[Answered] Coal can be cleaned before it is burned. The flotation method separates coal from its major ...

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cdr_15

Hero Member
Posts: 546

on: Aug 27, 2018

Coal can be cleaned before it is burned. The flotation method separates coal from its major impurities by taking advantage of the difference in ________ of these materials.

A) acidity
B) combustion
C) density
D) volatility

Question 2

Atoms that have the same atomic number but different numbers of neutrons are

A) radioactive.
B) isotopes.
C) impossible.
D) ions.

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essyface1

Sr. Member
Posts: 347

Reply #1 on: Aug 27, 2018

Answer to Question 1

C

Answer to Question 2

B

cdr_15

Hero Member
Posts: 546

Reply #2 on: Aug 27, 2018

Thanks

essyface1

Sr. Member
Posts: 347

Reply #3 on: Aug 27, 2018

Welcome

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