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A 1L steel tank is fitted with a safety valve that opens if the internal pressure exceeds 850 torr. It is filled with helium at 23 oC and 0.991 atm and placed in an oil bath. To what temperature (oC) will the oil bath need to be heated to first open the safety valve?
A. 270
B. 340
C. 100
D. 170
E. 62
The concentration of HCl in a bottle was determined as follows: •3.00 mL of the acid were diluted to 250.00 mL •102.40 mL of the diluted acid were titrated with 0.08212-M NaOH
A sample of vinegar has a freezing point depression of 2.0 degrees C. What is the estimated percent by mass of acetic acid in the vinegar? Molar mass of acetic acid is 60g/mol
A foul-smelling gas produced by the reaction of with was collected, and a 1.00 sample was found to have a mass of 1.52 at STP. What would be the formula.
water has a molar heat of vaporization =40.79 kJ/mol, determine how many grams of water could be vaporized by 0.806 kilo Joules heat? Express your answer in units of g
It is heated so that its pressure increases from 1.50 atm to 407 atm. Determine the work done on the gas during this process.
How many moles of Na2SO3 were added to the calorimeter cup if 30.0mL 0.50 M NaOCl and 70.0mL 0.50 M Na2SO3 were combined?
Assume no heat is lost to the surroundings. The normal boiling point of methane is -161.5 C. The specific heats of liquid and gaseous methane are 3.48 and 2.22 J/g.K, respectively. A)liquid B)gaseous C)solid
What is the molar solubility of Hg2C2O4 (Ksp = 1.75x10^-13) in 0.34M Hg2(NO3)2
Silver chloride crystallizes with the sodium chloride (rock salt) structure. The length of a unit cell edge is 555 pm. What is the density of AgCl? Show all works.
A mineral containing iron(II) sulfide but no other sulfides is treated with excess hydrochloric acid to produce hydrogen sulfide. If a 3.15 g sample of the mineral yields 448 mL of hydrogen sulfide gas
If 113 g of Pb(NO3)2 reacts stoichiometrically according to the balanced equation, how many milliliters of 2.96 M aqueous NaI are required?
Calculate the freezing point depression constant (Kf) of phenol ? c)If 24.5899g of unknown was added to 838.72g of phenol to prepare the solution, calculate the molar mass (MM) of the unknown.
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