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Chapter 3: Q3.22 CYL (page 158)
A bottle of a tile cleanser contains 135 g of HCl and 775 g of water. What is the percent by mass of HCl in this cleanser?
14.83 % of HCl is in the cleanser
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Question-Determine the percent ammonia (NH3) in Co (NH3)6Cl3 to three significant figures.
Question- Dichloroethane, a compound that is often used for dry cleaning, contains carbon, hydrogen, and chlorine. It has a molar mass of 99g/mol. Analysis of a sample shows that it contains 24.3% carbon and 4.1% hydrogen. What is its molecular formula?
What is the concentration of the NaCl solution that results when 0.150 L of a 0.556-M solution is allowed to evaporate until the volume is reduced to 0.105 L?
Calculate the molar mass of each of the following:
(a) S8
(b) C5H12
(c) Sc2(SO4)3
(d) CH3COCH3 (acetone)
(e) C6H12O6(glucose)
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
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