Write the empirical formula of at least four binary ionic compounds that could be formed from the following ions:

Zn:2+

Al:3+

Cl:1-

S:2-

Answer the following stoichiometry question: How many atoms in 4.75 moles of gold, Au? 936 atoms 41.5 atoms 2.86 x 10^ 24 atoms 1.27 x 10^ 23 atoms

Real gases behave as ideal gases only when they are at Select one: a. high temperature and high pressure b. low temperature and high pressure c. high temperature and low pressure d. low temperature and low pressure

What is true of a concentration solution? answers include: its concentration is not based on its molarity it has a high molarity it has a low molarity

Suppose you were a world leader faced with the question of drilling in Antarctica. What decision would you make? Give reasons for your decision

What is a short definition of force?

Starting from school you bicycle 2 km north then 6km east then 2km south. What is your final position relative to the origin (two coordinates) A garbage truck takes 10 sec to go from 0km/hr-100km/hr.

Which of the following correctly explains the role of enzymes in biochemical reactions? A) Enzymes provide energy in the form of ATP to lower the activation energy needed for the reaction.

Can a beta live in the same tank with an oscar fancy fish

List two things that might spin a generator to produce electricity

Which would be true if you went to the moon A: your mass would decrease but your weight would stay the same B:your weight would decrease but your mass would stay the same C your weight and mass would increase D your weight and mass would decrease