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3 years ago

Which measure is equivalent to work/distance

Chemistry

2 answers:

Bad White [126]3 years ago

8 0

The amount of force is what this is for

Katarina [22]3 years ago

8 0

Whenever 'work' is done energy is transferred from one place to another. The amount of work done is expressed in the equation: work done = force x distance. Power is a measure of how quickly work is being done. Power is expressed in the equation: power = work done / time taken.

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Question 12 (1 point)

Stels [109]

Answer:

the answer is D . our galaxy

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3 years ago

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Consider a 125 mL buffer solution at 25°C that contains 0.500 mol of hypochlorous acid (HOCl) and 0.500 mol of sodium hypochlori

Helga [31]

Answer:

pH = 6.82

Explanation:

To solve this problem we can use the Henderson-Hasselbach equation:

pH = pKa + log $\frac{[NaOCl]}{[HOCl]}$

We're given all the required data to calculate the original pH of the buffer before 0.341 mol of HCl are added:

pKa = -log(Ka) = -log(2.9x10⁻⁸) = 7.54

[HOCl] = [NaOCl] = 0.500 mol / 0.125 L = 4 M

pH = 7.54 + log $\frac{4}{4}$

pH = 7.54

By adding HCl, we simultaneously increase the number of HOCl and decrease NaOCl:

pH = 7.54 + log $\frac{[NaOCl-HCl]}{[HOCl+HCl]}$

pH = 7.54 + log $\frac{(0.500mol-0.341mol)/0.125L}{(0.500mol+0.341mol)/0.125L}$

pH = 6.82

6 0

3 years ago

Are these mixtures or pure substance?

Archy [21]

A mixture is a system that is made up of two or more substances which are not combined chemically. A pure substance is a system that only has one substance. The following are classified as:
1.water : pure substance
2.blood : mixture
3.the oceans : mixture
4.iron : pure substance
5.brass : mixture
6.uranium : pure substance
7.wine : mixture
8.leather : mixture
9.table salt (NaCl) : pure substance

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3 years ago

Write the following numbers in standard notation, maintaining the same number of significant figures.

Alexxandr [17]

Answer:

6.104x10^2=610.4

9.5x10^3=9500

Explanation:

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3 years ago

Does salt water or fresh water freeze faster

liberstina [14]

Fresh water freezes faster

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3 years ago

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