Mole & Mass Practice Questions PDF
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This PDF document contains a set of practice questions focusing on moles, mass, and related chemical calculations. The questions cover concepts like molar mass, density, formulas with multiple choice questions. The document is suitable as a revision aid for students, focusing on calculations.
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1. What is the symbol for the number of moles? * (A) M * (B) W * (C) n * (D) m 2. What is the unit for "Molar Mass"? * (A) g * (B) mol * (C) g.mol-1 * (D) mol.g-1 3. What is the equation that links moles (n), mass (W), and molar mass (M)? * (A) n = WM * (B) W = nM * (C) M = nW * (D) n = M/W 4. Wh...
1. What is the symbol for the number of moles? * (A) M * (B) W * (C) n * (D) m 2. What is the unit for "Molar Mass"? * (A) g * (B) mol * (C) g.mol-1 * (D) mol.g-1 3. What is the equation that links moles (n), mass (W), and molar mass (M)? * (A) n = WM * (B) W = nM * (C) M = nW * (D) n = M/W 4. What is the mass of 2 moles of carbon (Ar = 12)? * (A) 6 g * (B) 12 g * (C) 24 g * (D) 48 g 5. How many moles are there in 10 g of calcium (Ar = 40)? * (A) 0.25 mol * (B) 0.4 mol * (C) 4 mol * (D) 400 mol 6. What is the molar mass (Mr) of water (H2O)? (Ar: H = 1, O = 16) * (A) 17 g.mol-1 * (B) 18 g.mol-1 * (C) 19 g.mol-1 * (D) 34 g.mol-1 7. What mass of sodium hydroxide (NaOH) is needed to make 1 mole? (Ar: Na = 23, O = 16, H = 1) * (A) 23 g * (B) 40 g * (C) 80 g * (D) 16 g 8. How many moles are in 4.4g of CO2? (Ar: C=12, O=16) * (A) 1.00 mol * (B) 0.10 mol * (C) 10.0 mol * (D) 0.44 mol 9. What is the equation that links density (d), mass (W), and volume (V)? * (A) d = WV * (B) W = d/V * (C) V = dW * (D) W = dV 10. What are the typical units for density used in these calculations? * (A) g.cm-3 * (B) kg.m-3 * (C) mol.dm-3 * (D) cm3.g-1 11. A liquid has a density of 0.8 g.cm-3. What is the mass of 10 cm3 of this liquid? * (A) 0.08 g * (B) 8 g * (C) 12.5 g * (D) 80 g 12. 5g of a substance has a volume of 2.5cm^3. Find the density. * (A) 0.5 g.cm-3 * (B) 2.0 g.cm-3 * (C) 1.25 g.cm-3 * (D) 12.5 g.cm-3 13. Rearrange W = dV to nd d. * (A) d = WV * (B) d = V/W * (C) d= W/V * (D) V= W/d fi 14. Rearrange W = dV to nd V. * (A) d = WV * (B) d = V/W * (C) d= W/V * (D) V= W/d 15. 2.00 moles of titanium has a mass of... * (A) 24 g * (B) 47.9 g * (C) 95.8 g * (D) 143.7 g 16. 1 tonne is how many grams? * (A) 100 g * (B) 1000 g * (C) 1,000,000 g * (D) 10,000 g 17. 95.8g of Ti is how many moles? * (A) 0.5 mol * (B) 1.0 mol * (C) 2.0 mol * (D) 4.0 mol 18. The Ar/Mr of a substance is the mass of how many moles? * (A) 0.5 * (B) 1.0 * (C) 2.0 *(D) It depends on the substance 19. Convert 2000g into tonnes. * (A) 0.2 tonnes * (B) 2.0 tonnes * (C) 20 tonnes * (D) 200 tonnes 20. Convert 4.0 x10^-6 tonnes into grams. * (A) 400 g * (B) 40.0 g fi *(C) 4.00 g *(D) 0.40 g
