Author Question: Modern electroplaters can cover a surface area of 55.0 m2 with one troy ounce of gold (volume = ... (Read 118 times)

torybrooks · **on:** Jul 28, 2018

Modern electroplaters can cover a surface area of 55.0 m2 with one troy ounce of gold (volume = 1.611 cm3). What is the thickness of the electroplated gold?
a. 3.64 10-7 m
c. 1.83 10-6 m
b. 1.46 10-9 m
d. 2.93 10-8 m

Question 2

Multiplying a 4 significant figure number by a 3 significant figure number and then dividing the product by a six significant figure number yields a number with how many significant figures?
a. 7/6
c. 2
b. 3
d. 13