Calculate the amount of heat transferred when 27.0 g of CH3OH(g) is decomposed by this by 2CH3OH(g) to 2CH4(g)+O2(g) delta H=+252.8kJ at constant pressure.

Q: Suppose that the reaction of 2.172 moles consumes 3.21 kJ of heat. What is the molar enthalpy of the…

A: The answer to the following question is :

Q: 3- Calculate the molar enthalpy change when tungsten is heated by 15 K.

A: From standard sources we get, the molar heat capacity of tungsten is 24.2 J/mol K

Q: From the following data, calculate the standard enthalpy at 391.4 kelvin for the following…

A:

Q: calculate the molar heat capacity of a mercury metal with specific heat capacity of 0.140 j/g0c.

A: Molar heat capacity is the amount of heat required to increase the temperature of one mole…

Q: If you have 7 moles of a diatomic ideal gas (such as oxygen or nitrogen), how much heat is required…

A: Given data  The number of moles of a diatomic ideal gas (such as oxygen or nitrogen),  n =  7 moles…

Q: Calcium carbide, CaC2, is manufactured by the reaction of Cao with carbon at a high temperature.…

A: The question is based on the concept of chemical thermodynamics. We have  to identify the type of…

Q: Calculate the standard enthalpy for the following reaction at 25°C: C(graphite) + H2O(g) → CO(g) +…

A:

Q: Suppose that the reaction of 1.116 moles consumes 30.34 kJ of heat. What is the molar enthalpy of…

A: Enthalpy change  is associated  with change of one substance undergoing  any change is called as…

Q: How much heat is produced by burning 4.00 moles of acetylene under standard state conditions?

A: Moles of acetylene= 4

Q: When 8.6 grams of a certain compound is dissolved in 78 grams of water in a calorimeter, the…

A:

Q: Suppose that the reaction of 1.326 moles consumes 25.27 kJ of heat. What is the molar enthalpy of…

A:

Q: The standard enthalpies of formation of gaseous propyne (C3H4),  propylene (C3H6),  and propane…

A:

Q: 2. The first step in the industrial recovery of zinc from the zinc sulfide ore is roasting, that is,…

A: Balanced chemical reaction is given by:2ZnS(s) + 3O2(g) → 2ZnO(s) + 2SO2(g)        ∆H = –879…

Q: The standard enthalpy change for the following reaction is 270 kJ at 298 K. 2 HNO3(g) N2(g) + H2(g)…

A: Heat of formation of HNO3 = -135KJ/mol

Q: How much energy is required to raise the temperature of 12.9 grams of solid chromium from 20.2 °C to…

A:

Q: Potassium nitrate, KNO,, has a molar mass of 101.1 g/mol. In a constant-pressure calorimeter, 19.3 g…

A: In the given solvation process the temperature of the water is decreased. Hence the solvation…

Q: How much heat, in joules, must be added to a 75.0 g block of a metal alloy with a specific heat of…

A: Given, Mass of the substance, m = 75.0 g Initial temperature, T1 = 25 oC Final temperature, T2 = 775…

Q: The enthalpy of sublimation of calcium at 25 °c is 178.2 kJ mol- 1.How much energy (at constant…

A: The overall process for the conversion of calcium to plasma is shown below.…

Q: The flame in a torch used to cut metal is produced by burning acetylene (C2H2) in pure oxygen.…

A:

Q: The standard enthalpy change for the following reaction is 1.08×103 kJ at 298 K.UO2(s) U(s) +…

A: Given that, a chemical reaction is UO2(s) → U(s) + O2(g). Also, the standard enthalpy change for the…

Q: Determine the amount of heat (in kJ) given off when 1.26 × 104 g of ammonia are produced according…

A: enthalpy of reaction is energy needed for completion of the reaction.

Q: The standard enthalpy change for the following reaction is 1.08×103 kJ at 298 K. UO2(s) U(s) +…

A: Given;

Q: Exactly 46.33 kJ of heat is transferred to a 1.389 kg slab of nickel at a temperature of 12.7°C. (a)…

A:

Q: Assuming that 1.00 ng of H2O molecules assembled in a way that made of 18 water molecules at the…

A: Given: mass of H2O = 1.00 ng molar mass of H2O = 18.0 g/mol Heat energy released = 2.0×10-6 J

Q: Determine the standard enthal py of formation for the following reaction! СНЗСІ + CI2 -CH2CI2 + HCI

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: Calculate the standard enthalpy of formation of C2H6 from its elements using the following data:

A: In a chemical reaction, the enthalpy of reaction (ΔHreaction) is the difference in enthalpy between…

Q: The enthalpy of fusion of aluminum is 10.7 kj/mole. How many grams of aluminum can be melted by…

A:

Q: Consider the hypothetical reaction: A + 3B → 2C, which gives ΔH0 = 357.2 kJ. Determine the enthalpy…

A: To determine the enthalpy of the reverse reaction, just change the sign of the given enthalpy value.…

Q: Does the standard enthalpy of formation of H2O(g) differ from ΔH° for the reaction 2H2(g) + O2(g) ⟶…

A: The change in enthalpy of the reaction is equal to the difference between the enthalpies of…

Q: 45.0 g of copper (Cu) at -15.4 oC absorbed 613 J of heat and the final temperature is measured at…

A:

Q: The first step in the industrial recovery of zinc from the zinc sulfide ore is roasting, that is,…

A: Given: molar mass of ZnS = 97.474 g/mol

Q: A reaction between Mg and aqueous hydrochloric acid was performed to determine the heat of the…

A:

Q: The enthalpy increase of N; when heated between 300 and 1500 does not exceed 100 kl/mol.

A: Here we have to predict whether given statement is true and false.  The statement given is " The…

Q: What mass of silica glass can be heated from 31.7 °C to 95.8 °C by the input of 237,825 J of heat…

A:

Q: What is the enthalpy of the reaction at 298 K, in kJ, for. 2 H2 (g) + 02 (g) 2 H20 (g)

A: ∆H for reaction is the difference of products of energy to the reactants of energy.

Q: 2Fe+3CO2 3CO+ Fe2O3 AH = 24.7 kJ %3D How much heat is transferred if 15 g of iron is used?

A: The balanced equation is  2 Fe + 3 CO2 -----------> 3 CO + Fe2O3 Molecular weight of Fe = 55.845…

Q: Zinc is commonly found in nature in the form of the min- eral sphalerite (ZnS). A step in the…

A: (a) Given reaction:

Q: How much will the temperature of a 200g water at 95°C be reduced when a 45 g metal ( cp = 0.24 J/g…

A: The heat absorbed or released is given by : q = m. C. (T final - T initial ) Where  q = heat…

Q: What is the heat capacity of 2.00 moles of liquid water?

A: Given: heat capacity of 2.00 moles of liquid water   To find: find capacity of 2.00 moles of liquid…

Q: What is the standard enthalpy of formation of carbon dioxide?

A: The change in enthalpy when one mole of compound is created from its constituents from their most…

Q: Standard Enthalpy of Reaction – Hess’s Law  Calculate the enthalpy of the following chemical…

A:

Q: Calculate the heat generated by a reaction mixture of 8.4 L of sulfur dioxide at 1.00 atm and 273 K…

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: As a bipropellant, hydrogen peroxide (H2O2) is decomposed to burn a fuel as an oxidizer. 2H2O2 → O2…

A: A. From the given reaction it is evident that 2 moles of H2O2 gives 2 moles of H2O and one mole of…

Q: Calculate the standard enthalpy of formation for C3H6O (l) from its combustion using the following…

A:

Q: Calculate the standard molar enthalpy of formation of NO(g) [N2(g) + 02(g) → 2NO(g)] from the…

A: Given reactions are the following. N2g+2O2g→2NO2g   ∆H0298=66.4 KJ2NOg+O2g→2NO2g   ∆H0298=-114.1 KJ

Q: Suppose that the reaction of 2.857 moles consumes 2.45 kJ of heat. What is the molar enthalpy of the…

A: The molar enthalpy of a reaction is change in enthalpy of one mole substance that is undergoing…

Q: The reaction of 10.0 mL of 0.125 M NaOH and 5.0 mL of 0.500 M HNO3 gives a temperature rise of 1.36…

A: Answer: Acid and base neutralization reaction is an exothermic reaction and heat of neutralization…

Q: What is the change in enthalpy when 38.2 g of CH4(g) reacts completly with O2(g) to form CH3OH(g) at…

A: The reaction is:

Group 14 Elements

The following elements come under group 14 of the periodic table.