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OleMash [197]
2 years ago
5

Freé point

xFormula1" title=" \: \: \: \: \: \: " alt=" \: \: \: \: \: \: " align="absmiddle" class="latex-formula">
​
Chemistry
2 answers:
gladu [14]2 years ago
5 0

Answer

Tq so much.

Pls follow me and Mark as brainliest Plsssssssss

Leya [2.2K]2 years ago
4 0

Answer:

Thank you so much.

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What are the three main particles in the modern model of an atom
EastWind [94]
Protons and neutrons in the nucleus (the bit in the middle) and small tiny electrons that orbit the nucleus
7 0
3 years ago
What is the mass in grams of a pure iron cube that has a volume of 4.60 cm3
yuradex [85]
In order to determine the mass of a substance given the volume, we require the density. The density of iron is 7.87 grams/cm³

Now,

Density = mass / volume

Mass = density * volume

Mass = 7.87 * 4.6

36.2 grams of iron are present in the cube
5 0
3 years ago
20.0 g of bromic acid, HBrO3, is reacted with excess HBr.
Blababa [14]

After Rounding off The percentage yield is 64%

<h3>What is Percentage Yield ?</h3>

It is the ratio of actual yield to theoretical yield multiplied by 100% .

It is given in the question

20.0 g of bromic acid, HBrO3, is reacted with excess HBr.

The reaction is

HBrO₃ (aq) + 5 HBr (aq) → 3 H₂O (l) + 3 Br₂ (aq)

Actual yield = 47.3 grams

Molecular weight of Bromic Acid is 128.91 gram

Moles of Bromic Acid = 20/128.91 = 0.155 mole

Mole fraction ratio of Bromic Acid to Bromine is 1 :3

Therefore for 0.155 mole of Bromic Acid 3 * 0.155 = 0.465 mole of Bromine is produced.

1 mole of Bromine = 159.8 grams of Bromine

0.465 of Bromine = 74.31 grams of Bromine

Percentage Yield = (47.3/74.31)*100 = 63.65 %

After Rounding off The percentage yield is 64% .

To know more about Percentage Yield

brainly.com/question/22257659

#SPJ1

5 0
1 year ago
1. A rock with a mass of 66.5g<br>occupies 23.0 cm. Density?​
telo118 [61]

Answer:

2.89 g/cm^3

Explanation:

Since density equals mass over volume (or also seen as d=\frac{m}{v} ), simply divide 66.5 grams by 23.0 cm. This will output an answer of 2.89 g/cm^3.

7 0
3 years ago
Geologists may choose to lick a mineral to identify it. What mineral is the geologist expecting with this test?
Archy [21]
<span>NaCl (halite) or KCl (sylvite) </span>
8 0
3 years ago
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