Question

help me find the mass?

Answer 1

(a) V = (4/3)pir^3 = (4/3)(pi)(10.5)^3
That will give you the volume in cm^3
Then multiply the volume by the density to get the mass in grams.
Then write it in scientific notation.

Answer 2

(b) V = s^3 where s = length of side of cube
V = (0.049 mm)^3
That will give you the volume in mm^3
Then convert from mm^3 to cm^3
Then multiply by the density to get the mass in grams.
Then write it in scientific notation.

Answer 3

(c) You have the volume in mL and the density in g/mL, so just multiply them together. The number there is wrong.

Answer 4

what do you mean the number there is wrong?

Answer 5

The number in the answer box is incorrect.

Answer 6

i already got that last one correct

Answer 7

is the answer for b. 2.518 x10^-3?

Answer 8

The number part is correct, but the exponent is not. Did you convert from mm^3 to cm^3?

Answer 9

yeah idk how to do it then

Answer 10

what would the exponent be