Chemistry, 15.07.2020 04:01 haybaby312oxdjli
(Question 6 Essay Worth points) (07.05 HC) In an experiment, calcium carbonate reacted with different volumes of hydrochloric acid in water. One of the products formed during the experiment was carbon dioxide The time taken for 0.89 of carbon dioxide to form was recorded. A partial record of the experiment is shown. Flask Experimental Record Mass of Volume of Volume of Calcium Carbonate HCI Water Time: 4.09, 25, 11.2 seconds, 4.0, 20, 5 ml, 4.09, 15, 10 mL, 4.0, 10, 15. Why does the volume increase?
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Chemistry, 21.06.2019 14:20
Calculate the enthalpy of the following reaction: 4 b (s) + 3 o2 (g) → 2 b2o3 (s) given the following pertinent information: (a) b2o3 (s) + 3 h2o (g) → 3 o2 (g) + b2h6 (g), δhoa = +2035 kj (b) 2 b (s) + 3 h2 (g) → b2h6 (g), δhob = +36 kj (c) h2 (g) + latex: \frac{1}{2} 1 2 o2 (g) → h2o (l), δhoc = −285 kj (d) h2o (l) → h2o (g), δhod = +44 kj
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Chemistry, 21.06.2019 19:00
Does the temperature affect the solubility of sugar and salt in water? if it does tell me like different temperatures with different solubilities so i can sketch down a graph
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Chemistry, 22.06.2019 10:00
Water's surface tension and heat storage capacity are accounted for by its a) orbitals b) weight c) hydrogen bonds d) mass e) size
Answers: 2
Chemistry, 22.06.2019 16:00
Inside a flashbulb, oxygen surrounds a thin coil of magnesium. when the flashbulb is set off, a chemical reaction takes place in which magnesium combines with oxygen to form magnesium oxide. which of the chemical equations matches the reaction above? a. mg + o2 mgo2 + energy b. 2mg + o mg2o + energy c. 2mg + o2 2mgo + energy d. mg + o mgo + energy
Answers: 1
(Question 6 Essay Worth points) (07.05 HC) In an experiment, calcium carbonate reacted with differen...
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