Chemistry

Chemistry, 05.10.2019 17:30, smelcher3900

What is the specific heat of a substance that requires 21 joules of heat to allow 10 grams of it to change temperature by 15°c?

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Physics, 08.07.2019 08:00, stinkaq

Every substance has a specific value of heat required to change the temperature of 1 gram of the substance by 1 degree celsius. specific heat is found by using the equation q=mcδt, where q represents heat in joules, m represents mass in grams, δt is the change in temperature in celsius, and c is the coefficient constant for a substance. find the units for the coefficient c.

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Physics, 29.08.2019 16:50, puchie1225

Every substance has a specific value of heat required to change the temperature of 1 gram of the substance by 1 degree celsius. specific heat is found by using the equation q=mcδt, where q represents heat in joules, m represents mass in grams, δt is the change in temperature in celsius, and c is the coefficient constant for a substance. find the units for the coefficient c. a) c=j·g·°c b) c=j·g/°c c) c=j/g·°c d) c=g·°c/j

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Physics, 30.08.2019 07:50, leahstubbs

Ahot 0.25-kg piece of iron is placed in a calorimeter containing room temperature water. how much heat is lost by the iron as it cools from 125c to 75c? how much heat is gained by the water? 5. the temperature of 2.500 kg substance rises from 20 oc to 60 oc when it absorbs 23,500 joules of heat. calculate the specific heat capacity of the substance. what is the identity of the substance? 7. using the specific heat capacities of water and steam, explain which would be a better coolant for your car's engine if equal masses of each were used. 8. a cube of lead has a temperature of 18c. a second identical cube of lead is twice as hot. what is the temperature of the second lead cube? 2. for each pair of substances, identify the substance that will take more energy to heat from 20c to 100c and explain why. specific heat for water- 4180 j/kg°c. specific heat for silver- 235 j/kg°c. specific heat for iron- 450 j/kg°c. a. 30 g of water vs. 300 g of water b. 500 g of iron vs. 500 g of silver

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Chemistry, 02.09.2019 05:10, Jasten

The specific heat of a substance is 2.01 j/g·° c. if given 10.3 grams of the substance and if 542 joules of heat is absorbed, what is the change in temperature of the substance?

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