Answer:
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Explanation:
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5. Which are generally less soluble, compounds with chlorate ions or carbonate ions?
1 answer:
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Answer:
a . eight tenths of her cookies
Explanation:
Let the total number of Lakesha's cookies be represented by x.
So that;
She gave three tenths to Bailey = of x
=
She gave five tenths to Helen = of x
=
Fraction of Lakesha's cookies given away = +
=
=
Thus, the fraction of cookies given away by Lakesha is .
Answer : The concentration after 17.0 minutes will be,
Explanation :
The expression for first order reaction is:
where,
= concentration at time 't' (final) = ?
= concentration at time '0' (initial) = 0.100 M
k = rate constant =
t = time = 17.0 min = 1020 s (1 min = 60 s)
Now put all the given values in the above expression, we get:
Thus, the concentration after 17.0 minutes will be,