The reaction below, carried out at 252.57 K and 1.00 bar, carried out at constant pressure...
The reaction below, carried out at 252.57 K and 1.00 bar, carried out at constant pressure was found to release 907 kJ of heat and consume 60.0 g of oxygen. Calculate the internal energy change associated with this reaction. 2H2(g) + O2(g) → 2H2O(g)
a. -911 kJ b. 911 kJ c. -907 kJ d. -903 kJ e. 907 kJ
Homework Answers
Add Answer to:
The reaction below, carried out at 252.57 K and 1.00 bar,
carried out at constant pressure...
The reaction below, carried out at 272.67 K and 1.00 bar, carried out at constant pressure...
The reaction below, carried out at 272.67 K and 1.00 bar, carried out at constant pressure was found to release 329 kJ of heat and consume 21.8 g of oxygen. Calculate the internal energy change associated with this reaction. 2H2(g) + O2(g) → 2H2O(g) a. 331 kJ b. 329 kJ c. -331 kJ d. -327 kJ e. -329 kJ
At what temperature will a 13.7 g Cl2 sample exert a pressure of 0.993 bar when...
At what temperature will a 13.7 g Cl2 sample exert a pressure of 0.993 bar when confined in a 7.50L container? It is found that 6.00 g of potassium metal reacts with excess water to release 29.8 kJ of heat. This means that, for the reaction: 2K(s) + 2H2O(l) à 2KOH(aq) + H2(g) What is the enthalpy of reaction per mole of potassium metal? 2. The overall reaction in a commercial heat pack can be represented as: 4Fe(s) + 3O2(g)...
1. Consider the following reaction carried out under constant pressure Fe203(s)+3cog) 3C02(g)+2Fe(s) A rn -2.7x10 kJ...
1. Consider the following reaction carried out under constant pressure Fe203(s)+3cog) 3C02(g)+2Fe(s) A rn -2.7x10 kJ Calculate the heat associated with the complete reaction of 3.75x102 g of Fe203 with 2.52x102 g of CO. O -2.5x101 kJ O -8.0x101 kJ O -2.4x102 kJ O -6.3x10 kJ -5.2x101 kJ
Answe all please! Consider the following reaction carried out under constant pressure 2HCl(aq) + Zn(s) -...
Answe all please!
Consider the following reaction carried out under constant pressure 2HCl(aq) + Zn(s) - H2(g) + ZnCl2(s) AHpx = -80.97 kJ Calculate the heat associated with the complete reaction of 24.3 g of HCl with 16.8 g of Zn. 0-54.0 kJ 0-10.8 kJ O-55.2 kJ -20.8 kJ O-27.0 kJ Determine AHrxn for the reaction CO2(g) + 2 H2O(9) CH4(9) + 2 O2(g) given the following average bond energies (values given parentheses) C-H (414 kJ/mol) O=O (498 kJ/mol) C=0...
Use the set of three reactions shown below to answer the questions that follow. 2NO(g) +...
Use the set of three reactions shown below to answer the questions that follow. 2NO(g) + O2(g) → 2NO2(g) ΔH = -116 kJ 2N2(g) + 5O2(g) + 2H2O(l) → 4HNO3(aq) ΔH = -256 kJ N2(g) + O2(g) → 2NO(g) ΔH = +183 kJ If 27.9 g of NO g is reacted with excess oxygen, how much heat energy is produced? What mass of liquid water will be consumed during the production of 33900 J of energy assuming that there is...
A chemical reaction was carried out at 25 °C (room temperature) and under constant pressure. At...
A chemical reaction was carried out at 25 °C (room temperature) and under constant pressure. At equilibrium, the change in free energy was measured as −3 kcal/mol, and the reaction released 5 kcal/mol of heat, as measured by calorimetry. Calculate the change in entropy that accompanied the reaction
Question 4 Not changed since last attempt Marked out of 1.00 Calculate w (in kJ) when 189 g iron (III) oxide (MM =...
Question 4 Not changed since last attempt Marked out of 1.00 Calculate w (in kJ) when 189 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 451 K: 2Fe2O3(s) + 3C(s) + 4Fe(s) + 3CO2(g) P Flag question Answer: Question 5 Not yet answered Calculate the work (in kJ) when 2.20 moles of methane react with excess oxygen at 470 K: Marked out of 1.00 CH4(g) + 20 (g) + CO2(g)...
Which expression describes the heat evolved in a chemical reaction when the reaction is carried out...
Which expression describes the heat evolved in a chemical reaction when the reaction is carried out at constant pressure? AE represents internal energy, which can also be symbolized as AU. The symbols w and q represent work and heat, respectively.
Calculate the heat of reaction at constant pressure for the reaction of carbon with hydrogen gas...
Calculate the heat of reaction at constant pressure for the reaction of carbon with hydrogen gas and oxygen gas that produces acetic acid, CH3COOH. The following values may prove helpful: CH3COOH(l) + 2O2 (g) → 2CO2 (g) + 2H2O(l) ∆H = -871kJ C(graphite) + O2 (g) → CO2 (g) ∆H = -394kJ H2 (g) + 1/2 O2 (g) → H2O (l) ∆H = -286kJ
For the reaction below, the constant pressure heat of reaction is qp-2451 k] mol at 25...
For the reaction below, the constant pressure heat of reaction is qp-2451 k] mol at 25 °C. What is the constant volume heat of reaction, qv, at 25 C? 12 CO(g) + 25 H2(g) → C 12H26(I) + 12 H2O(l) Enter your answer in kj mol-1, rounded to the nearest kilojoule. The constant volume heat of reaction is qNumber kJ mol-
1. Consider the following reaction carried out under constant pressure Fe203(s)+3cog) 3C02(g)+2Fe(s) A rn -2.7x10 kJ Calculate the heat associated with the complete reaction of 3.75x102 g of Fe203 with 2.52x102 g of CO. O -2.5x101 kJ O -8.0x101 kJ O -2.4x102 kJ O -6.3x10 kJ -5.2x101 kJ
Answe all please!
Consider the following reaction carried out under constant pressure 2HCl(aq) + Zn(s) - H2(g) + ZnCl2(s) AHpx = -80.97 kJ Calculate the heat associated with the complete reaction of 24.3 g of HCl with 16.8 g of Zn. 0-54.0 kJ 0-10.8 kJ O-55.2 kJ -20.8 kJ O-27.0 kJ Determine AHrxn for the reaction CO2(g) + 2 H2O(9) CH4(9) + 2 O2(g) given the following average bond energies (values given parentheses) C-H (414 kJ/mol) O=O (498 kJ/mol) C=0...
Question 4 Not changed since last attempt Marked out of 1.00 Calculate w (in kJ) when 189 g iron (III) oxide (MM = 159.7 g/mol) reacts with excess carbon to produce carbon dioxide gas at 451 K: 2Fe2O3(s) + 3C(s) + 4Fe(s) + 3CO2(g) P Flag question Answer: Question 5 Not yet answered Calculate the work (in kJ) when 2.20 moles of methane react with excess oxygen at 470 K: Marked out of 1.00 CH4(g) + 20 (g) + CO2(g)...
Which expression describes the heat evolved in a chemical reaction when the reaction is carried out at constant pressure? AE represents internal energy, which can also be symbolized as AU. The symbols w and q represent work and heat, respectively.
For the reaction below, the constant pressure heat of reaction is qp-2451 k] mol at 25 °C. What is the constant volume heat of reaction, qv, at 25 C? 12 CO(g) + 25 H2(g) → C 12H26(I) + 12 H2O(l) Enter your answer in kj mol-1, rounded to the nearest kilojoule. The constant volume heat of reaction is qNumber kJ mol-
Most questions answered within 3 hours.
-
The cheetah is one of the fastest accelerating animals, for it
can go from rest to...
asked 42 minutes ago -
CaCO3 (s) ⇌ CaO (s) + CO2 (g)
At 637 °C, the reaction reaches equilibrium.
If...
asked 1 hour ago -
The condensate from a steam distillation contains 12.0 g of
compound A and 18.0 g of...
asked 4 hours ago -
A major economic benefit of fixed exchange rates compared to
floating rates is that
a. the...
asked 4 hours ago -
1) For this reaction,
SiCl4 (l)+ 2H2O(g) <->
SiO2 (s) + 4HCl (g) DeltaH = -127 KJ...
asked 4 hours ago -
Which of the following does NOT add to US GDP? A. Saudi Arabia
buys fighter jets...
asked 6 hours ago -
2. Describe market equilibrium in terms of the following
characteristics
d.
How supply and demand interactions...
asked 6 hours ago -
1a. Create a class named Computer
- Separate declaration from implementation (i.e. Header and CPP
files)...
asked 6 hours ago -
A medical researcher
believes that a drug changes the body's temperature. Seven test
subjects are randomly...
asked 6 hours ago -
A call option on Project Cash Flow Consulting Inc.'s stock (PCF)
has a market price of...
asked 6 hours ago -
A study on the latest fad diet claimed that the amounts of
weight lost by all...
asked 7 hours ago -
give examples of how gene expression is inherited to the next
generation?
asked 6 hours ago