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Problem- The accepted value for the density of a certain liquid is 1.11 g/mL. A student obtains an average density of 1.09 g/mL. What is the relative percent error in the student's value? Do not comprise the percent sign in your answer. Express your respond to two decimal places
The flask was then shaken until the solution was uniform. A 55.0-mL sample of this glucose solution was diluted to 0.500L . How many grams of glucose are in 100mL of the final solution?
16 grams CH3OH is dissolved in 27 grams of water at 30 degrees celcius. given that vapor pressure of water at 30 degrees celcius is 31.82mm Hg.
what are the relative energies of the orbitals defined by n=4? if this atom is placed in a magnetic field, how would the relative energies of these orbitals change and why
aspirin is a monoprotic acid its formula ishc9h7o4. acertain pain reliever was analyzed for aspirin by dissolving0.250
what is the resonance energy of c6h6 and how do you find
what mass of carbon should be produced if the tums were pure calcium carbonate? this is theoretical yeild. equation
a 8.0-l sample of helium is held at constant pressure. if the temperature is changed from 41 degrees c to 35 degrees c
An analyst collects and melts 555.0 g of snow. a 100 g portion of the resulting water is made basic with ammonia, treated with cyanide and to mask other metal ions, and then extracted with 10.0 mL of a solution of dithizone in chloroform. the chlo..
the half life of te-132 is 3.26 days. this isotopedecays by beta emission to a highly unstable intermediate that decays
Helium-oxygen mixtures are used by divers to avoid the bends and are used in medicine to treat some respiratory ailments. What percent (by moles) of He is present in a helium-oxygen mixture having a density
Problem- Calculate the binding energy (kJ/nucleon) for a Cu-63 nucleus. H-1 = 1.00785 g/mol, n-1= 1.008665 g/mol, Cu-63= 62.93960 g/mol.
At 25 C and 1.0 atm pressure, what is the minimum quantity of dry air needed to combust 1.1 L of CH4 (g) completely to CO2(g). Remember that oxygen is present in the atmosphere to the extent of 209480 parts per million.
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