Chemistry, 20.10.2019 11:00 rachelsweeney10
In another universe the electrons are described by four quantum numbers p, q, r, and s. the rules for these quantum numbers are as follows. • p = 1, 2, 3, 4, 5, ; • q takes on positive odd integers and q ≤ p; • r takes on all even integer values from −q to +q; • s = ±1/2. (a) sketch what the first four periods of the periodic table will look like in this universe. (b) what are the atomic numbers of the first four elements you would expect to be least reactive? (c) give an example, using elements in the first four rows, of ionic compounds with the formulas, of ionic compounds with the formulas xy, xy2, x2y, xy3, and x2y3. (d) how many electrons can have p = 4, q = 3? (e) how many electrons can have p = 3, q = 0, r = 0? (f) how many electrons can have p = 6?
Answers: 2
Chemistry, 21.06.2019 17:10
There are 6.022 x 10^23 atoms of hg in 1 mole of hg. the number of atoms in 4.5 moles of hg can be found by multiplying 4.5 by 6.022 x 10^23 a. 2.7 x 10^24 b. 27 x 10^23 c. 2.71 x10^24 d. 27.099 x 10^23
Answers: 3
Chemistry, 22.06.2019 04:30
Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.
Answers: 2
Chemistry, 22.06.2019 07:00
The organism shown is a free-living one that is anchored to the bottom of ponds and streams during one stage of its life cycle what is the common name for the group to which this organism belong
Answers: 3
Chemistry, 22.06.2019 08:40
For each of the following compounds, write the formula then predict whether it would be a strong, weak, or non-electrolyte when placed in di water. for the ionic compounds only, put (s) or (aq) after the forrmula formula strong, weak or non electrolyte? a calcium hydroxide b. silver carbonate c. lead(ii) sulfate d. phosphorus trifluoride e. sodium phosphide f barium sulfate g. strontium acetate h. zinc nitrate
Answers: 3
In another universe the electrons are described by four quantum numbers p, q, r, and s. the rules fo...
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