The density of an object is .835 g/cm. if it's volume is 34 cm, what is the mass of the object?

a. 02 g
b. 41 g
c. 28.39 g
d. 40.72 g

We know, density = mass / volume
Here, d = .835 g / cm³
v = 34 cm³

Substitute their values, 
.835 = m / 34
m = 34 * .835
m = 28.39 g

In short, Your Answer would be Option C

Hope this helps!