Explanation:
First Question:
The equation is given as;
2KClO3 --> 2KCl + 3O2
2 mol of KClO3 produces 2 mol of KCl
Converting 7.6 g of KCl to mol;
Number of moles = Mass / Molar mass = 7.6 / 74.5513 = 0.1019
2 mol = 2 mol
x mol = 0.1019
solving for x;
x = 0.1019 mol of KClO3
converting to mass;
Mass = Number of mol * Molar mass = 0.1019 * 122.55 = 12.48
Correct option = B. 12.5 g
Second Question
The equation is given as;
1N2 + 3H2 --> 2NH3
3 mol of H2 produces 2 mol of NH3
Converting 34.06g of NH3 to mol;
Number of moles = Mass / Molar mass = 34.06 / 17.031 = 2 mol
3 mol = 2 mol
x mol = 2 mol
Solving for x;
x = 6 / 2 = 3 mol of H2
Converting 3 mol H2 to g;
Mass = Number of moles * Molar mass = 3 * 2.016 = 6.048g
Correct option: B. 6.05g
Boyles law is P1V1=P2V2 where P is pressure and V is volume so the answer is pressure and volume
Answer:
125 divided by 2 = about 62.5
62.5 mph
Explanation:
Answer: 2369.84c
Explanation:
The length of the wire is 2369.84cmData Given;density = 8.94 g/cm^3diameter = 9.50mm = 0.95cm radius = d / 2 = 0.95/2 = 0.475cmmass (not given, but assuming m = 15kg = 15000kgDensity of the WireLet's calculate the volume of the wire using formula of density.substitute the values and solve for volumeLength of the WireTo calculate the length of the wire, we would use the volume of a cylinder on this.From the calculation above, the length of the copper is 2369.84c
Because there like stuck together do the expand more
