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

Question

04-01-2016
Chemistry

contestada

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

Respuesta :

Otras preguntas

Wages. JoAnn works in the publicity office at the state university. She is paid $10 an hour for the first 35 hours she works each week and $15 an hour for every

what colors are birds are attracted 2

what is the cell cycle??

do you know how to say my in Spanish?

What two factors determine the state of rocks and metals Inside the earth?

Which of the following oxides can dissolve in water to form a solution that would turn litmus indicator red in color? a. MgO b. K₂O c. CO₂ d. ZnO e. H₂O

Is STM semantically or acoustically encoded??

what colors are birds are attracted 2

if f(x)=|3x-4|+2, find f (-10)

Billymkhoi Billymkhoi · Answer 1 · 2016-01-04T14:37:03+01:00

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