Rhonda watched a video taken by a camera that was lifted into the upper atmosphere by a weather balloon. she saw the balloon pop when it reached a certain height. afterward, rhonda wondered what effect the air pressure at high altitudes has on the volume of gas in balloons.

what scientific practice is rhonda performing?
asking a question
providing explanations
communicating results
performing an investigation

Asolution contains 225 g of sodium chloride, nacl, dissolved in enough water to make a 0.25 l of solution. what is the molarity of the solution?

What is the correct equation for cellular respiration?

Ageochemist examines a piece of metal that he found in the soil. he performs tests to identify the metal from its density, electrical conductivity, and melting point. which statement best describes his investigation? a. he is determining physical properties that are sufficient to identify the metal. b. he is determining chemical properties that are sufficient to identify the metal. c. he is determining physical properties that are insufficient to identify the metal. d. he is determining chemical properties that are insufficient to identify the metal.