Given 390 moles of potassium chlorate (KClO3) how many moles of oxygen (O2) would be produced? 2 KClO3 2 KCl + 3 O2

a.780 moles of O2
b.260 moles of O2
c.585 moles of O2
d.130 moles of O2

What is the temperature of one mole of helium gas at stp?

Why does the sun appear to be the brightest star in the sky? a- its apparent brightness is much greater than other stars. b- it burns more gas, making it brighter than any other star. c- it is the largest star in the galaxy, so it is the brightest star. d- its relative distance to earth is closer than the other stars.

Which of the following describes a compound? (hint: carbon and oxygen bo a. a piece of pure carbon, containing only carbon atoms b. oxygen gas surrounding a solid piece of carbon c. a substance made of two oxygen atoms for each carbon atom carbon and oxygen atoms mixed without being bonded together