When burning 0.25 g of CH3OH in a calorimeter bomb with a heat capacity of 1.50 kJ / 0C, it increases the temperature of the calorimeter bomb by 0.45 0C. How many kg of CH3OH (methyl alcohol) should be burned to obtain 2.76x105 kJ of heat? (CH3OH = 32 g / mol)

A 33.4 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter containing a certain mass of water.  If the temperature rose from 35.0 to 74.8°C, how much water, in kg, must the bomb calorimeter have contained?  The molar mass of ethanol is 46.07 g/mol.  Assume that the calorimeter doesn't absorb any heat.  The specific heat of water is 4.184 J/g °C.  C2H5OH(l) + 3 O2(g)  →  2 CO2(g) + 3 H2O(g)     ΔH°rxn = -1.24 x 103 kJ/mol

A 36.7 g sample of ethanol (C2H5OH) is burned in a bomb calorimeter containing a certain mass of water. If the temperature rose from 35.0 to 75.2°C, how much water, in kg, must the bomb calorimeter have contained? The molar mass of ethanol is 46.07 g/mol. Assume that the calorimeter doesn't absorb any heat. The specific heat of water is 4.184 J/g °C. C2H5OH() + 3 O2(g) → 2 CO2(s) +3 H20(g) AH°rxn 1.24 x 103 kJ/mol Please do not include units in your answer. Assume all numbers have at least 3 sig figs.

Use the following information to answer Questions 6-9: A sample of NH4NO3 with a mass of 5.0 g is dissolved in 40.1 g of deoinized water in a calorimeter.  The initial temperature of the water is 21.2 oC.  The final temperature of the solution is 15.4 oC.  The calorimeter constant = 25.2 J/oC. Is the following statement true or false? This process is exothermic.  True  False

You have 8.99 g sample of an unknown salt (MM = 116.82 g/mol). It is dissolved in 150.00 g water in a coffee cup calorimeter. Before placing the sample in the water, the temperature of the salt and water is 23.72°C. After the salt has completely dissolved, the temperature of the solution is 28.54°C. What is the Mass inside calorimeter (g)? Change in Temp inside calorimeter (C)? How much Heat gained (J)? Total Heat? How many mols of the unknown salt? What is the change in empalthy?

Mixing 50 ml of HCI ( 2.0 M) with 50 ml of NaOH ( 2.0 M ) raises the temperature of the calorimeter from 23.0 C to 31.0 C. What is the heat of reaction per mol of HCI ? 40.3 KJ/mol 32.2 KJ/mol O 38.4 KJ/mol 33.5 KJ/mol

A 6.55 g sample of an unknown salt (MM = 116.82 g/mol) is dissolved in 150.00 g water in a coffee cup calorimeter. Before placing the sample in the water, the temperature of the salt and water is 23.72°C. After the salt has completely dissolved, the temperature of the solution is 28.54°C. Wht is the change in teperature in celcios inside the calometer? was the dissolution process endothermic or exothermic?   how much heat, in J, was hained b the solution? assume the specific heat of the solution is the same as water, 4.184 J/g. celcius

4. 30.0 g of a substance (molar mass: 46 g/mo) required 262 J of heat to raise its temperature from 32.0°C to 37.4°C. What is the specific heat per gram and per mole of this substance?