Calculate the heat needed at 0oC to make each of the following changes of state. Indicate whether heat was absorbed or released. a. calories to freeze 35 g of water. b. calories to freeze 250 g of water. c. kilocalories to melt 140 g of ice.

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Q: a. Calculate the mass percent of sand in the mixture.

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Q: 1A C3H120 MW 88 28 36e Capi llary fi batueen salt plates ase HAVEMUNBERB Camriht 1e nee.e - Lact

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Q: Supple key information summary of the following: (answer can be short) Intermolecular Forces of att...

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Q: Metal has an atomic radius of 177.76 pm and a cell unit length of 503 pm. What is its unit cell arra...

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Q: If a 1.065 g sample of magnesium oxide of 84.736% were treated with 50 mL of 1.017 N sulfuric acid, ...

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Q: Identify as many peaks as possible. This is the IR Spectroscopy of an unknown liquid sample.

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Q: what reagents can you use to connect the cl to the double bond to make it all one product? CI 3D0

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Q: Calculate the volume (in L) of an equimolar gaseous mixture methane (1), propane (2) and n-pentane (...

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Q: 1. O3 2. (CH32S or Zn, HCI d. a. b. C. HO

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Q: A 1.740-g sample of coal contains 1.584 g C. Calculate the mass percentage of C in the coal. Mass pe...

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Q: CH3OH

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Q: Please provide a synthetic route for this molecule Br

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Q: At 150°C, Kp = 1.2x10- for the reaction 12(g) + Br2(g) 5 2Brl(g). A rigid cylinder at that temperatu...

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