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valina [46]
3 years ago
7

The picture shows a spoonful of salt being added to a glass of water. What physical property of the salt is being demonstrated?A

.
A.
solubility

B.
density

C.
boiling point

D.
melting point

Chemistry
2 answers:
RSB [31]3 years ago
4 0
Solubility is your answer, it’s not being melted and it’s not boiling point. Neither will it be density.
xeze [42]3 years ago
3 0
It depends but I would say if the water is not boiling or hot the it’s solubility
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Answer:

0.6749 M is the concentration of B after 50 minutes.

Explanation:

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Half life of the reaction = t_{1/2}=25 minutes

Rate constant of the reaction = k

For first order reaction, half life and half life are related by:

k=\frac{0.693}{t_{1/2}}

k=\frac{0.693}{25 min}=0.02772 min^{-1}

Initial concentration of A = [A]_o=0.900 M

Final concentration of A after 50 minutes = [A]=?

t = 50 minute

[A]=[A]_o\times e^{-kt}

[A]=0.900 M\times e^{-0.02772 min^{-1}\times 50 minutes}

[A] = 0.2251 M

The concentration of A after 50 minutes = 0.2251 M

The concentration of B after 50 minutes = 0.900 M - 0.2251 M = 0.6749 M

0.6749 M is the concentration of B after 50 minutes.

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