How many joules are needed to change 42.3 g of lead from 76.8 °C to 44.3 °C. ? The specific heat of lead is 0.130 J/g °C.

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City a and city b had two different temperatures on a particular day. on that day, four times the temperature of city a was 8â° c more than 3 times the temperature of city b. the temperature of city a minus twice the temperature of city b was â’3â° c. what was the temperature of city a and city b on that day? city a was 5â° c, and city b was 4â° c. city a was 3â° c, and city b was â’1â° c. city a was 8â° c, and city b was â’3â° c. city a was 5â° c, and city b was â’5â° c.

Fill in the coefficients that will balance the following reaction: a0cr2(so4)3 + a1agno3