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3 years ago

Which process of a volume of solution of known concentration to determine the concentration of another solution

Chemistry

1 answer:

Mila [183]3 years ago

3 0

Answer: Titration

Explanation:

Titration is a method of quantitative analysis, by which a student, with standard volumetric equipment, burettes, and pipettes, can achieve very precise, and accurate results. It is also known as

volumetric analysis

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Suppose you had a mixture of 1 moles of methanol and 1 mole of ethanol at a particular temperature. The vapor pressure of pure m

Natasha_Volkova [10]

The total pressure is given by:
P = ∑xiPi
P = 1/2 x 81 + 1/2 x 45
P = 63 kPa

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3 years ago

3. How do plants benefit from human respiration?

klasskru [66]

The answer is C

Why:
A - this is natural
B - water is natural
D - this is also natural
C- this is right because when we breathe out we produce more carbon dioxide then we breathed in.

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3 years ago

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10) The presence of nitrates in soil can be shown by warming the soil with

tresset_1 [31]

Answer:

ammonia

Explanation:

Nitrogen fertilizers contain N in the forms of ammonium, nitrate and urea. Upon application to the soil, urea-N rapidly hydrolyzes to ammonia, thus it shares similar characteristics as ammonia-based N fertilizers.

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2 years ago

Natasha_Volkova [10]

Answer:

Explanation:

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3 years ago

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A gas mixture contains oxygen, nitrogen, and carbon dioxide. It has a pressure of 250 mmHg. If the pressure of oxygen is 50 mmHg

kondor19780726 [428]

Answer:

$P_{CO_2}=25mmHg$

Explanation:

Hello there!

In this case, according to the Dalton's law, which explains that the total pressure of a gaseous system equals the sum of the partial pressures of the gases composing, for the gaseous mixture composed by oxygen, nitrogen and carbon dioxide it would be possible to write:

$P_{tot}=P_{N_2}+P_{O_2}+P_{CO_2}$

Now, given the pressure of the system and those of oxygen and nitrogen, we calculate that of carbon dioxide as shown below:

$P_{CO_2}=P_{tot}-P_{N_2}-P_{O_2}\\\\P_{CO_2}=250mmHg-50mmHg-175mmHg\\\\P_{CO_2}=25mmHg$

Best regards!

4 0

3 years ago