Choose all the answers that apply

The boiling point of water is ___

A. 100°C
B. 100°F
C. 212°C
D. 212°F

PLEASE HURRY I NEED THE ANSWER FAST ​

Answers

Answer 1

Answer:

a and d but were in America so d


Related Questions

a chemical reaction occurs when blank

Answers

Answer:

When atoms are formed or broken.

Explanation:

The substances that go into a chemical reaction are called the reactants, and the substances produced at the end of the reaction are known as the products.

Elements in the periodic table are arranged in order of increasing atomic mass?

True or false

Answers

It’s true because the chemical elements are arranged from left to right and top to bottom in order of increasing atomic number, or the number of protons in an atom's nucleus, which generally coincides with increasing atomic mass.

H3PO4 +CaCOH)2=Ca3(PO4)2+H20
The equation balance

Answers

Answer:

2H3PO4 +3Ca(OH) 2 = Ca3 (PO4) 2 +6H20

0. 01 M HCl solution has a pH of 2. Suppose that during the experiment, both the universal pH indicator and the cabbage indicator turn orange-red for 0. 01 M HCl. What can you conclude about the the cabbage indicator key? It matches the universal pH indicator and is indicating the proper pH. It should completely match the universal indicator key for all pH values greater than 7 (base). It should completely match the universal indicator key for all pH values. There was some sort of experimental error, because the indicators should never match.

Answers

Answer:

a.) It matches the universal pH indicator and is indicating the proper pH.

Explanation:

it says its the answer.

Answer:

Explanation:

An object is thrown vertically from the ground upwards with a speed of 10 m/s. Considering g = 10 m/s2, the maximum height that the object reaches from the ground, in meters, will be:

a) 15.0.

b) 10.0.

c) 5.0.

d) 1.0.

e) 0.5.

9) A solid magnesium flare has a mass of 2300 g and a volume of 703 cm3. What is the density of the
g
magnesium?

Answers

Answer:

siks creo que creo que siks

Which group of 3 elements are in the 3d sublevel?
Silicon (Si), Phosphorus (P), Chlorine (CI)
Vanadium (V). Nickel (Ni), Iron (Fe)
Zinc (Zn). Palladium (Pd). Osmium (76)
Arsenic (As), Zinc (Zn). Calcium (Ca)

Answers

I believe the answer to your questions it’s going to be the first choice.If I’m not mistaking.

How many moles are in 13.0g of potash (KOH)?

Answers

Answer:

0.232 moles

Explanation:

because the mass is 13.0g and the relative molecular mass is 56.1049

What is the chemical equation for the decomposition reaction of sulphuric acid?

Answers

H2SO4 = H2O + SO3 | Chemical reaction and equation.

Jim needs to conduct his experiment at STP
Which condition must he use?
0 273 K, 101.3 kPa
100 K, 273 kPa
O 100 K, 273 Pa
O 273 K, 101.3 Pa

Answers

Answer:

273 K, 101.3 kPa

Explanation:

the standard pressure he can use is 101.3 kPa and standard temperature= 273 K

How do I balance _Zn+_HCl➡️_ZnCl_+H2

Answers

Answer:

Zn+2HCL➡️ZnCl2+H2

Explanation:

1 zn+ 2 hcl ➡️ 1 zn +2cl and 2 hcl(2hcl)

How do multiple bonds affect the shape of a molecule?.

Answers

Answer:

hyprogenic

Explanation:

hope it's help

make me brainless tyy

Which of the following is an example of a phase change from liquid to gas?
A. Water freezing
B. Ice melting
C. Water evaporating
D. Water condensing
SUBMIT
Apex ?

Answers

C.Water evaporating is the correct answer
You can go for it

Which of the following could occur as a result of
decreasing the heat energy of a gas?
A. condensation
B. evaporation
C. radiation
D. vaporization

Answers

The answer is A) condensation

Answer:

A

Explanation:

Because, condensation occurs due to the drop in the temperature of the gas therefore turning into liquid.

What was the first animal on the endangered species list?
bald eagle
Great white shark
Saber tooth tiger
humpback whale

Answers

Answer:

Saber tooth tiger

Explanation:

Saber tooth tiger is pretty dangerous and around the world are few meaning were killed

A weather balloon containing 59.5 L of helium is released at sea level, where the atmospheric pressure is 101.3 kPa. When it gets to an altitude of 4000 m above sea level, the pressure is only 61.7 kPa. What volume will the balloon now occupy, assuming the temperature is the same?

Pls SHOW WORK

Answers

Answer:

V2 = 97.7 L

Explanation:

The solve this question, we need to follow the equation below

P1V1 = P2V2

V1 = 59.5L

P1 = 101.3 kPa (because 1 atm equals 101.3 kPa so this one we don't have to do anything) = 1 atm

P2 = 61.7 kPa (must be converted to atm by dividing by 101.3) = 0.609 atm

V2 = ?

P1V1 = P2V2

1 x 59.5 = 0.609 x V2

59.5 = 0.609 x V2

(Dividing both sides by 0.609 to get rid of it)

V2 = 97.7 L

Which element has chemical properties that are most similar to the chemical properties of sodium?

Answers

Answer:

Lithium

Explanation:

So, the elements with similar properties to sodium (Na) are all of those elements in the same Group. The ones "most" similar would be the ones closest in mass as well. Those would be Lithium (Li) and Potassium (K)

that is the one i need help with ​

Answers

Answer:

79

Explanation:

This is the answer I نخل جکڑ disparity disguising

What’s the answer ????

Answers

Answer: For disadvantages, 1,2, and 3.

Answer is 1,2,3 I had the same questions

hello people ~
Which of the reactions is used in black and white photography?

(a) Combination Reaction

(b) Decomposition Reaction

(c) Displacement reaction

(d) Oxidation reaction

Answers

Answer:

B. Decomposition reaction

Explanation:

When silver chloride is kept in the sun, it decomposes to form chlorine gas and silver. As the reaction proceeds, the white coloured silver chloride turns grey because of the formation of silver. Chlorine produced in the reaction escapes into the environment as it is produced in the gaseous state.

2AgCl(s) + light → 2Ag(s) + Cl²(g)

As the above reaction is sensitive to light, they are used in black and white photograph.

A sample of argon gas is at a temperature of 20 degrees celsius. The temperature is increased to 30 degrees celsius so that the volume is now 373 mL. What was the original volume?

Answers

The original volume is equal to 248.6 mL.

General gas law

To find the value of pressure, volume or temperature of a gas after a transformation, one must use the general gas law:

                                                [tex]\frac{P_1 V_1}{T_1} =\frac{P_2 V_2}{T_2}[/tex]

Thus, as the pressure does not change, it is enough to substitute the values ​​in the above formula, such that:

                                               [tex]\frac{V_1}{20}=\frac{373}{30} \\ V_1 = 248.6mL[/tex]

So, the original volume is equal to 248.6 mL.

Learn more about gas law in: brainly.com/question/1190311

How does the mass of each atom compare to the average atomic mass of the
element given in the periodic table? *

Answers

The mass given in the periodic table is a weighted average of all isotopes of an element. For example Hydrogen is normally just one proton so one would expect its atomic mass to be exactly 1, but there are other naturally occurring isotopes of H (deuterium with a mass of 2 and tritium with a mass of 3)  that have more neutrons resulting in a weighted average slightly greater than 1.

The mass of the atoms is given by the number of neutrons and protons. The mass of the atom and the average mass of the element looks a little different due to mass defect.

What is a mass defect?

The mass defect has been the difference in the mass and the average mass of the elemental atom. It has been the energy that binds the neutrons and the protons together in the nucleus. The mass and the average atomic mass differ slightly.

The mass of an individual atom differs from the average atomic mass as average atomic mass is the sum of the masses of the isotope of the elements. Isotopes have little difference in masses due to the number of neutrons. For example mass and average atomic mass of hydrogen differs.

Therefore, the mass and the average atomic mass differ.

Learn more about the mass defects, here:

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What is conduction? (4 points)
a Transfer of heat through circular movement
b Transfer of heat through direct physical contact
c Transfer of heat through electromagnetic waves
d Transfer of heat through the movement of particles

Answers

Answer:

Your Answer would be Option B

Answer:

B

Explanation:

The Answer is B-Transfer of heat through direct physical contact

11
A 1 mole sample of hydrogen gas has the same number of hydrogen atoms as a 2 mole
sample of water molecules (H20).

Answers

Answer:

what is the question in this case

The number of atoms in one mole of hydrogen is 6.022 × 10²³. 2 moles of water contains 4 moles of hydrogen  thus, 1.2 × 10²⁴. Hence, the statement is false.

What is one mole?

Any substance containing 6.022 × 10²³ number of atoms is called one mole of the substance. This number is called Avogadro number. Therefore one mole of every elements contains Avogadro number of atoms.

Thus, one mole of hydrogen gas contains 6.022 × 10²³ H₂.

One  mole of water contains  6.022 × 10²³  water molecules. One water molecule is made of two hydrogens and one oxygens. One mole of water contains 6.022 × 10²³  molecules.

Therefore, two moles of water contains 2 × 6.022 × 10²³ = 1.2 × 10²⁴  H₂ Therefore, the number of hydrogen atoms in one mole of  H₂ gas and two moles of water are not equal.

To find more on Avogadro number, refer here:

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Zinc reacts with Vibranium (II) chloride to produce zinc chloride and Vibranium. Write the word equation for this reaction.

Answers

Answer:

The net reaction is Zn(s) + 2H +(aq) → Zn2+(aq) +H 2(g) The Cl− ions are spectators - they don't change. This experiment includes the reaction of zinc with hydrochloric acid.

Answer:

Explanation:

An object is thrown vertically from the ground upwards with a speed of 10 m/s. Considering g = 10 m/s2, the maximum height that the object reaches from the ground, in meters, will be:

a) 15.0.

b) 10.0.

c) 5.0.

d) 1.0.

e) 0.5.

HELP!!!!!

Find the volume of a gas at STP (STP is 0oC and 1atm), if its volume is 80.0 mL at 109 kPa and –12.5oC.

(I will give brainliest. Thank you so much!)

Answers

Answer:

90.6 mL.

Explanation:

Recall the ideal gas law:

[tex]\displaystyle PV = nRT[/tex]

Where P is the pressure; V is the volume; n is the number of moles of gas; R is the universal gas constant; and T is the absolute temperature.

Because only P, V, and T changes, we can rearrange the equation to:
[tex]\displaystyle \frac{PV}{T}= nR[/tex]

The right-hand side is some constant. In other words:

[tex]\displaystyle \frac{P_1V_1}{T_1} = \frac{P_2V_2}{T_2}[/tex]

The initial measurements are 109 kPa, -12.5 °C, and 80.0 mL.

Convert kPa to atm:
[tex]\displaystyle 109\text{ kPa} \cdot \frac{1\text{ atm}}{101.3 \text{ kPa}} = 1.08\text{ atm}[/tex]

And convert temperature to kelvins:

[tex]\displaystyle T_k = (-12.5) + 273.15 = 260.6\text{ K}[/tex]

STP is given by 1 atm pressure and 0 °C (273.15 K). Hence, substitute:
[tex]\displaystyle \frac{(1.08\text{ atm})(80.0\text{ mL})}{(260.6\text{ K})} = \frac{(1\text{ atm})V_2}{(273.15\text{ K})}[/tex]

Solve for volume:
[tex]\displaystyle V_2 = 90.6\text{ mL}[/tex]

In conclusion, the volume of the gas at STP is 90.6 mL.

Check: Volume is indirectly proportional to pressure and directly proportional to temperature. Because we decreased the pressure (1.08 atm to 1.00 atm) and increased the temperature (260.6 K to 273.15 K), we should expect an overall increase in volume.

How many moles of oxygen gas would be needed to react with 155 g of propane gas,
C3Hg, in a combustion reaction?
C3H8 (g) + 502 (g)
+
-> 3CO2 (g) + 4H20 (1)

Answers

Taking into account the reaction stoichiometry, 17.61 moles of O₂ is required to react with 155 grams of C₃H₈.

Reaction stoichiometry

In first place, the balanced reaction is:

C₃H₈ + 5 O₂  → 3 CO₂ + 4 H₂O

By reaction stoichiometry (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

C₃H₈: 1 mole O₂: 5 moles CO₂: 3 moles H₂O: 4 moles

The molar mass of the compounds is:

C₃H₈: 44 g/moleO₂: 32 g/moleCO₂: 44 g/moleH₂O: 18 g/mole

Then, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:

C₃H₈: 1 mole ×44 g/mole= 44 gramsO₂: 5 moles ×32 g/mole= 160 gramsCO₂: 3 moles ×44 g/mole= 132 gramsH₂O: 4 moles ×18 g/mole= 72 grams

Mass of O₂ required

The following rule of three can be applied: if by reaction stoichiometry 44 grams of C₃H₈ react with 5 moles of O₂, 155 grams of C₃H₈ react with how many moles of O₂?

[tex]moles of O_{2} =\frac{155 grams of C_{3} H_{8}x5 moles of O_{2} }{44 grams of C_{3} H_{8}}[/tex]

moles of O₂= 17.61 moles

Finally, 17.61 moles of O₂ is required to react with 155 grams of C₃H₈.

Learn more about the reaction stoichiometry:

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How many grams of FeS are formed from 7.62g of Fe reacted with excess S?

Answers

Answer:

12.2g

Explanation:

I took the quiz :)

Phosphatidic acid is converted into diacylglycerol via _______, which catalyzes removal of a phosphate group.

Answers

Answer:

phosphatase

Explanation:

A pond has the dimensions of 25 meters long by 20 meters wide. If there are 100 frogs living in the pond, what is the "population density" of the frogs?
A. 0.2frogs/sq meter
B. 0.5 frogs/sq meter
C. 2 frogs/sq meter
D. 5 frogs/sq meter

HELPP its a test!

Answers

Answer:

D. 5 frogs/sq meter

Explanation:

what kind of bond is present in HCI

Answers

Explanation:

HCL is a binary compound consiting of two atom a Hydrogen and a chlorine atom both of these and non-metallic atom and so will from a covalent bond between them

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