one more math question

[Gary007]

A copper penny has a mass of 3.2 grams and a volume of 0.35 CM3. What is it's density in units of kilograms/liter?

Our main problem is how to go about converting centimeters into liters (which can't be done) So how do you go about solving the problem.

 

[MikeH]

1 cc (cubic centimeter) = 1 mL

 

[Cougar Allen]

1 liter = 1,000 cubic centimeters

 

[Esav Benyamin]

Sneaky! (They snuck you the answer.)

Since a kilogram is a thousand grams and a liter is a thousand cm cubed, grams per cm cubed is the same as kilograms per liter.

So just divide the 3.2 grams by the 0.35 cm cubed.

 

[Gary007]

she whipped out her calculator and said, "huh, it works". Well now she understands. Thanks again! :thumbup:

Sneaky! (They snuck you the answer.)

Since a kilogram is a thousand grams and a liter is a thousand cm cubed, grams per cm cubed is the same as kilograms per liter.

So just divide the 3.2 grams by the 0.35 cm cubed.

 

[mete]

Copper pennies are now just copper coated zinc so that changes the mass and density !