Only 1 molecule of NH3 will be produced in the following reaction since it requires 2 moles of nitrogen and excess hydrogen to create one molecule. We can't create more than one since we only have 1 of the nitrogen molecule remaining.
Answer:
The molar mas of the X is 203.06 g/mol.
Explanation:
The pressure of the pure solvent = p = 23.8 Torr
Vapor pressure of the solution =
Mass of solute =14.4 g
Molar mass of solute = M
Moles of solute =
Mass of solvent or water = 100.0 g
Moles of water =
Mole fraction of solute =
The relative lowering in vapor pressure of the solution with non volatile solute is equal mole fraction of solute in solution.
Solving for
The molar mas of the X is 203.06 g/mol.
Combustion usually occurs when a hydrocarbon reacts with oxygen to produce carbon dioxide and water. Combustion reactions are almost always exothermic CO(g) + ½O2(g) → CO2(g) + 67.6 kcal
base from the reaction, the stoichiometric ratio is 1 mole CO produce 67.6 kcal so the anwer is - 67.6 kcal because is it exothermic
Energy, I think, haven't done that since 8th grade
Answer: 173 g ( 0.17 kg in right accuracy)
Explanation: Amount in moles is n = N/Na = 2.0·10^24 / 6.022·10^23 (1/mol).
n = 3.32116 mol. M(Cr) = 52.00 g/mol and mass m = nM = 172.7 g