Author Question: How much NaCl is needed to make 75 mL of a 12 (w/v) solution? A) 30 g B) 6.0 g C) 7.5 g D) 9.0 ... (Read 45 times)

natalie2426 · **on:** Aug 27, 2018

How much NaCl is needed to make 75 mL of a 12 (w/v) solution?

A) 30 g
B) 6.0 g
C) 7.5 g
D) 9.0 g
E) 12 g

Question 2

What is the total length of two pieces of rubber tubing which are 7.69 cm and 4.028 cm in length? Express this answer to the correct number of significant figures.

A) 11.7 cm
B) 11.69 cm
C) 11.718 cm
D) 11.72 cm
E) 12 cm