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Agraduated cylinder weighs 100.0 g. If you add 20.0 g of water and 10 pennies, the mass is now 149.5 g. What is
the average mass of the added pennies?

Respuesta :

linahamdan1980

Answer:

Explanation:

the mass of water + mass  of cylinder + mass of pennies= 149.5 g

  20 + 100+10 X   = 149.5

10  X = The mass of the pennies = 29.5 g

 mass of one penny = 29.5 / 10

                                  = 2.95 g

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