What would happen if you took a lid off of a jar of helium

The city council is considering discussing whether or not to put fluoride in the city's water supply. Many other towns add it already, but your town wants to research the topic before they make a decision.

Which one of the following is a double-displacement reaction? ~There can be more then one answer~ A. 2H2 (g) + O2 (g) → 2H2O (g) B. 2H2O (l) → 2H2 (g) + O2 (g) C. NaOH (aq) + HCl (aq) → NaCl (aq) + HOH (l) D.

2. Which of the following is an example of acceleration. A. a twirling ballerina B. a car on a cruise control going 50 m/s east C. Mrs. Crisp sliding on the gym floor at + 2.23 m/s D. A remote control car traveling at a constant rate 5 m/h

You are a sales representative for a company that makes a new alternate fuel for vehicles. You have prepared a presentation for the environmental engineers to sell your new product.

What is diffuse and specular scattering

What about a rubber band, can it change its shape? Is it a solid?

Which two subatomic particles have approximately the same mass

A blank tells you what the different symbols and lines represent on a map

How well would a piece of hot metal heat the cool water?

Explain the difference between work and power.