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inysia [295]
3 years ago
9

Which of the following can be mixed in solution with H2CO3 to make a buffer?

Chemistry
1 answer:
Temka [501]3 years ago
8 0

Answer:

Sodium hydroxide solution.

Explanation:

because it is a strong base. Since carbonic acid is a weak acid, a solution formed resists change in pH on addition hence buffer formed.

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A sealed reaction vessel initially contains 1.113×10-2 moles of water vapor and 1.490×10-2 moles of CO(g).
Molodets [167]

Answer:

Kc =\frac{[8.326x10-3]^{1} }{[1.113x10-2]^{1}[1.490x10-2]^{1}  }

Kc = 50.2059

Explanation:

1. Balance the equation

2. Use the Kc formula

Remember that pure substances, like H2 are not included on the Kc formula

4 0
3 years ago
Which of the following is likely to have the lowest viscosity? hot oil room temperature oil room temperature water below room te
zzz [600]

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andreyandreev [35.5K]

Answer:

In advance

middle

lower

Explanation:

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When planning and preparing to work in a fume hood (a locally designed area to reduce exposure to hazardous fumes). It is advisable to make all equipment readily available at your disposal <u>in advance</u> to reduce and minimize the raising and lowering of the hood sash at intervals.

It is also pertinent to understand that working in the<u> middle </u>of the work surface helps to promote the movement of air and keeps the area neat and tidy.

However, if any case where there is a need to get a new tool or equipment during the process of working in a fume hood, it is advisable to <u>lower </u>the sash at that point in time.

5 0
3 years ago
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Tpy6a [65]

Answer:

<em><u>The answer is</u></em>: <u>False.</u>

<u />

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3 0
3 years ago
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Tanya [424]
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