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

Find a rational number between -1/4 and 2/5
Mixed economies are combinations of market and command economies and sometimes traditional economies. Which of the following economies are correctly called mixe
Find the inverse of f (x)=log(subscript 4) x
5 letter word foramount of work done per second
Scientists who study Atlantic salmon have found that the oxygen consumption of a yearling salmon O is given by the function O=100. 3^(3s/5) , where s is the spe
why did some colonist enslave native Americans and Africans
Look below for question:
the first armed conflicts of the revolutionary war
Find the inverse of f (x)=log(subscript 4) x
A number is doubled and then increased by seven. The result is ninety three. What is the origonal number