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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 63 times)

s.tung

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on: Aug 27, 2018
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 40.0 g of calcium fluoride?
 
  A) 2.27 g
  B) 7.70 g
  C) 15.0 g
  D) 20.5 g

Question 2

Of the following, which atom has the smallest atomic radius?
 
  A) K
  B) As
  C) Rb
  D) Sb


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pratush dev

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Reply #1 on: Aug 27, 2018
Answer to Question 1

D

Answer to Question 2

B


s.tung

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Reply 2 on: Aug 27, 2018
Excellent

softEldritch

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Reply 3 on: Yesterday
Wow, this really help

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