Chemistry

Chemistry, 13.07.2019 07:00, ijohnh14

Cold packs contain chemical that react to absorb heat. which substances is used in cold packs? a. calcium chlorideb. sodium carbonatec. magnesium sulphated. ammonium nitrate

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Chemistry, 09.07.2019 12:30, jaylennkatrina929

In a chemical cold pack, two substances are kept separate by a divider. when the divider is broken, the substances mix and absorb heat from the surroundings. the chemical cold pack feels cold.

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Chemistry, 06.10.2019 11:30, SAMANTHA1982

Cold packs are used to treat minor injuries. some cold packs contain nh4no3(s) and a small packet of water at room temperature before activation. to activate this type of cold pack, the small packet must be broken to mix the water and nh4no3(s). the temperature of this mixture decreases to approximately 2°c and remains at this temperature for 10 to 15 minutes. state the direction of heat flow that occurs when the activated cold pack is applied to the body. identify both types of bonds in the nh4no3(s).

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Chemistry, 29.10.2019 19:31, jordanwrighta1

Commercially available cold packs are simple in design: a pouch with water on one side, isolated by a barrier from a specific salt on the other side. when the barrier is broken, the salt and water mix and the solution turns cold. select which of the statements is true about the reaction occurring in cold packs. o the reaction between the salt and water is endothermic. o the reaction between the salt and water is exothermic. o the reaction between the salt and water is neither endothermic nor exothermic. the cold pack releases heat into the environment. #8

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Chemistry, 08.11.2019 03:31, Gattuso

Commercial cold packs and hot packs are available for treating athletic injuries. both types contain a pouch of water and a dry chemical. when the pack is struck, the pouch of water breaks, dissolving the chemical, and the solution becomes either hot or cold. many hot packs use calcium chloride, and many cold packs use ammonium nitrate. write reaction equations to show how these strong electrolytes break apart in water. (include states-of-matter under the given conditions in your answer. use the lowest possible whole number coefficients.)

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Cold packs contain chemical that react to absorb heat. which substances is used in cold packs? a. c...

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