A 1.345 gram sample of a compound containing barium and oxygen was dissolved in hydrochloric acid to give a solution of barium ions (Ba+2), which was then completely precipitated out with excess potassium chromate to give 2.012 grams of barium chromate, BaCrO4. (a) How many moles of barium ions(Ba+2) were in the original sample? (b) How many grams of barium ions (Ba+2) were in the original sample? (c) How many grams of oxygen ions(O-2) were in the original sample? (d) What is the percentage by mass of O ions (O-2) in the original(1.345g) sample?
A 1.345 gram sample of a compound containing barium and oxygen was dissolved in hydrochloric acid to give a solution of barium ions (Ba+2), which was then completely precipitated out with excess potassium chromate to give 2.012 grams of barium chromate, BaCrO4. (a) How many moles of barium ions(Ba+2) were in the original sample? (b) How many grams of barium ions (Ba+2) were in the original sample? (c) How many grams of oxygen ions(O-2) were in the original sample? (d) What is the percentage by mass of O ions (O-2) in the original(1.345g) sample?
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Chapter4: Chemical Reactions
Section: Chapter Questions
Problem 4.88QP: A 1.345-g sample of a compound of barium and oxygen was dissolved in hydrochloric acid to give a...
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A 1.345 gram sample of a compound containing barium and oxygen was dissolved in hydrochloric acid to give a solution of barium ions
(Ba+2), which was then completely precipitated out with excess potassium chromate to give 2.012 grams of barium chromate, BaCrO4.
(a) How many moles of barium ions(Ba+2) were in the original sample?
(b) How many grams of barium ions (Ba+2) were in the original sample?
(c) How many grams of oxygen ions(O-2) were in the original sample?
(d) What is the percentage by mass of O ions (O-2) in the
original(1.345g) sample?
.
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