Which sample is a pure substance?

In the Chemical formula H 2o which description explains what the two represents

What does quantum mechanics describe about the e-?

Which describes a step in the process of forming an ionic bond? Ametal atom loses electrons and becomes a positive ion. A metal atom gains electrons and becomes a negative ion. Anonmetal atom loses electrons and becomes a negative ion.

8) what is the empirical formula for ethyl fluoride if the compound contains 49.97% carbon, 10.51% hydrogen, and 39.52% fluorine by mass?

As you dig down into the ground, you see water at the bottom of the hole. This is a sign you've found what? A. a cave B. the water table C. karst topography D. an underground stream

Difference between radical and compound

Water is a produced when 30.0 grams of hydrogen reacts with 80.0 grams of oxygen what is the limiting reagent

How are reactions and products related in a chemical reaction?

Ollie wants to sign up with an online social network called TeensMeet, which other kids at school have joined.

7. A perfect cube has a width of 2 cm. What is the cube's volume? Show your work!