The answer should be 65. The number be added is doubled. +4,+8, +16, +32 So 32+33=65 65+64=129
1/2 over -2/5 + (-1/4)
10/20 over -8/20 + (-5/20)
1 5/20 + (-5/20)
1
The answer is 1
On the right side, there are
• 2•2 = 4 atoms of Nb
• 2•5 = 10 atoms of O
so among the reactants on the left, the reaction is balanced as
4 Nb + 5 O₂ → 2 Nb₂O₅
Answer:
7 1/2+ 7 1/2=146 of 146 Kerry and Eric ran the same amount each
Solution
Switch sides so that m is on the left side
m/r = 2r
Them multiply both sides by r
mr/r = 2rr
Now simplify the equation
m = 2r^2
Therefore the equation evaluates to
m = 2r squared by 2
