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A biologist records the number of microbes growing in a culture at the times listed in the table. If the microbes continue to
1 answer
625 views
What is the percent mass of calcium in a calcium supplement if 1.28-g of calcium carbonate is extracted from a 2.72-g pill?
1 answer
588 views
Calculate the amount of heat required to raise the temperature of a 25 g sample of water from 9 ∘C to 30 ∘C.
Express your
1 answer
840 views
if the volume of the vapor had been assumed to be 125ml instead of your measured volume,what would have been the percent error
1 answer
1,393 views
A metal whose threshold frequency is 9.02×1014
1 answer
460 views
An electron traveling at 2.1×E5 m/s has an uncertainty in its velocity of 7.98×E4 m/s.
What is the uncertainty in its position?
0 answers
542 views
An electron has an uncertainty in its position of 527 pm .What is the uncertainty in its velocity?
1 answer
576 views
A metal whose threshold frequency is 9.02×1014 s-1 emits an electron with a velocity of 7.11×E5 m/s when radiation of
0 answers
839 views
An X-ray photon of wavelength 0.948nm strikes a surface. The emitted electron has a kinetic energy of 979 eV.
What is the binding
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669 views
Calculate the de Broglie wavelength (in pm ) of a hydrogen atom traveling 445 m/s.
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735 views
Answers (3)
solve(sin(pi/2 -(20/a)*((1-(20/a)^2)^.5)))
There are no constraints on the system.
if the volume of the vapor had been assumed to be 125ml instead of your measured volume,what would have been the percent error in your report? molar mass of the compound?explain
