Question

PLEASE HELP FAST!!! :)

Answer 1

The answer is 43.72 × 10¹² kg.

It is given:
the mass of the Rock of Gibraltar:
m₁ = 1.78 × 10¹² kg

the mass of the Antarctic iceberg:
m₂ = 4.55 × 10¹³ kg = 4.55 × 10 × 10¹² kg = 45.5 × 10¹² kg

To calculate how many more kilograms is the mass of the Antarctic iceberg than the mass of the Rock of Gibraltar we need to subtract them:
m₂ - m₁ = 45.5 × 10¹² kg - 1.78 × 10¹² kg
m₂ - m₁ = (45.5 - 1.78) × 10¹² kg
m₂ - m₁ = 43.72 × 10¹² kg