At which point on a phase diagram do you have a solid, liquid, and a gas at the same time? boiling point, triple point, melting point, critical point

4786 joules of heat are transferred to a 89.0 gramsample of an unknown material, with an initialtemperature of 23.0°c. what is the specific heat of thematerialif the final temperature is 89.5 °c?

What is a for cio3-, the chlorate ion?

What is the best describtion of the side of the moon that faces earth?