3 years ago

Why is it important to do further investigations to determine if a chemical change really occurred?

1 answer:

5 0

Answer:

Explanation:

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Fed [463]

That would be 0.26 liters

Hope it help!

~Mqddie

6 0

3 years ago

Sloan [31]

Answer: The concentration of hydrogen ions for this solution is $1.99 \times 10^{-3}$ .

Explanation:

Given: pOH = 11.30

The relation between pH and pOH is as follows.

pH + pOH = 14

pH + 11.30 = 14

pH = 14 - 11.30

= 2.7

Also, pH is the negative logarithm of concentration of hydrogen ions.

$pH = - log [H^{+}]$

Substitute the values into above formula as follows.

$pH = -log [H^{+}]\\2.7 = -log [H^{+}]\\conc. of H^{+} = 1.99 \times 10^{-3}$

Thus, we can conclude that the concentration of hydrogen ions for this solution is $1.99 \times 10^{-3}$ .

4 0

3 years ago

ser-zykov [4K]

I believe this is a double replacement. As you can see none of the chemical symbols are missing, there just "replaced".

3 0

3 years ago

Usimov [2.4K]

I just took a quiz on this! It's D!

3 0

3 years ago

alisha [4.7K]

Well you didn’t post any but I’m hoping that either plastic, lead, wood, glass, or paper, are an option.

8 0

3 years ago