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A student was given only one graduated cylinder to use for this experiment. ? after using it to measure 50.0mL of the assigned acid, the student failed to rinse or dry the cyclinder before measuring out the 50.5mL of the base. would the calculated H neutzn be higher, lower, or the same as the literature H neutzn? briefly explain this difference as a result of using only one graduated cylinder for the experiment
solar radiation is 1200 , how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 for solar radiation.
calculate the total volume of hydrogen gas which would be collected at 760 mm Hg and 25 degrees celsius. Will a second gas be present in the sample collected by water displacement
Which statement best describes relationships in a modern periodic table? A.) Each transition element is placed in the column of the main group element that it most closely resembles.
Sodium carbonate was used to precipitate silver from a solution. 6.00 grams of silver carbonate were recovered from 1.500L of solution. What was the concentration in ppm of silver ions in the original solution?
The combustion of 53.4 g of butane (c4h10) produces 95.6 g of co2. what is the percent yield of the reaction
For each of the following species, draw its Lewis-dot structure. If the species exhibits resonance, draw all the resonance hybrids. For each species, tell its shape, bond angles, hybridization of the central atom, and whether it is polar or nonpola..
the resulting mixture has (pb2+)i=1.0x10^-3M, (so4^-2)i=1.0x10^-4 for pbso4 ksp=1.3x10^-8. compare qsp to ksp and decide whether a precipitate will form.
aqueous solution given the density of the glucose solution is 1.23 g/cm^3.
determine the freezing point depression, delta Tf, for the ionic solution. b. determine m effective for ionic solution. c. determine the van't Hoff factor, i, for the ionic compound.
The rate law for the rearrangement of methylisocyanide (CH3NC) to acetontrile (CH3CN) at 800 K is:
If a 220 mg piece of gold (density =19.32 {rm g}/{rm cm}^{3}) is hammered into a sheet measuring 2.5times1.0 {rm ft}, what is the average thickness of the sheet in meters?
Write balanced reactions for the complete combustion of each fuel and use standerd enthalpies of formation to calculate the amount of heat relesed per kilogram pf the fuel.
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