Chemistry, 19.04.2020 00:22 MysteryDove12
What method would be used to find the number of different-colored components in a sample of black ink? I know it is chromatography but I'm unsure of which one.
A) Column chromatography using a nonpolar stationary phase and water as the mobile phase
B) Paper chromatography using different solvents with a range of polarities as the mobile phase
Answers: 1
Chemistry, 22.06.2019 02:10
When 225mg of anthracene, c14h10(s), was burned in a bomb calorimeter the temperature rose by 1.75k. calculate the calorimeter constant. by how much will the temperature rise when 125mg of phenol, c6h5oh(s), is burned in the calorimeter under the same conditions? (δch< (c14h10,s)=–7061 kj mol−1.)
Answers: 3
Chemistry, 22.06.2019 03:30
Select the correct answer. when carbon dioxide dissolves in water, it sometimes reacts with water to form carbonic acid as in this balanced equation: co2 + h2o → h2co3. if 495 milliliters of carbon dioxide at 25°c and 101.3 kilopascals reacts with excess water, what is the theoretical yield of carbonic acid? use the periodic table and the ideal gas resource a. 0.889 g b. 1.10g c. 1.27g d. 2.02g what's the answer! quick!
Answers: 1
Chemistry, 22.06.2019 12:00
What is the percentage of hydrogen in nitrogen trihydride
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Chemistry, 22.06.2019 23:00
What is the energy in joules of a mole of photons associated with visible light of wavelength 486 nm?
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