Potassium Chloride = KCl
KCl has a molar mass of: 39.0983g+35.4530g=74.5513g
The number of moles of KCL we are adding is:
2g/(74.5513g/mol) = 0.02683 mol
But you have to keep in mind that salts in
water dissociate:
KCl -> K+ + Cl-
So 1 mole KCl is 2 osmoles (because it’s
two particles)
So if you add 0.02683 moles, you are adding
0.02683*2 = 0.05366 osmoles.
If you dissolve them in 1 liter, you have a solution 0.05366 OsM = 53.66 mOsM
D5W = dextrose 260 mOsM
1/2 Normal Saline =
has half of the normal saline concentration - a normal saline solution has the
same sodium chloride concentration as blood serum = 154 mOsm
You have to sum up all the osmolarities:
<span>= </span>53.66 mOsM + 154 mOsM + 260 mOsM = 467.66 mOsM
Answer:
C. 1:30
Explanation:
The toy car is .5 feet long and the actual car is 15 feet long
This gives you a ratio of
.5:15
Now for everything you have to remember this
.5:15
=1:30
=2:45
=3:60
C is the only answer that matches any of the ratios above.
Even if you went farther in the ratios none of them would match this ratio.
Hope this helped.
=)
Answer:
a. 2NAOH + H2SO4 —> NA2SO4 + 2H2O
b. The concentration of the acid is 0.0638M
Explanation:Please see attachment for explanation
Answer: The percent yield of zinc carbonate is 5.91 %
Explanation:
To calculate the moles :
is the limiting reagent as it limits the formation of product and 
is the excess reagent.
According to stoichiometry :
1 mole of produce = 1 mole of
Thus 1.7 moles of will produce=
of 
Theoretical yield of 
percentage yield = 
Answer: Fluorine (see explanation)
Explanation:
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