A carbon atom has a mass number of 12 and an atomic number of 6. How many neutrons does
it have

After cloud droplets form, what must happen to them for precipitation to occur?

Astudent reacts 13 moles of iron with 21 moles of oxygen according to the following equation:

Great amounts of electromagnetic energy from our sun and other bodies in space travel through space. which is a logical conclusion about these electromagnetic waves? their energy must be very their frequency must be very low these waves can travel without a medium they only travel through a vacuum of space