Which heavenly bodies are involved in causing the earths tides?

only the moon and earth.
only the earth.
the earth, moon, and sun.
all the planets plus the moon.

An ionic compound can conduct electricity when a it is dissolved in water b its crystals are ground into powder c it is in solid form d it is heated to just below its melting point

Give one example to show that when substances are mixed,it may result in a chemical or a physical change depending on the conditions.

Atank is filled with an ideal gas at 400 k and pressure of 1.00 atm . part a the tank is heated until the pressure of the gas in the tank doubles. what is the temperature of the gas?