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Physical Chemistry
what is the advantages and disadvantages of acid and base
Physical Chemistry
The freezing point of water H2O is 0.000C at 1 atmosphere.
How many grams of magnesium chloride (95.21 g/mol), must be dissolved in 299.0 grams of water to reduce the freezing point by 0.350degreesC ?
____g magnesium chloride.
How many grams of magnesium chloride (95.21 g/mol), must be dissolved in 299.0 grams of water to reduce the freezing point by 0.350degreesC ?
____g magnesium chloride.
Physical Chemistry
Your favorite FM radio station has a wavelength of 2.261 meters. Convert that length into feet using the centimeter to inch conversion factor.
How many significant figures are in your answer?
How many significant figures are in your answer?
Physical Chemistry
While studying abroad in France, you offer to bake your grandmother's famous cookies for other students in your program. You have a recipe which calls for 1.40 lb of flour, but of course in France you will need to purchase flour in kilograms. How many kilograms of flour doses the recipe call for?
Physical Chemistry
Carry out the following conversions from one metric unit of mass to another.
64.1 dg=_______mg
0.439cg=_______kg
3.32mm=_______in
64.1 dg=_______mg
0.439cg=_______kg
3.32mm=_______in
Physical Chemistry
s photon of 300nm is absorbed by a gas and then re emits two photons. One re re emitted photon has wavelength 400nm. Calcualte energy of other photon re emitted out.
Physical Chemistry
7. A prescription is written for 300mg of an antibiotic to be given by mouth every 8 hours for 10 days. The antibiotic comes in an oral suspension in a concentration of 100mg/5ml, and is available in a 150 ml bottle. One bottle of antibiotic costs $600.00. The technician did the calculation to determine the number of bottles to reconstitute. They determined they needed 6 bottles and continued with reconstituting the 6 bottles and preparing the labels. On final check the pharmacist was very upset because the technician has cost the pharmacy money because of a poor calculating. How many bottles should have been reconstituted and how much money was lost by the pharmacy?
Physical Chemistry
Find e/m for He 2+ion and compare with that for electron.
Physical Chemistry
If the LEL for hydrogen = 4% and the UEL = 74% what mass of hydrogen was contained in the tin when it exploded?
(conditions at the time of the experiment were 23oC and 750 mmHg)
(conditions at the time of the experiment were 23oC and 750 mmHg)
Physical Chemistry
Since ice will condense the colder it gets, can it ever condense enough that it would sink in water?
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#340153 on Dec 2023
#340153 on Dec 2023