wdevinier wdevinier
  • 12-07-2017
  • Chemistry
contestada

. What is the mass, in grams, of a sample of 7.83 × 1024 atoms of helium (He)?

Respuesta :

zrh2sfo
zrh2sfo zrh2sfo
  • 25-07-2017
moles He = 7.83 x 10^24 / 6.02 x 10^23 =13.0 

mass He = 13.0 mol x 4.00 g/mol = 52.0 g
Answer Link

Otras preguntas

I need help with this
Use the distributive property to remove the parentheses 2(7+x)
What is the answer please help me
Increasing feelings of nationalism among many groups let to which consequence after world war 1?
When a spider dies, why does its legs curl up? 18 points!!!
20- -4 what is the answer someone tell me
which one of the following choice pays actual charges based on the treatment given to a patient
Which phrase can be used to accurately complete the diagram? industry in the United States agrees to federal regulation industry in the United States becomes
Can somebody help me with these spanish fill ins? thanks
a faucet drips at a rate of 5.20 mL each minute. How many liters of water will the faucet lose in 72.0 hours? (1000 mL= 1 liter ; 60 min 1 hr)