🤓 Based on our data, we think this question is relevant for Professor Qin's class at UMASS.

We are asked what is the identity of the metal if the compound contains 65.57 % Cl by mass.

$\overline{){\mathbf{\%}}{\mathbf{}}{\mathbf{Cl}}{\mathbf{}}{\mathbf{=}}{\mathbf{}}\frac{\mathbf{molar}\mathbf{}\mathbf{mass}\mathbf{}\mathbf{Cl}}{\mathbf{molar}\mathbf{}\mathbf{mass}\mathbf{}{\mathbf{MCl}}_{\mathbf{3}}}{\mathbf{\times}}{\mathbf{100}}}\phantom{\rule{0ex}{0ex}}\mathbf{65}\mathbf{.}\mathbf{57}\mathbf{}\mathbf{=}\mathbf{}\frac{\mathbf{3}\mathbf{(}\mathbf{35}\mathbf{.}\mathbf{45}\mathbf{)}}{\mathbf{molar}\mathbf{}\mathbf{mass}\mathbf{}{\mathbf{MCl}}_{\mathbf{3}}}\mathbf{\times}\mathbf{100}\phantom{\rule{0ex}{0ex}}\mathbf{molar}\mathbf{}\mathbf{mass}\mathbf{}{\mathbf{MCl}}_{\mathbf{3}}\mathbf{=}\mathbf{}\frac{\mathbf{3}\mathbf{(}\mathbf{35}\mathbf{.}\mathbf{45}\mathbf{)}}{\mathbf{65}\mathbf{.}\mathbf{57}}\mathbf{\times}\mathbf{100}$

**molar mass MCl _{3 }= 162.19 g/mol**

A metal (M) forms a compound with the formula MCl_{3}.

If the compound contains 65.57 % Cl by mass, what is the identity of the metal?

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Our tutors have indicated that to solve this problem you will need to apply the Mass Percent Formula concept. You can view video lessons to learn Mass Percent Formula. Or if you need more Mass Percent Formula practice, you can also practice Mass Percent Formula practice problems.

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Based on our data, we think this problem is relevant for Professor Qin's class at UMASS.