Question
(a) How many atoms of helium gas fill a spherical balloon of diameter 30.8 cm at...
(a) How many atoms of helium gas fill a spherical balloon of diameter 30.8 cm at 19.0°C and 1.00 atm? atoms (b) What is the average kinetic energy of the helium atoms? (c) What is the rms speed of the helium atoms? km/s
Answers
soluton)(a) do 38cm Rad 3. ISAC r=1 sim olsum T14C 11 23 27 P latma 1013 los pa Number of aloma NE? PVEART (9 ) (1.13 xlo ( *)(1 ) () (8.32) (27) n (1011 103) (4x) (0.154) NA 6.022 xlo alones (8.914) (291) In 0.638) moles N = n(NA) = (0.638) (6.022x10 ) IN- 3.842 x 10 Jalons (6) Average kinetic energy, klarg = ? KE(AVE) = (2) (ka) (T) NA 16.022xl KE (aug) - 6.047 1021 (0) KMS speed, Voms = ? Vers 1 M=MNA M- 4 x 1g 4g M = 0.0ohko (NA 66uxlo 18) 3x8.314 x 282 Vrms. 0.ooh voms - 1348.85 /mL Trong 1.349 knals (m [voms - 1.35) kuls
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