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Anon25 [30]
3 years ago
14

How was a first person how made earth

Chemistry
1 answer:
enyata [817]3 years ago
7 0
God made the earth, I dont know the whole story but in genesis it tells you how the earth was made.
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Calculate the ph of a solution with a [H3O+]=5.6x10-9M
Kisachek [45]

Answer:

               pH  =  8.25

Explanation:

                   The acidity or basicity of a solution is measured by its pH. The pH scale ranges from 0 to 14. Solutions having pH from 0-6.9 are considered acidic, at 7 neutral and basic when ranging from 7.1-14.

pH is calculated as,

                                 pH  =  - log [H⁺]   ---- (1)

Where;

            [H⁺]  =  concentration of Acid

Also, for bases pH i calculated using following formula,

                                 pH  =  14 - pOH

Therefore, Putting value of H⁺ in equation 1,

                                 pH  =  - log [5.6 × 10⁻⁹]

                                pH =  8.25

The solution provided is basic in nature.

6 0
3 years ago
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Evaporation!
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4,600,000,000,000 in scientific notation
BabaBlast [244]
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Please help!! Having trouble with this
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For #4 first find the molar mass(M) of copper then use that and the mass (m) n=m/M to find moles(n) using moles and the volumes find the concentration using c=n/V
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When an object is pushed by a force and moves in the direction of the force, work is done on the object. The amount of work equa
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Explanation:

workdone = force \times distance \\ W = (2.6 \times  {10}^{ - 4} ) \times (3.7 \times  {10}^{ - 3} ) \\ W = 9.62 \times  {10}^{ - 7}  \: joules

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3 years ago
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