Which gases each make up less than 1 percent of Earth's atmosphere? Select three options.

argon

oxygen

nitrogen

water vapor

carbon dioxide

What do the elements in the oxygen family (group 16) have in common

How is iodine bad for human health?

What is the single temperature in degrees Celsius which has the same magnitude in degrees Fahrenheit?

The equilibrium constant, Kp = 3.4 for the isomerization reaction:cis-2-butene ⇌ trans-2-butene. If a flask initially contains 0.25 atm of cis-2-butene what is the equilibrium pressure (atm) for trans-2-butene?

a helium balloon has a volume of 2.95 liters at 25 c. the volume of the ballon decreased to 2.25 l after it is placed outside on a cold day. what is the outside temperature in c?

What are the chemical formulas for ... Heptasulfur Pentoxide: Trisulfur Monochloride: Selenium Hexafluoride: Tetranitrogen Pentasulfide: Carbon Nonachloride: ?

Write an equation for the reaction of hydrogen chloride and sodium sulfide to produce hydrogen sulfide with sodium chloride. 1. Show the formulas of the reactants 2. Show the formulas of the products. 3. Write the balanced equation for this reaction

Martha has a large amount of 1.25 M H2SO4 in her lab. She needs 36 grams of H2SO4 for a chemical reaction she wants to perform. How many liters of solution should she use?

A student makes observations when water is added to a blue solution of copper sulfate. The student makes only 1 observation: the solution changes to a lighter shade of blue. Is this an example of a chemical reaction? Explain your reasoning.

When dos the spring tide occur