The half-life of u238 is 45x109 years how many
The half-life of U238 is 4.5X10^9 years. How many disintegrations occur in 1 minute for a 10 mg sample of this element
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object o1 is 163 cm to the left of a converging lens with a 117-cm focal length a second lens is positioned 100 cm to
an unknown solid compound is analyzed in the lab to determine its chemical formula the following observations are
a neodymium-glass laser emits short pulses of high-intensity electromagnetic waves the electric field of such a wave
at 20 degree c the vapor pressure of c2h5oh ethyl alcohol is 439 torr the vapor pressure of water at this temperature
the half-life of u238 is 45x109 years how many disintegrations occur in 1 minute for a 10 mg sample of this
pure water containing no arsenic was spiked with 40micrograms arsenatel seven replicate determination gave 39 40 39 41
what volume of glacial acetic acid d 106 gml and what weight of solid potassium acetate are required to prepare 5
consider an electron for a hydrogen atom in an excited state the maximum wavelength of electromagnetic radiation that
you are given 500ml of a solution at ph 70 containing an unknown concentration of atp for which e- the molar
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