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Elis [28]
3 years ago
5

Strontium (Sr) is a silvery metal element that burns an intense color in air and reacts with water. Which of the following eleme

nts will share similar properties?
A.Potassium (K)

B.Calcium (Ca)

C.Yttrium (Y)

D.Tin (Sn)
Biology
1 answer:
Roman55 [17]3 years ago
7 0

Answer: A

Explanation: Because jsnsnnznzms

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Potassium has a half-life of 12 hours. What fraction of a 100g sample is left after 48 hours
EastWind [94]

Answer:

After 48 hours amount left = 6.25 g

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