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zlopas [31]
3 years ago
12

A 4Kg rock is rolling 10m/s find it’s kinetic energy

Chemistry
1 answer:
Lubov Fominskaja [6]3 years ago
5 0
KE=.5mv^2
M=mass
v=velocity
.5(4)(100)=200
That should be the answer.
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butalik [34]

The H3O+  concentration  of the solution with  a PH  of 3.60  is  2.5  x10^-4 M (answer  A)


   <u><em>explanation</em></u>

PH is calculated  using PH = - log  [ H3O+]  formula


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To calculate  the concentration of h3O+  ,find the  antilog  of 3.60

Since  -log is at base of 10, the antilog  of 3.60  = 10^-3.60  = 2.5 x10^-4M

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