Problem 3.1: Silver has a density of 10.5 g/mL at 25 C. What is the mass of 16 mL of silver? [Solution]

Problem 3.2: How many significant figures are there in the following numbers:

a. 209.4
b. 1.74x10^-23
c. 0.00220
d. 0.087686
[Solution]

Problem 3.3: Please perform the necessary math and give the number with the correct number of significant figures. Use scientific notation where appropriate. A. 4.632 x 2.5
B. 12.443 +1.94672
C. 0.0000042 x 24365
D. 5.4 x 104 x 2.3 x 102
E. (41 x 3890)/36
[Solution]