If someone takes a material that looks pure, and then they do something to it that results in two separate materials, how can they know if they originally had a pure-looking mixture of two things that they simply separated into its parts, or if they originally had a pure material that was a compound that was chemically broken down into new compounds or elements?
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Chemistry, 22.06.2019 21:30
Isopropyl alcohol, (ch3)2choh, is a common solvent. determine the percent by mass of hydrogen in isopropyl alcohol. a) 6.71% h b) 13.4% h c) 25.0% h d) 53.3% h
Answers: 1
Chemistry, 22.06.2019 22:00
Scientists often have to deal with numbers that are either very large or very small. for example, the radius of the sun is approximately 696,000 kilometers, while bacterial cells are as small as 1.9 × 10-4 millimeters. express each number in an alternate form.
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Chemistry, 23.06.2019 02:10
Detrimental the length of the object shown 1. 97.8mm 2. 97.80 mm 3. 97mm 4. 98mm
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Chemistry, 23.06.2019 18:00
Which of the following hydrocarbons will most likely be found around cows? a. ethane b. methane c. octane d. decane
Answers: 2
If someone takes a material that looks pure, and then they do something to it that results in two se...
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