Mole
Calcualtions
Balancing Equations
Electron Configuration
Noble Gas Configuration
Element Information
100
If a chemist has 14 g of Magnesium (Mg), how many moles does she have?
0.576 mol
100
K + Cl2 ---- KCl
2 1 ----- 2
100
Aluminum (Al)
1s2 2s2 2p6 3s2 3p1
100
Silicon (Si)
[Ne] 3s2 3p2
100
How many protons does the element Tungsten (W) have?
74
200
If you are given 13 g of Fe, how many moles do you have?
.23 mol
200
Al + O2 ----- Al2O3
4 3 ----- 2
200
Carbon (C)
1s2 2s2 3s2
200
Cobalt (Co)
[Ar] 4s2 3d7
200
How many electron does the element Gold (Au) have?
79
300
How many grams are there in 6.7 moles of chlorine?
237.54 g
300
Ag2SO4 + CaCl2 AgCl + CaSO4
1 1 ----- 2 1
300
Which element has an electron configuration of 1s2 2s2 2p6 3s2 3p4
Sulfur (S)
300
Silver (Ag)
[Kr] 4d9
300
What is the mass number of Arsenic (As) ?
75
400
If you have a mole of quarters, how many quarters do you have?
6.02 x 10 ^ 23
400
Mg3N2 + H2O ----- MgO + NH3
1 3 ----- 3 2
400
Which element has an electron configuration of 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s1
Rubidium (Rb)
400
Which element has a noble gas configuration of [Kr] 4d10 5s2 5p2
Tin (Sn)
400
How many neutrons does Cadmium (Cd) have?
64
500
If you add 12 g of Be to 6 moles of Be, how many total grams do you have?
66.072 g
500
C3H8 + O2 ------ CO2 + H2O
1 5 ----- 3 4
500
Silver (Ag)
1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d9
500
Which element has a noble gas configuration of [Xe] 4f14 5d10 6s2 6p6
Radon (Rn)
500
How many protons does an element have if its mass number is 45 and it has 24 neutrons?
21
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