Apiece of lead and a piece of zinc have a combined mass of 50.0 grams. the two pieces of metal are heated to 85.0 °c and then both are added to the same thermos bottle containing 100.0 grams of water at 22.2 °c. if the final temperature of the water and metal is 23.9 °c, what was the mass of the lead?

m lead = 30.268g

Explanation:

q = m ΔT Cp

T final = 23.9C

q lead + q zinc = q water

m lead + m zinc = 50g

m lead x (85-23.9) x 0.130 + m zinc x (85-23.9) x 0.39 = 100 x (23.9 - 22.2) x 4.18

7.943 m lead + 23.829 m zinc = 710.6 (m lead = 50g - m zinc)

m lead = 30.268g

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

2b2t

explanation:

2b2t