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zaharov [31]
3 years ago
11

A 1.0 l buffer solution is 0.10 m in hf and 0.050 m in naf. which action destroys the buffer?

Mathematics
1 answer:
nikklg [1K]3 years ago
7 0
A buffer is a useful chemical in science that is composed of a weak acid and salt. From the given compounds above, between HF and NaF, HF is a strong acid and NaF is a salt. Thus, addition of HF will most likely destroy the buffer. 
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Lewis walked 9/10 of a mile. His friend walked 2/5 of the way with him. How many miles did Lewis's friend walk with him?
iVinArrow [24]

Answer:

Lewis's friend walked with him 9/25 miles

Step-by-step explanation:

Given that

Lewis walked 9/10 of a mile

And His friend accompanied him on 2/5 of the way.

This is a simple question of fraction multiplication

The fraction 2/5 has to multiplied with the miles walked by lewis

So

= \frac{2}{5} * \frac{9}{10}\\=\frac{9}{25}

Hence,

Lewis's friend walked with him 9/25 miles

5 0
3 years ago
A 12-member jury is to be selected from 15 men and 13 women. Find the probability that this jury has 6 or 7 males.
Bas_tet [7]

Answer:

The right solution is "0.5545".

Step-by-step explanation:

According to the question,

The probability of having 6 or 7 males will be:

= P(6 \ males)+ P(7 \ males)

= \frac{15_C_6\times 13_C_6}{28_C_{12}} + \frac{15_C_7\times 13_C_5}{28_C_{12}}

= \frac{5005\times 1716+6435\times 1287}{30421755}

= \frac{16870425}{30421755}

= 0.5545

8 0
3 years ago
Please solve this I'll give a good review and comment ty ^^ I also will give brainly if somebody else answers
IRISSAK [1]

Answer:

3. B

4. D

5. A

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6 0
3 years ago
3 1/3 (y+1 1/8 )=6 11/12 <br> hewp quickly
madam [21]
If you’re solving for y it’s 7/10
5 0
3 years ago
Read 2 more answers
Which of the following is equivalent to –(–5.25) ? 5 5.25 –5 –5.25<br>please answer fast​
Marina86 [1]

Answer:

The equivalent to -(-5.25) = 5.25

Step-by-step explanation:

Given

-(-5.25)

We need to determine the equivalent to -(-5.25)

some of the sign rules are:

+(+) = +      

−(−) = +

+(−) = -

−(+) = -

Thus,

-(-5.25)

Applying the rule: -a(-a) = a

=5.25

Therefore, the equivalent to -(-5.25) = 5.25

5 0
2 years ago
Read 2 more answers
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