2P(s) + 3H2(g) 2PH3(g) ∆H°rxn = +11 kJ The reaction is ____thermic, heat flows ____, the bonds between the atoms become _____er In a reaction mixture of 16 grams of P and 1.4 grams of H2: The 16 grams of P are enough to form _______ grams of PH3 The 1.4 grams of H2 are enough to form _______ grams of PH3 The limiting reagent in the mixture is _______

Q: We can use Hess's Law (and some creativity!) to learn about the energetics of reactions that occur…

A:

Q: According to the given reactions, which of the following is not exothermic? SO2(g) – S(s) + O2(g) AH…

A: The reactions given are, 1) SO2 (g) -----> S (s) + O2 (g)                      ΔH = +199 KJ/mol.…

Q: Calculate the heat of reaction AH for the following reaction: H₂(g) + Cl₂(g) → 2 HC1(g) You can find…

A: The formula is :

Q: Determine the enthalpy for the reaction of oxygen and ammonia (NH3) gases  to form water vapor and…

A:

Q: In the process of forming solid LiF from its elements, the step which releases the most energy is:…

A: In the vaporization process, Li(s) metal transfer to Li (g) in ionization process of Li to Li+…

Q: what is the enthalpy change per mole of CO2 for the following reaction? CO(g) + 1 /2 O2(g)  CO2(g)

A:

Q: Consider the reaction. 2 Fe₂O, 4 Fe + 30₂ * AH = +824.2 kJ The formation of 35.0 g of O₂ results in…

A:

Q: Sulfur (2.34 g) was burned in a constant volume calorimeter with excess O₂ (g). The temperature…

A:

Q: The reaction between 0.474 g of magnesium and 200. mL of 2 M HCl resulted in an increase of 7.1°C in…

A: We have to find the number of moles of Mg in 0.464 g Mg.  The number of moles = mass /molar mass =…

Q: Below are two representations of a chemical reaction and a table of bond energies. Representation 1…

A:

Q: Physical constants that you may need: -19 Elementary Charge e = 1.60218 × 10¯ C Vacuum Permittivity…

A: Step 1: Given:Elementary charge, e = 1.60218 x 10-19 C.Vacuum Permittivity = 8.85419 x 10-12…

Q: Sulfur (2.55 g) was burned in a constant volume calorimeter with excess O₂(g). The temperature…

A: Here we have to determine ∆U per mole of SO2 in the  combustion of 2.55 g of sulphur.

Q: Calculating the heat of reaction from bond energies Calculate the heat of reaction AH for the…

A:

Q: 18. Use bond energies to estimate the energy of the reaction for the decomposition of one mol of…

A:

Q: Balance the following reactions, calculate [delta]Hrxn, calculate the energy released (or required)…

A:

Q: 8. The equation below represents the burning of carbon disulfide, CS20) in a calorimeter. CS20) +…

A:

Q: The bond enthalpy associated with a N-N single bond is 160 kJ/mol. Formation of N-N bond between two…

A:

Q: The incredibly heavy gas uranium hexafluoride, UFgg), is an intermediate compound in the production…

A: Given ,

Q: Consider the following reaction involving certain gas-phase compounds X, Y, and Z: X+ 2Y Z AH°xn =…

A: Interpretation -  To determine the total bond enthalpy of compound Z , if the total bond enthalpies…

Q: I'm not sure how to answer this question. The correct answer is in red.

A: Reactions are usually either endothermic or exothermic nature. They require heat for performing…

Q: The energy produced (-286 kJ/mol) in the reaction H₂ and O₂ comes from: A) Breaking the H-H and O=O…

A: The reactions are of two types Exothermic and endothermic,  in exothermic reactions heat is released…

Q: Calculate the amount of energy released when 50.9 g of iron oxide reacts with an excess of hydrogen…

A: Given balanced reaction is 4 H2 + Fe2O4 --> 2 Fe + 4 H2O First convert the given grams of iron…

Q: Which of the following is a correct formation reaction? Mark all that apply. a. co(g) +02(9) →…

A: Formation reaction :-  The chemical equation which represents the formation of one mole of a…

Q: 5. For the chemical reaction below (please note, this is the same as CH4 + Br2 → CH3Br + HBr; the…

A: when there is sufficient difference in electronegativity , then that bond is polar bond  where if…

Q: Consider the reaction below. 3D + 2 Q→ 2 E + 3 J AH = 566.8 kJ How many grams of Q must be used to…

A:

Q: For the reaction below: CH₂ + Cl₂ CH₂-Cl + H-Cl a. Estimate the gas phase enthalpy change using bond…

A: In a chemical reaction breakage of old bonds and formation of new bonds takes place therefore…

Q: [Reforences) Sulfur (2.67 g) was burned in a constant volume calorimeter with excess O2(g). The…

A: The amount of heat transferred in a system is calculated as follows,…

Q: Common bond energies The table below lists the average bond energies that you would need to…

A:

Q: Constants: • c-2.9979 x 108 m/s • h = 6.626 x 10-34 J s per one photon • R = 8.314 J/(K mol) =…

A:

Q: Thanks for helping! THIS is the equation N2H4 + O2 → N2 + H2O First just Use bond energy values…

A: The energy values (given) are: N-N = 159 kJ/mol N-H = 391 kJ/mol O-H = 463 kJ/mol O=O = 495 kJ/mol…

Q: What is the enthalpy change when 4.70 grams of HF(g) (molar mass= 20.0 g/mol) are formed by the…

A: The given reaction is,

Q: Use average bond energies to estimate the energy released when 25.0g CH4 undergoes complete…

A:

Q: Calculate the heat of reaction AH for the following reaction: CC14(g) + H₂(g) →CHC1₂(g) + HCl(g) You…

A: The formula is -From the given table, we can determine the heat of reaction.

Q: Consider the following reaction involving certain gas-phase compounds X, Y, and Z: X + 2Y  →  Z…

A: Bond enthalpy is also known as bond-dissociation enthalpy. It is the amount of energy required to…

Q: a. Calculate the enthalpy of reaction for: 2 CO(g) + O2(g) → 2 CO2(g) b. If 18.5 grams of carbon…

A:

Q: We can use Hess's Law (and some creativity!) to learn about the energetics of reactions that occur…

A:

Q: QUESTION 6 Use bond enthalpies to estimate AHrxn for the combustion of methane, CH4, the major…

A: Bond enthalpies can be used to estimate the heat of a reaction ΔH(reaction) = (sum of the bond…

Q: Question 7. Use the bond energies provided to estimate ΔH°rxn for the reaction below. CH3OH(l) + 2…

A: The given reaction is:CH3OH (l) + 3/2 O2 (g)   CO2 (g) + 2H2O (g)The bonds present on the reactant…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".