What is the change in the oxidation number of sodium in the following reaction
2Na + 2H20 - 2NaOH + H2
A. O to -2
B. O to +2
C. +2 to - 1
D. O to +1
E. +2 to 0

How is the composition of a meteorite relevant to finding out the composition of earth's core?

Compare the equilibrium constants for the systems shown in the table. which favors products the most? which favors products the least? rank these systems in order from most to least in terms of favoring products rather than reactants. d > b > a > c c > a > b > d b > c > d > a a > d > c > b

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.