The mass in grams of 8.94×10²² formula units of CuF₂ is 15.07 g
<h3>Avogadro's hypothesis </h3>
6.02×10²³ formula units = 1 mole of CuF₂
But
1 mole of CuF₂ = 101.5 g
Thus,
6.02×10²³ formula units = 101.5 g of CuF₂
<h3>How to determine the mass of 8.94×10²² formula units of CuF₂</h3>
6.02×10²³ formula units = 101.5 g of CuF₂
Therefore,
8.94×10²² formula units = (8.94×10²² × 101.5 ) / 6.02×10²³
8.94×10²² formula units = 15.07 g of CuF₂
Thus, 8.94×10²² formula units are present in 15.07 g of CuF₂
Learn more about Avogadro's number:
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Solutions of acids and bases are good conductors of electricity because they are capable carrying current. Solutions of such substances have ions in the solution which can carry current through out the solution. Hope this answers the question.
8 valence electrons means that the element is stable. When we hear stable, we know the group to look at! Noble gases all have 8 valence electrons making them stable and have a full octet.
Here are some:-
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Neon
Answer:
The density of the nugget is 19.3g/cm³
It is gold because all samples of gold will have the same density value
You should buy it.
Explanation:
Given parameters:
Density of gold = 19.3g/cm³
Length on all sides = 5cm
Mass in kg = 2.413kg
Unknown:
Density = ?
Is it gold = ?
Should you buy it = ?
Solution:
To solve this problem, we need to find the density of the nugget first.
Density =
Mass = 2.413kg
We need to convert to g:
1kg = 1000g
2.413kg = 2413g
Volume = L³ = 5³ = 125cm³
Therefore;
Density = = 19.3g/cm³
The density of the nugget is 19.3g/cm³
It is gold because all samples of gold will have the same density value
You should buy it.