Calculating Zn Required for 2.00g of Au in Chemical Reaction

AI Thread Summary
To calculate the grams of Zn required for 2.00g of Au in the given chemical reaction, the user applied stoichiometric conversions. The calculation shows that 1.10g of Zn is needed, using the molar mass of Au and the stoichiometric ratios from the balanced equation. The response confirms that the method is correct but advises caution with ratios and significant digits in calculations. Overall, the user successfully demonstrates an understanding of stoichiometry in this context. Proper attention to significant figures is essential for accuracy in chemical calculations.
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Hey guys could you tell me if I got the right answer; my teacher hasn't went over this material and it is due tomorrow.

Given the following reaction, how many grams of Zn are required to obtain 2.00g of Au?
4CN^{-1}~+~3Zn~+~2Au(CN)_4^{-1}~~-->~3Zn(CN)_4^{-2}~+~2Au

(2.00g of Au)(1 mole Au/179.0g of Au)(3 mole Zn/2 mole Au)(65.39g Zn/1 mole Zn) = 1.10g of Zn

Is this the proper way and is my answer correct? Thanks
 
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taht is the correct way of doing it, just be careful of ratios always
 
And one more thing.Use the same # of significant digits when working with molar masses.

Daniel.
 
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