Answered

Explore Westonci.ca, the premier Q&A site that helps you find precise answers to your questions, no matter the topic. Explore thousands of questions and answers from knowledgeable experts in various fields on our Q&A platform. Discover in-depth answers to your questions from a wide network of professionals on our user-friendly Q&A platform.

1-How many atoms are present in 4.0mol of sodium?
2-Convert 3.01 x 1023 atoms of Silicon to moles of Silicon?


Sagot :

Part 1:    If 1 mol = 6.022 x 10^23 atoms of anything, including Na, then,

4.0 mol Na = 4 x 6.022 x 10^23 atoms Na = 2.4 x 10^24 atoms Na 

Part 2:  3.01E23 / 6.022E23 and the answer comes out to .49983394 you would then round this to .500 with significant figures. Hope I helped. :)

1=2.4*10^24 atoms NA


2= .49983394 round this to .500

Hope this helps!