Answer:
The answer to your question is 16 g
Explanation:
Data
Percent by mass = 8%
Mass of the solution = 200 g
Mass of solute = ?
Formula
Percent by mass = mass of solute / mass of solution x 100
- Solve for mass of solute
Mass of solute = Percent by mass x mass of solution / 100
- Substitution
Mass of solute = 8 x 200 / 100
- Simplification
Mass of solute = 1600 / 100
- Result
Mass of solute = 16 g
Sodium
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Answer:
The three specific cone cells in our eyes work together, allowing us to translate these three colors of light into millions of different colors. ... When green and blue light are combined, they make cyan. Red and green light make yellow. And when all three primary colors of light are combined, we see white light.
Explanation:
Answer : The molecular formula of benzoyl peroxide is ![C_{14}H_{10}O_4](https://tex.z-dn.net/?f=C_%7B14%7DH_%7B10%7DO_4)
Explanation :
Empirical formula : It is the simplest form of the chemical formula which depicts the whole number of atoms of each element present in the compound.
Molecular formula : it is the chemical formula which depicts the actual number of atoms of each element present in the compound.
For determining the molecular formula, we need to determine the valency which is multiplied by each element to get the molecular formula.
The equation used to calculate the valency is :
![n=\frac{\text{Molecular mass}}{\text{Empirical mass}}](https://tex.z-dn.net/?f=n%3D%5Cfrac%7B%5Ctext%7BMolecular%20mass%7D%7D%7B%5Ctext%7BEmpirical%20mass%7D%7D)
As we are given that the molar mass of compound is, 0.242 kg/mol.
Molecular mass = 0.242 kg/mol = 242 g/mol (1 kg = 1000 g)
The empirical mass of
= 7(12) + 5(1) + 2(16) = 121 g/eq
![n=\frac{\text{Molecular mass}}{\text{Empirical mass}}](https://tex.z-dn.net/?f=n%3D%5Cfrac%7B%5Ctext%7BMolecular%20mass%7D%7D%7B%5Ctext%7BEmpirical%20mass%7D%7D)
![n=\frac{242}{121}](https://tex.z-dn.net/?f=n%3D%5Cfrac%7B242%7D%7B121%7D)
![n=2](https://tex.z-dn.net/?f=n%3D2)
Molecular formula =
=
= ![C_{14}H_{10}O_4](https://tex.z-dn.net/?f=C_%7B14%7DH_%7B10%7DO_4)
Thus, the molecular formula of benzoyl peroxide is ![C_{14}H_{10}O_4](https://tex.z-dn.net/?f=C_%7B14%7DH_%7B10%7DO_4)
Elements combine<span> to </span>form<span> chemical </span>compounds<span> that are often divided into two categories. Metals often react with nonmetals to </span>form<span> ionic </span>compounds<span>. These </span>compounds<span> are composed of positive and negative ions formed by adding or subtracting electrons from neutral atoms and molecules.</span>