Which of these is not a gas? A. hydrogen B. gravity C. Oxygen D. heluim

Will mark brainliest26. which of these statements are true? (3 points)a. gases are compressibleb. gases fill their containers completelyc. the pressure of a gas is independent of the temperatured. gases have masse. gases exert pressuref. the pressure of a gas is dependent on the volumeg. gas pressure results from the collisions between gas particlesh. gases have a definite volume and shape

When a septic tank backs up a goes in to clean it out

What metric units would you use to measure the thickness of a key