a piece of copper has a mass 740kg,what is the units in grams

740 kg x (1000 g/kg) = ?

740000

To convert the mass of copper from kilograms to grams, you need to multiply the mass by 1000, since there are 1000 grams in 1 kilogram.

Therefore, you can calculate it as:

Mass in grams = Mass in kilograms x 1000

Given that the mass of the copper is 740 kg, you can substitute this value into the formula:

Mass in grams = 740 kg x 1000

Simplifying the calculation:

Mass in grams = 740,000 grams

So, the mass of the copper is 740,000 grams.