Chapter 3: Q 44E (page 170)
44. Explain what changes and what stays the same when 1.00 L of a solution of NaCl is diluted to 1.80 L.
Molarity and volume of solution changes,
Moles of solute remains same.
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Determine the mass in grams of each of the following:
(a) 0.600 mol of oxygen atoms
(b) 0.600 mol of oxygen molecules, O2
(c) 0.600 mol of ozone molecules, O3
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 \({\rm{C}}{{\rm{a}}_3}{{\rm{(P}}{{\rm{O}}_4}{\rm{)}}_2}\)
Question: Consider this question: What is the molarity of HCl if 35.23ml of a solution of HCl contain 0.3366g of HCl?
(a) Outline the steps necessary to answer the question.
(b) Answer the question.
Calculate the molecular or formula mass of each of the following:
(a)P4
(b)H2O
(c) Ca(NO3)2
(d) CH3CO2H (Acetic acid)
(e) C12H22O11(Sucrose, cane sugar)
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