How many grams of water are produced from the reaction of 1.26 mol of oxygen according to this equation?
2h2(g)+o2(g)=2h2o(g)

45.4 g

Explanation:

Data given:

mole of oxygen = 1.26 mol

mass of water = ?

Reaction Given:

     2H₂ (g) + O₂(g) > 2H₂O (g)

Solution:

To solve this problem we look for mole mole ratio oxygen to water we look for the chemical reaction

                    2H₂ (g) + O₂(g)   >  2H₂O (g)

                                    1 mole                  2 mol

So,

It is clear from the reaction that 1 mole oxygen gives 2 mole water then how many mole of water will produce by 1.26 moles of oxygen.

So apply unity formula

               2 moles H₂O ≅ 1 mole O₂

               X moles H₂O ≅ 1.26 mole O₂

Do cross multiplication

              X moles H₂O = 2 mol x 1.26 mole / 1 mole

              X moles H₂O ≅ 2.52 mol

So,

1.26 mole of oxygen produce 2.52 mole of water.

Now convert moles of water to mass

Formula will be used

      mass in grams = no. of moles x molar mass

molar mass of water (H₂O)

molar mass of H₂O = 2(1) + 16

molar mass of H₂O = 2 + 16 = 18 g/mol

put value in above equation:

           mass in grams = 2.52 mole x 18 g/mol

           mass in grams = 45.4 g

So,

1.26 moles oxygen produce 45.4 g water

it's filtration, but this is an assumption so my apologies if i got this

they all get energy from eating other animals, dead animals to be more precise.

hienas tends to steal pray from other animals. crows and vultures tend to eat dead animals and leftovers.

hope it ,

bioteacher101