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Cerrena [4.2K]
1 year ago
11

In the gravimetric method, is it important that you dissolve your sample in exactly 10 ml of water? why or why not?.

Chemistry
1 answer:
alekssr [168]1 year ago
8 0

When utilizing the gravimetric method, it is crucial to completely dissolve your sample in 10 mL of water. A quantitative technique called gravimetric analysis employs the selective precipitation of the component under study from an aqueous solution.

A group of techniques known as gravimetric analysis are employed in analytical chemistry to quantify an analyte based on its mass. Gravimetric analysis is a quantitative chemical analysis technique that transforms the desired ingredient into a substance (of known composition) that can be extracted from the sample and weighed. This is a crucial point to remember.

Gravimetric water content (g) is therefore defined as the mass of water per mass of dry soil. To calculate it, weigh a sample of wet soil, dry it to remove the water, and then weigh the dried soil (mdry). Dimensions of the sample Water is commonly forgotten despite having a density close to one.

To know more about gravimetry, please refer:

brainly.com/question/18992495

#SPJ4

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iogann1982 [59]
For the following question(s), consider a 4% starch solution and a 10% starch solution separated by a semipermeable membrane.

Which of the following also occurs in this system?
There is a net flow of water from the 4% starch solution into the 10% starch solution
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3 years ago
Based on molecular orbital theory, the bond orders of the H—H bonds in H 2 , H 2 + , and H 2 - are _________, respectively
vodka [1.7K]

Answer:

H2-1

H2+-1/2

H22- zero

Explanation:

Bond order= Bonding electrons-antibonding electrons/2

In H2, there are two bonding electrons and no antibonding electrons. In H2+ there is only one bonding electron and no antibonding electron while in H22- there are two bonding and two antibonding electrons respectively.

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3 years ago
Calculate the wavelength of yellow light produced by a sodium lamp if the frequency of radiation is 3.34 x 10^14 Hz
max2010maxim [7]

Answer :  The wavelength of yellow light produced by a sodium lamp is, 8.98\times 10^{-7}m

Explanation : Given,

Frequency of radiation = 3.34\times 10^{14}Hz=3.34\times 10^{14}s^{-1}

conversion used : Hz=s^{-1}

Formula used :

\nu=\frac{c}{\lambda}

where,

\nu = frequency of radiation

\lambda = wavelength of radiation

c = speed of light = 3\times 10^8m/s

Now put all the given values in the above formula, we get:

3.34\times 10^{14}s^{-1}=\frac{3\times 10^8m/s}{\lambda}

\lambda=8.98\times 10^{-7}m

Therefore, the wavelength of yellow light produced by a sodium lamp is, 8.98\times 10^{-7}m

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3 years ago
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The question is: The pH of lemon juice at 298 K is found to be 2.32. What is the concentration of H3O (+) ions in the solution. So, you just have to use the formula pH = log { 1 / [H3O+] } = - log { [H3O+] }, from which you can solve for [H3O+] as: [H3O+] = 10 ^ (- pH) = 10 ^ (-2.32) = 0.00479 M = 4.79 * 10^ -3<span> Answer: 4.79 * 1 0^-3M</span>
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Answer:

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Explanation:

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