Why isn’t a state change from liquid to solid a chemical reaction?

Chemistry

2 answers:

kipiarov [429]2 years ago

4 0

Answer:

because the change can be undone with a chemical change the change cant be undone, and it just passes through another phase of matter. Changes of matter can consider physical

Explanation:

DanielleElmas [232]2 years ago

3 0

Answer:

nosé ehhhye eee p nosé inglés

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How many moles of water are produced when 5 moles of hydrogen gas react with 2 moles of oxygen gas?

Marysya12 [62]

4 moles of water are produced

Explanation:

4 moles of water are produced when 5 moles of hydrogen is reacted with 2 moles of oxygen gas
The balanced equation given is when 2 moles of hydrogen reacts with 1 mole of oxygen and it forms 2 moles of water.
The equation we have to solve is the 5 moles of hydrogen is reacting with 2 moles of oxygen gas, we can write the equation as $5H_{2} +2O_{2} --> 4H_{2} O + H_{2}$
This is the balanced equation when 5 moles of hydrogen reacts with 2 moles of oxygen. The balanced equation means the number of hydrogen atoms and oxygen atoms on both sides would be equal in number.