How many (a) calories and (b) joules are needed to heat 58.3g water from 5.55degreeC to steam at 120degreeC
How many (a) calories and (b) joules are needed to heat 58.3g water from 5.55degreeC to...
a) how many joules are needed to heat up 325 grams of water from 25.1 degrees c to 43.8 degrees c? how many calories? b) how many joules are needed to heat up 325 grams of aluminum from 25.1 degrees c to 89.5 degrees c? how many calories? the c for aluminum is = 0.897 j/g degrees c
How many calories are needed to convert 125 grams of water at 75.0 C to steam at 100.0 C? [Specific heats: ice = 0.495, water = 1.00 steam = 0.478 cal/g C] [water's heat of fusion = 80.0 cal/gram, water's heat of vaporization - 540.0 cal/gram] 3125 cal 3330 cal 6875 cal 13,125 cal 70,625 cal
Review Problem 6.053 How much heat, in joules and in calories, must be removed from 1.28 mol of water to lower its temperature from 38.3 to 24.3°C? Include the sign in your answer. joules calories Click if you would like to Show Work for this question Open Show Work
4. Determine how many calories of heat are needed to raise the temperature of 250. mL of water from 25°C to 45°C. Specific heat (C) of H2O is 1.00 calorie/g°C. q=C x mass x At. 4 SC -29 250
Use the heat equation to calculate the energy , in joules and calories, for each of the following: a. tho heat 25.0g of water from 12.5°C to 25.7°C
A. Calculate the heat change in calories for vaporization of 25.0 g of water at 100 ∘C. Express your answer as a positive value using three significant figures and include the appropriate units. B. Calculate the heat change in joules for vaporization of 7.00 g of water at 100 ∘C. Express your answer as a positive value using three significant figures and include the appropriate units. C. Calculate the heat change in kilocalories for condensation of 6.5 kg of steam...
How many calories needed to to boil 1250 g of water at 100°C
How many grams of copper can be cooled from 66.8 to 20.3 °C by the heat gained by 100.0 g of water that has an increase in temperature from 24.7 to 33.6 °C? Answer in joules and in calories
16. A 100 gm sample of steam starts at 100°C. How much heat in joules is lost condensing the steam into hot water? (a) 2.0x106 joules (b) 2.0x104 joules (c) 2.26-10, joules (d) 2.26-107 joules (e) 2.26지0, joules 17. A 100 gm sample of hot water starts at 100°C, & then loses 21,851 joules of heat. What is the final temper of the hot water? (a) 60.7°C (b) 52.2°C (c) 47.8°C (d) 95.2°C (e) 59.9°C
How many joules of heat energy are required to completely boil away 168.2 g of water starting at room temperature (25°C)?