Balance 2Mg + O2 = 2MgO

Which statement about gases is true? They are made up of particles that always move very slowly. They are made up of particles that travel in a curved path when in motion. They are made up of hard spheres that vibrate quickly in stationary positions.

Compare the entropy of a firecracker before it is lighted to its entropy after it explodes

Which group in the periodic table contains the three elements with the highest electrical conductivities? OA) Group 8 B) Group 12 C) Group 11 D) Group 7

What must be satisfied for a hypothesis to be useful

All decrease in the magnitude of velocity is called

One light year is about 9 trillion kilometers. Arcturus is a star that is 37 light years from earth. If you are about 11 years old now, how old will you be when light that is leaving Arcturus today reaches earth?

What is melted rock and minerals found below earths crust

What do many bases have in common? A. They often release oxygen gas. B. They often form hydrogen ions. C. They often release hydrogen gas. D. They often form hydroxide ions.

What is 3 tenths+4tenths

A lunar eclipse can only occur at which lunar phase? And what about a solar eclipse?