Which type of matter is composed of two or more elements that are chemically combined in a fixed proportion

Explain why it is harder to remove an inner shell electron than a valence electron from an atom?

A gas cylinder contains exactly 15 moles of oxygen gas (O2). How many molecules of oxygen are in the cylinder? 4.01 * 1022 molecules 6.02 * 1023 molecules 9.03 * 1024 molecules 2.89 * 1026 molecules

Has a hydrogen atom held in a polar bond when it is part of a carboxyl group called

Nitrogen combines with oxygen to form several different compounds: N2O, NO, NO2, and N2O5. Determine the gram equivalent weight of nitrogen in each compound. Show how these compounds illustrate the Law of Multiple Proportions.

how would use a similar chemical shorthand to write a representation of the molecules of iodine and fluorine

How can I balance this equation __NH4NO3->__N2+__H2O

If a plane is traveling300 mph how long will it take to travel 1800 miles

How do you get friends

Determine the number of grams of NaCl necessary to make up 100 mL of a 0.10 M solution. 0.017 g 0.58 g 1.7 g 58 g

What causes an increase in the average global temperature?