2) Using the lab equipment and a calculator, compute the density and identify the mineral in question.
Mineral Densities
Mineral Density (gm/ml)
Potash alum 1.75
Hornblende 3.0
Zircon 4.7
Phosgenite 6.0
Galena 7.2
Platinum 21.45

A) galena
B) platinum
C) phosgenite
D) potash alum

PLEASE HELP ME PLEASSEE

Consider a system to be two train cars traveling toward each other. what is the total momentum of the system before the train cars collide?   kg • what must the total momentum of the system be after the train cars collide?   kg •  

The california mussel (mytilus californianus) attaches itself to a rock or other solid surface with a bundle of filaments known as the byssus. imagine that 15.0 j of work is done to stretch the distal end of the byssus. it releases 10.8 j of thermal energy as it relaxes. what is the resilience of the distal end of the byssus?

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