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eduard
3 years ago
9

How many moles of solute are needed to prepare a 2.35 liter solution of 2.00 M Cu(NO3)2 solution

Chemistry
1 answer:
Dvinal [7]3 years ago
6 0
I don’t understand what the question is asking, sorry
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What is the wavelength of light with 2.89 x 10-19 J of energy? (The speed of
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\\ \rm\rightarrowtail E=hv

\\ \rm\rightarrowtail E=\dfrac{hc}{\lambda}

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\\ \rm\rightarrowtail \lambda=\dfrac{hc}{E}

\\ \rm\rightarrowtail \lambda=\dfrac{6.626\times 10^{-34}\times 3\times 10^8}{2.89\times 10^{-19}}

\\ \rm\rightarrowtail \lambda=6.878\times 10^{-7}m

\\ \rm\rightarrowtail \lambda=68.8\mu m

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