The molar mass of Ca(ClO4)2 is 239.1 g/mol.
The molar mass of the following compounds in two decimal places are as follows:
- NH3: 17.04 g/mol
- Mg(OH)2: 58.33 g/mol
- Fe2O3: 159.70 g/mol
<h3>MOLAR MASS:</h3>
The molar mass of a compound is the sum of all the atomic masses of the elements that constitutes the compound.
According to this question, three compounds were given as follows: NH3, Mg(OH)2 and Fe2O3.
The atomic mass of the elements in this compounds are as follows:
- N = 14
- H = 1
- Mg = 24
- O = 16
- Fe = 56
- The molar mass of NH3 = 14 + 3 = 17g/mol
- The molar mass of Mg(OH)2 = 24 + 32 + 2 = 58g/mol
- The molar mass of Fe2O3 = 56(2) + 16(3) = 160g/mol
Learn more about molar mass at: brainly.com/question/12127540
Answer:
A
Explanation:
According to Coulomb's Law, like charges<u><em> repel </em></u>each other, whereas unlike charges<em><u> attract</u></em> each other. This applies to all charged particles.
When NaCl dissociates into its ions in water, we observe the following ions in the system:
<em>Na+ (positive)</em>
<em>Cl - (negative)</em>
<em>H+ (positive)</em>
<em>OH- (negative)</em>
The only correct option is A where the negatively charged oxygen atoms are attracted to the positively charged sodium atoms.
In option B the charge of the oxygen atom is incorrectly mentioned as positive. In option C, the charge of hydrogen atoms is incorrectly mentioned as negative, and in option D the charges of the atoms are correct, but the pairing is incorrect as like charges repel each other.
<h3>Hope this helps</h3>
Answer: A polar bond is a covalent bond between two atoms where the electrons forming the bond are unequally distributed. This causes the molecule to have a slight electrical dipole moment where one end is slightly positive and the other is slightly negative
Explanation:
For example like H & CL
