You have been saving pennies in a jar, and you now have 123 pennies. You want to know the total mass of the pennies before you take them to the bank. If each penny has a mass of 2.50 g, what is the total mass of the pennies?

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Answer 1 · 2016-04-05T22:23:21

307.5 g.

All you have to do is multiply the mass of each penny (2.5) by the amount of pennies in the jar (123). In turn, 123 x 2.5 = 307.5 g/