Plz help me ! I hate apex

Your 249 ml cup of coffee is too hot to drink when served at 82 degree celsius. what is the mass of an ice cube taken from a -21 degree celsius freezer, that will cool your coffee to a pleasant 54 degree celsius. specific heat of the water is 4190 j/kg c, specific heat of ice is 2090 j/kg c, heat of fusion of ice is 3.33 x 10^5 j/kg

Determine the maximum r-value of the polar equation r =3+3 cos 0

Which notation is used to represent an alpha particle? a. b. c. d.