What quantity of heat is involved in changing

Assignment Help Chemistry

Reference no: EM13162833

Water, H2O- heat capacity of a solid 0.49 cal/g °C, heat of fusion 80.0 cal/g
Heat capacity of liquid 1.00 cal/g° C, heat of vaporization 540 cal/g
Heat capacity of gas 0.48 cal/g° C

1. How much heat is needed to warm 45.6 grams water from 23.0° C to 40.0 °C?
2. What quantity of heat is involved in changing 23.6 grams of ice at -34.0 °C to ice at 0 °C?
3. How much heat is removed to convert 532 grams of water at 0 °C to ice at 0 °C?
4. How much heat is released when 57.8 grams steam at 109°C cools to water at 100°C?
5. How much heat is required to convert 905 grams of water at 21.0°C to steam at 121 °C?
6. How much heat is released when 361 grams of steam at 100°C cools to water at 45.6°C?
Aluminum constants- heat of fusion 10.659 J/mole, heat capacity of solid 24.3 J/mol°C, melting point 660.2°C.
7. How much heat is needed to warm 5.67 moles aluminum from 22.0 °C to 90 °C?
8. How much heat is needed to warm 7.00 moles aluminum from 27.0°C to liquid aluminum to its melting point?
9. You are going to use water to cool molten aluminum to the solid state. You have 15.9 grams of molten aluminum at its melting point. If it is cooled to the temperature of 16.0°C, what will the final temperature of the cooling water be if you use 256 grams of water initially at 22.0 °C to cool the aluminum?

Reference no: EM13162833

Questions Cloud

Avoid letting boredom-nonverbal communication : Nothing can put someone off faster than if they read from your nonverbals that you are bored. How do you avoid letting boredom (even if it's there and legitimate) show in your nonverbal communication?

What is the volume of the object including air : An object has a mass of 5.95g. Assuming the density of water is 1 g/mL, what is the volume of the object including air?

Which best describes a solid : Which best describes a solid?

What is the partial pressure of o2 in an oxygen : Patients suffering from respiratory disorders are often treated in oxygen tents in which the atmosphere is enriched in oxygen. What is the partial pressure of O2 in an oxygen tent consisting of 45% O2 for an atmospheric pressure of 753 mm Hg?

What quantity of heat is involved in changing : How much heat is needed to warm 45.6 grams water from 23.0° C to 40.0 °C?

In reaction no nadh or acetaldehyde was present initially : Formulas and constants to remember R = 1.98 cal/degree-mole ; Delta G0 = -RT lnKeq. T = 298 degrees K. How much NADH will be produced in the above reaction

Hospital managers are concerned : Hospital managers are concerned that some patients with medical emergencies wait too long in the casualty department before they are diagnosed and treated. During a meeting, two groups of proposals have appeared:

Demand for the product elastic or inelastic in the short run : The 2 products I am using are: Nestle Milk and Dove Soup.. Is demand for the product elastic or inelastic in the short run? In the long run? Is the firm's production capital-intensive or labor-intensive? How important is technology in the producing ..

Calculate the equilibrium constant kc : When she introduced 3.63E-2 moles of N2(g) and 6.18E-2 moles of H2(g) into a 1.00 Liter container, she found the equilibrium concentration of NH3(g) to be 9.68E-4 M.

User Account

All Pages