Carlos uses a machine to decrease his force Which of the following statements is true?

His total amount of work has decreased.

His machine must increase the distance the object moves. His machine must

decrease the distance the object moves.

Explain how exotic frog trafficking might put people at risk?

You have a spot of oil, which is nonpolar, on your favorite shirt. in which substance will the oil be most likely dissolve?

Pure acetic acid has a density of 1.049g / (ml). Calculate the molarity of a solution of acetic acid made by dissolving 20.00 ml in enough water to make 250.0 ml of solution

Which instrument would be used to measure the mass of a small stone? I 1. graduated cylinder 2. Celsius thermometer 3. triple-beam balance 4. metric ruler

In two or more complete sentences describe all of the van der Waals forces that exist between molecules of sulfur dioxide, SO2

Andy has two samples of liquids. Sample A has pH of 4, and sample B has a pH of 6. what can Andy conclude about these two samples? Sample A is a neutral b alkali c acidic Sample B is a neutral b alkali c acidic

How does a lone pair contribute to molecular shape? A. It is too small to affect the molecule's shape. B. It takes up space like an "invisible" atom. C. It forces the molecule into a tetrahedral shape. D. It lets the bonding pairs spread out more.

The are of a rectangle is 12 in^2. what is the area in cm^2. there are 2.54cm in an inch.

Which statements describe advantages of models? Check all that apply. Models make it possible to easily notice patterns. Models can be used to communicate and test design ideas. Models allow scientists to predict relationships.

Are energy levels and orbitals the same thing?