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stira [4]
3 years ago
9

Examining the figure, how many orders of magnitude larger is a person than a bacterial cell?

Chemistry
1 answer:
Allushta [10]3 years ago
8 0
Well you did not show the figure, but I can show you how to do it.

Suppose the person is 6 feet tall and the bacteria cell is 1 micrometer in length.

So, put both magnitudes in the same units. I will use meter.

Person: 6 feet * 0.3048 m / foot = 1.8288 m, which in orders of magnitud is about 2 m

Bacteria cell: 1 micrometer * 1 m / 1,000,000 micrometer = 1 * 10 ^ -6 m.

Now divide: 2m / 10^ -6 m = 2,000,000

So a person is about 2 million times larger than a bacteria cell.

If the numbers in your figure are different you can use the same method to get a new result according to your figure.
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3 0
3 years ago
Calculate the ph of a buffer that is 0.225 m hc2h3o2 and 0.162 m kc2h3o2. the ka for hc2h3o2 is 1.8 Ã 10-5. 4.60 9.26 4.74 4.89
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The pH of the buffer solution is 4.60.

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Concentration of acid = [HC_2H_3O_2]=0.225 M

Concentration of salt = [KC_2H_3O_2]=0.162 M

Dissociation constant = K_a=1.8 \times 10^{-5}

The pH of the buffer can be determined by Henderson-Hasselbalch equation:

pH=pK_a+\log\frac{[salt]}{[acid]}

pH=-\log[1.8 \times 10^{-5}]+\log\frac{0.162 M}{0.225 M}

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8 0
3 years ago
Read 2 more answers
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