Homework Answers
The 
of the Mg and O2 is 0, because this's pure elements. However, the
of the MgO is 601,83Kj/mol. The moles of the Mg reacted
completely, so, this is the limited reactive. As a result:
So, the 
is:
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What is the change in enthalpy in kilojoules when 2.30 mol of Mg is completely reacted...
7.) Given the following reaction: 2 Mg (s)+ O2 (g) 2 MgO (s) AH 1204 kJ/mol...
7.) Given the following reaction: 2 Mg (s)+ O2 (g) 2 MgO (s) AH 1204 kJ/mol a.) Calculate the mass of magnesium oxide formed if a reaction gives off 395 kJ of heat. b.) Draw a potential energy diagram for the reaction. Be sure to label each axis, the reactants, products, enthalpy of reaction, and activation energy on your diagram.
help me solve 1-3 Input Data Reactant Mg MgO Mass (9) 2300 104 Volume (mL) 100.0...
help me solve 1-3
Input Data Reactant Mg MgO Mass (9) 2300 104 Volume (mL) 100.0 1000 AT (C) 10.4 9.6 Calculated Enthalpies of Reaction Mg(s) + 2 HCl(aq) --> MgCl, (aq) + H29) AH = -459.83 kJ/mol MgO(s) + 2 HCl(aq) -> MgCl2(aq) + H20(0) AH = -155.66 kJ/mol Mg(s) + 4029) -> Mg(s) AH = -589.99 kJ/mol Problem: Solve for the following enthalpy changes 1) When 6.07 g NaOH(s) is reacted with 200.0 mL 0.759 M HCl(aq), the...
help help help pls! 17. The value of AH° for the reaction below is -790 kJ/mol....
help help help pls!
17. The value of AH° for the reaction below is -790 kJ/mol. What is the enthalpy change accompanying when 0.95 g of S is completely reacted? 2S (s)302 (g) -2SO3 (g) 18. What is the enthalpy of the following reaction: 4 HCI(g) + O2(g) Given the following thermochemical equations: H2(g)+Cla(g)-2 HCI(g) 2 H2(s)O2(g)- 2 H20(g) 2 Cl2 +2 H2O (g)? AH -185 kJ AH-483.7 kJ
A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s)—Mg(NO3),(s) +...
A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s)—Mg(NO3),(s) + H2(9) AH=-443. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ 443 kJ x 6 Mg(NO3),(s) + H2(g) → 2HNO3(1) + Mg(s) HN05(69) + Mg(s) – į Mg(NOx),() + <H() 4Mg(NO3),(s) + 4H, (8) — 8HN0g() + 4Mg(s) [kJ OkJ
A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s) Mg(NO3),(s)...
A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s) Mg(NO3),(s) + H2(9) AH--443. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction W HN0,0) + Mg(6) – Mg(NO),(m) + H,@) 4Mg(NO), 6) + 4H, 6) - BHNO, () + 4Mg() Mg(NO),6) + H, (B) — 2HNO, (1) + Mg(6)
A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s) Mg(NO3),(s)...
A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s) Mg(NO3),(s) + H2(9) AH=-443. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ 4HN03(1) + 2Mg () — 2Mg(NO3),(5) + 2H, (6) Mg(NO3), (5) + H, (8) — 24NO3 (1) + Mg () xs ? kJ 3Mg(NO3), (s) + 3H, (8) — 6HNO3(1) + 3Mg(s)
Calculate the enthalpy change when 1 kg ice melts. AHfusion = 6.009 kJ/mol 18. a. 111...
Calculate the enthalpy change when 1 kg ice melts. AHfusion = 6.009 kJ/mol 18. a. 111 kJ/mol b. 223 kJ/mol c. 334 kJ/mol d. 445 kJ/mol Assume that a gummy bear consists 100% of glucose, CeH12O6 (MW- 180 g/mol). A gummy bear 20. weighs 228 mg. What is the heat of reaction for the total combustion of one gummy bear in a reaction with molten potassium chlorate, KCIO,? 4 KclOs(s)+CaH12O6(s) = 4 KCI (s) + 6 CO2(g) + 6 H2O(g);...
What is the change in enthalpy for the reaction when 2.00 mol of iron(II)oxide, FeO, reacts...
What is the change in enthalpy for the reaction when 2.00 mol of iron(II)oxide, FeO, reacts to form Fe 3O 4( s)? 6FeO( s) + O2( g) 2Fe3O 4( s) ∆H rxn = - 635 kJ/mol rxn
4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) AH = -1652 kJ (a) How much heat is released when 3.54 mol iron are reacted with exce...
4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) AH = -1652 kJ (a) How much heat is released when 3.54 mol iron are reacted with excess O2? Ok] (b) How much heat is released when 1.48 mol Fe2O3 is produced? CJ) (c) How much heat is released when 2.50 g iron are reacted with excess O2? DJ (d) How much heat is released when 12.6 g Fe and 1.02 g O2 are reacted? CkJ
What is the mole of magnesium, ?️H per mol of MgO, ?️H per 1 mole Mg?...
What is the mole of magnesium, ?️H per mol of MgO, ?️H
per 1 mole Mg?
Part 2: Hydrochloric Acid + Magnesium The strategy for these calculations are similar to those in Part 1. In Part 2, magnesium reagent. Calculations Sheet Thermochemistry 2 II. In Part 2, magnesium is the limiting Volume of hydrochloric acid solution Density of hydrochloric acid solution 75.0 mL Mass of hydrochloric acid solution (d-m/V) Specific heat capacity of hydrochloric acid solution Change in temperature for...
7.) Given the following reaction: 2 Mg (s)+ O2 (g) 2 MgO (s) AH 1204 kJ/mol a.) Calculate the mass of magnesium oxide formed if a reaction gives off 395 kJ of heat. b.) Draw a potential energy diagram for the reaction. Be sure to label each axis, the reactants, products, enthalpy of reaction, and activation energy on your diagram.
help me solve 1-3
Input Data Reactant Mg MgO Mass (9) 2300 104 Volume (mL) 100.0 1000 AT (C) 10.4 9.6 Calculated Enthalpies of Reaction Mg(s) + 2 HCl(aq) --> MgCl, (aq) + H29) AH = -459.83 kJ/mol MgO(s) + 2 HCl(aq) -> MgCl2(aq) + H20(0) AH = -155.66 kJ/mol Mg(s) + 4029) -> Mg(s) AH = -589.99 kJ/mol Problem: Solve for the following enthalpy changes 1) When 6.07 g NaOH(s) is reacted with 200.0 mL 0.759 M HCl(aq), the...
help help help pls!
17. The value of AH° for the reaction below is -790 kJ/mol. What is the enthalpy change accompanying when 0.95 g of S is completely reacted? 2S (s)302 (g) -2SO3 (g) 18. What is the enthalpy of the following reaction: 4 HCI(g) + O2(g) Given the following thermochemical equations: H2(g)+Cla(g)-2 HCI(g) 2 H2(s)O2(g)- 2 H20(g) 2 Cl2 +2 H2O (g)? AH -185 kJ AH-483.7 kJ
A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s)—Mg(NO3),(s) + H2(9) AH=-443. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ 443 kJ x 6 Mg(NO3),(s) + H2(g) → 2HNO3(1) + Mg(s) HN05(69) + Mg(s) – į Mg(NOx),() + <H() 4Mg(NO3),(s) + 4H, (8) — 8HN0g() + 4Mg(s) [kJ OkJ
A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s) Mg(NO3),(s) + H2(9) AH--443. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction W HN0,0) + Mg(6) – Mg(NO),(m) + H,@) 4Mg(NO), 6) + 4H, 6) - BHNO, () + 4Mg() Mg(NO),6) + H, (B) — 2HNO, (1) + Mg(6)
A chemist measures the enthalpy change AH during the following reaction: 2 HNO3(1) + Mg(s) Mg(NO3),(s) + H2(9) AH=-443. kJ Use this information to complete the table below. Round each of your answers to the nearest kJ/mol. reaction ΔΗ 4HN03(1) + 2Mg () — 2Mg(NO3),(5) + 2H, (6) Mg(NO3), (5) + H, (8) — 24NO3 (1) + Mg () xs ? kJ 3Mg(NO3), (s) + 3H, (8) — 6HNO3(1) + 3Mg(s)
Calculate the enthalpy change when 1 kg ice melts. AHfusion = 6.009 kJ/mol 18. a. 111 kJ/mol b. 223 kJ/mol c. 334 kJ/mol d. 445 kJ/mol Assume that a gummy bear consists 100% of glucose, CeH12O6 (MW- 180 g/mol). A gummy bear 20. weighs 228 mg. What is the heat of reaction for the total combustion of one gummy bear in a reaction with molten potassium chlorate, KCIO,? 4 KclOs(s)+CaH12O6(s) = 4 KCI (s) + 6 CO2(g) + 6 H2O(g);...
4 Fe(s) + 3 O2(g) → 2 Fe2O3(s) AH = -1652 kJ (a) How much heat is released when 3.54 mol iron are reacted with excess O2? Ok] (b) How much heat is released when 1.48 mol Fe2O3 is produced? CJ) (c) How much heat is released when 2.50 g iron are reacted with excess O2? DJ (d) How much heat is released when 12.6 g Fe and 1.02 g O2 are reacted? CkJ
What is the mole of magnesium, ?️H per mol of MgO, ?️H
per 1 mole Mg?
Part 2: Hydrochloric Acid + Magnesium The strategy for these calculations are similar to those in Part 1. In Part 2, magnesium reagent. Calculations Sheet Thermochemistry 2 II. In Part 2, magnesium is the limiting Volume of hydrochloric acid solution Density of hydrochloric acid solution 75.0 mL Mass of hydrochloric acid solution (d-m/V) Specific heat capacity of hydrochloric acid solution Change in temperature for...
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