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A solid that weighs 0.008kg . Put the solid into a gradulated cyliner filled with water and the volume increases by 10cm3 what is the denity?
check all that apply
0.008 g/ml
0.8 g/mL
8x10^-1 g/mL
8 g/mL
What is the pH of this buffer solution? (Neglect the volume change that occurs with addition of solid sodium nitrite) b.) Calculate the pH when 2.00 mL of 0.0275 M NaOH are added to 50.0 mL of buffer solution.
When 10.0 g of NH3 reacts, the actual yield of N2 is 8.50 g. What is the percent yield?
although not a transition element, lead can form two cations: Pb2+ and Pb4+. write the formulas for the compounds of these ions with the chloride ion.
what is the classification of each reactant as metal or nonmetal?
A mixture of CO, CO2 and O2 is contained within a 275 mL ?ask at 0 ? C. If the total pressure is 780 torr, the CO has a partial pressure of 330 torr and the CO2 has a partial pressure of 330 torr, what is the partial pressure of O2
A sample of helium effuses through a porous container 6.5 times faster than does unknown gas X?
Using Henry's Law to calculate gas solubility If air contains 78% N2 by volume, what is the solubility of N2 in water of 25oC and 1 atm (Henry's constant kH for N2 in H2O at 25oC = 7 x 10-4 mol/L.atm)?
A flask contains 0.190 mol of liquid bromine, rm Br_2. Determine the number of bromine molecules present in the flask.
A sample of steam with a mass of 0.550 g and at a temperature of 100C condenses into an insulated container holding 4.50 g of water at 6.0C. Assuming that no heat is lost to the surroundings, what will be the final temperature of the mixture?
Calculate the pH of the resulting solution at each of the specified points in the titration. Initially: pH of HCl
An unknown element, X, reacts with chlorine to form a compound with the formula XCl2. Which element is most likely to be element X?
The solubility of N2 in blood can be a serious problem (the "bends") for divers breathing compressed air (78% N2 by volume) at depths greater than 50 ft. Find the volume (in mL) of N2, measured at 25degrees celsius and 1.00 atm, released per liter..
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