Chemistry, 07.07.2019 15:30 aliceohern
Substance a and substance b were dissolved in two separate 100 ml beakers of water, which each started at a temperature of 25.1°c. the mixtures' temperatures were measured and recorded as shown in the table below. substance initial temp. final temp. a 25.1°c 30.2°c b 25.1°c 20.0°c which statement is a correct interpretation of the data? a. the dissolving of substance a released heat and the dissolving of substance b absorbed heat. b. the dissolving of substance b released heat and the dissolving of substances a absorbed heat. c. only the dissolving of substance a absorbed heat. d. only the dissolving of substance b released heat.
Answers: 1
Chemistry, 21.06.2019 15:30
Anurse practitioner prepares an injection of promethazine, an antihistamine used to treat allergic rhinitis. if the stock bottle is labeled 25 mg/ml and the order is a dose of 11.0 mg , how many milliliters will the nurse draw up in the syringe?
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Chemistry, 22.06.2019 03:00
In the 1800s, one of the statements in john dalton's atomic theory was that atoms are indivisible. later experimental evidence led to the discovery of subatomic particles such as neutrons, electrons, and protons. what happened to the indivisible atom part of dalton's atomic theory, and why?
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Chemistry, 22.06.2019 13:30
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Substance a and substance b were dissolved in two separate 100 ml beakers of water, which each start...
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