radomes.openskiesproject.org
Belistwi1n8tron
Belistwi1n8tron Belistwi1n8tron
  • 07-09-2016
  • Chemistry
Answered

how many moles of silicon are in 245 g of silicon? a. 8.72 mol b. 28.0 mol c. 1.10 10-1 mol d. 6.90 103 mol

Verified Answer :

Willchemistry
Willchemistry Willchemistry
  • 12-09-2016

Atomic mass silicon = 28.085 u

1 mol Si ---------------- 28.085 g  
?  ------------------------ 245 g

245 x 1 / 28.085 => 8.72 mol

answer A

Answer Link

Related Questions

what is used as evidence for continental drift
who over threw the nobles with the support of common people
Where is the division sign on the iPhone keyboard
Which of the following are solutions to environmental problems in the region coordination of environmental efforts between sectors enforcement of environmental
Whats pathway in the female reproduction system
What is phylogeny used for
Every day Katie looks for seashells on the beach She has 28 shells in her collection Katie finds 12 more shells each day Write an inequality to determine the nu
What particle will balance the following nuclear equation
Definition of lava plateau
Matthew has 12 pencils Three of them do not have erasers on the end 4 are green 2 is orange 4 are brown What fractions of the MampMs are brown