Iam in a state of panic and need the of someone smart

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.

Name the element in group 17, period 2. (periodic table)

How many moles of al3+ ions are in 1.25 moles of al2o3