Using a spring as an example, explain the compressions and rarefactions of

a wave.

100 g of radioactive mass has a half life of 5 days Calculate the mass decayed off after 15 days

Calculate the molality of the solution. (assume a density of 1.08 g/ml for the solution.) an aqueous nacl solution is made using 140 g of nacl diluted to a total solution volume of 1.20

Zinc bromide formula

Write balanced ionic equations and net ionic equations for the following reactions. Aqueous sulfuric acid is neutralized by aqueous potassium hydroxide. Express your answer as an ionic equation. Identify all of the phases in your answer.

A cough medicine has 17.5% active ingredient. if the dose is 5 mL, how much of the dose is active ingredient?

Allows water to pass through easily

Which is a cause of desertification? A. farming B. creating reservoirs C. overgrazing D. driving motor vehicles

What happens when the threat of exposure to dirty air is reduced in a community? There is enough oxygen available for people's lungs to function normally The amount of indoor air pollutants released during a fossil fuel burn decreases There is a

Is chicken noodle soup an element, a compound, a homogeneous mixture, or a heterogeneous mixture?

How is the amount of sunlight affect the makeup of an ecosystem