How many neutrons does an atom of al-27 have? (hint: look at the periodic table for the atomic number aluminum (al) 13 14 27 40 aluminum has the atomic number of 13?

Drag each description into the most appropriate bin. heterogeneous catalyst

A chemist is about to perform a titration by adding a base to an acid. what is the most important reason for using a base instead of water to rinse out the burette?

Why is it necessary to mix the solution very rapidly when the bleach is added?

Are there any molecules that form a square?

What do repeated trials in an experiment allow a scientist to do?

If a new substance is formed in a chemical reaction, what atoms do they consist of?

What is a scientific explanation for a range of hypotheses and observations supported by testing

A chemical reaction involves the rearrangement of atoms to form new molecules. During a chemical reaction, however, atoms are neither created nor destroyed. Which of the following is true about the atoms involved in a chemical reaction? A.

What is the new concentration, after diluting 300 mL of a 1.5 M LiCl solution to 1L

The answer that he gave was wrong