Answer:
it is the Sparta ruined Athens’s farmland to try to get Athens to fight on farm land
Explanation:
just did
Answer:
the answer is B
Explanation:
A airliner has an internal pressure of 1.00 ATM and temperatures of 25°C at take off if the temperature of the airlines routes to 17°C during the flight what is the new cabin pressure
Answer:
Explanation:
Using Gay lussac's law equation as follows;
P1/T1 = P2/T2
Bainliest. Mole Conversion
Using dimensional analysis determine how many moles are present in 125g of Oxygen gas. O = 16.0 g/mol (3 sig figs)
Answer:
125g × 1 mol/16 grams = 7.81 × avogadros #
Please help quickly! i will mark brainliest
Answer:
Energy of the Reactant: increases
Energy of the product: not at all
Rate of reaction: increases
Enthalpy: not at all
Activation energy: decreases
Explanation:
Catalyst is a substance that increases the rate of reaction than normal to form a product.
Catalyst affect differently to different factors of reaction. A catalyst is meant to increase rate of reaction by lowering the activation energy, so that collision between reactant increase and that passes the energy barrier to form the product faster.
Catalyst has no effect on Enthalpy as change in enthalpy only depends on the chemical compositions of the reactants and products.
Catalyst also increases energy of reactant so that they can collide faster than before and do not affect the energy of product at all.
Hence, the correct answer is:
Energy of the Reactant: increases
Energy of the product: not at all
Rate of reaction: increases
Enthalpy: not at all
Activation energy: decreases
The graph shows the changes in the phase of ice when it is heated which of the following temperatures describes the value of A
Answer:
Less than 0 °C, because B represents the temperature at which ice melts.
Explanation:
Answer: b. 100 °C, because it is the boiling point of water.
Explanation: i got it right on the test
Wow! The future is amazing. Wormholes allow travel to distant planets in a flash. In fact, you can vacation just about anywhere in the universe. I’ve been scoping out one planet in particular. The brochure says it has warm oceans, giant beaches, and incredible scenery, like nothing you’d see on Earth. The resort I want to go to is located in the planet’s Southern Hemisphere, and I want to make sure I go at the right time. Maybe you can help me. Here’s what I know. The planet, called Cryxxlyx, is tilted on its axis at 90 degrees relative to its sun. It takes about 400 days for the planet to complete one orbit of its sun. Does it matter when during its orbit I go to that resort? I’ve drawn a little diagram of the planet and its orbit. I’ve also marked the location of the resort. Remember, I want warm temperatures and lots of sunshine.
Answer:
OMG HOW COOL
Explanation:
Which type of electromagnetic radiation is most likely to be non-ionizing
radiation?
A. Radio
B. Ultraviolet
O O O O
C. X-rays
D. Gamma rays
Answer:
A)Radio.
Explanation:
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HNO3 + Mg(OH)2 yield Mg(NO3)2 + H2O
Answer:
yes
Explanation:
because this is a neutralization reaction that yield salt and water
1. The back legs of frog are very strong and it has webbed feet because ……..
Answer:
It helps them to swim
I think this ans may help you
What results when two waves that are completely out of phase meet?
Answer:
Explanation:Destructive interference occurs when the maxima of two waves are 180 degrees out of phase: a positive displacement of one wave is cancelled exactly by a negative displacement of the other wave. The amplitude of the resulting wave is zero.
If two waves that are completely out phase if meet they results in destructive interference. Hence, their intensities decreases for the resultant wave.
What is interference ?A wave of greater, lower, or the same amplitude is created when two waves merge through interference by combining their displacements at all points in space and time.
The interaction of waves that are coherent or correlated with one another, either because they originate from the same source or because their frequencies are similar or almost identical, leads to both constructive and destructive interference.
All sorts of waves, including light, radio, acoustic, surface water waves, gravity waves, and matter waves, can exhibit interference effects. In constructive interference, the waves are in single phase forms a resultant wave with higher amplitude.
When waves from out of phase meets, the resultant wave will have an amplitude less than the individual amplitudes.
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As the amount of charge on two objects increases, the strength of the electrical force between the objects
increases.
decreases.
varies.
remains the same.
Answer:
Increase is the answer
Explanation:
Increase is the answer hopes this helps you
Given that the amount of charge increases, then, the electrical force between the two objects will also increase
Coulomb's law equationF = Kq₁q₂ / r²
Where
F is the force of attraction K is the electrical constant q₁ and q₂ are two point charges r is the distance apartFrom the Coulomb's equation,
F = Kq₁q₂ / r²
We can see that the force (F) is proportional to the charges (q₁ and q₂).
This simply implies that as q₁ and q₂ increase, F will also increase and as q₁ and q₂ decrease, F will also decrease.
With the above information in mind, we can conclude that the force will increase if the amount of charge on the two objects increases.
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Which situation describes a reaction with a percentage yield of 100%?
Select one:
a. none of them
b. No competing reactions occur and the limiting reagent is fully consumed.
c. The amounts of reactants initially present are stoichiometric.
d. The product is more than the limiting reagent has the potential to produce.
Answer:
Explanation:
D
PLEASE HELP ASAP! THANK YOU
Answer:
c
Explanation:
An atom with an atomic number of 33 is ionized and found to have a charge of -3. How many electrons in the atom? What is the isotope symbol of this atom ?*
Explanation:
The element with atomic number of 33 is Arsenic (As)
ionized and found to have a charge of -3.
The negative sign denotes that it gained an electron. So -3 means it gained 3 electrons.
How many electrons in the atom?
Total number of electrons = Number of electrons gained + Electrons in it's neutral state
Total electrons = 3 + 33 = 36
What is the isotope symbol of this atom ?
As³⁻ it has the same number of electrons with Krypton (Kr)
PLZZZ HELP MEEEE!!!!! I WILL GIVE BRAINLIEST!!!!!!!!!
Combine Boyle’s law, Charles’s law, and Gay-Lussac’s law into a single proportional relationship between pressure (P), volume (V), and temperature (T). Use the symbol “∝” to represent “is proportional to.”
Explain your reasoning.
On combing Boyle’s law, Charles’s law, and Gay-Lussac’s law into a single proportional relationship law:
[tex]PV\propto T[/tex]
Explanation:
Boyle's law states that the pressure of the ideal gas is inversely proportional to the volume occupied by the ideal gas at a constant temperature in Kelvins.[tex]P\propto \frac{1}{V}[/tex] ( Constant temperature)
Charle's law states that volume occupied by the ideal gas is directly proportional to the temperature of the ideal gas in Kelvins, under constant pressure.[tex]V\propto T[/tex] (Constant pressure)
Gay-Lussac’s law states that the pressure of the ideal gas is directly proportional to the temperature of the ideal gas in Kelvins, under a constant volume.[tex]P\propto T[/tex] (Constant volume)
On combing Boyle’s law, Charles’s law, and Gay-Lussac’s law into a single proportional relationship law we get:
[tex]PV\propto T[/tex]
In the above relation all the three laws; Boyles law, Charles law, and Gay Lussac's laws are followed.
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How do you balance a chemical equation?
Answer:
When you balance a chemical equation you change coefficients.You never change subscripts. A coefficient is a whole number multiplier. To balance a chemical equation you add the coefficients to make sure there are the same number of atoms on each side of the arrow.
Explanation:
Hope this helps. MARK BRAINLEST!!
b
Lau
C)
Why is sulphuric acid kept in the glass bottle? in fire extinguisher
Answer:
A glass bottle kept inside the container has sulphuric acid in it. When the knob of the extinguisher is pressed, the bottle breaks. The acid comes in contact with sodium carbonate and carbon dioxide is produced. The carbon dioxide comes out through the nozzle which is directed towards the fire.
If 1 g of radium-226 has an activity of 1 curie, what is the activity of 2 g of radium-226? 1 curie 2 curies 4 curies 10 curies
Answer:
2 curies
Explanation:
This is actually pretty easy to explain.
The Radium-226 which is an isotope of the radium, have an activity of curie. This is basically used in radioactivity of certain elements.
As in both cases we have Radium -226 and we are only varying the mass of the Radium, then, we can just do a rule of 3 to calculate this:
1 g Ra-226 --------> 1 Curie
2 g Ra-226 --------> X Curie
Solving for X:
X = 2 g * 1 Curie / 1 g
X = 2 Curies.You can also see this by taking 2 grams of Ra per separate. On one side you have 1 g of Ra-226 and on the other side, you have another 1 g of Ra-226. Both have 1 Cury of activity. If you put both on the same side, you will have 1 Cury of 1 isotope plus 1 cury of the other isotope, final result? 2 curies.
Hope this helps
New rocks are heavier than old rocks.
An object with a mass of 4.0 kg has a force of 12.0 newtons applied to it. What is the resultant acceleration of the object?
Help me?? :(
Answer:
3m/s²
Explanation:
Force applied to an object can be calculated thus;
F = ma
Where;
F = force applied (Newtons)
m = mass of substance (kg)
a = acceleration (m/s²)
According to the information provided in this question, F = 12.0 newtons, m = 4.0 kg, a = ?
Derived from F = m.a
We have; a = F/m
a = 12/4
a = 3
The resultant acceleration of the object is 3m/s².
2.0mol of Iron(s) reacts with 48.0g of Oxygen gas to form iron(III)oxide(s). Complete the problem by choosing the correct pull down quantities in the BCA table below.
Fe and O2 = 0 mol
Fe2O3 = 1 mol
Further explanationGiven
2 mol Fe
48 g O
Required
Fill BCA table
Solution
mol Oxygen :
= mass : MW O2
= 48 g : 32 g/mol
= 1.5 moles
Limiting reactants :
Fe : O2 = 2/4 : 1.5/3 = 0.5 : 0.5
Both reactants have completely reacted
mol Fe2O3 :
= 2/4 x mol Fe
= 2/4 x 2
= 1
BCA table
Reaction
4Fe + 3O2 --> 2Fe2O3
Before 2 1.5 0
Change 2 1.5 1
After 0 0 1
Identify the products in the reaction HCI + NaOH → NaCl + H20.
A. HCI, NaOH, NaCl, and H2O
B. HCl and NaOH
C. NaCl and H20
D. NaOH and H20
The products in the reaction HCI + NaOH → NaCl + H20, are C. NaCl and H20.
How are these the products ?The reaction between hydrochloric acid (HCl) and sodium hydroxide (NaOH) is a neutralization reaction, which means that it produces a salt and water. In this case, the salt is sodium chloride (NaCl) and the water is H2O.
The other options are not correct because they do not include all of the products of the reaction. Option (A) includes HCl and NaOH, but it does not include H2O. Option (B) only includes HCl and NaOH. Option (D) only includes NaOH and H2O.
In conclusion, option C is correct.
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(a)
Name the type of particles that exist in the following objects.
(i) Gold ring:
(ii) Water:
(iii) Balloon:
Answer:
Molecule?
Explanation:
I wanna say molecule, because all of the objects listed have that in common.
what are all the possible chemical formulas for-
1. cadmium and fluorine
2. vanadium and arsenic
3. rhenium and oxygen
4. lead and sulfur
5.titanium and nitrogen
6.palladium and chlorine
7.iridium and carbon
8.chromium and phosphorus
Answer:
number 7 or 3,5
Explanation:
sana po makatulong po sa inyo
The substance(s) to the left of the arrow in a chemical equation are called reactants. A reactant is a substance that is present at the start of a chemical reaction. ... A product is a substance that is present at the end of a chemical reaction.
Answer:
✓ Reactants
✓Reactants
✓ product
Explanation:
The substance(s) to the left of the arrow in a chemical equation are called ..................
A ............... is a substance that is present at the start of a chemical reaction.
A ................. is a substance that is present at the end of a chemical reaction.
Reactants are substances that undergo chemical reaction and are present at the beginning of the reaction and are consumed during the process of the reaction to form a product.
2H2 + O2 ------>2H2O
Here H2 and O2 are Reactants while water H2O is the product ( water)
Products are species that are produced after the chemical reaction have taken place.
Someone help me to these please i dont have much time
Answer:
2
Explanation:
it is #2. the answer is 2
Answer:
Hope this will help you.... Take care
1. Which of the statements is correct?
A. Only asteroids collide with Earth.
B. Cornets are ball of ice, dust, and metal.
C. Meteoroids are streak of light produced when comet enters Earth's
atmosphere.
D. Only asteroids can be found in the solar system.
2. What do you call the fragments or debris that resulted from the collision of
asteroids or comets?
A. meteors
B. meteoroids
C. Oort Cloud
D. Kuiper Belt
3. What is the bright glow around the "head" of a comet?
A. coma
B. crown
C. halo
D. ring
4. What is the name of the famous comet that can be seen from Earth every 75 to
76 years?
A. Hale Boop
B. Comet Halley
C. Comet Tempel 1
D. Shoemaker Levy-9
5. What is the correct term for a “shooting star"?
A. asteroid
B. comet
C. falling star
D, meteor
6. What is an Asteroid Belt?
A. It has rocks crossing the Sun, Mars, and Jupiter.
B. It has rocks crossing the Sun, Jupiter, and Uranus.
C. It is an area between Mars and Jupiter where most asteroids are found.
D. It has rocks between the Earth and Jupiter where most asteroids are found.
Answer:
down
Explanation:
Answer
(a) F
Pole Star is a star in the galaxy and hence not a part of the solar system.
(b) T
Mercury is the smallest planet in the solar system and Jupiter is the largest planet in the solar system.
(c) T
Uranus is the farthest planet to the sun in the solar system and Mercury is the closest planet to the earth in the solar system.
(d) T
INSAT or Indian National Satellite System is a series of artificial Indian satellites used for telecommunications, meteorology and search and rescue operations.
(e) F
There are eight planets in the solar system. They are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. Note the pluto is considered as a dwarf planet.
(f) F
Orion can be seen with naked eyes. It is one of the most magnificent constellations in the sky. It has seven or eight bright stars. Orion is also called the Hunter
In this exercise, we have to use our knowledge of astronomy to identify the correct alternatives, so we find that:
1)C
2)B
3)A
4)B
5)D
6)C
Then, based on astronomy knowledge, we can identify that the true alternatives correspond to:
1)A meteor happen a streak of light above bring into being by a meteor superlative through Earth's general feeling or mood.
2)Meteoroids exist lumps of rock or iron that revolution the brightest star, just as celestial body orbiting a star, asteroids, and comets act.
3)A coma happen the fuzzy-anticipate glow that maybe visualize situated on sides the head of a comet.
4)Halley's Comet, that happen 8 kilometres (5 miles) expansive and 16 km long, travels around the Sun each 75 to 76 age in an lengthened circuit.
5)Shooting stars exist existent what astronomers call meteors. Most meteors upset fashionable the gases around the earth before they reach the ground.
6)The celestial body orbiting a star belt happen a torus-form domain in the Solar System, situated about middle from two points the orbits of the celestial body orbiting a star Jupiter and Mars.
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pls watch episode 17 of Eureka Videos
https://youtu.be/aVIT3R9kx5s and answer the question
What does heat energy do to the molecules in a solid lattice-work pattern?
Answer:
The molecules are held closely together in a regular pattern called a lattice. If the ice is heated, the energy of the molecules increases. ... This is why liquid water is able to flow: the molecules have greater freedom to move than they had in the solid lattice.
Explanation:
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What happens when
an element is
oxidised?
Answer:
The process in which a substance loses an electron in a chemical reaction is called oxidation. The atoms that lost electrons are said to be oxidized. Atoms can be oxidized by nonmetals. Reduction is gain of electrons and thus gaining of negative charge.
Explanation:
:)
H2SO4 + 2NaNO2 → 2HNO2 + Na2SO4
How many grams of NaNO2 do you need in order to make 24.14714 g of Na2SO4?
(use 5 sig figs)
*btw the answer 23.459 is wrong
23.458 g
Further explanationGiven
Reaction
H2SO4 + 2NaNO2 → 2HNO2 + Na2SO4
24.14714 g of Na2SO4
Required
mass of NaNO2
Solution
mol Na2SO4 :
= 24.14714 : 142,04 g/mol
= 0.17
From the equation, mol NaNO2 :
= 2/1 x mol Na2SO4
= 2/1 x 0.17
= 0.34
Mass NaNO2 :
= 0.34 x 68,9953 g/mol
= 23.458 g
This element, in the nitrogen family, has more protons than silver, but less than xenon
Answer:
antimony
Explanation:
it has 51 protons, 4 more than silver and two less than xenon