Mixture and Comparison Problems
SSAT Middle Level · Flashcards · Recall
SSAT MIDDLE LEVEL · FLASHCARDS
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QUESTION
What is the weighted-average equation for a mixture percent
r
r
r
from parts
a
a
a
and
b
b
b
?
QUESTION
What is the ratio form (alligation) for amounts when mixing
p
%
p\%
p
%
and
q
%
q\%
q
%
to get
r
%
r\%
r
%
?
QUESTION
State the equation for pure solute after adding
w
w
w
L of water to
V
V
V
L of
c
%
c\%
c
%
solution.
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ANSWER
c
100
V
=
c
new
100
(
V
+
w
)
\frac{c}{100}V=\frac{c_{\text{new}}}{100}(V+w)
100
c
V
=
100
c
new
(
V
+
w
)
. Conserves the solute amount while increasing the volume by added water to relate initial and new concentrations.
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