What is the mass (in grams) of copper in 9kg one?

1 Answer
Meave60
Mar 24, 2018

The mass of #"9 kg Cu"# in grams is #"9000 g"#.

Explanation:

Use dimensional analysis.

#"1 kg"##=##"1000 g"#

Multiply the given kg by the conversion factor that cancels kg and leaves grams.

#9color(red)cancel(color(black)("kg Cu"))xx("1000 g Cu")/(1color(red)cancel(color(black)("kg Cu")))="9000 g Cu"#

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