Answer:
The expression for the number of moles is 5.0 g / 56 g/mol
Explanation:
The mole is the amount of substance that contains as many entities as there are carbon atoms in 12 grams of a carbon-12 isotope. It is the amount of a substance that contains the same number of units as the number of atoms in 12g of carbon - 12 isotope. A mole of an ionic substance contains 6.02 * 10^23 atoms of the element. Mathematically, moles is the mass of a substance in grams divided by the relative molecular mass.
Moles = mass / relative molecular mass
In the given question, mass = 5.0 g
Molecular mass of CaO ( Ca= 40, O = 16) = ( 40 + 16) g/mol = 56 g/mol
Moles = 5.0 g/ 56 g/mol is the expression for the number of moles in 5.0 g of CaO
PH = -log[H+] therefore lower pHs contain more H+ ions, so Jack's soup contains more free H+. Since pH is a logarithmic scale and Jack's soup has a pH of 2 less than Charlie's, it contains 10^2 = 100 times more H+ ions.
The condensed structure of given compounds are shown in the below image.
<h3>What is functional group?</h3>
Functional group is the specific group which is present in an organic compound gives information about the properties of that compound.
- In 1,2-propanediol compound hydroxyl functional group is present on the 1st and 2nd position.
- In Ethyl methyl ether, ether functional group is present.
- In Dichloromethane, two atoms of chlorine groups are present.
Hence, structure of the given compounds are shown in the below image.
To know more about functional group, visit the below link:
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Answer:
Yes
Explanation:
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