THERMOCHEMISTRY Solving combustion thermochemistry problems Alec On a 10 day wilderness expedition you'll need to heat 3.0 kg of water to the boiling point each day. The air temperature will average 25 °C. You have available canisters of compressed propane (C,H) fuel, which you'll burn to heat the water. Each canister has 50. g of propane in it. What is the minimum number of fuel canisters you must bring? The standard heat of formation of propane at 25 °C is -103.85 kJ/mol. You'll probably find other helpful data in the ALEKS Data resource. do canisters: III

Magnesium metal is added to a coffee cup calorimeter containing 105.0 mL of 2.50 M hydrochloric acid. The temperature increased by 8.2°C. What lesson metal is placed in the calorimeter meter? Look at pic. The heat capacity and density a solution in the calorimeter is the same as those of water: 4.184 J/(g x degrees Celsius ) and 1.00 g/mL. Illinois it change in massive solution caused by adding magnesium and by escape of the hydrogen 

be sure your answer is correct and have the correct number of significant digits

Calculate the energy required to heat 403.0 mg of water from 36.8 °C to 57.0 °C. Assume the specific heat capacity of water under these conditions is 4.18 J-g .K . Be sure your answer has the correct number of significant digits. 0 0x10 ロ・ロ X μ 00 4 S

When 3.8 g A are reacted with 8.5 g D,  according to the balanced chemical equation below, 33 kJ of energy are released.  Please calculate the enthalpy for this reaction when 3 moles of G are produced.  2A + 3D = 2Z + 3G  given molar masses: A = 141.8 g/mole D = 63.996 g/ mole Z = 4.032 g/ mole G = 56.028 g/ mole

Express the quantity in the unit indicated and designate whether this heat is gained or lost by the substance a. The quantity of heat in calories when 162.5 grams of water undergoes a temperature decrease from 45.84 C to 40.00 C. b. The quantity of heat in Kilojoules when 43.5 Kg of chloroform ,CHCl3 has its temperature changed from 16.8 C to 22.3 C ( sp ht of CHCl3 = 0.971 KJ/kg- C)

Homework Question 1 Timer Notes Evaluate Feedback In Course Contents (GRADED) Homework Questions Material from June 6( The combustion of 4.83 g of butane in a bomb calorimeter with a heat capacity of 10.94 kJ/K results in a rise in temperature from 22.17 °C to 42.21 °C. Calculate the heat of combustion (in kl/g) of the butane Report your answer to three significant figures. 293 J Submit Anew Due in less than 24 hours 5 Previous Tries This discussion is closed. Send Feedback

Calculate the energy of combustion per gram of Olive Oil (kJ/g) if 29.9 mL of water is placed in the test tube and the temperature changes from 22.9 °C to 44.6 °C. The initial mass of the spirit burner is 204.60 g and the final mass is 204.51g. State your answer with correct significant digits. Notes: Include a negative sign if the reaction is exothermic Do not include units in your answer.

1. A thermometer placed in a solution undergoing a chemical reaction indicates an increase in temperature as the reaction proceeds. Is this reaction endothermic or exothermic? Describe if heat energy is lost or gained from the reaction (the system) to the surroundings. What is the sign of the enthalpy change (AH) of this reaction? 2. A student performs a reaction and determines the enthalpy change (AH) to be 31.4 kJ. Will the temperature of the surrounding solution increase or decrease as a result of this chemical process? 3. If you hold 3 grams of ice in your hand at room temperature, your hand will become cold. a) Is the reaction H,O(s) – H,O(1) endothermic or exothermic? b) In which direction does heat flow?

Please help me answer this thermochemistry question