Molarity
What is the molarity of 0.45 moles of 02 at a volume of 1.5L?
0.3 M
What is the equation used for dilution?
M1V1=M2V2
Complete the sentence:
"Like dissolves ____."
"Like"
What is a solution?
A physical combination of matter in which macroscopic properties do not vary (Homogeneous Mixture).
Which part of the Electromagnetic Spectrum allows humans to see bones?
X-ray
What is the volume in mL needed to make a molar concentration of 0.5 M with 1.2 moles of N2?
2400 mL
A sample of 100 mL with a concentration of 0.5 M is diluted to 400 mL. What is the new concentration?
0.125 M
Which would dissolve better in water:
C3H8 or C3H7OH
C3H7OH
Components of a solution can not be separated by...
Filtration
Which region on the electromagnetic spectrum is associated with molecular rotational levels?
Microwave Radiation
How many moles of Potassium Iodide (KI) is needed to get a molarity of 0.19 in 200 mL of water?
0.038 moles of KI
A student wants to take an unknown sample dissolved in 250 mL with a concentration of 0.75 M and dilute it so the concentration is equal to 0.25 M. What is the new volume in mL that will achieve this?
750 mL
What would Sodium Chloride look like when dissolved in water? (Hint: Draw a Diagram)
*Could not get the image to load here so use link*
file:///media/fuse/drivefs-a4ac3e42fe3565feaebe18738e94acbf/root/Scanned%20Documents%20(6).pdf
What does Chromatography utilize to seperate components of a solution?
The attractive forces of the mobile and stationary phases with the components.
Which region on the electromagnetic scale is associated with electronic energy levels?
Infrared Radiation
What is the molarity of 3 grams of Magnesium Fluoride (MgF2) in 2 liters of water?
0.024 M
A sample of Calcium Chloride was dissolved in water and made a volume of 500mL. It was then diluted without the measuring of the concentration. The new volume is 750mL and the new concentration is measured as 0.15. What was the original concentration?
0.225 M
Iodine can easily dissolve into which of the following:
HNO3 H2O CCl4 HF
CCl4
What does Distillation utilize to separate components of a solution?
It takes advantage of the different inter molecular forces between the components, which affect boiling point and vapor pressure.
What is the wavelength in nano-meters of a wave with a frequency of 102.9?
2.91 * 10-3 nm
What is the mass in grams of Sodium Nitrate (NaNO3) with a molarity of 0.45 and a volume of 800 mL?
30.6 grams of NaNO3
An original sample of 0.6 moles is dissolved in 200 mL of liquid. It is then diluted to 0.08 M. What is the volume of the diluted liquid in mL?
7500 mL
Why don't Water (H2O) and Gasoline (C8H18) mix?
Water is a polar exhibiting hydrogen bonds while gasoline is non-polar exhibiting London dispersion forces. This causes the two substances to have suspension.
Water is a polar molecule with hydrogen bonding and has a boiling point of 100 degrees Celsius. Ammonia is a polar molecule with hydrogen bonding and has a boiling point of -33.34 degrees Celsius. What is the best way to separate a solution of these components?
Distillation
What is the energy of a photon with a wavelength of 650 m?
3.06 * 10-28 j