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Setler79 [48]
3 years ago
13

Scientific notation of 0.000421

Chemistry
1 answer:
Katena32 [7]3 years ago
8 0
4.21 x 10^-4
This should be it
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PLS HELP! WILL MARK BRAINLIEST!!! 50 PTS
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Answer:

from the pic:

empirical \: formular :  \:  \: C  _{2}H _{3}O _{2}

since molar mass is 118.084 g/mol;

(C  _{2}H _{3}O _{2}) _{n} = 118.084 \\ C  _{2n}H _{3n}O _{2n} = 118.084 \\(12 \times 2)  _{n} + (1 \times 3) _{n} + (16 \times2 ) _{n} = 118.084 \\ 24_{n} + 3_{n} + 32_{n} = 118.084 \\ 59_{n} = 118.084 \\ n = 2

{ \boxed{ \bf{molecular \: formular :  \: C  _{4}H _{6}O _{4}}}}

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2 years ago
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An unknown metal displaces Ali from solution but does not displace sodium using the activity series determine the unknown metal
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Explanation:

Hope this helps! :)

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