SiO 2 + 3C SiC + 2CO In an experiment, 155 g SiO 2 were reacted with excess C and 72.1 g SiC were recovered. Determine the % yield of SiC.

What is the number of atoms in 3.54 mol s

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.

11. phosphorus-32 is radioactive and has a half life of 14 days. how much of a 124 mg sample of phosphorus-32 is present after 56 days? a) 7.75 mg b) 15.5 mg c) 31.0 mg d) 62.0 mg