Posted by Kaelan on .
Hey guys I need help understanding this problem. If you can list why/reasoning for each step of the answer I would appreciate it greatly!
Interpret the given equation in terms of relatinve numbers of representative particles, number of moles, and masses of reactants and products.
It look straight forward to me. I'll do one of them.
2 mols K + 2 mols H2O yield 2 mols KOH and 1 mol H2.
Now you can do the masses.
2*atomic mass K = 78 g K combine with 2*18 or 36 g H2O etc.
how many grams of solute is in 64.3 mL of 0.0238 molarity KOH?
mols = M x L. You know M and L, solve for mols.
Then mol = grams/molar mass.
You know mols and molar mass, solve for grams.