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A large flask with a volume of 936mL is evacuated and found to have a mass of 134.66 g. it is then filled to a pressure of 0.967atm at 31 C with a gas of unknown molar mass and then reweighed to give a new mass of 135.91 g. what is the molar mass of this gas.
Calculate the work done in joules by the reaction when 0.35 g of Na reacts with water to form hydrogen gas at 5°C and 2.5 atm. 2 Na(s) + 2 H2O(l) 2 NaOH(aq) + H2(g)
Calculate the mass of propylene glycol that must be added to 0.360 of water to reduce the vapor pressure by 2.88 torr at 40°C (Pressure of H2O is 55.3 torr at 40°C ).
galvanic sell is formed from a copper electrode and magnesium electrode in solutions containing their salts in 1.0M concentrations Mg(s)/Mg2+(aq)//Ag1+(aq)/Ag(s)
what is steam distillation and why is it a preferred technique to purify high boiling liquids that are water insoluble?
If 15 g of KClO3 are added to 200 g of water at 25 degrees celsius with stirring, how much of the KClO3 will dissolve?
Flask a contains h2 at 0 C and 1 atm pressure. Flask b contains co2 gas at 25 C and 2 atm pressure. compare these following
Carbonyl fluoride, COF2, is an important intermediate used in the production of fluorine-containing compounds. For instance, it is used to make the refrigerant carbon tetrafluoride, CF4 via the reaction
All of the sulfate ion is in the precipated as barium sulfate. the mass of Barium Sulfate 0.5032g . What is the average mass of saccharin per tablet ? What is the % mass of saccharin per tablet?
CH4(g) + 3 Cl2(g) CHCl3(g) + 3 HCl(g) How many grams of CH4 is needed to produce 43.0 g CHCl3?
A 248 gas sample has a mass of 0.433 g at a pressure of 745 mm Hg and a temperature of 28 C. What is the molar mass of the gas?
You are going to a birthday party and you want to give the children balloons filled with He gas. How many balloons can you fill to a volume of 2 liters if the internal gas pressure of the tank
What is the purpose of dissolving the acetanilide in glacial acetic acid prior to beginning the nitration reaction? What happens when you mix sulfuric acid with nitric acid?
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