• For the formation of ammonia, the equilibrium constant is known to be 5.2 × 10−5 at 25◦C.?

After analysis, it is determined that [N2] = 3.3 M and [H2] = 0.8 M, both at equilibrium. How many grams of ammonia are in the 10 L reaction vessel at equilibium? Use the equilibrium equation N2(g) + 3 H2(g) ⇀↽ 2 NH3(g) Answer in units of g.
After analysis, it is determined that [N2] = 3.3 M and [H2] = 0.8 M, both at equilibrium. How many grams of ammonia are in the 10 L reaction vessel at equilibium? Use the equilibrium equation N2(g) + 3 H2(g) ⇀↽ 2 NH3(g) Answer in units of g.
1 answer · Chemistry · 5 months ago
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The combustion reaction for benzoic acid C6H5CO2H(s) + 15/2O2(g) →7 CO2(g) + 3 H2O(ℓ) has ∆H^0 = −771.2 kcal/mole. Use Hess’s Law to calculate ∆Hf^0 for benzoic acid. Answer in units of kcal/mol
The combustion reaction for benzoic acid C6H5CO2H(s) + 15/2O2(g) →7 CO2(g) + 3 H2O(ℓ) has ∆H^0 = −771.2 kcal/mole. Use Hess’s Law to calculate ∆Hf^0 for benzoic acid. Answer in units of kcal/mol
Chemistry · 6 months ago
• Below is a thermochemical equation showing the formation of CO2 (g), including the change in enthalpy.?

Calculate the quantity of energy released in the reaction of 25.4 grams of carbon. C (s) + O2 (g) → CO2 (g) ΔH = -393.5 kJ/mol CO2 (g) Answer in units of kilojoules showing 3 sig. figs.
Calculate the quantity of energy released in the reaction of 25.4 grams of carbon. C (s) + O2 (g) → CO2 (g) ΔH = -393.5 kJ/mol CO2 (g) Answer in units of kilojoules showing 3 sig. figs.
1 answer · Chemistry · 6 months ago

Given that the specific heat capacities of ice and steam are 2.06 J/g · ◦C and 2.03 J/g· ◦C, respectively, calculate the total quantity of heat necessary to melt 23.5 g of ice at −50.0 ◦C and heat it to steam at 200◦C. The molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively. Assume water freezes at 0◦C and... show more
Given that the specific heat capacities of ice and steam are 2.06 J/g · ◦C and 2.03 J/g· ◦C, respectively, calculate the total quantity of heat necessary to melt 23.5 g of ice at −50.0 ◦C and heat it to steam at 200◦C. The molar heats of fusion and vaporization for water are 6.02 kJ/mol and 40.6 kJ/mol, respectively. Assume water freezes at 0◦C and boils at 100◦C. Answer in units of J.
1 answer · Chemistry · 6 months ago
• How much heat is required to heat 26 g of solid silver from 85◦C to liquid silver at 961◦C?

1 answer · Chemistry · 6 months ago
• Find the mass of liquid water required to absorb 4.37×104 kJ of heat energy on boiling.?

3 answers · Chemistry · 6 months ago
• How many calories of energy are required to warm 14.6 grams of water from 7 celsius to 65 celsius? The specific heat of water is 1 cal/g·°C.?

1 answer · Chemistry · 7 months ago
• Chem help?

A 50.0 g solid object at 100 °C is placed in 100 g water at 10 °C and allowed to reach thermal equilibrium in an insulated environment. If the thermal equilibrium temperature is 16°C, what is the specific heat of the solid object? Answer in units of J/g•°C showing 3 sig. figs.
A 50.0 g solid object at 100 °C is placed in 100 g water at 10 °C and allowed to reach thermal equilibrium in an insulated environment. If the thermal equilibrium temperature is 16°C, what is the specific heat of the solid object? Answer in units of J/g•°C showing 3 sig. figs.
1 answer · Chemistry · 7 months ago
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A 17 gram piece of copper at 162 °C is placed in 60 grams of water at 11 °C inside an insulated container and allowed to reach thermal equilibrium. If the specific heat of water is 4.18 J/g•ºC and that of copper is 0.387 J/g•ºC, determine the thermal equilibrium temperature of the mixture. Answer in units of °C showing 3 sig. figs.
A 17 gram piece of copper at 162 °C is placed in 60 grams of water at 11 °C inside an insulated container and allowed to reach thermal equilibrium. If the specific heat of water is 4.18 J/g•ºC and that of copper is 0.387 J/g•ºC, determine the thermal equilibrium temperature of the mixture. Answer in units of °C showing 3 sig. figs.
1 answer · Chemistry · 7 months ago
• 89 g of H2O at 95◦C is poured over 417 g Fe at 5◦C in an insulated vessel. What is the final temperature?

The specific heat of H2O is 4.184 J / g· ◦C, specific heat of Fe is 0.444 J / g· ◦C
The specific heat of H2O is 4.184 J / g· ◦C, specific heat of Fe is 0.444 J / g· ◦C
1 answer · Chemistry · 7 months ago
• If 25 grams of water absorbs 199 calories, how much will its temperature change?

2 answers · Physics · 7 months ago
• If 55 grams of water at 15 ºC absorbs 788 calories of energy, what would its final temperature be?

1 answer · Chemistry · 7 months ago
• If a sample of steel absorbs 4291 calories of energy and changes temperature from 60 ºC to 336 ºC, what is the mass of the steel?

3 answers · Chemistry · 7 months ago
• When potassium and sulfur react to produce an ionic compound, how many total electrons are transferred for each formula unit?

Chemistry · 7 months ago
• In the formation of the compound AlF3, each aluminum atom gains or loses how many electron(s).?

1 answer · Chemistry · 7 months ago
• When barium and chlorine react to produce an ionic compound, how many total electrons are transferred for each formula unit?

1 answer · Chemistry · 7 months ago
• How many times more energy is associated with a 381 nm ultraviolet photon than a 8942 nm microwave photon?

2 answers · Physics · 8 months ago