Given the following chemical reaction: 2 o2 + ch4 co2 + 2 h2o what mass of oxygen is required to completely react with 20 grams of ch4? 6 c 12.01 carbon 1 h 1.01 hydrogen 8 o 16.00 oxygen a. 10 grams o2 b. 20 grams o2 c. 80 grams o2 d. 144 grams o2

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.