Answer:
<em><u>Percent volume-volume (%(v/v)) = 100 x (volume of solute / volume of solution)</u></em>
<em><u>Percent volume-volume (%(v/v)) = 100 x (volume of solute / volume of solution)ex. 20 ml of methanol dissolved in enough water to make 200 ml of solution would result in a 10 % methanol solution</u></em>
<em><u>Percent volume-volume (%(v/v)) = 100 x (volume of solute / volume of solution)ex. 20 ml of methanol dissolved in enough water to make 200 ml of solution would result in a 10 % methanol solution-the units may be any units of volume you chose - as long as they are consistent</u></em>
<em><u>Percent volume-volume (%(v/v)) = 100 x (volume of solute / volume of solution)ex. 20 ml of methanol dissolved in enough water to make 200 ml of solution would result in a 10 % methanol solution-the units may be any units of volume you chose - as long as they are consistent-this concentration unit is most often used when mixing two liquids</u></em>
Yes it is. the black ones are electrons as well
I can't answer this question because the problem is incomplete; no choices were given. Luckily, I found a similar problem from another website which I've attached as a picture down below. An ion-dipole bond results when one dipole molecule is present with an ion in the solution. Water is a dipole molecule. Now, CH₃OH, an alcohol, is a nonelectrolyte. It doesn't dissociate into ions when solvated. On the otherhand, Ca(NO₃)₂ dissociates into Ca²⁺ and 2 NO₃⁻ ions.
<em>Therefore, the answer is Ca(NO₃)₂.</em>