Which pair of compounds has the same empirical formula? (4 points) Group of answer choices

C2H6 and CH

CH3 and C2H6

C3H8 and C3H

C2H2 and C2H

Aballoon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon? a balloon inflated with three breaths of air has a volume of 1.7 l. at the same temperature and pressure, what is the volume of the balloon if five more same-sized breaths are added to the balloon?

Which type of bond is present in hydrogen sulfide (h2s)? the table of electronegativities is given. a. hydrogen b. ionic c. nonpolar covalent d. polar covalent

What layer of the atmosphere is directly above the troposphere?