Asample of fluorine gas exerts a pressure of 900 mmhg. when the pressure is changed to 1140 mmhg, the volume is 250 ml. what was the original volume?

100mg magnesium reacts with 20ml of 1.0m hcl

Write the symbol for every chemical element that has atomic number greater than 3 and atomic mass less than 12.0 u.

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.