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Author Question: Which of the following is the hardest mineral? a. Quartz b. Diamond c. Talc d. ... (Read 98 times)

cookcarl

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on: Jul 28, 2018
Which of the following is the hardest mineral?
 a. Quartz
  b. Diamond
  c. Talc
  d. Gypsum

Question 2

The ionic charge of the nitrite ion in Al(NO2)3, aluminum nitrite, must be
 a. 3+.
  b. 1.
  c. 3.
  d. 1+.


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juicepod

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Reply #1 on: Jul 28, 2018
Answer to Question 1

b

Answer to Question 2

b


cookcarl

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Reply 2 on: Jul 28, 2018
Excellent

xiaomengxian

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  • Posts: 311
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

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