3 years ago

2 (NH4)2Cr2O7 how many atoms

Chemistry

1 answer:

Ludmilka [50]3 years ago

4 0

2+8+2+4+7=23, i think that should be the answer just add everything and multiply if you have to

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A sample of an unknown gas takes 222 s to diffuse through a porous plug at a given temperature. At the same temperature, N2(g) t

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$\large \boxed{\text{45.1 g/mol}}$

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$r \propto \dfrac{1}{\sqrt{M}}$

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$\begin{array}{rcl}\dfrac{222}{175} & = & \sqrt{\dfrac{M_{2}}{28.01}}\\\\1.269 & = & \sqrt{\dfrac{M_{2}}{28.01}}\\\\1.609 & = & \dfrac{M_{2}}{28.01}\\\\M_{2} & = & 1.609 \times 28.01\\ & = & \textbf{45.1 g/mol}\\\end{array}\\\text{The molar mass of the unknown gas is $\large \boxed{\textbf{45.1 g/mol}}$}$

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3 years ago

2 (NH4)2Cr2O7 how many atoms​

2 (NH4)2Cr2O7 how many atoms