Chemistry, 02.09.2019 00:10 twistedhyperboles
Suppose now that you wanted to determine the density of a small crystal to confirm that it is silicon. from the literature, you know that silicon has a density of 2.33 g/cm3 . how would you prepare 20.0 ml of the liquid mixture having that density from pure samples of chcl3 (d = 1.492 g/ml) and chbr3 (d = 2.890 g/ml)? (note: 1 ml = 1 cm3 .)
Answers: 3
Chemistry, 22.06.2019 12:00
What are the first two quantum numbers for the electrons located in subshell 4d? what are the first three quantum numbers for the electrons located in subshell 2s? how many electrons can be held in a sublevel l = 3? how many electrons can be held in the energy level n = 4? how many electrons in an atom can share the quantum numbers n = 4 and l = 3?
Answers: 1
Chemistry, 22.06.2019 15:00
Phosphorous acid, h3po3(aq) , is a diprotic oxyacid that is an important compound in industry and agriculture. p k a1 p k a2 1.30 6.70 calculate the ph for each of the points in the titration of 50.0 ml of 1.5 m h3po3(aq) 1.5 m h 3 po 3 ( aq ) with 1.5 m koh(aq). 1.5 m koh ( aq ) .
Answers: 1
Chemistry, 22.06.2019 15:00
How is the shape of the poem “peer” connected to its meaning?
Answers: 2
Chemistry, 23.06.2019 00:20
How many lone pairs of electrons are on the central atom of no3- and what is the molecular shape? one, trigonal planar zero, trigonal pyramidal zero, trigonal planar one, tetrahedral one, trigonal pyramidal
Answers: 1
Suppose now that you wanted to determine the density of a small crystal to confirm that it is silico...
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