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Calculate the number of moles of ethanol, (C2H6O) in 250.0 mL sample. Ethanol has a density of 0.76 g/mL.
A hydrated form of copper sulfate (CuSO4·x H2O) is heated to drive off all the water. If we start with 9.47 g of hydrated salt and have 5.29 g of anhydrous CuSO4
Draw the structure(s) of all carbocations that could potentially form from the alkene and label each carbocation as primary, secondary or tertiary. 2-methylpropene
The following solutions are mixed together:121.0 mL of 1.54 M AgNO3 and 45.0 mL of 1.29 M K2SO4. Calculate the molar concentration of Ag+ ions in the final solution.
Write the balanced equation and determine the standard cell potential for each of the following cell notatio
A mixture of 2.65 atm of h2, and 2.65 of I2, is contained in a 1.0L vessel at 430 C. The qaullibrium constant (KP) for the reaction H2(g)+I2(g)->2HI(g) at this temperature is 54.3. determine the equilibrium partial pressure of H2,I2 and HI
A compound contains only carbon, hydrogen, and oxygen. Combustion of 0.01068 g of the compound yields 0.01601 g of CO2 and 0.00437 g of H2O. The molar mass of the compound is 176.1 g. What are the empirical and molecular formulas of the compound?
How much heat is required to warm 225 grams of ice from negative 46.8 degrees celsius 0 degrees celsius melt the ice, warm the water from 0 degrees celsius to 100 degrees celsius.
Calculate the pH during the titration of 20.0 mL of 0.25 M HBr with 0.25 M KOH after 19.90 mL of the base have been added.
What Volume of .0200 M KMNO4 is required to titrate a solution containing
How many moles of HF (Ka = 6.8 10-4) must be present in 0.165 L to form a solution with a pH of 2.25?
What is the molar solubility of silver bromide in a solution that also contains 0.050M Ag+ ions at 25 °C? The Ksp of AgBr is 5.4 × 10-13.
the valve between a ten litre tank containing a gas at a pressure ofnbsp 1 atm and a three lite tank containing a gas
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