1. How many moles will be in exactly 3.5 ml of 0.4M sodium chloride? A) 1.4 B) 0.14 C) 0.0014 D)?

Question

...  0.00014

2. Using sodium chloride as a reference what is the mole ratio of silver chloride produced in the test tubes of sodium chloride, magnesium chloride, and aluminum chloride?
A) 1:1:1
B) 3:2:1
C) 1:2:2
D) 1:2:3
E) 1:3:2

3. if the reaction in 0.000050 moles of precipitate in there are 6.022x10^23 molecules in each mole how many molecules of AgCl would the test tube contain?

A) 0.00030 molecules
B) 3.011 x10^23
C) 3.0 x10^19 molecules

Answer

This is all simple arithmetic. "Mole" means one mole per liter.

3.5 x 10^-3 x 0.4 = 0.0014 mole

#2 has insufficient information. #3 has lousy grammar.

You don't seem to have adequate preparation to study chemistry. You have to be pretty sharp to do this subject at all.

1. How many moles will be in exactly 3.5 ml of 0.4M sodium chloride? A) 1.4 B) 0.14 C) 0.0014 D)?

Answers (1)