What mass is represented by $14.8 \cdot m o l$ $14.8*mol$ $barium chromate$ $"barium chromate"$ , and by $1.23 \times 10^{22}$ $1.23xx10^22$ chlorine molecules?

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What mass is represented by $14.8 \cdot m o l$ $14.8*mol$ $barium chromate$ $"barium chromate"$ , and by $1.23 \times 10^{22}$ $1.23xx10^22$ chlorine molecules?

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Answer 1 · 2017-04-12T17:46:34

We have under $4 \cdot k g$ $4*kg$ of $barium chromate$ $"barium chromate"$ ............and under $2 \cdot g$ $2*g$ of $C l_{2}$ $Cl_2$ .

Explanation:

The molar mass of $barium chromate$ $"barium chromate"$ is $253.37 \cdot g \cdot m o l^{- 1}$ $253.37*g*mol^-1$ . And thus the mass of the given quantity is $14.8*cancel(mol)xx253.37*g*cancel(mol^-1)=3750*g$ .

For the $Cl_2$ molecule, we solve the quotient:

$(1.23xx10^22*"chlorine molecules")/(6.022xx10^23*"chlorine molecules"*mol^-1)=0.0204*mol$ .

Since the chlorine molecule has a molar mass of $70.90*g*mol^-1$ , the mass of dichlorine is $70.90*g*mol^-1xx0.0204*mol=1.45*g$

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What mass is represented by $14.8 \cdot m o l$ $14.8*mol$ $barium chromate$ $"barium chromate"$ , and by $1.23 \times 10^{22}$ $1.23xx10^22$ chlorine molecules?

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What mass is represented by 14.8*mol14.8⋅mol14.8*mol "barium chromate"barium chromate"barium chromate", and by 1.23xx10^221.23×10221.23xx10^22 chlorine molecules?

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Explanation:

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What mass is represented by $14.8 \cdot m o l$ $14.8*mol$ $barium chromate$ $"barium chromate"$ , and by $1.23 \times 10^{22}$ $1.23xx10^22$ chlorine molecules?