chemistry
posted by Bella on .
Consider the unbalanced equation: Na+Cl2 = NaCl. What mass of NaCl can be produced from 25.0 grams of Chlorine?

1. Balance the equation.
2. Convert 25.0 g Cl2 to moles. moles = gram/molar mass.
3. Using the coefficients in the balanced equation, convert moles Cl2 to moles NaCl.
4. Now convert moles NaCl to grams NaCl. Grams NaCl = moles NaCl x molar mass NaCl.
Post your work if you get stuck. 
FIRST, blance the equation.
2Na + CL2 > 2NaCl
SECOND, get the g ( atomic mass. ) for NaCl and Cl.
NaCLV
2Na 23.00 x 2 = 66.00g
2CL 35.45 x 2 = 70.9g
Add the two together.
NaCal = 137g
ClV
2Cl 35.45 x 2 = 70.9g
Cl = 70.9G
LAST,
Set up your equation, starting with the 25g of Cl you have.
25gCl2 x 1 molCl2/70.9gCl x 2 mol NaCl/1 mol Cl2 = ( Your answer! )
Hope I helped. (: 
SECOND, get the g ( atomic mass. ) for NaCl and Cl.
NaCLV
2Na 23.00 x 2 = 66.00g
2CL 35.45 x 2 = 70.9g
Add the two together.
NaCal = 137g
2 x 23.00 = 46.00, not 66.00
total 2NaCl should be 117, not 137.