Chemistry

Chemistry, 06.11.2019 10:31, sese47

Which pack has the greatest change in enthalpy, warm packs (such as hand warmers) or cold packs (such as an ice pack)?

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Mathematics, 03.07.2019 22:30, devaughnnorthcu1565

An office supply company orders packs of pens for two of its stores. for the first store, the order is for 60 packs of ballpoint pens and 25 packs of gel pens, for a total of $355. for the second store, the order is for 120 packs of ballpoint pens and 30 packs of gel pens, for a total of $570. create and solve a system of equations to determine the cost of one pack of ballpoint pens and one pack of gel pens. a. the cost of one pack of ballpoint pens is $3 and the cost of one pack of gel pens is $7. b. the cost of one pack of ballpoint pens is $7 and the cost of one pack of gel pens is $3. c. the cost of one pack of ballpoint pens is $3 and the cost of one pack of gel pens is $4. d. the cost of one pack of ballpoint pens is $4 and the cost of one pack of gel pens is $3.

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Mathematics, 25.09.2019 06:30, samsavage4073

Buzz is buying 143 sodas for his pool party.they sold in packs of 12 and 35. pack of 35 is $12.58 and pack of 12 is $7.19.how many packs of 35 should she buy and how many pcks of 12 she buy so she spend least amount of moneu?

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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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