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elena-s [515]
3 years ago
7

30 cm 5 mm= mm Please I need an answer quickly

Chemistry
1 answer:
Wewaii [24]3 years ago
6 0

Answer:

305 millimeters

Explanation:

You didn't say weather to add or subtract, I just assumed addition. (if it's not then tell me and I will answer it again)

Hope this helps!

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Balance the following reaction. A coefficient of "1" is understood. Choose option "blank" for the correct answer if the coeffici
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The given reaction is:

C4H10 + O2 → CO2 + H2O

The above equation is not balanced due to the unequal distribution of atoms on either side of equation

# atoms Reactants           # atoms products

C = 4                                    C = 1

H = 10                                  H = 2

O = 2                                   O = 3

In order to balance it, multiply C4H10 by 2, O2 by 13, CO2 by 8 and H2O by 10 to get:

2C4H10 + 13 O2 → 8CO2 + 10H2O

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Which pH value represents a solution with the lowest OHM<br> ion concentration?
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pH value 1 represents a solution with the lowest OH⁻ion concentration.

<u>Explanation:</u>

pH is given by the expression as the negative logarithm to the base 10 of the concentration of hydrogen ions.

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If the pH is lower than 7, pH < 7 then it is acidic

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If the pH > 7, then it is basic

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6 0
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2. 7.95 x 10^-3 mol sodium chloride will contain = 7.95 x 10^-3 X 6.02x10^23 = 4.79 x 10^21 particles

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