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The U.S. Environmental Protection Agency set a maximum contaminant level (MCL) for tetrachloroethylene (TCE, C2Cl4) in drinking water of 0.005 ppm (by mass). If the water in your home contains 4 percent of the allowable MCL, what is the molarity of TCE in your home?
Calculate the concentration of Calcium (MW 40.078 g/mol) in the H2O in units of gram per 100 mL and calculate the concentration of Calcium (MW 40.078 g/mol) in the H2O in units of gram per 100 mL.
calculate the change internal energy (E) for a system that is giving off 45.0kJ of heat and is performing 855J of work on the surroundings.
if your body develops a charge of -20 (microcoulombs), how many excess electrons has it acquired?
A 30.0-mL sample of 0.165 M propanoic acid is titrated with .300 M KOH. Calculate the pH after the following amounts of base is added
In less than a 150 words, explain why swirling or shaking a solution and its drying agent hastens the drying process.
The Aldol condensation is very sensitive to the mole of ratio of starting materials used. What would be the products of 1:1 mole ratio
what determines the order in which the component elements of binary compounds are written?
determine at what pressure will pure H 2 O start to boil if its temperature is seventy five degree Celsius
It is often necessary to do calculations using scientific notation when working chemistry problems. For practice, perform each of the following calculations
naturally occuring copper contains a miture of 69.09% copper-63 (62.9298 amu) and 30.91% copper-65 (64.9278 amu)
what are the ground state electron configuration of the elements in period 2 of this alternate reality?
.4550 g of rock containing douglasite is treated by AgNO3. it took 37.20 ml of 0.1000 M AgNO3 to precipitate all Cl- as AgCl. Calculate the % mass of the mineral in the sample
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