budhaithrive budhaithrive

04-08-2016
Chemistry

contestada

How many moles of sodium (Na) do you have in a sample of 9.8 × 10^23 atoms Na?

0.61 mol Na

1.6 mol Na

5.9 mol Na

16.3 mol Na

Respuesta :

Willchemistry Willchemistry

08-08-2016

1 mol ----------- 6.02 x 10²³ atoms Na
( mols Na) ------ 9.8 x 10²³ atoms Na

( mols Na ) = ( 9.8 x 10²³ ) x 1 / 6.02 x 10²³

( mols Na) = 9.8 x 10²³ / 6.02 x 10²³

= 1.6 mols Na

hope this helps!

Answer Link

Otras preguntas

Identify the subject(s) and verb(s) (including helping verbs) in the following sentence. My father built a new shed in the back yard. subject(s) verb(s)

Write the linear inequality shown in the graph. The gray area represents the shaded region

In order to increase the amount of work done, we need to

A student reader is making $5.90 per hour and gets a $0.52 raise. what is the percent increase? (round to the nearest tenth of a percent.)

list the important elements of civil society and their roles and importance in society.

On a compass, what quadrant includes 15 degrees? A.2nd quadrant B.1st quadrant C.4th quadrant D.3rd quadrant

Which minor parties role in the 2000 presidential election contributed to the defeat of the democratic party candidate?

there is a cafe at the park it is 13 meters long and 8 meters wide. what is the area of the cafe

A box contains cards number 1-10. A card is drawn at random, then replaced, and a second card is drawn. What is the probability that the first number is a multi

What country, in an attempt to find an all-water route to asia, sailed west and discovered the new world? was it spain or france?