Answered

From simple questions to complex issues, IDNLearn.com has the answers you need. Ask anything and receive comprehensive, well-informed responses from our dedicated team of experts.

Consider the calculation of the pressure in kilopascals exerted by 1.25 g of nitrogen gas in a flask of volume 250 mL (0.250 dm3) at 20°C. The amount of N2 molecules (of molar mass M  28.02 g mol 1) present is

Sagot :

Eduard22slyidn

The amount of the nitrogen gas, N₂ molecules present is 2.68×10²² molecules

Avogadro's hypothesis

1 mole of N₂ = 6.02×10²³ molecules

How to determine the mole of N₂

We'll begin by calculating the number of mole of N₂. This can be obtained as follow:

  • Mass of N₂ = 1.25 g
  • Molar mass of N₂ = 28.02 g/mol
  • Mole of N₂ =?

Mole = mass / molar mass

Mole of N₂ = 1.25 / 28.02

Mole of N₂ = 0.0446 mole

How to determine the molecules of N₂ present

From Avogadro's hypothesis,

1 mole of N₂ = 6.02×10²³ molecules

Therefore,

0.0446 mole N₂ = 0.0446 × 6.02×10²³

0.0446 mole N₂ = 2.68×10²² molecules

Thus, the molecules of N₂ present is 2.68×10²² molecules

Learn more about Avogadro's number:

https://brainly.com/question/26141731

#SPJ1

Thank you for joining our conversation. Don't hesitate to return anytime to find answers to your questions. Let's continue sharing knowledge and experiences! Thank you for choosing IDNLearn.com. We’re here to provide reliable answers, so please visit us again for more solutions.