What do comets and asteroids have in common? Choices:
They are made of ice
They orbit the sun
They are made of metal debris
They are the center of the solar system

Urea, co(nh2)2, is manufactured on a large scale for use in producing urea-formaldehyde plastics and as a fertilizer. what is the maximum mass of urea that can be manufactured from the co2 produced by combustion of 1.00 x 104 grams of co2?

Geothermal energy for industrial use is available almost anywhere. a.true b.false

The number of moles of a given mass of a substance can be found without knowing its molecular formula or molar mass. true false