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tresset_1 [31]
3 years ago
9

Convert the scientific notation to a decimal number. Type the correct answer in the box. 4 × 10-5 cm = cm

Chemistry
1 answer:
MakcuM [25]3 years ago
3 0

Answer:

4 * 10^{-5}cm = 0.00004cm

Explanation:

Given

4 * 10^{-5}cm = [\ ]cm

Required

Solve

Apply law of indices

4 * \frac{1}{10^5}cm = [\ ]cm

Evaluate 10^5

4 * \frac{1}{100000}cm = [\ ]cm

4 * 0.00001cm = [\ ]cm

0.00004cm = [\ ]cm

Hence:

4 * 10^{-5}cm = 0.00004cm

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0.556 g of a solid white acid are dissolved in water and completely neutralized by the addition of 52.38 mL of 0.396 M NaOH. Cal
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Answer:

M_{acid}=26.804g/mol

Explanation:

Hello,

In this case, by knowing that the used NaOH equals in moles the acid (monoprotic) as shown below, during the titration:

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Thus, the molar mass of the acid is computed based on the previously computed moles and the given mass as follows:

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Vlad1618 [11]

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n = 1.7 moles

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Given mass, m = 23.8 grams

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Let there is n number of moles. We know that,

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n=\dfrac{23.8}{14}\\\\n=1.7

So, there are 1.7 moles in 23.8 grams of Nitrogen.

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A ball is rolled at a velocity of 3 m/s and rolls for 5 seconds. How far does<br> the ball roll? *
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