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MariettaO [177]
3 years ago
8

Cobalt-60 decays into nickel-60 via beta decay with a half-life of 5.27 years. A purse sample of cobalt-60 is prepared, with no

contamination of other isotopes. After 5.27 years, what is the ratio of cobalt-60 to nickel-60 in the sample?
Chemistry
1 answer:
Naily [24]3 years ago
4 0

Answer:

1:1

Explanation:

Since that is it's half life.

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Which of the following aqueous solutions has the lowest pH? Why?
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Answer:

HCI

Explanation:

The solution with the lowest pH is HCI with a pH value of 1. It is understood that it is more acidic because it is a strong acid.
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What type of contamination occurs if a paint chip falls into soup
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Physical contamination occurs if a paint chip falls into soup

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3 years ago
Balance each chemical equation.<br> Hg2(C2H3O2)2(aq)+KCl(aq)→Hg2Cl2(s)+KC2H3O2(aq)
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Answer:

Explanation:

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4 0
2 years ago
Several balloons are inflated with helium to a volume of 0.75 L at 27°C. One of the balloons was found several
defon

Answer:

V₂ = 0.74 L

Explanation:

Given data:

Initial volume of balloon = 0.75 L

Initial temperature of balloon = 27°C (27+273.15 K = 300.15 K)

Final volume of balloon = ?

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Solution:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 0.75 L × 295.15 k / 300.15 K

V₂ = 221.36 L.K / 300.15 K

V₂ = 0.74 L

The given problem is solved through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

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Answer:

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Explanation:

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3 years ago
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