reactions.

Chemical Energy- results from chemical reactions between atoms or molecules.

More:

Kinetic energy- is the energy of motion of a body. It ranges from 0 to a positive value.

Electromagnetic energy- (or radiant energy) is energy from light or electromagnetic waves.

Sonic energy-  is the energy of sound waves. Sound waves travel through the air or another medium.

Gravitational energy- energy associated with gravity involves the attraction between two objects based on their mass.

Ionization energy- is the form of energy that binds electrons to the nucleus of its atom, ion, or molecule.

Potential energy- is the energy of an object's position.

Explanation:

Hope this helps

A 50.0 mL solution of 0.129 M KOH is titrated with 0.258 M HCl. Calculate the pH of the solution after the addition of each of the given amounts of HCl.
A) 0.00ml
B)7.00ml
C)12.5ml
D)18.0ml
E)24.0ml
F)25.0ml
G)26.0ml
H)29.0ml

please show work with steps .

Answers

Answer:

A- pH = 13.12

B- pH = 12.91

C- pH = 12.71

D- pH = 12.43

E- pH = 11.55

F- pH = 7

G- pH = 2.46

H- pH = 1.88

Explanation:

This is a titration of a strong base with a strong acid. The neutralization reaction is: KOH (aq) + HCl (aq) →  H₂O(l) + KCl(aq)

Our pH at the equivalence point is 7, because we have made a neutral salt.

To determine the volume at that point we state the formula for titration:

mmoles of base = mmoles of acid

Volume of base  . M of base = Volume of acid . M of acid

50mL . 0.129M = 0.258 M . Volume of acid

Volume of acid = (50mL . 0.129M) / 0.258 M →  25 mL (Point F)

When we add 25 mL of HCl, our pH will be 7.

A- At 0 mL of acid, we only have base.

KOH → K⁺ + OH⁻

[OH⁻] = 0.129 M

To make more easy the operations we will use, mmol.

mol . 1000 = mmoles → mmoles / mL = M

- log 0.129 = 0.889

14 - 0.889 = 13.12

B-  In this case we are adding, (7 mL . 0.258M) = 1.81 mmoles of H⁺

Initially we have  0.129 M . 50 mL = 6.45 mmoles of OH⁻

1.81 mmoles of H⁺ will neutralize, the 6.45 mmoles of OH⁻ so:

6.45 mmol - 1.81 = 4.64 mmoles of OH⁻

This mmoles of OH⁻ are not at 50 mL anymore, because our volume has changed. (Now, we have 50 mL of base + 7 mL of acid) = 57 mL of total volume.

[OH⁻] = 4.64 mmoles / 57 mL = 0.0815 M

- log 0.0815 M = 1.09 → pOH

pH = 14 - pOH → 14 - 1.09 = 12.91

C- In this case we add (12.5 mL . 0.258M) = 3.22 mmoles of H⁺

Our initial mmoles of OH⁻ would not change through all the titration.

Then 6.45 mmoles of OH⁻ are neutralized by 3.22 mmoles of H⁺.

6.45 mmoles of OH⁻ - 3.22 mmoles of H⁺ = 3.23 mmoles of OH⁻

Total volume is: 50 mL of base + 12.5 mL = 62.5 mL

[OH⁻] = 3.23 mmol / 62.5 mL = 0.0517 M

- log  0.0517 = 1.29 → pOH

14 - 1.11 = 12.71

D- We add (18 mL . 0.258M) = 4.64 mmoles of H⁺

6.45 mmoles of OH⁻ are neutralized by 4.64 mmoles of H⁺.

6.45 mmoles of OH⁻ - 4.64 mmoles of H⁺ = 1.81 mmoles of OH⁻

Total volume is: 50 mL of base + 18 mL = 68 mL

[OH⁻] = 1.81 mmol / 68 mL = 0.0265 M

- log  0.0265 = 1.57 → pOH

14 - 1.57 = 12.43

E- We add (24 mL . 0.258M) = 6.19 mmoles of H⁺

6.45 mmoles of OH⁻ are neutralized by 6.19 mmoles of H⁺.

6.45 mmoles of OH⁻ - 6.19 mmoles of H⁺ = 0.26 mmoles of OH⁻

Total volume is: 50 mL of base + 24 mL = 74 mL

[OH⁻] = 0.26 mmol / 74 mL = 3.51×10⁻³ M

- log  3.51×10⁻³  = 2.45 → pOH

14 - 2.45 = 11.55

F- This the equivalence point.

mmoles of OH⁻ = mmoles of H⁺

We add (25 mL . 0.258M) = 6.45 mmoles of H⁺

All the OH⁻ are neutralized.

OH⁻  +  H⁺  ⇄   H₂O              Kw

[OH⁻] = √1×10⁻¹⁴   →  1×10⁻⁷  →  pOH = 7

pH → 14 - 7 = 7

G- In this case we have an excess of H⁻

We add (26 mL . 0.258M ) = 6.71 mmoles of H⁺

We neutralized all the OH⁻ but some H⁺ remain after the equilibrium

6.71 mmoles of H⁺ - 6.45 mmoles of OH⁻ = 0.26 mmoles of H⁺

[H⁺] = 0.26 mmol / Total volume

Total volume is: 50 mL + 26 mL → 76 mL

[H⁺] = 0.26 mmol / 76 mL → 3.42×10⁻³ M

- log 3.42×10⁻³ = 2.46 → pH

H- Now we add (29 mL . 0.258M) = 7.48 mmoles of H⁺

We neutralized all the OH⁻ but some H⁺ remain after the equilibrium

7.48 mmoles of H⁺ - 6.45 mmoles of OH⁻ = 1.03 mmoles of protons

Total volume is 50 mL + 29 mL = 79 mL

[H⁺] = 1.03 mmol / 79 mL → 0.0130 M

- log 0.0130 = 1.88 → pH

After equivalence point, pH will be totally acid, because we always have an excess of protons. Before the equivalence point, pH is basic, because we still have OH⁻ and these hydroxides, will be neutralized through the titration, as we add acid.

The pH value is given by 14 less the logarithm of the hydronium ion

concentration or the hydrogen ion concentration in the solution.

Responses (approximate values):

The pH values are;

A) 13.11

B) 12.91

C) 12.71

D) 12.42

E) 11.54

F) 7

G) 2.469

H) 1.884

Which is used to find the pH of the solution?

A) Concentration of the KOH = 0.129 M

Amount of HCl added = 0.00 ml

The pH = -log[H⁺] = 14 - pOH

pOH = -log[OH⁻]

Which gives;

pH = 14 - (-log[OH⁻] )

pH = 14 - (-log(0.129)) ≈ 13.11

B) Volume of acid added = 7.00 mL = 0.007 L

Concentration of the acid = 0.258 M HCl

Number of moles of acid, H⁺ = 0.007 × 0.258 moles = 0.001806 moles

Number of moles of KOH remaining, OH⁻= 0.05 × 0.129 - 0.001806 = 0.004644

Number of moles of OH⁻ = 0.004644 moles

[tex]Concentration, \ [OH^-] = \dfrac{0.004644 \, moles}{0.05 7 \, L} \approx \mathbf{ 0.0815 \, M}[/tex]

pH of solution = 14 - (-log(0.0815)) ≈ 12.91

C) 12.5 mL HCl contains, 0.0125 × 0.258 moles = 0.003225 moles

OH⁻ remaining = 0.05 × 0.129 - 0.003225 = 0.003225 moles

[tex]Concentration \ of \ [OH^-]= \dfrac{0.003225\, moles}{(0.05 + 0.0125) \, L} = \mathbf{0.0516 \, M}[/tex]

pH of solution = 14 - (-log(0.0516)) ≈ 12.71

D) 18.0 mL HCl contains, 0.018 × 0.258 moles = 0.004644 moles

OH⁻ remaining = 0.05 × 0.129 - 0.004644 = 0.001806 moles

[tex]Concentration \ of \ [OH^-] = \dfrac{0.001806\, moles}{(0.05 + 0.018) \, L} \approx \mathbf{0.0266\, M}[/tex]

pH of solution = 14 - (-log(0.0266)) ≈ 12.42

E) 24.0 mL HCl contains, 0.024 × 0.258 moles = 0.006192 moles

OH⁻ ion remaining = 0.05 × 0.129 - 0.006192 = 0.000258 moles

[tex]Concentration \ of \ [OH^-] = \dfrac{0.000258\, moles}{(0.05 + 0.024) \, L} \approx \mathbf{0.0035\, M}[/tex]

pH of solution = 14 - (-log(0.0035)) ≈ 11.54

F) 25.0 mL HCl contains, 0.025 × 0.258 moles = 0.00645 moles

[OH⁻] remaining = 0.05 × 0.129 - 0.00645 = 0 moles

[tex]Concentration \ of \ [OH^-] = \dfrac{0\, moles}{(0.05 + 0.024) \, L} \approx 0\, M[/tex]

Therefore;

Number of moles of KOH = 0, or the solution is neutralized

[OH⁻] = [H⁺]

Which gives;

pH = pOH = 7

G) 26.0 mL HCl contains, 0.026 × 0.258 moles = 0.006708 moles

[OH⁻] remaining = 0.05 × 0.129 - 0.006708 = -0.000258 moles

Therefore

Number of moles of H⁺ = 0.000258

[tex]\mathbf{Concentration} \ of \ \mathbf{[H^+] }= \dfrac{0.000258\, moles}{(0.05 + 0.026) \, L} \approx 0.003395\, M[/tex]

pH of solution = (-log(0.003395)) ≈ 2.469

H) 29.0 mL HCl contains, 0.029 × 0.258 moles = 0.007482 moles

H⁺ remaining = 0.007482 - 0.05 × 0.129 = 0.001032 moles

Therefore

Number of moles of H⁺ = 0.001032

[tex]Concentration \ of \ [H^+] = \mathbf{ \dfrac{0.001032\, moles}{(0.05 + 0.029) \, L}} \approx 0.01306\, M[/tex]

pH of solution = (-log(0.01306)) ≈ 1.884

Learn more about the pH of a solution here:

https://brainly.com/question/1195974

how many oxygen (0) atoms are in a molecule C3H4O3

Answers

Answer: 3

Explanation: A P E X

Would you expect a reaction to occur with Hydrogen gas and Copper (II) chloride?

Answers

Yes

The copper itself can react with hydrogen

Here is the chemical reaction

2CuCl2(aq) + H2(g) -> 2CuCl(s) + 2HCl(g)

Looking at the following equation, which is the correct order of coefficients?

NH3 + O2 --> NO + H2O

Answers

2NH3 + 302---> 2NO + 3H20

What is a mixture of two insoluble mixtures called​

Answers

Answer:

Emulsion

Explanation:

Emulsion is a special type of mixture formed by combining two liquids that do not normally mix. An example of emulsion is;

Oil and Water

Please help quickly as possible thank you :) ​

Answers

When an object/liquid/food etc contains hot energy, the heat particles are moving around causing the heat. 8ounces of soup would cool off faster, because there is less liquid for the heat particles to be in, there for less heat particles, therefore cooling off faster. Pls give Brainliest, and good luck!

Ce clasă ești sa văd daca te pot ajuta

what the the noble gas configuration for krypton

Answers

Answer:

[Ar] 3d¹⁰ 4s² 4p⁶

Explanation:

Krypton is a chemical element with the symbol Kr and atomic number 36. It is a colorless, odorless, tasteless noble gas that occurs in trace amounts in the atmosphere and is often used with other rare gases in fluorescent lamps. With rare exceptions, krypton is chemically iner,

A combustion reaction involves the reaction of a substance with oxygen gas. The complete combustion of any hydrocarbon (binary compound of carbon and hydrogen) produces carbon dioxide and water as the only products. Heptane is a hydrocarbon that is found in gasoline. Complete combustion of heptane produces 7 liters of carbon dioxide for every 8 liters of water vapor (both measured at the same temperature and pressure). What is the ratio of carbon atoms to hydrogen atoms in a molecule of heptane

Answers

Answer:

7/16

Explanation:

The general formula for the combustion of alkanes is;

CnH2n+2 + 3n+1/2 O2  -------> nCO2 + (n+1)H2O

So, we have;

CnHn + nO2 ------> 7CO2 + 8H2O

So there are 7 carbon atoms and 16 hydrogen atoms in heptane according to the law of conservation of mass.

Therefore, heptane is; C7H16

The ratio of carbon to hydrogen is now; 7/16

515282 quarts into milliliters. I

Answers

Answer:

487638640,7819

dndndnndndbxbdbdbdbdb

The law that states when different compounds are formed by a combination of the same elements, different masses of one element combine with the same fixed to other elment

Answers

Answer:

The law of multiple proportions states that whenever the same two elements form more than one compound, the different masses of one element that combine with the same mass of the other element are in the ratio of small whole numbers.

I agree with the answer top

Two identical spoons are electroplated with Ag or Cd through the use of the electrolytic cells. A current of 5.00A was supplied to each cell for 600. seconds, and the masses of the spoons before and after the electroplating were recorded. Write down the mathematical equations can best be used to account for the much larger increase in mass of the spoon electroplated with Ag compared with the spoon electroplated with Cd.

Answers

Answer:

Explanation:

One farad of charge is capable of depositing one gram equivalent of a metal

One gram equivalent of Ag = 108 grams

One gram equivalent of Cd = 112 / 2  grams

= 56 grams . [ for cadmium equivalent mass = atomic mass / s ]

electric charge flowing = current x time = 5 x 600 = 3000 coulomb

one farad = 96500 coulomb

96500 coulomb  deposits 108 gram of Ag

3000 coulomb deposits 108 x 3000 / 96500 gram

= 3.35 grams of Ag

Similarly ,

96500 coulomb  deposits 56 gram of Cd

3000 coulomb deposits 56 x 3000 / 96500 gram

= 1.74  grams of Cd

So there will be much larger increase in the spoon of Ag due to larger deposit of Ag by charge .

Connor turns on a hair dryer to style his hair in the morning. Which choice identifies all of the energy transformations in the system?
electrical -- heat sound, and motion
electrical -- sound and motion
heat-electrical and sound
heat and sound -motion

Answers

Answer:

It is electrical → heat, sound, and motion

because a hair dryer makes heat to dry your hair and sound is the blowing and motion is how it goes

Explanation:

Answer:

A

Explanation:

electrical -- heat sound, and motion

How many pounds of ice are required to absorb 4900 kJ of heat as the ice melts? The heat of fusion of water is 0.334 kJ/g.


help pls

Answers

Answer:

Q = ΔH fusion * mass (g)

when we have:

ΔH fusion (the heat (or enthalpy) of fusion = 0.334 kJ/g

and mass of ice = 22.4 g  

so by substitution, we can get the energy (Q) required to melt this mass of ice:

∴ Q = 0.334KJ/g * 22.4 g  

      = 7.48 KJ

∴ the energy required to melt 22.4 g of ice is = 7.48 KJ

Explanation:

This is the chemical formula for the compound calcium chloride: CaCl2

In this compound, how many atoms are combined?
O1
02
O3
O4

Answers

Answer:

3

Explanation:

1 Calcium atom and two chlorine atoms

Can someone help me with these two?

Answers

Answer:

adding

opposite

Explanation:

dont blame me if u get them wrong

Answer:

first one is adding i belive and second one is opposite

Explanation:

Which gas is described incorrectly in the passage?
(The answer choices are the capitalized words)

Gases such as carbon dioxide, nitrogen, and oxygen are constantly recycled in the atmosphere through different processes. For example, plants absorb CARBON DIOXIDE and releases OXYGEN during photosynthesis. On the other hand, plants and animals both take in oxygen and release CARBON DIOXIDE is removed from the atmosphere by the process of rock weathering.

Answers

Answer:

Nice

Explanation:

Salt of a weak acid with strong base When
dissolved in water gives?​

Answers

Answer:

it gives base, it is process of neutralization,when acid reacts with base it gives salt and water

Fill in the [?]: 5,481 g = [?] lb. ​

Answers

Answer:

12.084 lb

Explanation:

1 gram = 0.00220462 lb

multiply number of grams by 0.00220462

Ex. 2000 g x 0.00220462 = 4.409 pounds

Use the Nernst equation to calculate the concentration of the unknown solution. Base this on your experimental voltage of 1.074 V for the galvanic cell with this unknown combined with your copper half-cell. Use the unrounded [Cu2+] value of .050179 M and the unrounded value of the constants as listed in the file link near the top of this assignment to avoid round-off error.

Answers

Answer:

0.3793 M

Explanation:

The unknown metal is zinc. So the equation of the reaction is;

Zn(s) + Cu^2+(aq) -------> Zn^2+(aq) + Cu(s)

From Nernst equation;

E = E° - 0.0592/n log Q

[Cu2+] = 0.050179 M

n = 2

[Zn^2+] = ?

E = 1.074 V

E° = 0.34 - (-0.76) = 1.1 V

Substituting values;

1.074  = 1.1 - 0.0592/2 log [Zn^2+]/0.050179

1.074 - 1.1 = - 0.0592/2 log [Zn^2+]/0.050179

-0.026 = -0.0296  log [Zn^2+]/0.050179

-0.026/-0.0296 = log [Zn^2+]/0.050179

0.8784 =log [Zn^2+]/0.050179

Antilog(0.8784) = [Zn^2+]/0.050179

7.558 =  [Zn^2+]/0.050179

[Zn^2+] = 7.558 * 0.050179

[Zn^2+] = 0.3793 M

A Period 2 element has the following successive ionization energies. Identify the element...

1st: 1087 kJ/mol

2nd: 2353 kJ/mol

3rd: 4621 kJ/mol

4th: 6223 kJ/mol

5th: 37832 kJ/mol

6th: 47279 kJ/mol

7th: 55261 kJ/mol

8th: 69875 kJ/mol

Answers

Answer:

9th:08473 kJ/mol

Explanation:

HAHAHAHAHAHAHAHAHAHA

What is the solar radius of a main sequence star?

Answers

Answer:I'm going to give some fictitious values just so that we can get some perspective on the matter.

Let's say that the surface temperature of our sun is 10, the surface temp of the bigger star- the red giant formed from leaving the main sequence, has a temp of 0.2. of that- 2.

We can also say that the radius of our sun is 10, and the radius of the red giant is 1000. (100 times more)

Using the equation:

L

=

σ

A

T

4

σ

= The Stefan-Boltzmann constant =

5.67

×

10

8

But we can ignore the constant, as we are only interested in a ratio of these values.

L

S

u

n

=

4

π

(

10

)

2

×

10

4

=

1.26

×

10

7

L

S

t

a

r

=

4

π

(

1000

)

2

×

2

4

2.01

×

10

8

2.01

×

10

8

1.26

×

10

8

16

So the newly formed, red giant star is almost 16 times more luminous than the sun. This is owing to the increased surface area of the star due to the massively increased radius.

A small sidenote:

There is an equation that might be useful for comparing the radii, temperature and luminosity of main sequence stars. As red giants are not on the main sequence it could not be used here, but if you stumble across a question where they ask you to find the radius, luminosity or temperature given the other two, you can relate it to the sun's characteristics:

r

s

t

a

r

r

s

u

n

=

L

s

t

a

r

L

s

u

n

×

(

T

s

u

n

T

s

t

a

r

)

2

(I know, it's not a beauty to look at- but it works)

Where

X

s

u

n

is the radius, temperature, and luminosity of the sun. These are not often given in numerical values, but this equation serves well when asked to find e.g the radius of a star, in solar radii given that a star is twice as luminous and has 5 times the temperature of that of the sun.

Hence:

T

s

t

a

r

=

5

T

s

u

n

L

s

t

a

r

=

2

L

s

u

n

r

s

t

a

r

r

s

u

n

=

2

L

s

u

n

L

s

u

n

×

(

T

s

u

n

5

T

s

u

n

)

2

(cancel the common terms)

r

s

t

a

r

r

s

u

n

=

2

×

(

1

5

)

2

r

s

t

a

r

0.057

r

s

u

n

(divide both sides by 0.0057)

17.5

r

s

t

a

r

r

s

u

n

So the star's radius is almost 17.5 times that of the sun.

Hopefully, you find this info useful!

Explanation:

Mixing hydrochloric acid and sodium hydroxide is an example of an exothermic
reaction. This means...
Select one
energy is taken in during the chemical reaction
hydrochloric acid and sodium hydroxide are the products of the reaction
Energy released during the chemical reaction
There is no change in energy during the chemical reaction

Answers

Answer:

exothermic means that energy was released during the chemical reaction

Explanation:

structure of 2,6-diiodo-4-methyl-5-propylheptane​

Answers

Answer:

diiodo????

Explanation:

recheck the question and resend

How does ice float on water?

Why does solid ice float on liquid water?

Answers

Answer:

Explanation:

Solid ice floats over water because ice is less dense than liquid water, or weighs less, by about 10%, than liquid water

Other Questions
"allies of skin mandelic pigmentation corrector night serum" how does this company advertise its products? What is the nominal rate compounded quarterly is equivalent to an effective rate of 17 %? Help if you can please !! A technician is working at a tire installation shop and is constantly using an impact gun that produces 100 decibels. What type of protection is recommended to be worn? A flower bed is in the shape of a rectangular prism. Its dimensions are 3 feet wide by 16 feet long by 6 inches deep.a. How many cubic feet of topsoil do you need to fill the flower bed?b. You can spread topsoil at a rate of 4 cubic feet per minute. How long will it take youto spread all the topsoil? us authorities have returned an ancient sarcophagus that was looted from which country? What is the difference between a cost and opportunity cost? The car travels at a constant speed. After 6 seconds, it travels 180 meters.Write a proportional equation to find the car's distance, d, at any time, The first and second terms of an exponential sequence (G.P.) are the first and third terms of a linear sequence (A.P.). The fourth term of the linear sequence is 10 and the sum of its first five terms is 60. Find the first four terms of the linear sequence. What are the measurements of questions 1,2 and 3 Reread the underlined part of the poem an page 2. What do these lines reveal about the speaker?A. The speaker believes that love is eternal B. The speaker accepts that love is unrealC. The speaker imagines loving someone elseD. The speaker regrets loving less fully in life How doe etting affect the character of Mr. Price in the paage? Anwer option with 4 option 1. Mr. Price feel elf-conciou about the way in which her omewhat habby appearance i viewed by the people of Portmouth. 2. Although Mr. Price ha friend in Portmouth, he i aware that he i le popular and le attractive than her iter, Lady Bertram. 3. Depite her poor circumtance, the town with it Sunday ociety, rampart, and neighbor provide an outlet and revive Mr. Price. 4. On Sunday, Mr. Price i able to put aide her fear about her children running into danger and enjoy the company of like-minded ociety while the penumbra of a sunspot can "grow" and become bigger. What do you think this means? What is the significance of it for us on Earth Helpppppppppppppppppp pleade Which of the following statements is not valid when the market supply curve is vertical?a. An increase in market demand will increase the equilibrium quantity.b. Supply is perfectly inelastic.c. Market quantity supplied does not change when the price changes.d. An increase in market demand will increase the equilibrium price. 1. Los pasajeros hacen cola en (el asiento, la puerta)de salida.2. Estn (esperando, haciendo) la salida del vuelo.3. El avin sale con un retraso de cinco minutos. Sale (tarde,a tiempo).4. Los pasajeros toman su (pasillo, asiento) en el avin.5. El avin despega de la (cola, pista).5. Un vuelo (procedente de, con destino a) Panam llegaahora. Mr. And mrs. Ozawa are driving their family to a vacation spot 496496 miles away. They want to get there in 88 hours. What is the average speed they need to drive?. The undergraduategrade pointaverages (UGPA) of students takingan admissions test in a recent yearcan be approximated by a normaldistribution, as shown in the figure.(a) What is the minimum UGPA thatwould still place a student in the top10% of UGPAS?(b) Between what two values does themiddle 50% of the UGPAS lie?Mean=3.24Std.=0.17 What is the main agricultural export of brazil, argentina, and uruguay? Is x 8 a factor of the function f x 2x3 17x2 64?