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Lunna [17]
3 years ago
12

How many molecules are there in 6.73 moles of phosphorus trichloride? (write your answer in scientific notation).

Chemistry
1 answer:
anyanavicka [17]3 years ago
3 0

Answer: There are 4.05\times 10^{24}  molecules in 6.73 moles of phosphorus trichloride

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number 6.023\times 10^{23} of particles.

1 mole of PCl_3 contains = 6.023\times 10^{23}  molecules

Thus 6.73 moles of PCl_3 contains = \frac{6.023\times 10^{23}}{1}\times 6.73=4.05\times 10^{24}  molecules

Thus there are 4.05\times 10^{24}  molecules in 6.73 moles of phosphorus trichloride

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disa [49]

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Cells are uncountable becasue they move around your body, make up your skin and other organs as well. And because when you grow, the cells multiply, and that makes it very hard for scientists to count cells in a human's body.

Explanation:

Hope this helped!

3 0
3 years ago
For the substituted cyclohexane compound shown, identify the atoms that will interact with the methyl group in a
zalisa [80]

Answer: choice: I & Choice E

Explanation:

8 0
3 years ago
3.
belka [17]

Answer:

3. Inverse 1. Direct

Explanation:

P- pressure

V - volume

T - temperature

P1*V1 / T1 = P2*V2 / T2 ...... (1)

That's the general gas law with the combined ideas of charles, boyle & lussac.

Whenever you are restricted as "constant" temperature, volume, or pressure...cancel them off of your equation.

in this case 3. is indirectly telling us to cancel the temperature (T).

so we'll be left w P1*V1 = P2*V2

now notice that any relation ship that is multiplied like the one above consists of inversely related quantities. & so we conclude that-

P & V are inversely proportional or have an inverse relationship.

similarly in 1. we'll cancel p off of the general formula (1)

to be left with V1/T1 = V2/T2

also note that quantities involved in division are directly related to each other & hence the answer.

5 0
2 years ago
True or false, The four units that must always be used when using the ideal gas are 44.0 liters
Bogdan [553]

Answer:

for volume only liters can be used

Explanation:

4 0
2 years ago
After completing an experiment to determine gravimetrically the percentage of water in a hydrate, a student reported a value of
SIZIF [17.4K]

Answer:

b) The dehydrated sample absorbed moisture after heating

Explanation:

a) Strong initial heating caused some of the hydrate sample to splatter out.

This will result in a higher percent of water than the real one, because you assume in the calculation that the splattered sample was only water (which in not true).

b) The dehydrated sample absorbed moisture after heating.

Usually inorganic salts may absorbed moisture from the atmosphere so this will explain the 13% difference between calculated water percent the real content of water in the hydrate.

c) The amount of the hydrate sample used was too small.

It will create some errors but they do not create a difference of 13% difference as stated in the problem.

d) The crucible was not heated to constant mass before use.

Here the error is small.

e) Excess heating caused the dehydrated sample to decompose.

Usually the inorganic compounds are stable in the temperature range of this kind of experiments. If you have an organic compound which retain water molecules you may decompose the sample forming volatile compounds which will leave crucible so the error will be quite high.

6 0
3 years ago
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