chemistry finding the mass?

P

Peter D

New member
A rectangular sheet of lead shielding is placed over the chest of a patient in a dental office while X-rays are taken. the sheet measures 95.0 cm by 45.0 cm by 0.15 cm. If the density of lead is 11.3 g/cm^3, What is the MASS of the lead apron??
 
This is really easy. You find the volume of the lead sheet by multiplying 95 cm x 45 cm x .15 cm, and then you divide it by 11.3 to get your answer in grams.
 
95.0cm x 45.0 cm x 0.15cm =641.25cm3

641.25cm3/11.3 g/cm3 the dementional Quanititys will cancel leaving grams. 56.74 grams.
 
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