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erica [24]
3 years ago
8

Before Mendeleev, Newland observed a distinct pattern in the elements and proposed the law of octaves. What were his conclusions

?
Chemistry
2 answers:
zhuklara [117]3 years ago
5 0
WHILE ARRANGING THE ELEMENTS, NEWLAND OBSERVED THAT ORDER HE SET WERE LIKE NOTES REPRESENTED AS THE SIGNS,THAT IS, EVERY FIRST NOTE IS EQUAL TO THE EIGHT ELEMENT, BUT HE COULD FIND ONLY 58 ELEMENTS THAT WERE CORRECTLY ORDERED IN HIS TABLE
maksim [4K]3 years ago
4 0

Explanation:

Hello! We will answer this!

Newland was an English analytical chemist who ordered the elements of the periodic table according to their atomic masses.

He stated the law of the octaves, where he realized that every eight elements, the characteristics are similar.

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A solution is made by dissolving 9.74 g of sodium sulfate in water to a final volume of 165 mL of solution. What is the weight/w
MatroZZZ [7]

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}}

Mass of the water =1 g/mL\times 165 mL=165 g

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 \%

The weight/weight % or percent by mass of the solute is 5.41 %.


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How many protons, neutrons, and electrons are present in an atom of zinc, Zn, with a mass
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