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lukranit [14]
4 years ago
11

You have come down with a nasty cold and would like to understand why the virus that infected you is making you feel so lousy. W

ith a few basic facts, given here within the problem, you can show that each infected cell is now very full of virus particles, resulting in your current condition.
a. Given that a typical cell is about 10 um in diameter, calculate its volume in liters.
b. Find the concentration (in Molarity) of a single virus within that cell.
c. Find the concentration (in Molarity) of 100 virus particles within that cell.
Chemistry
1 answer:
umka21 [38]4 years ago
4 0

Answer:

a) The volume is 5.236x10⁻¹³L

b) The molarity of a single virus is 1.91x10¹² mol/L

c) The molarity for a 100 virus particles is 1.91x10¹⁴ mol/L

Explanation:

a) Given:

D = diameter of the cell = 10 μm

r = radius = 10/2 = 5 μm

The volume of the spherical cell is equal:

V=\frac{4}{3} \pi r^{3} =\frac{4}{3} \pi *(5)^{3} =523.6\mu m^{3}

If 1 μm³ = 1x10⁻¹⁵L, then 523.6 μm³ = 5.236x10⁻¹³L

b) The molarity is:

M=\frac{number-of-moles}{volume-of-solution}

For a single virus within the cell

M=\frac{1}{5.236x10^{-13} } =1.91x10^{12} mol/L

c) For a 100 virus particles the molarity is:

M=\frac{100}{5.236x10^{-13} } =1.91x10^{14} mol/L

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MariettaO [177]

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d(H) = 10 nm; diameter of hydrogen atom.

d(H) = 10 nm · 0.001 µm/nm.

d(H) = 0.01 µm = 10⁻² µm.

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d(H) = 10 nm.

d(H) = 10 nm · 10⁻⁹ m/nm.

d(H) = 0.00000001 m = 10⁻⁸ m.

3) 1 nm = 10⁻⁶ mm ; one nanometer is equal to 0.000001 (10⁻⁶) millimeter.

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4 0
3 years ago
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3 years ago
For many years scientists thought that dinosaurs rapidly replaced their ancestors. New information shows that dinosaurs and thei
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Answer:

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Fossils have been the strongest evidence of the existence of extinct species in the remote past. The discovery of some species and their possible ancestors in the same layer of rocks confirms the possibility of the coexistence of evolutionary forms of the same species, for a great period of time.

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I hope it helps you.

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