Chemistry, 20.04.2020 01:41 riverviewfarm2133
1) How many sulfur atoms are there in 21.0 g of Al2S3? A) 8.42 1022 atoms D) 6.02 1023 atoms B) 2.53 1023 atoms E) 6.30 1026 atoms C) 2.14 1023 atoms Ans) B
Answers: 3
Chemistry, 22.06.2019 02:00
The alkali metals (group 1) consist of lithium (3), sodium (11), potassium (19), rubidium (37), cesium (55), and francium (87). they are soft, metallic solids with low densities and low melting points. based on the data shown in figure 1, how many valence electrons do alkali metals share?
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Chemistry, 22.06.2019 16:00
Click the button that shows the correct relationship of the electron affinities of the elements sodium and phosphorus. sodium’s electron affinity value is more negative than the electron affinity value of phosphorus. phosphorus’ electron affinity value is more negative than the electron affinity value of sodium. this information cannot be determined using the periodic table. answer is b on e2020.
Answers: 3
Chemistry, 22.06.2019 17:30
In a heat of an engine, if 700 j enters the system, and the piston does 400 j of work what is the final internal (thermal) energy of the system if the initial energy is 1,500 j
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Chemistry, 22.06.2019 18:30
Which sample at stp has the same number of atoms as 18 liters of ne at stp
Answers: 1
1) How many sulfur atoms are there in 21.0 g of Al2S3? A) 8.42 1022 atoms D) 6.02 1023 atoms B)...
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