MeO2C. MeO2C. OMe -OMe 1. NaH. DMF 2. HgOn No Heat Ph₂P=CH-Me 국 COzMe Me

Cl2 (g) + H2 (g) → 2 HCl (g) ΔH0rxn = ‒184.6 kJ 6. The reaction is ___________ as it _____________ heat. Group of answer choices A.exothermic, absorbs B.exothermic, releases endothermic, C.releases endothermic, absorbs D.Not enough information to determine

An unknown organic compound is being proposed as an alternative to gasoline. The enthalpy of combustion of this compound is 292kcal mol1. The density is 0.258g mL1. The molecular weight of this compound is 362g mol1. How much heat in kcal is released from combustion of 0.28 L of organic compound? Round your answer to 2 decimal places.

Predict the reagent(s) needed to produce this regiochemistry in this elimination reaction. •·||| Q A B C D H3O+ heat CH3OH CH3OH heat CH3ONa heat ( Done

6.D Macmillan Question 10 of 13 > 9= Calculate the heat of solution for KOH in kJ/mol. heat of solution = A chemist dissolved an 11.9-g sample of KOH in 100.0 grams of water in a coffee cup calorimeter. When she did so, the wat temperature increased by 26.0 °C. Based on this, how much heat energy was required to dissolve the sample of KOH? Assun the specific heat of the solution is 4.184 J/g °C. E OO Resources Lx Give Up? a HUAWEI P30 LEICA TRIPLE CAMERA Hint Check Answer Attempt 3 11:06 PM 11/21/2022 kJ/

IN B C. LI %#3 Assume that it is possible to heat water with perfect insulation (all the heat from combustion of ethanol is transferred to water). How much energy (in joules) is needed to heat 200.0 g of water by 10.0 °C? The heat capacity of water is 4.185 J/g · °C. energy: How many millimoles of ethanol would need to be burned to generate the amount of energy that is needed to heat 200.0 g of water by 10.0 °C? The heat of combustion of ethanol is –1368 kJ/mol. millimoles of ethanol: mmol What is the volume of ethanol required to heat 200.0 g of water by 10.0 °C? The density of ethanol is 0.78 g/mL. volume: MacBook Pro Q Search or enter website name 田) & %24 delete 4. 7. 5. R. P. D H. K. M alt gE MOSISO command option

Determine the amount of heat (in kJ) given off when 1.86 x 10° g of NO2 are produced according to the equation: 2NO(g) + O,(g) → 2NO2(g) AH = -114.6 kJ/mol (N=14, O=16) 2.32 x 10' kj 4.64 x 10' kj 2.32 x 10* kj 1.16 x 10° kj 4.64 x 10° kj

2 SO2 (g) + 2 H2O (1) → 2 H,S (g) +3 O2 (g) AHren 1124 kJ mol a. Is this reaction exothermic or endothermic? O endothermic O exothermic b. How many moles of gaseous SO2 must react if 2.46 kJ of heat are absorbed? number or fraction only mol

Which of the reaction below is an exothermic process and a combustion reaction?   a. Al2O3(s) + 3 C (graphite -> 2Al(s) + 3 CO (G) ΔH= 1344.5kJ/mol b. S(s) + (g) -> SO2(g) ΔH = -296.8 kJ/mol c. PH(3) + 2O2(g) -> H3PO4 Δ H= -12867.4 d.) C4H10(g 13/2O29(g) -> 4CO2(g) + 5H20 ΔH= -890 kJ/mol

1. What is energy? What are the various units that energy is measured in?2. What do the variables in ? = ??Δ? mean?3. What does Δ? = ?? − ?? mean? What is the meaning of a negative Δ??4. 20 grams of water (heat capacity = 4.184 J/(gOC)) increases in temperature by 15OC. How much heat energy was required?5. What is a coffee cup calorimeter? Why do we want such a calorimeter to beinsulated?6. Explain how temperature change with the same amount of energy supplied will varydepending on the heat capacity of a substance.7. What is an exothermic reaction? An endothermic reaction?8. What happens with energy when a chemical bond forms? When a bond breaks?9. What is Δ? called? What does it mean if Δ? is positive? Negative?10.What is Hess’s Law?11. If ? + ? → ??, Δ? = −100 ?? and ?? → ? + ?, Δ? = +50 ??, then find Δ? for:? + ?? → ? + ??, Δ? = ? ?12.What is the relationship between frequency and wavelength of light?13. Identify all variables in ? = ℎ? and ? =??14.Calculate the frequency of 450 nm…