Gas Laws
600.0 mL of a gas exerts a pressure inside its container of 8.00 atm. What is the volume of the gas at 2.0 atm?
2,400 mL
Hydrogen Bond
Endo or exo: a substance is vaporizing
Endothermic
What is the molarity of a solution that has 5.00 moles of solute and 2.05 liters of solution?
2.44 M
The conjugate base for HNO3
NO3-
When 50.0 liters of oxygen at 20.0 degrees Celsius is compressed to 5.00 liters, what must the new temperature be to maintain constant pressure?
29.3 K
Only force present in nonpolar molecules
London-Dispersion Force
40.0g of copper metal (specific heat = 0.385J/gC) is heated from 25.0C to 725.0C. Determine the amount of energy required to heat the sample of copper.
10800J
34.8g of Na2O are used to form a solution with a volume of 0.50L. What is the molarity?
1.10 M
Conjugate acid for H2PO4-
H3PO4
A gas has a pressure of 0.12 atm at 294 K. What is the new pressure if the temperature dropped to 273 K?
0.111 atm
What are intermolecular forces?
Attractions between atoms, ions, or molecules that hold them together
How many grams are in 0.480 moles of magnesium?
11.7g Mg
How many liters of 12.0M HCl would you need to make 1.2L of 3.5M HCl?
0.35 L
The pOH of a substance with a pH of 12.316
1.684
A gas occupies a volume of 17 liters at 299 K and exerts a pressure of 2.3 atm. If the temperature is raised to 350 K and the pressure decreases to 1.5 atm, what is the new volume of the gas?
30.5 L
Physical properties of intermolecular forces
As the intermolecular force increases, the boiling and melting points are higher, the evaporation rate is slower, and the vapor pressure is lower
Determine the limiting reactant of 2K3PO4+3Ca(NO3)2->Ca3(PO4)2+6KNO3
Ca(NO3)2
How many grams are there in 3.00% by mass solution that contains 15.0g of sodium sulfate?
500g
Name of the acid with the formula H3PO4
Phosphic acid
A sample of argon gas at STP occupies 56.2 L. How many moles are present?
2.51 moles
Strongest force present in PCl3
Dipole dipole force
12.2g of water was cooled from 105.0C to -10.0C. Determine the heat released in this process.
-37200J
A student placed a sample of a food coloring that contains a mixture of a blue dye and a red dye at the top of a chromatography column, two bands of colors are seen in the column. Describe the polarity of the compounds.
The red dye is more polar than the blue dye
2.55g of NaOH (molar mass:40.00 g/mol) is added to 750.0 mL of 0.250M HNO3. What is the pH of the resulting solution?
pH = 0.783