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balandron [24]
2 years ago
8

Ms. Salis explains to her class that sodium (Na) and chlorine (Cl) atoms bond to make table salt

Chemistry
1 answer:
larisa [96]2 years ago
6 0
The answer is D a compound :)
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Enter your answer in the provided box. Calculate the number of moles of CrCl, that could be produced from 49.4 g Cr202 according
Mrrafil [7]

Answer:

0.4694 moles of CrCl₃

Explanation:

The balanced equation is:

Cr₂O₃(s) + 3CCl₄(l) → 2CrCl₃(s) + 3COCl₂(aq)

The stoichiometry of the equation is how much moles of the substances must react to form the products, and it's represented by the coefficients of the balanced equation. So, 1 mol of Cr₂O₃ must react with 3 moles of CCl₄ to form 2 moles of CrCl₃ and 3 moles of COCl₂.

The stoichiometry calculus must be on a moles basis. The compounds of interest are Cr₂O₃ and CrCl₃. The molar masses of the elements are:

MCr = 52 g/mol

MCl = 35.5 g/mol

MO = 16 g/mol

So, the molar mass of the Cr₂O₃ is = 2x52 + 3x35.5 = 210.5 g/mol.

The number of moles is the mass divided by the molar mass, so:

n = 49.4/210.5 = 0.2347 mol of Cr₂O₃.

For the stoichiometry:

1 mol of Cr₂O₃ ------------------- 2 moles of CrCl₃

0.2347 mol of Cr₂O₃----------- x

By a simple direct three rule:

x = 0.4694 moles of CrCl₃

6 0
3 years ago
Four animals were fleeing from a wildfire. All of them were running at a speed of 30 miles per hour. Which one has the greatest
RUDIKE [14]

Answer: I don’t know lol

Explanation:  I am so sorry I thought this was easy

6 0
3 years ago
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The four elements that make up about 96% of body matter are ________.
AveGali [126]

An element is a pure substance that cannot be separated or divided into simpler substances by any method (physical or chemical). The four common elements in all the living organisms are carbon, oxygen, hydrogen, nitrogen.

Thus, the four elements that make up about 96 % of body matter are carbon, oxygen, hydrogen, nitrogen (c).

4 0
2 years ago
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Chromium (Cr) can combine with chlorine (Cl) to form chromium chloride (CrCl3).
lisov135 [29]
2 Cr + 3 Cl2 ------> 2CrCl3
7 0
3 years ago
CuCl2 + NaNO3 -------> Cu(NO3)2 + NaCl
pav-90 [236]

Answer:

what

Explanation:

3 0
3 years ago
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