Answer to Question #199837 in General Chemistry for Shara Amarieh

Question #199837

DIRECTIONS: A. How many atoms are in each of the following samples?

a.11.3g Pb

b.44.2g Mg


B. Calculate the mass in grams of each of the following samples.

a.1.50x10^18 atoms Ne

b.8.35x10^21molecules CH4


1. What is the percent composition of the following compounds? a.Naphtalene(C10 H8 )

b.Sucrose(C12 H22 O11 )

c.Aluminum sulfate(Al2(SO4)3


1
Expert's answer
2021-05-31T02:26:00-0400

A) a) Atoms


b) Atoms


B) a) 1,200g

b) 8.67g


1.a) Naphtalene(C10 H8 )

C=93.75%,H=6.25%


b) Sucrose(C12 H22 O11 )

C=42.11%,H=6.43%,O=51.46%


c)Aluminum sulfate(Al2(SO4)3

Al=15.79%,S=28.07%,O=56.14%


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