Given the formula c=λν, find the frequency of a wave that has a wavelength of 7.26...

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Given the formula c=λν, find the frequency of a wave that has a wavelength of 7.26 x 10-5 m (remember, c=2.998 x 108 m/s)

If a radioactive sample starts with 100 g, how many grams of the original substance will be left after 5 half-lives?

Given the formula c=λν, find the wavelength of a wave that has a frequency of 6.29 Hz (remember, c=2.998 x 108 ms).

Give the atomic symbol, mass and protons for the missing element in this nuclear reaction:26,12, Mg+9,4Be → ?+1,0, n

science chemistry

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