N2 + 3H2 2NH3 How many molecules of H2 are in the reaction? molecules How many nitrogen atoms are present? atoms How many moles of NH3 are formed? moles

What 2 molecules make up the sides of dna?

One of the starting substances (ingredients) that is involved in a chemical reaction

Which ocean environment changes the most? intertidal zzone deep ocean river basin open ocean

How can you use knowledge of a minerals chemical makeup or use? A: To determine how to break down minerals B: To determine the color of the minerals C: To classify minerals D: To identify minerals

A way measurable or visible way of describing something

Why do they put flexible connections in the road on a bridge? Put it into five complete sentences

Why should you avoid wearing baggy clothes in the lab?

A student performs the following procedure: Procedure 1. Measure 25 grams of an unknown solid. 2. Measure 200 grams of water. 3. Pour the unknown solid and water into beaker, which weighs 50 grams. 4. Stir the solution.

When water is warm it will: * allow for solids and gases to dissolve easier make it harder for solids and gases to easily dissolve allow for gases to dissolve easier, but make it harder for solids to dissolve allow for solids to dissolve easier, but

If you drink at 2am can you pass a drug test at 6pm