i need help on my homework!!!

 

 

Thanks,

 

Nikki

me me me!!!!!!!!! :D

so :dozey:

really...?

 

Okay, i did a lab on mass and mole relationships in a chemical reaction and have to fid the percent error.

 

We used NaCl and NaHCO_3

it is for the experimental mole ratio

then

?

 

The theoretical molee ratio is 1:1

 

and i got the experimental to be .37 mol NACl and .38 mol NaHCO_3

what about the theoric? :stunned:

i got 1:1 ratio.....for the equation NaHCo_3+HCl(aq) >>NaCl+Co_2+H_2_O

 

 

and the simplest whole number ratio that i got for .37 and .38 is 1:1 but then that means that my percent error is o%

why there's no oxygen in the left part of the equation :stunned:

i fixed it...now there is :) sorry

have you the molair masse(don't know how it is call in english)

for which substances?

for NaHCo_3 it is 83.996

and for NaCl it is 58.433

so for NaHCO_3 and hcl

:rolleyes:

hcl..u don't need the mass cuz u are finding the ratio between NaHCO_3 and NCl

do you got the masse?

it would help u that i had 3.1 g of NaHCO_3 and 2.2 g of NCl

do you they ask nomber of mole?

yes and then you find the simplest whole number ratio between them.

do you know how to find it?

you divide the number of grams by molar mass to get the number of moles

i think i got the answer...thanks for helping me Lea :)

and what does it give?