Chemistry, 24.06.2019 13:40 lexiecooley
Electron drift mobility in tin (sn) is 3.9 cm2 v-1 s-1. the room a. temperature (20 c) resistivity of sn is about 110 nq m. atomic mass mat and density of sn are 118.69 g mol-1 and 7.30 g cm-3, respectively. how many "free" electrons are donated by each sn atom in the crystal? how does this compare with the position of sn in group ivb of the periodic table? b. consider the resistivity of few selected metals from groups i to iv in the periodic table in table 2.7. calculate the number of conduction electrons contributed per atom and compare this with the location of the element in the periodic table. what is your conclusion? table 2.7 selection of metals from groups i to v in the periodic table density resistivity (n2 m mobility (cm2v-s periodic metal group valency (g cm na ia 0.97 42.0 53 mg ag zn па 2 1.74 44.5 17 ib 1 10.5 15.9 56 iib 2 7.14 59.2 8 al шв 2.7 26.5 12 sn ivb 4 7,30 110 3.9 pb ivb 4 11.4 206 2.3 note: mobility from hall-effect measurements
Answers: 2
Chemistry, 22.06.2019 12:00
There is one girl i like and i don't know how to tell her that, i have a feeling she knows but if she doesn't i don't want to make a fool out of myself how is one way to boost my confidence on asking her out
Answers: 1
Chemistry, 22.06.2019 19:10
Which statement correctly describes the phosphate ion, ? it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms covalently bonded together, and there is a –3 charge on the phosphorus atom. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge distributed over the entire ion. it is composed of one phosphorus atom and four oxygen atoms ionically bonded together, and there is a –3 charge on the phosphorus atom.
Answers: 3
Chemistry, 22.06.2019 19:30
Awoman's basketball has a circumference between 28.5 and 29.0 inches and a maximum weight of 20 ounces (two significant figures). what are these specifications in units of centimeters and grams?
Answers: 2
Chemistry, 23.06.2019 00:10
Find the missing probability in the table below a.0.10 b.40 c.0.80 d. 0.20
Answers: 2
Electron drift mobility in tin (sn) is 3.9 cm2 v-1 s-1. the room a. temperature (20 c) resistivity o...
History, 03.02.2021 23:40
History, 03.02.2021 23:40
Chemistry, 03.02.2021 23:40
Mathematics, 03.02.2021 23:40
Mathematics, 03.02.2021 23:40
Mathematics, 03.02.2021 23:40
Spanish, 03.02.2021 23:40
English, 03.02.2021 23:40
Mathematics, 03.02.2021 23:40
Mathematics, 03.02.2021 23:40
English, 03.02.2021 23:40
Mathematics, 03.02.2021 23:40