Please help Lots of points. Please I need really quick!! I'd really appreciate it

A 24.0 grams sample of copper was heated from 25.0˚C to 500.0˚C, 4378J of heat were absorbed, what is the specific heat of copper?

.384

2.60

49909200

8.77

An aqueous solution of calcium hydroxide is standardized by titration with a 0.120 m solution of hydrobromic acid. if 16.5 ml of base are required to neutralize 27.5 ml of the acid, what is the molarity of the calcium hydroxide solution?

As you move from right to left on the periodic table the atomic radius fill in the blank

Which statement describes evidence of a chemical reaction? a) ice melting eliminate b) water boiling c) lighting a match d) grape juice freezing