I need so much help with my chemistry homework very soon please por favor

Question

1.) For the reaction C + 2H₂ → CH₄, how many grams of hydrogen are required to produce 1.6 moles of methane, CH₄?

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:

Element	Molar Mass
Hydrogen	1
Carbon	12

2.) S   + 6 HNO3 → H2SO4 + 6 NO2 + 2 H2O

In the above equation, how many grams of water can be made when 11.9 moles of HNO3 are consumed?

Round your answer to the nearest tenth. If you answer is a whole number like 4, report the answer as 4.0

Use the following molar masses. If you do not use these masses, the computer will mark your answer incorrect.:

Element	Molar Mass
Hydrogen	1
Nitrogen	14
Sulfur	32
Oxygen	16

Please help me with my chemistry by explaining and solve please

Answer 1

1.) Since the ratio of H₂ to CH₄ is 2 to 1, we know that for every one mole of methane(CH₄), two moles of Hydrogen gas(H₂) will be produced. Knowing that 1.6 moles of CH₄ has been produced, we can find the moles of H₂ by multiplying 1.6 by 2, which yields 3.2 mol H₂. To find the molar mass, we calculate 1g/mol * 3.2mol * 2(since there are 2 hydrogen atoms in H₂) = 6.4 grams of hydrogen.

2.) Like the last problem, we have to find the ratio of Nitric Acid to Water, which is 6:2 or 3:1.

With this ratio, 11.9 moles of HNO3 yields (11.9/3 =) 3.9667 moles of H₂O. Then to convert moles to grams, do 3.9667mol * 18 (1+1+16, which is water's molar mass according to the table) = 71.4 grams of H₂O