## Lukecrayonz 4 years ago How many kilograms are in 4 moles of Na2CO3?

1. anonymous

Whats the molar mass of that? I don't have a periodic table so I keep asking

2. Lukecrayonz

zbay, http://www.webqc.org/mmcalc.php for future use:)

3. Lukecrayonz

Molar mass of Na2CO3 is 105.9886 g/mol

4. anonymous

$4 mole Na_2CO_3(\frac{105.99 g Na_2CO_3}{1 mole Na_2CO_3})(\frac{1 kg}{1000 g })=.424 kg Na_2CO_3$

5. anonymous

Is the equation loading or does it look all crazy for you?

6. Lukecrayonz

Looks fine:)

7. anonymous

ok cool

8. anonymous

let me first tell u how to calculate molar mass ok? u need to find of Na2CO3 so add the molar masses of the elements together multiplying them with their respective subscripts so here it goes like this Na= 23 C=12 O=16 so Na2CO3=2(23)+12+3(16)=46+12+48=96

9. anonymous

$46+12+48=106$

10. anonymous

now 1 mole of sodium carbonate has 96 grams so 4 moles will have 4x106=424 oh yeah sry

11. anonymous

oops sry now that means one mole of Na2CO3 will have 106 grams

12. anonymous

thanks

13. anonymous

To get the final answer, you need to convert to kg (:.

14. anonymous

well that is easy enough... from here the question can b done by the asker himself yhe main question has been solved isnt it? even so the answer is .106 kg ok?

15. anonymous

16. anonymous

yeah...

17. anonymous

hah i again forgot to multiply by 4 wat a shame yeah k the answer is .424 kg i m really sry

18. anonymous

Don't be sorry! We're all learning here.