13. 12 grams of carbon react with 32 grams of oxygen to form exactly 44 grams of carbon dioxide. This is a good example of: A Democritus' theory B Priestley's experiments C the Law of Conservation of Mass D the Law of Multiple Proportions 14. Who first proposed the Law of Definite Proportions? A Empedocles B Proust C Dalton D Priestley

Equations can be balanced by using the half-reaction method. Which step should be completed immediately after finding the oxidation states of atoms? inserting the coefficients balancing the half reactions identifying the half reactions inspecting the number of atoms

Which of the following electron sub-levels has the highest energy electrons? 4s 3d 3p 2d 3s

Convert 3.000 grams $(g)$ to milligrams (mg). 30 mg 3,000 mg 300 mg 0.3 mg

What is the name of the compound with the chemical formula $Fe_{2}(SO_{4})_{3}$ Spelling counts. name: __

Sodium forms a cation with net charge of $+1$ . How many sodium ions can bond with carbonate ? View the table to help you answer this question. 2 3 4 1

A pharmacist needs to make a 25.0 liter of a 350 M solution of a substance. The stock solution of the substance is 10.5 M. How much stock and water must be mixed? 1.47 liters of stock and 16.67 liters of water 8.33 liters of stock and 16.67 liters of water 1.47 liters of stock and 25.0 liters of water 8.33 liters of stock and 25.0 liters of water

Which of the following reaction quantities will have an effect on reaction rate? Select the single best answer. $E_{a}$ $\Delta G^{0}$ $K_{eq}$ $\Delta H^{0}$

2. Solving for Temperature A gas at constant volume has a pressure of 5.0 atm at a temperature of 400 K. What is the temperature when the pressure increases to 7.5 atm?

$?\rightarrow _{50}^{121}Sn+_{2}^{4}He$ In the equation above determine the parent isotope by name and mass number. $\square $ $\square $

The chemical reaction that results in the formation of covalent bonds linking monomers together to form a polymer is called a __ reaction. condensation