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A 50.0 gram sample of water is heated from 21.5oC to 26.21oC. Explain how many Joules of heat were added to this solution?
when solutions containing 1.00 g ofbacl2 and 1.00 g ofna2so4 were mixed solid baso4 formed. the baso4 precipitate
What is the minimum volume of water needed to recrystallize 50 mg of phthalic acid? How much phthalic acis will remain in solution after recrystallization?
If the equilibrium constant for the reaction H2O + CO = CO2 + H2 is 2.5, the equilibrium conversion of CO is lower than 65%
what effect does changing from room temperature to 37 have on the activity of the enzyme? 5 what does copper II sulfate to do the enzyme
Explain what mass (g) of potassium chloride is contained in 430 ml of a potassium chloride solution that has a chloride ion concentration of 0.193 M
a 0.2527-g sample of a mixture of mgoh2 and aloh3 was treated with 50.00 ml of 0.225 mol l?1 hclaq. the resulting
What solution is the pH after an additional 200 ml of pure water is added to the initial solution. Is this acidic or basic
75.0 mL of a 1.80 M solution is diluted to a volume of 258 mL. A 129-mL portion of that solution is diluted using 187 mL of water.
The silver chloride wasn't completely dry when the final weighing was made. The unknown sample contained traces of moisture when it was weighed. The precipitated silver chloride was exposed to excessive light while it was drying.
silver nitrate, AgNO3; hydrochloric acid, HCL; and sodium carbonate, Na2CO3. You are to place the labels on the test tube using only the three solutions present. Here is your analysis procedure: A portion of test tube 1 added to a portion of test t..
The overall volume compression ratio of a reversed carnot cycle working with air as a refrigerant is 10. The temperature limits of the cycle are 40 degree C and 0 degree C.
a dissolve 8g of ammonium iron iisulfate in 25cm3 of water that has been acidified with 1cm3 of 2m sylfuric acid.add
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