Imagine you are one of the bystanders in picture 1 below. As you watch the red bus drive by, explain what you are using as a reference point to determine its motion
past you.
Can some write something out please help I offer it 30 points

An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid

Smog is the term used to describe the combination of fog and smoke

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?