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otez555 [7]
3 years ago
6

This chart show the amount of radioactivity measured from three unknown isotopes.

Chemistry
1 answer:
Ad libitum [116K]3 years ago
5 0

Answer:

We are asked to describe the half-life of the radioactive materials.

  • Hence the 3rd option is correct
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Which of the following helps explain how a rainbow of colors can form when sunlight passes through a prism?
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Explain how you can convert from the number of representative particles of a substance to moles of that substance.
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8 0
3 years ago
What is the ph of 0.51 m ca(ch3coo)2 solution?
Sidana [21]

Answer : The pH of calcium acetate solution will be 9.38.


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Acetate ion then hydrolyzes as follows;


C_{2}H_{3}O_{2}^{-}  + HOH  HC_{2}H_{2}O_{2} + OH^{-}:

Now, Kb will be = [HC_{2}H_{2}O_{2}]  [OH^{-}] / [C_{2}H_{3}O_{2}^{-}]


= Kw / Ka


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3 years ago
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