An unknown substance has a volume of 15. 8 cm 3 and a mass of 2 grams. Use the chart above to identify the unknown substance. What is the substance?
a.
iron
b.
silver
c.
water
d.
gold

One way that radioactive waste is treated is by burying it in repositories. the repositories are found only in states with very low populations. true or false? a. trueb. false(also i meant to put high school but it put down middle school instead)

How many moles is 14.5 cm^3 of platinum? the density of platinum is 21.45 g/cm^3.

All forces cause motion? true or false