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1.00g each of NaCl,CaCl2,C6H12O6 dissolved in 100.0g water. What is the vapor pressure of the solution at 100C? What is the freezing point and boiling point?
Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water:
If the sample contains a combined total of 1.50 mol and has a total mass of 45.0g, what are the percentages of CO2 and Ne in the sample by mole?
Calculate the final temperature of 33 ml of ethanol initially at 20 degrees Celsius upon absorption of 541 J of heat. (density of ethanol =0.789 g/ml)?
Complete the two half reactions for the Pt electrode. Write two correct Nernst equations for the cell voltage.
some physical properties of water are shown below.freezing point 0.00degcboiling
consider the following unbalanced reaction.p4s f2g pf3gwhat mass of f2 is needed to produce 175 g of pf3 if the
a tank of helium gas with a pressure of 280 at 10 is heated to give a pressure of 1500. what is the new temperature in
Sodium nitrate decomposes upon heating to form sodium nitrite and oxygen gas. This reaction is sometimes used to produce small quantities of oxygen in the lab. How many grams of sodium nitrate must be heated to produce 128g of oxygen?
3 moles of carbon dioxide gas expands reversibly in a piston-container from 20 L to 40 L in an isothermal process at 400 K. Calculate work, heat, change in internal energy and change in enthalpy, considering van der Waals behaviour. [a = 3.59 atm ..
autoclaves must be pressurized to raise the temperature in order to sterilize medical equipment. At what pressure would the autoclave need to be to sterilize the equipment
What causes the heating that is seen in the thermosphere? What causes the heating that is seen in the stratosphere? What is the biological importance of ozone in the stratosphere?
A 2.60 mole quantity of NOCl was initially in a 1.50 L reaction chamber at 400°C. After equilibrium was established, it was found that 22.0 percent of the NOCl had dissociated
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