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yaroslaw [1]
2 years ago
5

How many ounces of 20% hydrochloric acid and 70% hydrochloric acid must be mixed to obtain 20 ounces of 50% hydrochloric acid so

lution?
Mathematics
1 answer:
Sliva [168]2 years ago
5 0
I can’t solve it sorry....................................................<3
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3 years ago
What is 3 ln 3 - ln 9 expressed as a single natural logarithm?
marusya05 [52]
Answer: In 3
SOLVINGS
What is 3 ln 3 - ln 9 expressed as a single natural logarithm

Since ln (m^n) = n⋅ln (m)                 … natural logarithmic property
We can further simplify the expression 3 ln 3
3 In 3 = In (3^3)
Therefore, 3 ln 3 - ln 9 = In (3^3) – In 9

Since ln(m/n) =ln(m) – ln(n)         … natural logarithmic property
We can further simplify the expression In (3^3) – In 9
In (3^3) – In 9 = In [(3^3)/(9)]
= In (27/9)
= In 3

Therefore, 3 ln 3 - ln 9 expressed as a single natural logarithm is In 3.
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