2 years ago

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Chemistry

1 answer:

VLD [36.1K]2 years ago

8 0

Answer:

arthropod

Explanation:

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Fatty acids spread spontaneously on water to form a monomolecular film. A solution containing 0.10 mm^3 of a fatty acid is dropp

lara31 [8.8K]

Divide the volume by the area. Using scientific makes things a bit cleaner.

$0.10\,\mathrm{mm}^3 = 10^{-1}\,\mathrm{mm}^3$

$400.\,\mathrm{cm}^2 = 4\times10^2\,\mathrm{cm}^2$

Then

$\dfrac{10^{-1} \,\mathrm{mm}^3}{4\times10^2\,\mathrm{cm}^2} \cdot \dfrac{\left(\frac{1\,\rm m}{10^3\,\rm mm}\right)^3}{\left(\frac{1\,\rm m}{10^2\,\rm cm}\right)^2} = \dfrac{10^{-1}\times10^{-9} \,\mathrm m^3}{4\times10^2\times10^{-4}\,\mathrm m^2} = \dfrac{10^{-10}}{4\times10^{-2}}\,\mathrm m \\\\ ~~~~~~~~= 0.25\times10^{-8}\,\mathrm m$

Now, 1 m = 10⁹ nm, so

$0.25 \times10^{-8}\,\mathrm m \cdot \dfrac{10^9\,\rm nm}{1\,\rm m} = 0.25\times10^1\,\mathrm{nm} = \boxed{2.5\,\rm nm}$

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1 year ago

it is often thought that two mutations must happen in a cell to create a cancerous cell. What two cell functions could mutate an

grigory [225]

Answer:

Tumor Suppressor genes,

and proto oncogenes.

Explanation:

can mutate and lead to a cancerous cell.

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2 years ago

What is the number of formula units in a 9.87 mol sample of NH4NO3 ?

Varvara68 [4.7K]

Answer:

59.42 ×10²³ formula units

Explanation:

Given data:

Number of moles of NH4NO3 = 9.87 mol

Number of formula units = ?

Formula:

Number of formula units = moles × Avogadro number

Solution:

Avogadro number = 6.02×10²³

Number of formula units = 9.87 × 6.02 ×10²³

Number of formula units = 59.42 ×10²³ formula units

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2 years ago

The presence of which reactant is the best indicator of an oxidation-reduction reaction? KNO3 H2SO4 NaOH H2

expeople1 [14]

The presence of which reactant is the best indicator of an oxidation-reduction reaction?
KNO3H2SO4NaOHH2

H2!

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3 years ago

Read 2 more answers

Question is in picture! Will give extra points and BRAINLIEST! Promise!!! No links or I will report. Make sure it’s a legitimate

koban [17]

Try to look it up your welcome

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3 years ago