25-11-2014
Chemistry

Answered

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

Answer :

Joel0920 Joel0920

25-11-2014

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. :)

Answer Link

Felix101 Felix101

25-11-2014

1=2.4*10^24 atoms NA

2= .49983394 round this to .500

Hope this helps!

Answer Link

Other Questions

An example of a vestigial structure is the a kangaroo pouch b human tail bone c cat forelimb d all of the above

576 hundredths in decimal form

Which of these pairs is in Kingdom Fungi A mushrooms and bacteria B diatoms and water molds C mushrooms and yeast D protist and virus

What is the difference in the role of an operator and the role of a promoter

how did the hundred years war contribute to the breakdown of society

12 x3 10 need the answer fast but i need it right

A bicyclist rides with a constant velocity of 8 ms What would you need to know to calculate the net force on the rider

36 is less than 60 24 40 60 67

Which two rivers join at Sutters point

maralah can drive her 580 miles at a steady speed using 20 gallons of gasoline make rate table showing the number of miles her car can be driven at this speed s