Physics

Physics, 06.08.2019 04:10, tdahna0403

Water's heat of fusion is 80. cal/g , and its specific heat is 1.0calg⋅∘c . some velomobile seats have been designed to hold ice packs inside their cushions. if you started a ride with ice packs that held 1900 g of frozen water at 0 ∘c , and the temperature of the water at the end of the ride was 32 ∘c , how many calories of heat energy were absorbed?

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Chemistry, 01.07.2019 20:00, tlecuyer

Water's heat of fusion is 80. cal/g , its specific heat is 1.0calg⋅∘c, and its heat of vaporization is 540 cal/g . a canister is filled with 320 g of ice and 100. g of liquid water, both at 0 ∘c . the canister is placed in an oven until all the h2o has boiled off and the canister is empty. how much energy in calories was absorbed?

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Physics, 22.07.2019 11:30, mm016281

How much energy is required to change a 40 g ice cube from ice at −14◦c to steam at 118◦c? the specific heat of ice is 2090 j/kg · ◦ c, the specific heat of water is 4186 j/kg · ◦ c, the specific heat of stream is 2010 j/kg · ◦ c, the heat of fusion is 3.33 × 105 j/kg, and the heat of vaporization is 2.26 × 106 j/kg. answer in units of j?

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Chemistry, 02.09.2019 18:20, realmofgrads23

Water's heat of fusion is 80. cal/g , and its specific heat is 1.0 cal g ⋅ ∘ c . some velomobile seats have been designed to hold ice packs inside their cushions. if you started a ride with ice packs that held 1100 g of frozen water at 0 ∘ c , and the temperature of the water at the end of the ride was 32 ∘ c , how many calories of heat energy were absorbed? express your answer to two significant figures and include the appropriate units.

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Chemistry, 26.10.2019 20:43, jholbrook7643

20 points for 2 chemistry questions! 1.) consider the specific heats. h2o(s) = 2.09 j/g · ◦c h2o (ℓ) = 4.18 j/g · ◦c h2o(g) = 2.03 j/g · ◦c. the heat of fusion for water is 334 j/g and its heat of vaporization is 2260 j/g. calculate the amount of heat required to convert 90 g of ice at −15◦c completely to liquid water at 56◦c. answer in units of kj. 2.) how much energy is required to turn 12 g ice at 227 k into steam at 382 k? specific heat of ice = 2.077 j/g·k specific heat of water (ℓ) = 4.180 j/g·k specific heat of steam = 2.042 j/g·k h2o heat of fusion = 6.00 kj/mol h2o heat of vaporization = 40.6 kj/mol answer in units of j.

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