Answer:
79 g
Explanation:
Density (d) of iron = 7.9 g/cm³
Volume of the iron (V) = 10 cm³
Mass of the iron (m) = ?
Solution:
Formula will be used
d = m/V
As we have to find mass so rearrange the above equation
m = dV . . . . . . . . . . . (1)
Put values in above equation 1
m = 7.9 g/cm³ x 10cm³
m = 79 g
So,
mass of iron = 79 g
Answer:
I think it's B
Explanation:
I think it is b because if the number is positive the zeroes will be on the left so you move the decimal to the right to get rid of the zeroes.
There should be 2 since there’s 2 D atoms in the reaction.
