Fluorine's atomic number is 9 and its atomic mass is 19. how many neutrons does fluorine have

What is the name for conversion factor that takes you from moles of compound "A" to ions of component "A" a) avogadro's number b) mole ratio c) molar volume d) molar mass

Sea gulls prey on snails on the rocky sea coast. The snails vary in color from solid brown to brown and tan striped. The birds suck the soft snail bodies out of the shells and leave the shells behind on the rocks.

How is electronegativity used in determining the ionic or covalent character of the bonding between two elements?

How many grams of aluminum sulfate form when 3.90 grams of aluminum is placed in 13.65 grams of sulfuric acid?

Plants leaves are often preserved as?

A particular country has 50 total states. If the areas of all 50 states are added and the sum is divided by 50 , the result is 196 comma 510 square kilometers. Determine whether this result is a statistic or a parameter.

Determine the number of bonding electrons and the number of nonbonding electrons in the structure of xe f 2.

How do we know when two systems have reached thermal equilibrium? (check all answers that apply) a) No heat flows between the two systems. b) One system is colder than the other c) One system is warmer than the other.

Which atom has the highest ionization energy? why is the ionization energy in trat atom greater?

A 0.2 M carboxylic acid (RCOOH) has a Ka = 1.66x10-6. What is the pH of this solution? Enter to 2 decimal places.