To understand the world we live in, we use mental models. What is the problem with mental models? (Select all that apply)

•They are personal

•They are incomplete

•They are idiosyncratic

•They are untestable

If you change peanuts into peanut butter is it a chemical or a physical change

A cylinder has a hight of 6 meters and a diameter that is 6 times the measure of the hight using 3.14 for pi which of the following can be used to calculate the volume of the cylinder 3.14) (36m) 2 (6m) (3.14) (18m) 2 (6m) (3.14) (6m) 2 (6m) (3.

A part of the periodic table is shown. A portion of the fifteenth and sixteenth columns of the periodic table is shown. Column 15 from top to bottom reads seven nitrogen, 15 phosphorus, and 33 arsenic.

Sterling silver is: A) a heterogeneous mixture B) colloid C) an element D) Homogeneous mixture

Nitrogen dioxide and water react to produce nitric acid, HNO3, and nitrogen oxide. 3NO2 + H2O - -> 2HNO3 + NO How many grams of NO are produced from 15.8 g of H2O?

How important is the resonance structure shown here to the overall structure of carbon dioxide? how important is the resonance structure shown here to the overall structure of carbon dioxide?

A farmer is analyzing cross sections of his land to determine where to build a well.

A drag racing vehicle travels from 0 to 100 mph in 5 seconds north. what is the acceleration

When dissolving a solid, what happens to the rate of dissolution while stirring the solution

What is the percent composition of sulfur compound that contains 20.8 g carbon and 54.4 g sulfur?