Question

The density of magnesium is 8960 kg/ m³ . What is the specific gravity of iron related to water with density 4000 kg/ m³?
please I need the answer now help me ​

Answer 1

I think there's some error in the question. Better I find the specific gravity of Mg and Fe w.r.t. to water?

We know,

Specific Gravity = $\boxed{\frac{\rho_{substance}}{\rho_{water}}}$

For Iron (Fe):-

SG = (4000 kg/m³)/(1000 kg/m³)

= 4 : 1 or 4.

For Magnesium (Mg):-

SG = (8960 kg/m³)/(1000 kg/m³)

= 8.96 : 1 or 8.96.

More:-

1. Specific Gravity means Relative Density.
2. It is a dimensionless unit (M⁰L⁰T⁰).
3. It is measured with reference to density of water at 4°C.