If three molecules of hydrogen react with one molecule of nitrogen how many molecules of ammonia would be formed?

Answer : The number of molecules of ammonia formed would be, 2.

Explanation :

As per question, when the hydrogen molecule react with nitrogen molecule then it gives ammonia as a product.

The balanced chemical reaction will be :

By the stoichiometry we can say that, 1 mole of nitrogen gas react with 3 mole of hydrogen gas to give 2 mole of ammonia gas as product.

The number of molecules of nitrogen gas = 1

The number of molecules of hydrogen gas = 3

The number of molecules of ammonia gas = 2

Therefore, the number of molecules of ammonia formed would be, 2.

"you start with 15.67 g mgco3-xh2o, when heated and all the water is removed, you are left with 7.58 g mgco3 only.

therefore, you had 15.67 - 7.58 = 8.09g h2o  

moles of each :

7.58g mgco3 = ? moles = 7.58g / 83.4g/mole = 0.09moles  

8 09g h2o = ? moles = 8.09g / 18g/mole = 0.44moles  

molar ratio between the two by dividing both numbers by the smallest number :

0.09 / 0.09 = 1  

0.44 / 0.09 = 4.8  

mgco3-5h2o"