How do you calculate how much energy it takes to heat a certain amount of a certain material to a certain temperature? I have access to a latent heat table and specific heat constant table. Thanks for the help! Some examples:
1. Heat 2 kg ice from –5°C to 0°C
2. Melt 2 kg ice at 0°C
3. Heat 2 kg water from 0°C to 100°C

Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.

List and describe the neurological effects of the vocs and other air pollutants,as described by dr.theo colborn

Show how to convert the temperature 84.7° c to kelvin. include all steps and label the final answer.