Chemistry

Chemistry, 22.07.2019 05:40, DogeDog6954

What is the chemical equation of rubbing alcohol and salt (nacl)?

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Chemistry, 29.06.2019 04:30, hmu323

Place the following compounds in order of increasing vapor pressure. rubbing alcohol [ (ch3)2choh) ]; propane, diethyl ether (ch3ch2-o-ch2ch3) a. diethyl ether < propane < rubbing alcohol b. diethyl ether < rubbing alcohol < propane c. rubbing alcohol < propane < diethyl ether d. propane < diethyl ether < rubbing alcohol e. propane < rubbing alcohol < diethyl ether f. rubbing alcohol < diethyl ether < propane

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Chemistry, 12.07.2019 15:00, magicallyhello

Rubbing alcohol is typically diluted with water to 70% strength. if you need 3.5 oz of 45% rubbing alcohol, how many ounces of 70% rubbing alcohol and how much water should you combine?

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Chemistry, 21.07.2019 06:00, kodaxmodz

While studying chemical and physical changes, students added salt to a glass of water. they stirred the salt until it dissolved and could no longer be seen. "that's a chemical change," sarah stated. do you agree? explain. a) yes, it is a chemical change because something new is formed. b) no, it is a physical change. it is salt and water and you can get the salt back by boiling off the water. c) yes, it is a chemical change because there was a change in the appearance of one of the components, the salt. d) no, it is a physical change. a chemical change cannot occur when you mix two compounds together like salt, nacl, and water, h2o, without adding heat.

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Chemistry, 25.09.2019 01:00, xbeatdroperzx

A1-m depth of stagnant water lies on top of a 0.35 cm thickness of nacl. at time t < 0, the water is pure. at time t 0, the salt begins to dissolve into the water. if the concentration of salt in the water at the solid-liquid interface is maintained at saturation (0.00685 mol nacl/cm3) and the diffusivity of nacl is 2.3c-005 cm2/s, independent of concentration, estimate, by assuming the water to act as a semi-infinite medium, the time of salt in the water when: (a) 10% of the salt has dissolved; ; (b) 50% of the salt has dissolved, and (c) 90% of the salt has dissolved. density of nacl 2.165 g/cm3. molecular weight of nacl 58.44 g/mol.

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