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cestrela7 [59]
2 years ago
11

Can you please solve this question??? ​

Chemistry
1 answer:
Mandarinka [93]2 years ago
8 0

Answer:

i)

1 is Argon

2 is Kalium

3 is Calcium

ii)

Y belongs to alkaline metals

Z belongs to alkaline earth metals

iii)

Kalium (Y) is alkaline metal

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Answer:

e. 22s

Explanation:

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How long would it take for the reaction to be 15% complete?

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kt = (1 / [A] ) - (1 / [A]o )

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t = [(1 / 85 ) - (1 / 100) ] / 7.875e^-5

t = (0.0117 - 0.01 ) / 7.875e^-5

t = 0.001765 / 7.875e^-5

t = 22.41 seconds

Corect option = E.

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