State the 4 major ideas of Dalton's Atomic Theory.

How much work is done by a person pushing a cart 20 meters with a force of 50N 8:An electric hoist does 500 joules of work lifting a box 2 meters, how much force does the hoist use If you push on a solid brick wall with a force of 100N how much work

Explain the formation and movement of sand dunes.

Whats the answer i need to know to get my paper done and if i don't get done i will fail chemistry.

The chemical formula for the compound strontium sulfide, which contains Sr2 + and S2 - ions, is

Basic substances have a gritty texture. TRUE FALSE A substance is added to pure water and the concentration of aqueous H + ions increases. What kind of substance has been added to the water? an acid a base water either an acid or a base

What do chemists use to describe a chemical reaction

When you drop a sugar cube in a glass of water, at first the water doesn't taste sweet. Later, it tastes very sweet. Eventually, the water will taste equally sweet throughout. What term explains molecule movement to maintain a balance?

Using density what is the mass in grams of 150mL of a liquid with a density of 1.4 g/mL

All of the following can be recycled except clothing aluminum cans compact fluorescent bulbs plastic drink bottles

Use Henry's law and the solubilities given below to calculate the total volume of nitrogen and oxygen gas that should bubble out of 1.0 L of water upon warming from 25 ∘C to 50 ∘C.