I WILL MARK BRAINLIEST!Which of the following statements is true?
2 answers:
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The question is incomplete, here is a complete question.
An arctic weather balloon is filled with 27.8 L of helium gas inside a prep shed. The temperature inside the shed is 13 ⁰C. The balloon is then taken outside, where the temperature is -9 ⁰C. Calculate the new volume of the balloon. You may assume the pressure on the balloon stays constant at exactly 1 atm. Be sure your answer has the correct number of significant digits.
Answer : The new volume of the balloon is 25.7 L
Explanation :
Charles's Law : It is defined as the volume of the gas is directly proportional to the temperature of the gas at constant pressure and number of moles.
or,
where,
= initial volume of gas = 27.8 L
= final volume of gas = ?
= initial temperature of gas =
= final temperature of gas =
Now put all the given values in the above equation, we get:
Therefore, the new volume of the balloon is 25.7 L
Answer:- 2.4 mol .
Solution:- It asks to calculate the moles of formed when 1.2 moles of
are reacted.
There is 2:4 mol ratio between and
. So, the moles of reactant are multiplied by the mol ratio to get the moles of
. The calculations are shown below:
= 2.4 mol
So, 2.4 moles of are formed when 1.2 moles of
were reacted.