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professor190 [17]
3 years ago
5

_______ was responsible for first grouping elements into triads based on similar properties.

Chemistry
2 answers:
frez [133]3 years ago
7 0
German scientist Döbereiner was one responsible for grouping elements into triads based on most notably atomic mass, many of which can be found in the periodic table to be in a pattern (for example <span><span>Iron </span><span>Cobalt </span><span>Nickel, elements 26, 27, 28)</span></span>
Sonja [21]3 years ago
4 0
I had the same answer A but I wanted to make sure
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How many moles of MgCl2 are there in 319 g of the compound?
Leokris [45]

Hey there!:

Molar mass MgCl2 = 95.2110 g/mol

So:

1 mole MgCl2 -------------- 95.2110 g

moles MgCl2 ---------------- 319 g

moles MgCl2 = 319 * 1 / 95.2110

moles MgCl2 = 319 / 95.2110

=> 3.350 moles of MgCl2


Hope that helps!

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3 years ago
100 points!! Brainliest if correct!!
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A 50.0 mL sample of 12.0 M HCl is diluted to 200 mL. What is true about the diluted solution?
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The concentration of the solution reduces and the number of moles of solute isn't affected.

Data;

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<h3>Facts about the diluted solution</h3>

1. When the solution is diluted, the concentration changes and this time, the concentration reduces.

Using dilution formula

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2. The number of moles remains the same.

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Learn more on concentration of a solution here;

brainly.com/question/2201903

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