How many liters of hydrogen gas are needed to produce 100.0 grams ...

[michelleunicorn]

How many liters of hydrogen gas are needed to produce 100.0 grams of water at 25.0C and 1.00 atm pressure according to the chemical equation shown below?
 
  2 H2(g) + O2(g)  2 H2O(l)
 
  A) 67.9 L
  B) 136 L
  C) 203 L
  D) 407 L

Question 2

How many moles of oxygen are formed when 58.6 g of KNO3 decomposes according to the following reaction? The molar mass of KNO3 is 101.11 g/mol. 4 KNO3(s)  2 K2O(s) + 2 N2(g) + 5 O2(g)
 
  A) 23.2 mol O2
  B) 0.580 mol O2
  C) 18.5 mol O2
  D) 0.724 mol O2
  E) 1.73 mol O2

Question 3

All of the following statements describing solutions are true except
 
  A) making a solution involves a physical change.
  B) solutions are homogeneous.
  C) the particles in a solution are atomic or molecular in size.
  D) solutions are colorless.
  E) solutions are transparent.

[dawsa925]

Answer to Question 1

B

Answer to Question 2

D

Answer to Question 3

D

[michelleunicorn]

TY

[dawsa925]

You're welcome