Question 9A calorimeter holds 50 g water at 29.0°C. A sample of hot iron is added to the water, and the final temperature of the water and iron is 22.0°C. What is the change in enthalpy associated with the change in the water’s temperature?Note: The specific heat of water is 4.18 .Show your work and circle your answer.PENCILTHINBLACK

An insulated calorimeter contains 100 g of water at 22 °C. A chemical reaction causes the temperature to increase by 6 °C. Given that water has a specific heat of 4.184 J/g°C, how much heat was transferred to or from the water? Group of answer choices-2.5 kJ-1.5 kJ-2.0 kJ-1.0 kJ

A 50.9g sample of iron, which has a specific heat capacity of 0.449·J·g−1°C−1, is put into a calorimeter (see sketch at right) that contains 100.0g of water. The temperature of the water starts off at 20.0°C. When the temperature of the water stops changing it's 23.7°C. The pressure remains constant at 1atm.Calculate the initial temperature of the iron sample. Be sure your answer is rounded to the correct number of significant digits.

When 10 grams of hot water cool by 1°C, the amount of heat given off is Group of answer choices41.9 N41.9 Jnone of the above41.9 Cal

A sample of water was heated and allowed to cool down. The energy transferred to the surroundings was 132 300 J and the temperature changed from 70 °C to 25 °C.The specific heat capacity of water is 4200 J/kg°C.What was the mass of the sample of water?You must include units with your answer.

An ideal gas has a gas constant R = 0.3 kJ/kg-K and a constant-volume specific heat Cv = 0.7 kJ/kg-K. If the gas has a temperature change of 100 degrees C, what is the change in enthalpy?Question 2Select one:a.30 kJ/kgb.70 kJ/kgc.100 kJ/kgd.insufficient information to determine