Quiz 5 Chemla Sprine 2012 NAMC KEY
Each question is worth 8 points unless marked otherwise, totaling 40 points
1.) lf 1.000 g of H2SOa is dissolved in watgp to make 1.000 liter of solution, what is the molarity?
r ^rrft^ Lt S.n \' l/nt'& ' ' 4 ' A'- /? ' I F
H3fod). +aH Nor + a |{.O +r(No, )'
2.) Jane needs to make 500.00 mL of 0.1350 M KBr solution. She has a stock solution of 3.0000 M
KBr solution. How many mL of the stock solution does she need to add to a 500.00 mL flask to
make her new solution?
lt4'{'=M'Vt l.r\= Ix) / ,)
(o,;ooooL) (t' r;ram) = (x ) (3'oooo M
y=
3.) A sample of 5.53 g of Mg(OH)2 is added to 25.0 mL of 0.200 M HNO3. (8pts per part)
a. Write the balanced chemical equation
b.
5,533^ l'^"oeL-
5t.9eL,(
d
How muqh of each reactant is present before reaction iin moles?
(c ,aoo r1\( a' oaso L)
O, o,qrt\ n **&a l,kbil),
= O, oof oo ,t'"o&a f{ruOa
C),Ol OaoM
0"o?Qro
done?
No HN03
O. OoA5 o *u(^
0 , Ootoo '7t4!04
0, oq{6 p ^{^
rr.NdJ.
*.o
tybl)" ,PJ
0.MSD*ra(u = 0,OqA3 *to&a
l"gbul,
