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Chapter 3: Q3.17 CYL (page 153)
How many grams of CaCl2 (110.98 g/mol) are contained in 250.0 mL of a 0.200-Msolution of calcium chloride?
5.55 g CaCl2 are contained in 250.0 mL of a 0.200-Msolution of calcium chloride
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47. Determine the molarity for each of the following solutions:
(a) 0.444 mol of CoCl2 in 0.654 L of solution
(b) 98.0 g of phosphoric acid, H3PO4, in 1.00 L of solution
(c) 0.2074 g of calcium hydroxide, Ca(OH)2, in 40.00 mL of solution
(d) 10.5 kg of Na2SO4∙10H2O in 18.60 L of solution
(e) 7.0×10-3 mol of I2 in 100.0 mL of solution
(f) 1.8 × 104 mg of HCl in 0.075 L of solution
What is the mass of 0.443 mol of hydrazine, N2H4?
What is the molecular formula of a compound with a percent composition of 49.47% C, 5.201% H, 28.84% N, 16.48% O, and a molecular mass of 194.2 amu?
Compare 1 mole of H2, 1 mole of O2, and 1 mole of F2.
(a) Which has the largest number of molecules? Explain why.
(b) Which has the greatest mass? Explain why.
The approximate minimum daily dietary requirement of the amino acid leucine, C6H13NO2, is 1.1 g. What is this requirement in moles?
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