Soru

Question 6 What is the number ofmo ecules in 500cm^3 understandard conditions? A 6.02times 10^23times 0.5 B. 6.02times 10^23times 500 C (22.7)/(0.5)times 6.02times 10^23 D (0.5)/(22.7)times 6.02times 10^23
Çözüm
4.1
(283 Oylar)
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Oğul
Kıdemli · 11 yıl öğretmeni
Uzman doğrulaması
Cevap
To determine the number of molecules in 500 cm³ under standard conditions, we need to use the ideal gas law and Avogadro's number.First, let's recall that under standard conditions (0°C and 1 atm), 1 mole of an ideal gas occupies 22.7 liters (or 22700 cm³).Given:- Volume = 500 cm³- 1 mole of gas occupies 22700 cm³We can set up a proportion to find the number of moles:
Solving for
:
Next, we multiply the number of moles by Avogadro's number (
molecules/mole) to find the number of molecules:
Simplifying this expression:
This matches option D:
Therefore, the correct answer is:D.