PLEASE SOMEONE HELPP 345 g of silver at 300°C is placed in a 125 g Iron calorimeter that contains 400 g of water at 20.0°C. What is the final temperature?
O 115 ° C
O 32.5 °C
O 21.3 °C
O 35.7 °C

Atank has a shape of a cone with a radius at the top of 2 m and a height of 5 m. the tank also has a 1 m spout at the top of the tank. the tank is filled with water up to a height of 2 m. find the work needed to pump all the water out the top of the spout. (use 9.8 m/s2 for g and the fact that the density of water is 1000 kg/m3.)