What units must any numbers inserted into a BCA table be in?
Moles
100
What is an instrument used to measure atmospheric pressure?
Barometer
100
What is the mathematical relationship that describes the behavior of an ideal gas?
Ideal Gas Law
100
Electron transfer results in what type of bonding?
Ionic
100
What is a solution?
A homogeneous mixture of two or more substances
200
What is the molar mass for CO?
28 g
200
What is a condition in which two opposing chemical phase changes proceed with equal rates called?
Equilibrium
200
What is a relationship that describes the behavior of gases that mixes Boyle’s Law, Charles’ Law, and Gay-Lussac’s Law together?
Combined Gas Law
200
How many valence electrons does any neutral Halogen (Fluorine’s group) atom have?
7
200
What is the equation for molarity?
M= moles/liters
300
How many moles of S are there in 4.55 x 1023 atoms of S?
0.756 moles S
300
What is the process of converting a gas to a solid without passing through the liquid phase called?
Deposition
300
A sample of gas is initially contained in a volume of 3.55 L at 0.925 atm. What will be the new volume if the pressure is increased to 1 atm?
3.28L
300
For any Lewis Dot Structure of a single atom or ion, what does the element’s symbol represent?
Kernal
300
What vitamin is easily transported by the blood and easily excreted by the kidneys because it is water soluble?
Vitamin C
400
What is conserved in any chemical reaction?
Both mass and atoms are conserved
400
Use the equation 1 atm = 101.3 kPa = 760 mmHg to answer the following question...
A barometer reads the air pressure at 810 mmHg. What is the pressure in atmospheres?
1.07 atm
400
When using the Ideal Gas Law, what must the units of pressure always be in?
kPa
400
If two molecules are isomers of each other, what does that mean? Also, provide an example or category of isomers.
If molecules are isomers then they have the same chemical formula, but different 3-D shapes.
Examples: geometric, optical
400
What happens to the solubility of a gas as the solvent's temperature increases?
The solubility decreases as temperature increases
500
In the reaction:
Na20 + H20 ----> 2 NaOH
74g Na20 react with excess water. Calculate the mass NaOH produced...
95.2 g NaOH
500
What two changes of states does something go through when it is freeze dried? Why do they do it as a two step process?
It starts off as a liquid, then goes to a solid and then a gas. This two step process vaporizes the liquid without cooking the food.
500
How many moles of a gas sample will occupy 5.0 L at STP?
0.223 moles
500
Draw a Lewis Dot Structure for the following molecule...
CO2
O=C=O
500
What occurs when ions separate from the crystals of ionic compounds during the solution process?