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How much heat does 25g aluminum give off as it cools from 95celsius to 30celsius?

A 300g lead is heated to 95celsius and is then dropped into 100g of water at 10celsius. If the final temperature is 15celsius. What is the specific heat of the lead?

a 1240 kg automobile stops in a distance of 41m. if initial velocity was 22.5m/s, what force did the road exert on the car to stop it? Answer pls... Thank You

A 300lb car is moving at constant velocity onn a level concrete road. How much force is needed to keep it moving if the u=0.04

A 500g copper at 100celsius is placed in a 200g water at 25celsius which is contained in an aluminum calorimeter that has a mass of 400g. If the final temperature of the whole system is 30celsius, find the specific heat of the lead.