Ask your own question, for FREE!
Chemistry 14 Online
OpenStudy (anonymous):

You are given a sample of limestone, which is mostly CaCO3 to determine the mass percentage of Ca in the rock. You dissolve the limestone in hydrochloric acid, which gives a solution of calcium chloride. Then you precipitate the calcium ion in solution by adding sodium oxalate Na2C2O4. The precipitate is calcium oxalate, CaC2O4. You find that a sample of limestone weighing 128.3 mg gives 140.2 mg of CaC2O4. What is the mass % of calcium in the limestone?

Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!
Latest Questions
heartlessprophet: How do i get paid from work when im in job court ?
4 hours ago 0 Replies 0 Medals
Aubree: Guys, what does love feel like? I've been getting a tight chest and when I talk to him my heart rate hangs out around 100-120 beats per min, and when he doe
6 hours ago 8 Replies 1 Medal
KBaby: Any1 down to call
1 day ago 0 Replies 0 Medals
KBaby: Bored af lwk need sum1 to talk to
1 day ago 2 Replies 0 Medals
thereneelg: ok... anyone have advice?? ...I did Choir all throughout Middle school and have ALWAYS been put in Soprano those three years.
1 day ago 6 Replies 1 Medal
kamariana: The Byzantine Procopius is known for (5 points) reconquering much of the old Roma
2 days ago 0 Replies 0 Medals
chuckD: hellp!!! what does it mean to describe a scientist as skeptical Why is sceptical
2 days ago 2 Replies 1 Medal
DoltonCarlee: So like do y'all know anything about the first world war?
1 day ago 2 Replies 0 Medals
thehearken: anyone know how to explain this so its easier for me to understand? b(1)=2, b(n)=
1 day ago 5 Replies 2 Medals
Twaylor: test post
4 days ago 9 Replies 0 Medals
Can't find your answer? Make a FREE account and ask your own questions, OR help others and earn volunteer hours!

Join our real-time social learning platform and learn together with your friends!