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Author Question: A sample of pure calcium fluoride with a mass of 15.0 g contains 7.70 g of calcium. How much calcium ... (Read 169 times)

codyclark

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on: Feb 15, 2020

Question 1

A sample of pure lithium carbonate contains 18.8% lithium by mass. What is the % lithium by mass in a sample of pure lithium carbonate that has twice the mass of the first sample?
◦ 18.8%
◦ 75.2%
◦ 37.6%
◦ 9.40%

Question 2

A sample of pure calcium fluoride with a mass of 15.0 g contains 7.70 g of calcium. How much calcium is contained in 45.0 g of calcium fluoride?
◦ 2.56 g
◦ 7.70 g
◦ 23.1 g
◦ 15.0 g
Chemistry ¦ McMurry, Fay, Robinson ¦ 7th Edition
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Marked as best answer by codyclark on Feb 15, 2020

mbcrismon

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Reply #1 on: Feb 15, 2020
Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.
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codyclark

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Reply 2 on: Feb 15, 2020
Excellent

Perkypinki

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Reply 3 on: Yesterday
Gracias!

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