CHEMISTRY HIGH SCHOOL

Can you answer nine and ten
can you answer nine and ten - 1

Answers

Answer 1
Answer:

Answer: 50 G.

Explanation: i known.

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Answer:

hi

Explanation:

A weather balloon of known initial volume is released. The air pressures ar its initial and final altitudes are known. Why can't you find its new volume by using these known values and Boyle's law?

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Answer: you cannot find its new volume by using these known values and Boyle's law because the temperature does not remain constant.


Explanation:


Boyle's law states that the volume of a fixed amount of gas, at a constant temperature, varies inversely with the pressure.


So, it is a condition that the temperature does not change.


For the wheater ballon case, as it travels through the atmosphere, the temperature at different altitudes will be different.


So, you might use other equation of states, such as the combined law, which does deal with changes in the three variables: volume, pressure, and temperature.


The mathematical formulation of Boyle's law is:


pV = constanjt ⇒ p₁ V₁ = p₂ V₂, at constant T.


The mathematical formulation of the combined law of gases is:


pV/T = constant ⇒ p₁ V₁ / T₁ = p₂ V₂ / T₂, for a fixed amount of gas, then it might work for the weather ballon (if you know the initial and end temperatures).

You cannot find the new volume by using initial volume of the weather balloon and air pressure ai its initial and final altitudes and Boyle’s law because the given values are not the same. Boyle’s law holds for the pressure and volume of the GAS at constant temperature. Here you are given the air pressure outside the weather balloon not the inside of the balloon. They have different gases and so it would not apply.

A solution is considered basic or alkaline if its pH is _________ 7.A. equal to
B. less than
C. greater than

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C greater than because anthing basic is 8 or up

Which molecule contains the smallest number of hydrogen atoms?

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The Molecule that contain the smallest number of Hydrogen atoms is Al(OH)3. It has three hydrogen atoms -


I hopes this helps
 The molecule with a small amount of hydrogen atoms is a Al(OH)3.

The reactants in a chemical reaction contain 900 J of chemical energy. The products of the reaction contain 9000 J of chemical energy. Which statement best describes this chemical reaction? The reaction absorbs 9000 J of energy from the surroundings as it proceeds. The reaction releases 9000 J of energy to the surroundings as it proceeds. The reaction absorbs 8100 J of energy from the surroundings as it proceeds. The reaction releases 8100 J of energy to the surroundings as it proceeds. The answer is C

Answers

For the reaction to take place the energy of the reactants must reach to the energy level of the products:
we have 900 J in the reactants and 9000 J for the products so the reactants need 8100 J to reach to the value of energy of products (900 + 8100 = 9000)
So the correct answer is C. The reaction absorbs 8100 J of energy from the surroundings as it proceeds. 
The reaction absorbs 8100 J of energy from the surroundings as it proceeds.

Write balanced complete ionic equation for AgNO3(aq)+NaCl(aq)→AgCl(s)+NaNO3(aq)

Answers

AgNO3(aq)+NaCl(aq)→AgCl(s)+NaNO3(aq)
the coefficients are 1 because the equation is balanced already
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