Chemistry, 13.12.2019 19:31, kdenormandie3122
Dry ice is solid carbon dioxide. instead of melting, solid carbon dioxide sublimes according to the following equation: co2(s)→co2(g). when dry ice is added to warm water, heat from the water causes the dry ice to sublime more quickly. the evaporating carbon dioxide produces a dense fog often used to create special effects. in a simple dry ice fog machine, dry ice is added to warm water in a styrofoam cooler. the dry ice produces fog until it evaporates away, or until the water gets too cold to sublime the dry ice quickly enough. suppose that a small styrofoam cooler holds 15.0 liters of water heated to 83 ∘c.
use standard enthalpies of formation to calculate the change in enthalpy for dry ice sublimation. (the ? h? f for co2(s) is - 427.4kj/mol).
express your answer using three significant figure
? h? rxn = 33.9
kj (correct answerr)
calculate the mass of dry ice that should be added to the water so that the dry ice completely sublimes away when the water reaches 28 ? c. assume no heat loss to the surroundings. in two sig figss
mass of dry g
Answers: 3
Chemistry, 22.06.2019 13:50, kelonmazon2492
Read the chemical equation. 2c2h2 + 5o2 → 4co2 + 2h2o which of the following statements would be correct if one mole of c2h2 was used in this reaction? one mole of oxygen was used in this reaction. five moles of oxygen were used in this reaction. four moles of carbon dioxide were produced from this reaction. two moles of carbon dioxide were produced from this reaction.
Answers: 3
Chemistry, 22.06.2019 16:30, ccispoppin12
Asample of freon gas has a volume of 2.23 liters, a pressure of 4.85 kpa, and a temperature of -1.36°c. calculate the volume at a pressure of 1.38 kpa and a temperature of 5.5°c. (show work)
Answers: 1
Dry ice is solid carbon dioxide. instead of melting, solid carbon dioxide sublimes according to the...
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