J.R. S.

A 5.10-g chunk of potassium is dropped into 1.10 kg water at 24.5°C. What is the final temperature of the water after the preceding reaction occurs? Assume that all the heat is used to raise the... more

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Chemistry

10/17/20

How many moles of gas are in a volume of 43.5 L at STP? Please show work

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Chemistry

10/17/20

predict the products & write the balanced equation including physical states, if no reaction give reasons why *classify the reaction type.?

19. Solutions of magnesium acetate and ammonium sulfide are mixed. 20. Aqueous barium hydroxide is added to phosphoric acid. 21. Aluminum metal is added to aqueous copper(II) sulfate. 22. Zinc... more

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Chemistry

10/17/20

predict the products & write the balanced equation including physical states, if no reaction give reasons why classify the reaction type.?

12. Barium metal is added to water. 13. Silver metal is added to perchloric acid. 14. Liquid benzyl alcohol (C7H8O) burns. 15. A solution of magnesium sulfite is added to perchloric acid.

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Science Chemistry Biochemistry

10/17/20

Percent Yield of Carbon Dioxide?

Liquid octane CH3CH26CH3 reacts with gaseous oxygen gas O2 to produce gaseous carbon dioxide CO2and gaseous water H2O. If 46.1g of carbon dioxide is produced from the reaction of 63.97g of octane... more

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Chemistry

10/17/20

Hydrofluoric acid, HF, has a Ka of 6.8 × 10−4. What are [H3O+], [F−], and [OH−] in 0.820 M HF?

Hydrofluoric acid, HF, has a Ka of 6.8 × 10−4. What are [H3O+], [F−], and [OH−] in 0.820 M HF?please help me fill in the blanks [H3O+] = ____ M[F−] = ____ M[OH−] = ____ x 10^ __ M. (Enter your... more

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Science Chemistry Biochemistry

10/17/20

percent yield of water

Aqueous hydrochloric acid HCl reacts with solid sodium hydroxide NaOH to produce aqueous sodium chloride NaCl and liquid water H2O. If 0.321g of water is produced from the reaction of 2.9g of... more

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Chemistry Electrochemistrry

10/17/20

non standard cell potential

Calculate the non-standard cell potential (in V) for the following reaction at 839.55 ℃ with the following concentrations: [Mg+2] = 9.00×10−2 M; [Cu+2] = 1.60×10−5 M Cu+2(aq) + Mg(s) --> Cu(s)... more

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Chemistry

10/17/20

Consider these reactions, where M represents a generic metal. Δ𝐻= ???KJ

2M(s)+6HCl(aq)⟶2MCl3(aq)+3H2(g)Δ𝐻1=−575.0 kJHCl(g)⟶HCl(aq) Δ𝐻2=−74.8 kJH2(g)+Cl2(g)⟶2HCl(g) Δ𝐻3=−1845.0 kJMCl3(s)⟶MCl3(aq) Δ𝐻4=−222.0 kJUse the given information to determine the enthalpy of... more

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Chemistry

10/17/20

The combustion of 2.173 g of propanol (C3H7OH) increases the temperature bomb calorimeter from 298.00 K to 302.74 K.The heat capacity of the bomb calorimeter is 15.39 kJ/K

. Determine Δ𝐻 for the combustion of propanol to carbon dioxide gas and liquid water.

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Chemistry

10/17/20

A silver cube with an edge length of 2.25 cm and a gold cube with an edge length of 2.63 cm are both heated to 81.6∘C and placed in 119.0 mL of water at 20.3 ∘C.

substance Specific heat (J/g·°C)Density (g/cm3) density g/cm^3) gold 0.1256 19.3 silver 0.2386 10.5 water 4.184 1.00 What is the final temperature of the water when thermal equilibrium... more

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Chemistry

10/17/20

combustionof 1.943g of glucose,C6H12O6(s),in Bomb calorimeter with a heat capacity of 4.10kJ/°C results in an increase in the temperature of the calorimeter and its contents from 23.00 °C to 30.39°C.

What is the internal energy change, Δ𝑈 , for the combustion of 1.943 g of glucose? Calculate the enthalpy of combustion, Δ𝐻c, of glucose in kilojoules per mole.

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Chemistry

10/17/20

Given that H2(g)+F2(g)⟶2HF(g)Δ𝐻∘rxn=−546.6 kJ 2H2(g)+O2(g)⟶2H2O(l)Δ𝐻∘rxn=−571.6 kJ calculate the value of Δ𝐻∘rxn for 2F2(g)+2H2O(l)⟶4HF(g)+O2(g)

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Chemistry

10/17/20

Given the reactions, X(s)+12O2(g)⟶XO(s) Δ𝐻=−829.1 kJ XCO3(s)⟶XO(s)+CO2(g)Δ𝐻=+185.9 kJ what is Δ𝐻 for this reaction? X(s)+12O2(g)+CO2(g)⟶XCO3(s)

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Chemistry

10/17/20

A 3.985 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of the calorimeter and its contents increase from 24.17 ∘C to 30.90 ∘C.

The heat capacity (calorimeter constant) of the calorimeter is 43.07 kJ/ ∘C, what is the heat of combustion per gram of the material?

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Chemistry

10/17/20

When a 4.00 g sample of KSCN is dissolved in water in a calorimeter W/ total heat capacity of 2.85 kJ⋅K−1, the temperature decreases by 0.350 K. Calculate the molar heat of solution of KSCN.

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Chemistry

10/17/20

Hot107.8 g unknown substance initially at 181.9°C is placed in 35.0 mL of water initially at 25.0°C and the system is allowed to reach thermal equilibrium.final temperature of the system is 78.8°C.

Find the specific heat (j/gxc)

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Chemistry

10/17/20

At constant pressure, which of these systems do work on the surroundings? 2A(g)+2B(g)⟶3C(g) , A(g)+B(g)⟶3C(g) , A(s)+B(s)⟶C(g), 2A(g)+3B(g)⟶4C(g)

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Chemistry

10/17/20

An unknown substance has a mass of 17.5 g. The temperature of the substance increases by 19.1 ∘C when 78.5 J of heat is added to the substance. What is the most likely identity of the substance?

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Science Chemistry Biochemistry

10/17/20

What is the enthalpy change for this reaction?

When 50 mL of 1.00 M was added to 50 mL of 1.00 M NaOH in a coffee-cup calorimeter, the temperature of the resulting solution increased by 4.5 . The enthalpy change for the neutralization isa.... more

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Science Chemistry Biochemistry

10/17/20

Find the DeltaH?

What is ΔHneut when 50.0 mL of 1.0 M HCl react with 40.0 mL of 1.0 M NaOH to produce a temperature change of +5.6 ? [math] d{soln} = 1.05 g/mL, c{sol} = 4.20 J/g. K

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Chemistry

10/16/20

(a) predict the products and write the balanced equation including physical states, if no reaction occurs give reasons why (b) classify the type of reaction

16. Chromium metal is added to a solution aluminum sulfate. 17. Solid sodium carbonate is added to sulfuric acid. 18. Aqueous calcium hydroxide is added to perbromic acid.

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Given the thermochemical equations

What is the heat of combustion of ethane, C2H6, in kilojoules per mole of ethane? Enthalpy of formation values can be found in this list of thermodynamic properties.

which is greater 45Kg or 450000 g?

I need to figure this out before my exam

How many moles of gas are in a volume of 43.5 L at STP? Please show work

predict the products & write the balanced equation including physical states, if no reaction give reasons why *classify the reaction type.?

predict the products & write the balanced equation including physical states, if no reaction give reasons why classify the reaction type.?

Percent Yield of Carbon Dioxide?

Hydrofluoric acid, HF, has a Ka of 6.8 × 10−4. What are [H3O+], [F−], and [OH−] in 0.820 M HF?

percent yield of water

non standard cell potential

Consider these reactions, where M represents a generic metal. Δ𝐻= ???KJ

The combustion of 2.173 g of propanol (C3H7OH) increases the temperature bomb calorimeter from 298.00 K to 302.74 K.The heat capacity of the bomb calorimeter is 15.39 kJ/K

A silver cube with an edge length of 2.25 cm and a gold cube with an edge length of 2.63 cm are both heated to 81.6∘C and placed in 119.0 mL of water at 20.3 ∘C.

combustionof 1.943g of glucose,C6H12O6(s),in Bomb calorimeter with a heat capacity of 4.10kJ/°C results in an increase in the temperature of the calorimeter and its contents from 23.00 °C to 30.39°C.

Given that H2(g)+F2(g)⟶2HF(g)Δ𝐻∘rxn=−546.6 kJ 2H2(g)+O2(g)⟶2H2O(l)Δ𝐻∘rxn=−571.6 kJ calculate the value of Δ𝐻∘rxn for 2F2(g)+2H2O(l)⟶4HF(g)+O2(g)

Given the reactions, X(s)+12O2(g)⟶XO(s) Δ𝐻=−829.1 kJ XCO3(s)⟶XO(s)+CO2(g)Δ𝐻=+185.9 kJ what is Δ𝐻 for this reaction? X(s)+12O2(g)+CO2(g)⟶XCO3(s)

A 3.985 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of the calorimeter and its contents increase from 24.17 ∘C to 30.90 ∘C.

When a 4.00 g sample of KSCN is dissolved in water in a calorimeter W/ total heat capacity of 2.85 kJ⋅K−1, the temperature decreases by 0.350 K. Calculate the molar heat of solution of KSCN.

Hot107.8 g unknown substance initially at 181.9°C is placed in 35.0 mL of water initially at 25.0°C and the system is allowed to reach thermal equilibrium.final temperature of the system is 78.8°C.

At constant pressure, which of these systems do work on the surroundings? 2A(g)+2B(g)⟶3C(g) , A(g)+B(g)⟶3C(g) , A(s)+B(s)⟶C(g), 2A(g)+3B(g)⟶4C(g)

An unknown substance has a mass of 17.5 g. The temperature of the substance increases by 19.1 ∘C when 78.5 J of heat is added to the substance. What is the most likely identity of the substance?

What is the enthalpy change for this reaction?

Find the DeltaH?

(a) predict the products and write the balanced equation including physical states, if no reaction occurs give reasons why (b) classify the type of reaction

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J.R. S.

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Emmersion

Given the thermochemical equations

What is the heat of combustion of ethane, C2H6, in kilojoules per mole of ethane? Enthalpy of formation values can be found in this list of thermodynamic properties.

which is greater 45Kg or 450000 g?

I need to figure this out before my exam

How many moles of gas are in a volume of 43.5 L at STP? Please show work

predict the products & write the balanced equation including physical states, if no reaction give reasons why *classify the reaction type.?

*predict the products & write the balanced equation including physical states, if no reaction give reasons why *classify the reaction type.?

Percent Yield of Carbon Dioxide?

Hydrofluoric acid, HF, has a Ka of 6.8 × 10−4. What are [H3O+], [F−], and [OH−] in 0.820 M HF?

percent yield of water

non standard cell potential

Consider these reactions, where M represents a generic metal. Δ𝐻= ???KJ

The combustion of 2.173 g of propanol (C3H7OH) increases the temperature bomb calorimeter from 298.00 K to 302.74 K.The heat capacity of the bomb calorimeter is 15.39 kJ/K

A silver cube with an edge length of 2.25 cm and a gold cube with an edge length of 2.63 cm are both heated to 81.6∘C and placed in 119.0 mL of water at 20.3 ∘C.

combustionof 1.943g of glucose,C6H12O6(s),in Bomb calorimeter with a heat capacity of 4.10kJ/°C results in an increase in the temperature of the calorimeter and its contents from 23.00 °C to 30.39°C.

Given that H2(g)+F2(g)⟶2HF(g)Δ𝐻∘rxn=−546.6 kJ 2H2(g)+O2(g)⟶2H2O(l)Δ𝐻∘rxn=−571.6 kJ calculate the value of Δ𝐻∘rxn for 2F2(g)+2H2O(l)⟶4HF(g)+O2(g)

Given the reactions, X(s)+12O2(g)⟶XO(s) Δ𝐻=−829.1 kJ XCO3(s)⟶XO(s)+CO2(g)Δ𝐻=+185.9 kJ what is Δ𝐻 for this reaction? X(s)+12O2(g)+CO2(g)⟶XCO3(s)

A 3.985 g sample of a new organic material is combusted in a bomb calorimeter. The temperature of the calorimeter and its contents increase from 24.17 ∘C to 30.90 ∘C.

When a 4.00 g sample of KSCN is dissolved in water in a calorimeter W/ total heat capacity of 2.85 kJ⋅K−1, the temperature decreases by 0.350 K. Calculate the molar heat of solution of KSCN.

Hot107.8 g unknown substance initially at 181.9°C is placed in 35.0 mL of water initially at 25.0°C and the system is allowed to reach thermal equilibrium.final temperature of the system is 78.8°C.

At constant pressure, which of these systems do work on the surroundings? 2A(g)+2B(g)⟶3C(g) , A(g)+B(g)⟶3C(g) , A(s)+B(s)⟶C(g), 2A(g)+3B(g)⟶4C(g)

An unknown substance has a mass of 17.5 g. The temperature of the substance increases by 19.1 ∘C when 78.5 J of heat is added to the substance. What is the most likely identity of the substance?

What is the enthalpy change for this reaction?

Find the DeltaH?

(a) predict the products and write the balanced equation including physical states, if no reaction occurs give reasons why (b) classify the type of reaction

Still looking for help? Get the right answer, fast.

OR

J.R. S.

predict the products & write the balanced equation including physical states, if no reaction give reasons why classify the reaction type.?