a. Calculate the amount of heat needed to warm 24.6 kg of water from a room temperature of 20.0°C to 60.0°C for use in a dishwasher. b. If the water heater has an efficiency of 61%, how much...

a. Calculate the amount of heat needed to warm 24.6 kg of water from a room temperature of 20.0°C to 60.0°C for use in a dishwasher. b. If the water heater has an efficiency of 61%, how much...

You place a very hot piece of aluminum (T=120 degrees C, c=900 J/(kg*degrees C) into a 500ml beaker of water that is already at an initial temperature of 90.0 degrees C. The mass of this piece of...

4 grams CaCl2 is dissolved in 40 grams of water at 1 degree C. Find the final temperature of the water.

C2H6 + O2→CO2 + H2O. The heat from this reaction vaporized 20 grams of water. What mass of C2H6 was burned?

1.20 grams of Mg is burned producing MgO. The heat from the reaction is used to warm 500 grams water at 5 degrees Celsius. Find the final temperature of the water.

Write the heat of formation equation for: A) NaCl B) NaOH C) C2H6 D) NO2

Δ2HF + PbCl2→2HCl(g) + PbF2 ΔHf = +90KJ. Find the ΔHf of PbF2

Rivets can be cooled before they are put in place, thus when they reach equilibrium temperature they are more firmly fixed in place. If the volume expansion of iron is 35.0 X 10-6...

If a 0.06247 kg ice cube initially at 0.00 C is allowed to melt in a Styrofoam cup holding 0.497 kg of water at 10.0 C , what is the total entropy change for this process?

Calorimetry a. How much heat needs to be taken from 0.5 kg of ethyl alcohol as a gas at its boiling point of 78.0 C to a solid at its freezing point -114 C if the latent heat of vaporization...

If you want to find the latent heat of fusion, you take a cup with 0.755 kg of water at 30.00 C and drop 0.0850 kg of ice initially at 0.000 C and it all reaches an equilibrium temperature of...

I'm reviewing some practice thermodynamics questions for my upcoming physics exam but I can't figure out how to set these up properly. 1. If you mix two parts hot 80° C water with one...

Calorimetry a. How much heat needs to be taken from 0.5 kg of ethyl alcohol as a gas at its boiling point of 78.0 C to a solid at its freezing point -114 C if the latent heat of vaporization...

Calorimetry a. How much heat needs to be taken from 0.5 kg of ethyl alcohol as a gas at its boiling point of 78.0 C to a solid at its freezing point -114 C if the latent heat of vaporization...

Does metal conduct heat quickly true or false

This is one of the questions on my review guide my teacher gave me and I have a test tomorrow and have no idea how to find the answer to this question! If someone could give the formula to find mass...

Find the final temperature go the H20(l) sample.

There are 12 cans of pop in cooler, each can weighs .35kg, and the specific heat for pop is 3800. The temperature in the cooler is 5C. Someone places a water mellon in the cooler that has a...

I'm stuck on this one How many grams of methane must be combusted to heat 1.00 kg of water from 25.0 °C to 90 °C, assuming H2O(l) is the product of the reaction and no heat...

I'm not sure what I need to do here... If 25.0 g of ethanol at 5.0 °C is mixed with 50.0g of ethanol at 75.0 °C, what with the final temperature of ethanol be, assuming no...