Calculate the mass in grams of each sample. A) 7.44 x 10^20 H2O2 molecules m=?g

Question

Calculate the mass in grams of each sample.
A) 7.44 x 10^20 H2O2 molecules m=?g Express your answer using three significant figures
B) 3.3 x 10^22 SO2 molecules m=?g Express your answer using two singinficant figures
C) 4.3 x 10^25 O3 molecules m=?g Express Your answer using two significant figures
D) 9.54 x 10^19 CH4 molecules m=?g Express your answer using three significant figures Calculate the mass in grams of each sample.
A) 7.44 x 10^20 H2O2 molecules m=?g Express your answer using three significant figures
B) 3.3 x 10^22 SO2 molecules m=?g Express your answer using two singinficant figures
C) 4.3 x 10^25 O3 molecules m=?g Express Your answer using two significant figures
D) 9.54 x 10^19 CH4 molecules m=?g Express your answer using three significant figures
A) 7.44 x 10^20 H2O2 molecules m=?g Express your answer using three significant figures
B) 3.3 x 10^22 SO2 molecules m=?g Express your answer using two singinficant figures
C) 4.3 x 10^25 O3 molecules m=?g Express Your answer using two significant figures
D) 9.54 x 10^19 CH4 molecules m=?g Express your answer using three significant figures

Explanation / Answer

a)0.042 grams

for 1 mole=6.023*1023 molecules

mass= 34 * (7.44*1020)/(6.023*1023) =0.042 grams

like wise we get

b)3.506 grams

c)3426.86 grams

d)2.53 milli grams

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