WILL SOMEONE PLS HELP ME!!!!!???!

Question

anonymous · Answer

@abb0t are you good in chemistry

abb0t · Answer

No.

chmvijay · Answer

what is the question @lala2

chmvijay · Answer

@abb0t will help you :)

abb0t · Answer

You need to find the molar mass of each compound given and then divide by that mass. 
To find the molar mass, you need to add the mass of each compound (which you can find on the periodic table) multiplied by the number of atoms. For instance: $\sf \color{Red}{H_2}$ means there are TWO hydrogen atoms. So, to find molar mass you would have: $\sf \color{blue}{2 \times(molar~mass~of~1~hydrogen~atom) \frac{grams}{mol} =2 \times (1.008)\frac{grams}{mol}} = 2.016 \frac{g}{mol}$

anonymous · Answer

could you help me solve for the first one?

anonymous · Answer

@JoannaBlackwelder  please please help!

joannablackwelder · Answer

Are you sure the answers that are already filled in are correct?

anonymous · Answer

yeah pretty sure!

joannablackwelder · Answer

Hmm, then I don't think I should help you. I get some different numbers for the first row than what you have.

anonymous · Answer

oh gosh okay I really don't know what im gonna do

joannablackwelder · Answer

Sorry! I would ask the teacher why the number of moles of the compound NaCl is different from the number of moles of Na.

anonymous · Answer

@abb0t could you please help me more?

anonymous · Answer

@abb0t !!!