Phosphorus has the molecular formula P4, and sulfur has the molecular formula S8. How many grams of phosphorus contain the same number of molecules as 4.23 g of sulfur? (A) 0.490 g (B) 2.04 g (C) 4.08 g (D) 4.23 g

Given Number of molecules of P4 = number of molecules of S8 moles of P4 = moles of S8 mass of…

Answered: Phosphorus has the molecular formula…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Phosphorus has the molecular formula P_4, and sulfur has the molecular formula S₈. How many grams of phosphorus contain the same number of molecules as 4.23 g of sulfur?

(A) 0.490 g

(B) 2.04 g

(D) 4.23 g

Expert Solution

Step 1

Given

Number of molecules of P₄ = number of molecules of S₈

moles of P₄ = moles of S₈

$\frac{mass of P_{4}}{molar mass of P_{4}} = \frac{mass of S_{8}}{molar mass of S_{8}}$

$\frac{mass of P_{4}}{31 x 4} = \frac{4.23 g}{32 x 8}$

mass of P₄ = 2.0489 g

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