Chapter 3: Q3.23 CYL (page 159)
What volume of concentrated HCl solution contains 125 g of HCl?
282 mL of concentrated HCl solution contains 125 g of HCl
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What is the mass of 0.443 mol of hydrazine, N2H4?
To three significant digits, what is the mass percentage of iron in the compound Fe2O3?
Calculate the following to four significant figures:
(a) the percent composition of ammonia, \({\rm{N}}{{\rm{H}}_3}\)
(b) the percent composition of photographic fixer solution (“hypo”), \({\rm{N}}{{\rm{a}}_2}{{\rm{S}}_2}{{\rm{O}}_3}\)
(c) the percent of calcium ion in \({\rm{C}}{{\rm{a}}_3}{{\rm{(P}}{{\rm{O}}_4}{\rm{)}}_2}\)
How many grams of CaCl2 (110.98 g/mol) are contained in 250.0 mL of a 0.200-Msolution of calcium chloride?
What is the empirical formula of a compound containing 40.0% C, 6.71% H, and 53.28% O?
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