How many zinc atoms are in 0.081 g of Zn, the mass of zinc in the coating of a typical washer? O 7.46 x 1020 O 4.88 x 1022 1.24 x 10-3 807
How many moles of zinc, Zn , are in 1.37 × 10 24 Zn atoms?
19 How many hydrogen atoms are in a 1.0 g sample of acetic acid, CH3COOH? The molar mass of acetic acid is 60.06 g- mor-1. 4.0 x 1022 atoms H 2.5 x 1021 atoms H 1.0 x 1022 atoms H 3.6 x 1025 atoms H
Zinc reacts with hydrochloric acid according to the reaction equation shown. Zn(s)+2HCl(aq)⟶ZnCl2(aq)+H2(g) How many milliliters of 6.50 M HCl(aq) are required to react with 4.45 g of an ore containing 39.0 % Zn(s) by mass?
Zinc reacts with hydrochloric acid according to the reaction equation shown. Zn(s)+2HCl(aq)⟶ZnCl2(aq)+H2(g) How many milliliters of 4.00 M HCl(aq) are required to react with 7.15 g of an ore containing 43.0 % Zn(s) by mass?
Zinc reacts with hydrochloric acid according to the reaction equation shown. Zn(s)+2HCl(aq)⟶ZnCl2(aq)+H2(g) How many milliliters of 5.50 M HCl(aq) are required to react with 2.95 g of an ore containing 43.0 % Zn(s) by mass?
Zinc reacts with hydrochloric acid according to the reaction equation shown. Zn(s)+2HCl(aq)⟶ZnCl2(aq)+H2(g) How many milliliters of 5.00 M HCl(aq) are required to react with 2.65 g of an ore containing 26.0 % Zn(s) by mass? volume: mL
Nitric acid and zinc react to form zinc nitrate, ammonium nitrate, and water. 4 Zn(s) + 10 HNO3(aq) - 4 Zn(NO3)2(aq) + NH4NO3(aq)+ 3 H20(0) (a) How many atoms of zinc react with 1.05 g HNO3? atoms (b) Calculate the number of grams of zinc that must react with an excess of HNO3 to form 28.3g NH4NO3
41. Suppose you have half a mole of sulfur atoms. How many sulfur atoms do you have? 42. How many micrograms of zinc carbonate are there in 52.0 x 10-5 moles? 43. When 90 grams of water is evaporated, how many atoms of hydrogen was lost? 44. How many picoliters of water are in 3.32 mol of water? 45. How many centiliters of sulfuric acid are in 32.9 x 10-23 molecules of acid? The density of sulfuric acid Page 6...
Question 16 (0.5 points) ✓ Saved How many hydrogen atoms are present in 0.829 g of Mg(H2PO4)2.2H2O? molar mass of Mg(H2PO4)2 .2H2O 20 = 254.32 g/mole OA) 8.00 B) 1.57 x 1022 • C) 7.10 X 1022 D) 1.80 x 1025