Question

Use the problem below to answer the question:

How many grams of H2 would be formed if 34 grams of carbon reacted with an unlimited amount of H2O? The reaction is:

C + H2O → CO + H2

The equation is balanced. The starting substance is carbon, C. The ending substance is hydrogen, H2.

Using the periodic table, find the atomic mass of C.

C = 612.01 g/mole

Answer 1

The atomic mass of C=12.01g/mol
1) Divide the mass (34g C) by the atomic mass of carbon to find the number of moles of C that reacted.
2) Then because the stoichiometry of the reaction is 1 mole C will produce one mole of H2. the moles of carbon reacted (calculated in 1) is going to be equal to the number of moles of H2 formed by the reaction
3) finally multiply the number of moles of H2 by the molecular mass of H2=2g/mol to find the grams of H2

34 g x 2 /12.01= g H2

Answer 2

aaahh I got it now thank you !!!:)