31 Answered Questions for the topic Thermochemistry

Thermochemistry Chemistry

02/18/20

What is the relation between Molar enthalpy and Change in enthalpy? How do we use them together?
If I calculate Q=mc(delta t) as Q= (54.25 g)(4.19 J/g C)( 6 C) and get 1363.845 J. How do I convert this into change in enthalpy and molar enthalpy? This was done for a Calorimetry... more
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11/24/19

A coffee cup has a heat capacity of 62.6J∘C. If the coffee cup's temperature increases by 1.20∘C, how much heat has it absorbed?
Round your answer to the nearest tenth.
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11/24/19

An unknown metal absorbs 23.8J of heat, and its temperature increases by 15.4∘C. What is the heat capacity of the metal?
Round your answer to two decimal places.
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Thermochemistry Chemistry

01/30/19

Calculating Work in Chemistry
I cannot understand these math concepts, and it would be great if someone could help me understand them!A piston containing 1.5 L of gas at 1.00 atm is compressed to 1.25 L. Calculate the value for... more
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Thermochemistry Combustion Heat Methane

11/21/14

Thermochemistry: Heating water with Methane
I'm stuck on this one   How many grams of methane must be combusted to heat 1.00 kg of water from 25.0 °C to 90 °C, assuming H2O(l) is the product of the reaction and no heat is lost to the... more
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Thermochemistry Heat Ethanol Final Temperature

11/21/14

Thermochemistry
I'm not sure what I need to do here...   If 25.0 g of ethanol at 5.0 °C is mixed with 50.0g of ethanol at 75.0 °C, what with the final temperature of ethanol be, assuming no heat is lost to the... more
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