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An air sample contains 0.034% . If the total pressure is 765 , what is the partial pressure of?
How many grams of CaH2 (Molar Mass = 42.1 g/mol)are needed to generate 14.0 L of H2 gas if the pressure of H2 is 757 torr at 20.0°C
You measure 50,000 decays of a radioactive sample in 20 seconds. You measure the same sample 50 days later and observe only 10,000 decays in 20 seconds. What is the half life of the radioactivity
A 5.01 g sample containing solid potassium chlorate and other inert impurities was heated in a test tube. The potassium chlorate in the sample completely decomposed into potassium chloride and oxygen gas.
Chlorine was passed over 1.30 g of heated titanium, and 4.20 g of a chloride-containing compound of Ti was obtained. What is the empirical formula of the chloride-containing compound
If a bottle of nail polish remover contains 150g of acetone, how much heat would be released by its complete combustion?
Draw a phase diagram labeling all the above points. Also label the melting point curve, the boiling point curve, and the solid, liquid, and gas regions.
Calculate ?Grxn at 298 K under the conditions shown below for the following reaction. SO3(g) + H2O(g) ? H2SO4(l) ?G°= -90.5 kJ P(SO3) = 0.20 atm, P(H2O) = 0.88 atm
As a technician in a large pharmaceutical research firm, you need to produce 150.mL of a 1.00 M phosphate buffer solution of pH = 7.10. The pKa of H2PO4- is 7.21.
Which of the following compounds is soluble in water ? A) BaSO4
Determine the rate law and the value of k for the following reaction using the data provided
What mass of Ag2CO3(s) in grams is theoretically produced by mixing 125 mL of 0.315 M Na2CO3(aq) and 75.0 mL of 0.155 M AgNO3(aq)?.
The concentration of acetic acid (pKa = 4.75) in vinegar is about 1.0 M. With this information, what do you predict the pH of vinegar to be
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