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Lera25 [3.4K]
3 years ago
12

A perfect cube of aluminium metal was found to weigh 20.00g ,the density of the aluminium is 2.70g/ml ,what are the dimensions o

f the cube
Chemistry
1 answer:
steposvetlana [31]3 years ago
5 0

Answer:

1.95cm x 1.95cm x 1.95cm

Explanation:

20.00g / 2.70g/mL = 7.41 mL = 7.41 cm^3

∛7.41 = 1.95cm

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What happens when iron is placed in a solution containing copper ions?
alexgriva [62]

When an iron is dipped in Copper Sulphate

Solution this reaction between them and

copper sulphate change into blue color to light

green color. This show that iron is more

reactive then copper, it can to replace copper

from CuSO4 , CuSO4 is of blue color and

FeSO4 is light green color.

Hope it helps

8 0
4 years ago
discuss the origin of the line citing the bohr theory of the atom specify any energy transitions that are applicable
xeze [42]

Answer:

Niels Bohr states that the line spectrum of the hydrogen atom by assuming that the electron revolve in circular paths and that the paths  have an allowable radii. ...

Explanation:

discuss the origin of the line citing the bohr theory of the atom specify any energy transitions that are applicable

Niels Bohr states that the line spectrum of the hydrogen atom by assuming that the electron revolve in circular orbits and that orbits have an allowable radii. ... an absorption spectrum is produced, dark lines in the same position as the bright lines in the emission spectrum of an element are produced.

Bohr Atomic Model. Bohr Atomic Model : In 1913 Bohr proposed his quantized shell model of the atom to explain how electrons can have stable orbits around the nucleus. ... The atom will be stable in the state with the smallest orbit

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7 0
4 years ago
Lastly, Snape thinks we should try one more calculation.
EleoNora [17]

Answer:

E) 0.90

Explanation:

In TLC (Thin-Layer-Chromatography) retention factor RF is defined as the ratio between distance of the sample and the solvent front. RF is very important in chemistry to know the composition of any sample by comparison.

In the problem, as the sample has a distance of 0,20cm from the solvent front, the distance of the sample is:

2,0cm - 0,20 cm =<em> 1,8 cm</em>. Thus, RF is:

RF = 1,8cm / 2,0cm = 0,90

<em>E) 0,90</em>

<em />

I hope it helps!

3 0
3 years ago
lactic acid, which consists of C, H, and O, has long been thought to be responsible for muscle soreness following strenuous exer
Minchanka [31]

Answer:

C3H6O3

Explanation:

I got you babe

3 0
3 years ago
175 ml of a 1.6 m solution of kcl is diluted to a new volume of 1.0 l. what is the new concentration of the solution?
zhenek [66]

The new concentration of the KCl solution after mixing 1 L new volume is 0.28 M.

<h3>How do we calculate the concentration?</h3>

Concentration in terms of molarity will be calculated by using the below equation as:

M₁V₁ = M₂V₂, where

M₁ = molarity of old KCl solution = 1.6 M

V₁ = volume of old KCl solution = 175 mL = 0.175 L

M₂ = molarity of new KCl solution = ?

V₂ = volume of new KCl solution = 1 L

On putting all these values on the above equation, we get

M₂ = (1.6)(0.175) / (1) = 0.28 M

Hence resultant concentration is 0.28 M.

To know more about molarity, visit the below link:

brainly.com/question/24305514

7 0
2 years ago
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