Moles and Stoichiometry
States of Matter
Gas Laws
Acids and Bases
Solutions
100
What is the value of the Mole?
6.023 x 10^23
100
What is a phase transition?
It is a change in structure and can be recognized by an abrupt change in properties.
100
What is the unit of temperature that is used when using the gas law formulas?
Kelvin
100
What does an acid taste like?
Sour
100
What is a solution?
A homogeneous mixture of two or more substances.
200
What units can be put into a BCA table?
Moles
200
What is an allotrope?
Two or more different molecular forms of an element in the same physical state.
200
State Boyle’s Law in mathematical terms.
P1xV1 = P2xV2
200
Based on the pH scale, what would a substance be considered if it is a 7?
Neither base nor acid
200
What is solubility equilibrium?
The physical state in which the opposing processes of dissolution and crystallization of a solute occur at equal rates.
300
How many grams are in 0.2 moles of C9H8O4?
36 g
300
What is standard temperature and pressure when working with gases?
0° C and 101.3 kPa = 1atm = 760 mmHg
300
What is the name of the law represented by (P1xV1)/T1 = (P2V2)/T2?
The Combined Gas Law
300
What is stronger in terms of corrosiveness: a low concentrated strong base or a high concentrated weak base?
High concentrated weak base
300
Nonpolar solvents will dissolve materials that are?
Nonpolar
400
In the reaction: 17.5 g CuCl2 react with 18 grams of Al. What is the excess reagent?
Al
400
A barometer reads the air pressure at 810 mmHg. What is the pressure in atmospheres?
1.066 atm
400
What do all the parts of the Ideal Gas Law stand for? Give the formula, the things that the variable represent, and the value of “R”.
PV = nRT. P = pressure, V = volume, n = number of moles, R = ideal gas constant, and T = temperature. R= .082
400
What is the following equation mean? HCl+NaOHàNaCl+H2O
Neutralization
400
What is the molarity of a solution which has 16g of KOH dissolved into 175mL of water?
1.6 moles KOH
500
What is the theoretical yield of BN, given 2 moles of B2O3 and an excess of CaB6 in the reaction B2O3 + 3 BaC6 + 10 N2 → 20 BN + 3 CaO?
40 Moles
500
A gas sample has a pressure of 67.5 kPa. What is the pressure in millimeters of Mercury?
506.417 mmHg
500
A tank of gas is filled to a pressure of 5.00 atm at 75 degrees Celsius. At what temperature will its pressure become 3.50 atm?
243.6 K
500
Calculate the pH of a 5.2 x 10-2 M solution of benzoic acid (Ka = 6.5 x 10-5) in otherwise pure water.
2.7
500
What is the initial volume of a solution with an initial concentration of 5.7 M and has been diluted to 3.4 L at a final concentration of .25 M?
V1= .149122807
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