I need help with both are they right please read the questions my grades dropped and if I don’t get them up I can’t go out of town Friday please help me:( !

If 22.5 liters of oxygen reacted with excess of hydrogen, how many liters of water vapor could be produced?

Imagine that a new planet is discovered with two moons of equal mass: moon a and moon b. the mass of the new planet is greater than the combined mass of its moons. moon a is farther away from the new planet than moon b. what is the planet's gravitational pull on moon a compared to the planet's gravitational pull on moon b? the planet's gravity repels moon a with a greater force than it repels moon b, which is why moon a is farther away. the gravitational pull on moon b is greater than on moon a because moon b is closer to the new planet than moon a. the gravitational pull on moon b is greater than on moon a because moon b is farther away from the new planet than moon a. the gravitational pull on moon a is the same as the gravitational pull on moon b because distance does not affect the planet's gravity.

Identify the lewis base in this balanced equation: fe3+ h2o fe(h2o)63+