I think the correct answers from the choices listed above are the first, third and the last option. Ionic compounds are compounds that dissociates into ions when in aqueous solution. From the list, NH4Cl, KF and MgO are the ionic compounds. Hope this answers the question.
.50 M KCl because 5% is the same as .05, which makes the .50M more concentrated.
Opposites attract, like for example magnets, one is positive and the other is negatively charged, they will attract
Answer:
Quantitative observation is an objective collection of data which is primarily focused on numbers and values.
Cumulene is an alkene hydrocarbon that has two or three double bonds. It is also known as allene. The simplest cumulene is butatriene. It is a rigid hydrocarbon due to the presence of double bonds.
Answer: The orbital that overlap are p/p overlap, s/sp2 overlap, sp/sp2 overlap and sp/sp orbital.