What is the mass number of an alpha particle?

(1) 1 (3) 0

(2) 2 (4) 4

Why do people say "weight" even though it is more accurate to say"mass"?

A student is creating a table that compares theories, hypotheses, and laws. Theory Hypothesis Law Is testable Is falsifiable Is used to make predictions Provides explanations In which row should the student enter "Yes" in the columns for Theory and

What does it mean when a reaction is spontaneous

A homeogeneous mixture or solution consist of

Why is the ionic compound NaCl (table salt) able to dissolve in a glass of the molecular compound water (H2O) ?

What are the three particles of an atom

Which of these are the largest? asteroids, comets, meteors, or are they all the same size?

A) the ka for acetic acid (h3cco2h) is 1.737 * 10-5. what is the pka for this acid? b. use the pka calculated above to determine the ph at which [h3cco2h]=[h3cco2-].

Suppose you take a piece of hard wax from an unlit candle. After you roll the wax between your fingers for a while, it becomes soft. What State of matter is the softer wax? Is it possible for wax to change without changing state

Prevailing winds peru