a piece of copper is heated to 100C and added to 80g of water at 12C. the final

Question

a piece of copper is heated to 100C and added to 80g of water at 12C. the final temperature of the mixture is 20C. some heat is transferred to the 200 g aluminum container, what was the mass of the copper ems. Show all your work for partial credit. Points as indicated. (15 pts.) A piece of copper-is heated to 1000 C and added to 80 g of water at 120 C. The final temperature of the mixture is20.C. Someheat is transferred to the 200 g aluminum contain What was the mass of the copper? 2. The formula for carbon dioxide is CO2 a) (3 pts.) How many grams are in a mole of carbon dioxide? b) (3 pts.) Find the mass in kg of a molecule of CO2.

Explanation / Answer

here,

mass of water , m1 = 80 g

mass of alumunium , m2 = 200 g

mass of copper be m

using conservation of heat energy

heat gained by water and alumunium = heat lost by copper

m1 * Cw * ( 20 - 12) + m2 * Ca * ( 20 - 12) = m * Cc * ( 100 - 20)

80 * 4.186 * 8 + 200 * 0.9 * 8 = m * 0.368 * 80

solving for m

m = 140 g

the mass of copper is 140 g

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