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makkiz [27]
3 years ago
11

Plzz help me with these questions....!!!

Chemistry
1 answer:
exis [7]3 years ago
7 0

Answer:-

1) The pH of sodium bicarbonate will be around 8 as it is slightly basic. So the color will be blue.

2) The correct method for finding the pH of a solution is to use a dropper and drop wise add the solution to the pH paper lying on a glass tile. Hence the answer is 3.

3) HCl is an acid. The pH of HCl should be 1-2. NaOH is a base. It’s pH should be around 13-14.

KCl is a salt of a strong acid and strong base. It should have pH near 7. Distilled water has pH of 7. So the solutions with equal pH are KCl and distilled water. So the answer is number 4 (B and D).

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Answer:

True

Explanation:

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At which volume of base added was all the acid neutralized?
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Answer: The answer is A

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Scientific argumentation makes scientific results. A) stronger. B) invalid . C) permanent. D) biased
Vlad1618 [11]
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3 0
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Given the balanced ionic equation: 2Al(s) + 3Cu2+(aq) → 2Al3+(aq) + 3Cu(s) Compared to the total charge of the reactants, the to
ryzh [129]

Answer:

3.- The same

Explanation:

1.- In the reactants you need to calculate the charges that you have:

2 Al(s) = zero, because the aluminum is in it based formed (that mean without charge).

3 Cu2+ = 3 x 2+ = 6+ That is the total positive charges that copper collaborate in this reaction.

2.- Then calculate the charges on the products:

2 Al3+ = 2 x 3+ = 6+ charges from the aluminum.

3 Cu(s) = zero, because the copper in this case is in the base form

3.- In this way, the charges at the begging (6+) and at the end (6+) are the same.

4 0
3 years ago
A sample of nitrogen gas occupies 1.55 L at 27.0 degrees celsius and 1.00 atm. What will the volume be at -100.0 degress celsius
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Explanation:

8 0
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