A salt crystal has a mass 0.14mg,How many NaCl formula units does it contain?

Express your answer using two significant figures.

Question

A salt crystal has a mass 0.14mg,How many NaCl formula units does it contain? 

Express your answer using two significant figures.

chmvijay · Answer

what is molecular weight of NaCl can u tell

chmvijay · Answer

LOL :)

chmvijay · Answer

58.44 g of NaCl contains =6.023 *10^23 molecules of the NaCl
then  mean0.00014 gram(0.14mg ) of  = 0.00014*6.023*10^23 /58.44

anonymous · Answer

thank you!! could you help me with another lol

anonymous · Answer

How would I write sodium carbonate and lead (II) nitrate, write as a complete ionic equation and as a net ionic equation, thank you soooo much for your help!!!