If one person can clean a house in 5 hours and the second person can clean the same house in 4 hours, how long would will it take to clean the house if they worked together?

What is the percentage of hydrogen in c2h4

What element has similar physical and chemical properties as boron.

Complete the sentences to best explain the ranking.match the words below to the appropriate blanks in the sentences.a less polar bondhigher molar massion-dipole forcesstronger intermolecular forcesdipole-dipole forcesdispersion forceshydrogen bonding1. h2s and h2se exhibit the following intermolecular forces:.2. therefore, when comparing h2s and h2se the one with a has a higher boiling point .3. the strongest intermolecular force exhibited by h2o is . therefore, when comparing h2se and h2o the one with has a higher boiling point.