Chemistry, 20.10.2020 21:01 cutegirl0987
There are five naturally occurring isotopes of the element zinc. The relative 1 point
abundance and mass of each are as follows. Calculate the average atomic
mass of zinc. *
64
304
Zn = 48.89%, 63.929 amu
30Zn = 27.81%, 65.926 amu
30Zn = 4.11%, 66.927 amu
30Zn = 18.57%, 67.925 amu
30 Zn = 0.62%, 69.925 amu
68
70
Answers: 1
Chemistry, 22.06.2019 02:10
26. of of (aq) by (aq) is . if 50.00 ml of 1.05 m is to 25.00 ml of 1.86 m ,at be? ( no is toina of aof) , h.. (p. ). . .
Answers: 3
Chemistry, 22.06.2019 03:30
The atomic radius of sodium is 186 pm and of chlorine is 100 pm. the ionic radius for na+ is 102 pm and for clβ is 181 pm. in going from na to cl in period 3, why does the atomic radius decrease while the ionic radius increases? a. the inner electrons in the sodium cation shield its valence electrons more effectively than the inner electrons in the chloride anion do. b. the inner electrons shield the valence electrons more effectively in the chlorine atom than in the chloride anion. c. the outermost electrons in chloride experience a smaller effective nuclear charge than those in the sodium cation do. d. the outermost electrons in chloride experience a larger effective nuclear charge than those in the sodium cation do. e. monatomic ions are bigger than the atoms from which they are formed.
Answers: 2
Chemistry, 22.06.2019 14:30
Consider the reduction reactions and their equilibrium constants. cu+(aq)+eββ½βββcu(s)pb2+(aq)+2eββ½βββpb(s)fe3+(aq)+3eββ½βββfe(=6.2Γ108=4.0Γ10β5=9.3Γ10β3 cu + ( aq ) + e β β½ β β β cu ( s ) k =6.2Γ 10 8 pb 2 + ( aq ) +2 e β β½ β β β pb ( s ) k =4.0Γ 10 β 5 fe 3 + ( aq ) +3 e β β½ β β β fe ( s ) k =9.3Γ 10 β 3 arrange these ions from strongest to weakest oxidizing agent.
Answers: 3
Chemistry, 22.06.2019 14:30
Amixture that has two or more substances that are spread out evenly is called a. compound b. heterogeneous c. substance d. homogeneous
Answers: 1
There are five naturally occurring isotopes of the element zinc. The relative 1 point
abundance and...
Biology, 23.10.2020 23:20
History, 23.10.2020 23:20
History, 23.10.2020 23:20
English, 23.10.2020 23:20
Mathematics, 23.10.2020 23:20
Mathematics, 23.10.2020 23:20
Mathematics, 23.10.2020 23:20