Answer:
54 g is the theoretical yield
Explanation:
This is the reaction:
2H₂ + O₂ → 2H₂O
So 2 moles of hydrogen react with 1 mol of oxygen, to produce 2 mol of water.
If I have 3 moles of H₂ and 2 moles of O₂, the my limiting reactant is the hydrogen.
1 mol of O₂ react with 2 moles of H₂
S 2 mol of O₂ would react with 4 moles (I only have 3 moles)
Then, ratio is 2:2 the same as 1:1
As 2 mol of H₂ produce 2 moles of water, 3 moles of H₂ will produce 3 moles of H₂O.
This is the theoretical yield in moles. Let's convert them to mass (mol . molar mass)
3 mol . 18g/m = 54 g
0.250 mol H2 or 0.5 grams H2. Convert your grams to moles (Na 11.2g = 0.5mol | 9g H2O = .5mol) then use your mole ratio (Na / H2 = 2/1 | H2O 2/1) as a proportion to calculate the # of moles produced from each reactant ( 2/1 = .5/x [solve for x]) and then convert your moles (0.25mol H2) to grams using the molar mass of H2 (H[1]x2 = 2) using multiplication. (moles x molar mass) (.250 x 2) to get your answer of 0.5 grams H2
The acceleration is -8.89 m/s
I think the particle starts to move slowly around because no heat or pressure is applied to it