tiny1400 tiny1400
  • 04-01-2016
  • Chemistry
contestada

what is the mass of 9.0 x 10^17 molecules of He gas at STP

Respuesta :

Billymkhoi
Billymkhoi Billymkhoi
  • 04-01-2016
(9.0*10^17 He molecules)* (1 mol He/ (6.02*10^23 He molecules))= 1.5*10^(-6) mol He.

1.5*10^(-6) mol He* (4.00 g He/ 1 mol He)= 6.0*10^(-6) g He.

The mass of 9.0*10^17 He molecules at STP is 6.0*10^(-6) g He~
Answer Link

Otras preguntas

Determine whether the sequence coverage or diverges. If it converges, give the limit. 48, 8, 4/3, 2/9, ...
Explain how a species can evolve through natural selection.
Which of the following can be considered fossils? a. a 1 billion year-old rock. b. a 1 billion year-old piece of amber. c. a 1 billion year-old piece of amber w
Write a system of equations with a solution (4,–3)
How many atoms are in 0.750 moles of zinc?
Why was is difficult for the Arab people to form one nation?
Which of the following statements is true concerning LUCA? (1) LUCA was a cell. (2) All life on Earth evolved from LUCA. (3) LUCA probably existed probably arou
The height of a rectangular prism with a 20 cm by 12 cm base and a 30 cm diagonal.find the unknown dimension
What is biogeography and what does it provide?
After what happened on April 19 can war between the colonies and Great Britain be avoided?