Answer: all of those are the right choices. :) promise
Explanation:
Answer:
(A) II only
Explanation:
<em>If a compound has a number of individual dipoles, then:
</em>
<em>
(I) It is polar overall.</em> FALSE. If the individual dipoles cancel each other (as it happens in a symmetrical molecule), the net dipole moment is zero.
<em>(II) There is an electronegativity difference between the bonded atoms.
</em> TRUE. If the difference in electronegativity between the elements is higher than zero and lower than 1.7, the bond is polar covalent.
<em>(III) it is ionic.</em> FALSE. If there is a number of individual dipoles, the bonds are most likely to be covalent.
<em>(IV) It doesn't have resonance.</em> FALSE. There is no relation between the resonance and the polarity of the bonds.
Answer:
1.13 M.
Explanation:
- Molarity (M) is defined as the no. of moles of solute dissolved in a 1.0 L of the solution.
<em>M = (no. of moles of luminol)/(Volume of the solution (L).</em>
<em></em>
∵ no. of moles of luminol = (mass/molar mass) of luminol = (15.0 g)/(177.16 g/mol) = 0.085 mol.
Volume of the solution = 75.0 mL = 0.075 L.
∴ M = (no. of moles of luminol)/(Volume of the solution (L) = (0.085 mol)/(0.075 L) = 1.13 M.
The answer to your question will be an Atom of Calcium
