Answered

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Please help!!

How many O2 molecules occupy a 1.0 L flask at 65°C and
103.7 kPa?
Select one:
O a. 28 molecules
O b. 2.2 x 1022 molecules
O c.
1.1 x 1023 molecules
O d.
1.6 x 1025 molecules
e. 1.7 x 1025 molecules

Please Help How Many O2 Molecules Occupy A 10 L Flask At 65C And 1037 KPa Select One O A 28 Molecules O B 22 X 1022 Molecules O C 11 X 1023 Molecules O D 16 X 1 class=

Sagot :

Answer:

B, 2.22×10^22 molecules

Explanation:

Given PV=nRT, n=PV/RT

n=103.7×1.0/8.314×(65+273.15)

= 0.0368858... moles

Given n= number of particles/avogadros number

number of particles=n×avogadros number

number of particles = 0.03688...×6.02x10^23

= 2.22×10^22 molecules

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