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Lisa [10]
4 years ago
6

Explain why we used sodium bicarbonate in our solution

Chemistry
1 answer:
LUCKY_DIMON [66]4 years ago
4 0

El bicarbonato puede ser determinado mediante una volumetría ácido-base. Puedes consultar el procedimiento en el método AOAC Official Method 920.194 Carbonate and Bicarbonate in Water.

Realmente, el bicarbonato en función del pH del medio puede encontarse como carbonato, bicarbonato o ácido carbónico. Para su determinación puede realizarse la valoración utilizando dos indicadores. En la figura se muestra la forma de la curva de valoración de una base diprótica con un ácido fuerte.

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The balance you used for weighing the metal strip does not zero properly, and consequently, all of your mass measurements are hi
laila [671]

The  experimental value of Avogadro's number will be ±0.050.

<h3>What is the degree of accuracy?</h3>

The degree of accuracy refers to the extent to which a measurement is correct. Now we know that the measurement obtained by an instrument is as correct as its degree of accuracy.

Hence, given that the margin of error is about 0.050, the  experimental value of Avogadro's number will be ±0.050.

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8 0
2 years ago
Isotope what dose it mean
Sergio039 [100]

Answer:

each of two or more forms of the same element that contain equal numbers of protons but different numbers of neutrons in their nuclei, and hence differ in relative atomic mass but not in chemical properties; in particular, a radioactive form of an element.

"some elements have only one stable isotope"

Explanation:

6 0
3 years ago
In the molecule Br2, how many bonds would be present between the two atoms of Br
Evgesh-ka [11]

Answer:

The correct answer is A) single

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In the case of the Bromo atom, it requires 1 electron to complete its octet, therefore it shares 1 electron with the other Bromo atom.

8 0
3 years ago
2. What are the names of the products when you mix an equal strength acid and alkali
dexar [7]
I think the answer is water and hydrochloric acid
8 0
3 years ago
How many grams are there in 9.4x10^25 molecules of H2
Arisa [49]

Answer:

You start with 9.4 x 1025 molecules of H2.

You know that an Avogadro's number of molecules of H2 has a mass of 2.0 g.

To solve, 9.4 x 1025 molecules H2 x (2.0 g H2 / 6.023 x 1023 molecules H2) = 312. g H2

Explanation:

7 0
3 years ago
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