Author Question: Calculate the number of moles of sodium chloride needed to make 4.0 L of a 3.0 M solution. A) 12 ... (Read 112 times)

theo · **on:** Aug 27, 2018

Calculate the number of moles of sodium chloride needed to make 4.0 L of a 3.0 M solution.

A) 12 moles of sodium chloride
B) 3.0 moles of sodium chloride
C) 4.0 moles of sodium chloride
D) 7.0 moles of sodium chloride

Question 2

Substance A contains 80 carbon and 20 hydrogen. Substance B contains 83 carbon and 17 hydrogen. A and B are the same substance.

Indicate whether the statement is true or false