What is the mass of carbon in dimethylsulfoxide (C2H6SO) rounded to three significant figures?
A) 25.4
B) 28.6
C) 30.7
D) 7.74
E) 78.1
Question 2
The general name for the male sex hormones is
A) androgens.
B) estrogens.
C) progesterones.
D) testosterones.