Answer: The weight/weight % or percent by mass of the solute is 5.41 %.
Explanation:
Mass of the sodium sulfate,w = 9.74 g
Volume of the water = 165 mL
Density of the water = 1 g/mL
![Density=1 g/mL=\frac{\text{Mass of water}}{\text{Volume of water}}](https://tex.z-dn.net/?f=Density%3D1%20g%2FmL%3D%5Cfrac%7B%5Ctext%7BMass%20of%20water%7D%7D%7B%5Ctext%7BVolume%20of%20water%7D%7D)
Mass of the water =![1 g/mL\times 165 mL=165 g](https://tex.z-dn.net/?f=1%20g%2FmL%5Ctimes%20165%20mL%3D165%20g)
Mass of the solution, W:
Mass of solute + Mass of solvent =9.47 g + 165 g=174.47 g
![w/w\%=\frac{w\times 100}{W}=\frac{9.45 g\times 100}{174.47 g}=5.41 \%](https://tex.z-dn.net/?f=w%2Fw%5C%25%3D%5Cfrac%7Bw%5Ctimes%20100%7D%7BW%7D%3D%5Cfrac%7B9.45%20g%5Ctimes%20100%7D%7B174.47%20g%7D%3D5.41%20%5C%25)
The weight/weight % or percent by mass of the solute is 5.41 %.
Carbon dioxide is created when hydrolic is mixed with calcium carbonate.
The correct answer to this question is the unique atomic number which would be B
Answer:
2-chloro-1-methyl-cyclohex-1,4-diene.
Explanation:
Hello,
In this case, the addition of hydrochloric acid acts as an electrophilic atack in which the hydrogen bonded to the double-bonded carbon connected to the carbon with the methyl substitution is substituted by the chlorine from the hydrochloric acid, in such a way, 2-chloro-1-methyl-cyclohex-1,4-diene is produced as one equivalent of HCl is used therefore one substitution will be attained for chlorine, and hydrogen as a side product as shown on the attached picture.
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A locating agent is needed in an experiment to separate amino acids by chromatography as it helps to analyze colorless substances on paper.
<h3>What is chromatography?</h3>
Chromatography is an analytical method frequently used to separate a chemical mixture into its components, allowing for in-depth analysis of each component.
There are many different types of chromatography including liquid, gas, ion-exchange, and affinity chromatography, but they all use the same basic principle.
<h3>What is the use of a locating agent in Chromatography?</h3>
In paper chromatography, colorless compounds are examined using a locating agent.
It is a chemical that combines with colorless substances to produce colorful compounds that are easy to see for analysis. Ninhydrin spray is an example of a locating agent of this type.
Thus, a locating agent is used in an experiment to separate amino acids by chromatography as it helps in determining colorless substances on paper.
Learn more about chromatography:
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