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Mekhanik [1.2K]
4 years ago
7

Using eq. 7: calculate the buffer capacity (BC) of your buffer solution before and after dilution with water, and enter the valu

es obtained below. Remember that before dilution the water volume in the flask was 25 mL. After dilution, the volume was 35 mL. The number of moles of weak acid and conjugate base will depend on the amounts added to the flask. You're weak acids molar mass is 234 and that of the conjugate base is 256.

Chemistry
1 answer:
alexdok [17]4 years ago
4 0

Answer:

0.1256 - before dilution

0.0897 - after dilution

Check attachment for calculation

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Vsevolod [243]

Answer:

At a front, the two air masses have different densities, based on temperature, and do not easily mix. One air mass is lifted above the other, creating a low pressure zone.

Explanation:

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4 0
3 years ago
What is the name of the alkane having five carbons?
Tatiana [17]

Explanation:

Alkanes are the simple hydrocarbons that have only carbon and hydrogen atoms attached to each other through single bonds.

General chemical formula of an alkane is C_{n}H_{2n+2}, where n is any integer.

For example, if n = 5 then formula of the alkane will be as follows.

                                C_{n}H_{2n+2}

                             = C_{5}H_{2(5)+2}

                             = C_{5}H_{12}

A suffix "-ane" is added in the name of an alkane. So, an alkane with five carbon atoms will be known as pentane.

7 0
3 years ago
Read 2 more answers
Race car <br> Mass is 1250 kilograms <br> Velocity is 2.3 m/s <br> What is the momentum?
dalvyx [7]

mass \: of \: the \: car \:  = 1250 \: kg \\  \\ velocity \: of \: the \: car \: is \:  = 2.3m/s \\  \\ formula \: to calculate \: momentum \:  \\  \\  \:  \:  \:  \: p = mv \:  \:  \: (m = mass \: and \: v = velocity) \\  \\ momentum \:  = 1250 \times 2.3 = 2875m/s

8 0
3 years ago
PLEASE HELP ME I HAVE NO IDEA “Heat (thermal) energy is being applied to the substance whenever the Bunsen Burner is on. Before
svetlana [45]

TLDR: The energy was being used simply to heat the substance up.

Whenever something melts, it performs what is called a "phase transition", where the state of matter moves from one thing to something else. You can see this in your iced drink at lunch; as the ice in the cup of liquid heats up, it reaches a point where it will eventually "change phase", or melt. The same can be achieved if you heat up that water enough, like if you're cooking; when you boil eggs, the water has so much thermal energy it can "change phase" and become a gas!

However, water doesn't randomly become a boiling gas, it has to heat up for a while before it reaches that temperature. For a real-life example, the next time you cook something, hold you hand above the water before it starts boiling. You'll see that that water has quite a high temperature despite not boiling.

There's a lot of more complex chemistry to describe this phenomena, such as the relationship between the temperature, pressure, and what is called the "vapor pressure" of a liquid when describing phase changes, but for now just focus on the heating effect. When ice melts, it doesn't seem like its heating up, but it is. The ice absorbs energy from its surroundings (the warmer water), thus heating up the ice and cooling down the water. Similarly, the bunsen burner serves to heat up things in the lab, so before the solid melts in this case it was simply heating up the solid to the point that it <u>could</u> melt.

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5 0
4 years ago
What elements are in NaC2HO4 and how many atoms are in each element​
JulijaS [17]

Answer:

Each molecule contains one atom of A and one atom of B. The reaction does not use all of the atoms to form compounds.

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Particles: 6      8              6

If six A atoms form six product molecules, each molecule can contain only one A atom.

The formula of the product is ABₙ.

If n = 1, we need six atoms of B.

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Thus, 6A + 6B ⟶ 6AB, with two B atoms left over.

Explanation:

Credit goes to @znk

Hope it helps you :))

7 0
3 years ago
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