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3 years ago

OS-182 has a half-life of 3.6 days. If a sample started at 175 grams, how much would be led after 18 days?

Chemistry

2 answers:

Stels [109]3 years ago

8 0

Answer:

110.2 grams

Explanation:

Educere/ Founder's Education Answer

hodyreva [135]3 years ago

3 0

I think c is correct answer
.............

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In a mixture of 3 gases what is the total pressure of the gases if Gas A exerts a pressure

kirill [66]

Answer:

760 mm of Hg

Explanation:

If the gases A , B and C are non reacting , then according to Dalton's Law of Partial Pressure the total pressure exerted is equal to sum of individual partial pressure of the gases .

If there are n , number of gases then ,

$P_{total}= P_1+P_2+P_3+\dots +P_n$

Here ,

Partial pressure of Gas A = 400mm of Hg
Partial pressure of Gas B = 220 mm of Hg
Partial pressure of Gas C = 140mm of Hg

Hence the total pressure exerted is ,

$P_{total}= P_{Gas\ A }+P_{Gas\ B }+P_{Gas\ C }$

Substitute ,

$P_{total}=( 400 + 220 + 140 )mm\ of \ Hg$

Add ,

$P_{total}= 760\ mm\ of \ Hg$

Hence the total pressure exerted by the gases is 760 mm of Hg.

I hope this helps.

4 0

2 years ago

8. What is the molecular formula of a compound if 0.50 moles of it contains 0.50

11Alexandr11 [23.1K]

Answer:

Explanation:

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3 years ago

Sulfurous acid, H2SO3, breaks down into water (H20) and sulfur dioxide (SO2).

erastovalidia [21]

Answer:

1 atom of sulfur

Explanation:

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3 years ago

Define "Mutarotation"

zubka84 [21]

Answer:

Mutarotation refers to the change in the optical rotation or optical activity of a solution due to the change in the equilibrium of the two anomers. It depends upon the optical activity and ratio of the anomeric forms in the solution.

To measure the optical rotation of a given solution, a polarimeter can be used and thus the ratio of the anomeric forms can be calculated.

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3 years ago

Which tool can be used to measure the volume of a liquid to one decimal place?

pentagon [3]

The tool to measure the liquid is a measuring cylinder.

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3 years ago

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