How much heat is evolved when 27.0 g of glucose is burned according to this equation? C6H1206 + 602→6CO2+ 6H2O; A H comb. = -2808 kJ/mol %3D

Consider the following reaction carried out under constant pressure         5Cl2(g) + 2P(s) → 2PCl5(g)         Δ Hrxn = -749.8 kJCalculate the heat associated with the complete reaction of 84.0 g of Cl2 with 20.6 g of P. -6.15×102 kJ -1.78×102 kJ -4.99×102 kJ -8.88×102 kJ -2.50×102 kJ

4. Consider the equations for these reactions: % N2 + % O2 → NO NO2 → NO + % 02 AH = +90.4 kJ AH = +56.5 All reactants are gaseous. What is the heat of formation (AH;) for NO2 gas?

The heat of reaction for the combustion of benzene (C6H6) is –3909.9 kJ. 2 C6H6 15 O2 → 12 CO2 + 6 H20 What would be the heat change when 161.54 g of benzene is burned in kilojoules?

2. A solid substance has a mass of 250 grams. It is cooled by 25.00°C and loses 4.937 kJ of heat. What is the specific heat capacity of the substance? 20 3. A 10.0 g sample of pure acetic acid, CH3CO2H, is completely burned. The heat released warms 2.0 L of water from 22.3°C to 39.6°C. I MAR a) Assuming that no heat was lost to the calorimeter, what is the molar enthalpy change of the complete combustion of acetic acid? Express your answer in kJ/mol. b) Will the bonds in the products be longer or shorter than the bonds in the reactants?

Which is not a factor of an endothermic reaction? OAHIS negative. O AH is on the reactant (left) side of the reaction. O Heat is absorbed. O AH is positive.

A certain reaction has Ho = -43.40 kJ and So = 23.20 J/K.(a) Is this reaction exothermic, endothermic or isothermic (neither)?This reaction is________      .(b) Does this reaction lead to a decrease, an increase, or no change in the degree of disorder in the system?This reaction leads to_______      in the disorder of the system.

Use the References to access important values if needed for this question. When a solid dissolves in water, heat may be evolved or absorbed. The heat of dissolution (dissolving) can be determined using a coffee cup calorimeter. Thermometer Cardboard or In the laboratory a general chemistry student finds that when 14.72 g of BaBr2(s) are Styrofoam lid dissolved in 101.00 g of water, the temperature of the solution increases from 22.80 to 25.27 °C. The heat capacity of the calorimeter (sometimes referred to as the calorimeter constant) was determined in a separate experiment to be 1.82 J/°C. Nested Styrofoam cups Based on the student's observation, calculate the enthalpy of dissolution of BaBr2(s) in kJ/mol. Reaction occurs in solution. Assume the specific heat of the solution is equal to the specific heat of water. AHdissolution = kJ/mol

The overall reaction in commercial heat packs can be represented as 4Fe(s) + 302(g) →2Fe₂O3 (8) AH = -1652 kJ a. How much heat is released when 2.20 mol iron is reacted with excess O₂? kl released b. How much heat is released when 1.83 mol Fe2O3 is produced? kJ released c. How much heat is released when 2.20 g iron is reacted with excess O₂? kJ released d. How much heat is released when 11.8 g Fe and 2.61 g O2 are reacted? Submit Answer [Review Topics] kl released Retry Entire Group [References] 8 more group attempts remaining

An amount of 10.24 kcal of heat is added to a 35.0g sample of a liquid at 25.00 °C. The final temperature is 87.35 °C. What is the specific heat of the substance in cal/g °