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zhuklara [117]
3 years ago
6

Calculate the pOH for a solution with h3o 2.5x10-5 g?

Mathematics
1 answer:
topjm [15]3 years ago
8 0

Answer:

pOH = 9.4

Step-by-step explanation:

Mathematically;

pH + pOH = 14

pOH = 14 - pH

But pH = -log[H3O+]

From the question [H3O+] = 2.5 * 10^-5

Thus pH = -log (2.5 * 10^-5)

pH = 4.6

Thus;

pOH = 14-4.6

pOH = 9.4

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If, while training for a marathon, you ran 76 miles in 2 2/3 months, how many miles did you run each month? (Assume you ran the
Gnesinka [82]
In 2 2/3 months you ran 76 miles.
To know how many miles you ran each month, you can simply use cross multiplication as follows:
number of miles per month= (76) / (2 2/3)
= 28.5 miles
3 0
3 years ago
0.3y + y/z= y=10 and z=5
Xelga [282]

Answer:

32

Step-by-step explanation:

write the equation

0.3y + y/z=

Then you fill in what you know

0.3(10) + 10/5=

then we multiply/divide

30 + 10/5

then we continue to multiply/divide untill there is nothing to multiply/divide anymore

30+2

then we add/subtract

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Our answer is 32

3 0
3 years ago
The poorest person in a country has 50$ and the richest had $9.956. How much less money does the poorest have
Alecsey [184]
What you need to do is subtract since the key word "How much Less money"  is in it.

$9.956-$50 = 40.044$
4 0
3 years ago
Which rate describes a unit price
egoroff_w [7]

Answer:

$0.35 per minute

Step-by-step explanation:

Rate in terms of unit price is something made in 1 unit (seconds, cups, minutes etc.)

per minute refers to<em> per 1 minute</em>

3 0
3 years ago
Read 2 more answers
A pump fills 25 of a tank in 23 hour. At this rate, how much of the tank will the pump fill in an hour?
Sophie [7]

60% or 3/5 of the tank will be filled in an hour.

The pump will fill 2/5 of the tank in 2/3 hours.

In order to find out how much of the tank will be filled in an hour, use direct proportion and assume portion of the tank that will be filled up in an hour is x.

<em>2/5 of tank        :            2/3 hours </em>

<em>x of tank            :             1 hour </em>

Cross multiply to get:

2/3x = 2/5

x = 2/5 ÷ 2/3

x = 2/5 x 3/2

= 0.6 of the tank

= 60%

= 3/5 of tank

In conclusion, 60% of the tank will be filled in an hour.

<em>Find out more at brainly.com/question/14336804.</em>

6 0
2 years ago
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