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the mass of the rock of gibraltar is 1.78 ⋅ 10^12 kilograms. the mass of the antarctic iceberg is 4.55 ⋅ 10^13 kilograms. approximately how many more
kilograms is the mass of the antarctic iceberg than the mass of the rock of gibraltar? show your work and write your answer in scientific notation.
make sure to explain all the steps it took you to get the answer! : )

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