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What mass of salicylic acid is needed to produce one extra strenght tablet of aspirin if the reaction has 60% yield. Please show work and correct sig figs.
typically scuba tanks are immersed in water to cool them as they are filled with compressed air. if a tank is initially
Calculate How many palladium atoms will have to be laid side by side to span a distance of 4.28 mm if The radius of a palladium atom is 137 pm.?
A saturated solution of magnesium hydroxide in equilibrium with undissolved solid is prepared at 25 degree celcius. The pH of the solution is 11.03. Calculate the value of the Ksp
1) Which Ion will be larger, Cr^3+ or V^3+. Explain why 2) How and why does Silicon form a "network covalent oxide"? what is a network covalent oxide 3) Why does Fe^2+ and Co^3+ have the same noble gas electron configuration of [Ar]3d^6
Show that the ammonium ion NH4+, 1ppb(mole fraction) is equivalent to 0.56 ppb (mass fraction) or .74 ugm-3 at T=298 and 1 atm. Start by solving for mass concentration Note that mass fraction is related to mole fraction as
What is the pH of pure water in equilibrium with 1 atmosphere of carbon dioxide at 25?C?
2noclglt--gt2nog cl2ga pressure of 0.600 atm of nitrosyl chloride is sealed in a flask and allowed to reach
A sample of 35.1 g of methane gas has a volume of 5.10 L at a pressure of 2.70 atm. Calculate the temperature.
How many grams of dipotassium phthalate (242.3 g/mol) must be added to 700 mL of 0.175 M potassium hydrogen phthalate to give a buffer of pH 6.00?
the preparation of the esters given in this reaction, the reaction product is extracted with 5% sodium bicarbonate solution (NaHCO3) in the isolation step
For each of the following states described in the following list, calculate the final pressure, as well as q, w, ?U, and ?H. a) the gas is expanded isothermally and reversibly until the volume doubles
A 0.113 g sample of a gas exerts a pressure of 780 torr in a 50.4 mL container at 23?C.What is the molar mass of this gas?
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