11. Drawing the Graph
Mass vs Volume
SER
20
15
10
2
4
Nu<...
Chemistry, 20.10.2020 18:01 raedusty3200
11. Drawing the Graph
Mass vs Volume
SER
20
15
10
2
4
Nu
12. Find the slope of the line (density of the substance);
Questions and Problems
Q1A metal object has a mass of 8 37 2. When it was placed in a graduated cylinder
containing 20.0 ml. of water, the water level rose to 23.1 mul
a) What is the density of the metal (Show calculation?
a) What is the identity of the metal (see Reference Table S)
Q2What is the mass of a solution that has a density of 0 775 gm. and a volume of
500 ml?
Q3What is the volume of a solution that has a density of 12 g ml, and mass of 185?
No
Answers: 2
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Phosphoric acid is a triprotic acid ( =6.9×10−3 , =6.2×10−8 , and =4.8×10−13 ). to find the ph of a buffer composed of h2po−4(aq) and hpo2−4(aq) , which p value should be used in the henderson–hasselbalch equation? p k a1 = 2.16 p k a2 = 7.21 p k a3 = 12.32 calculate the ph of a buffer solution obtained by dissolving 18.0 18.0 g of kh2po4(s) kh 2 po 4 ( s ) and 33.0 33.0 g of na2hpo4(s) na 2 hpo 4 ( s ) in water and then diluting to 1.00 l.
Answers: 3
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Draw the aromatic compound toluene (methylbenzene). show all hydrogen atoms, including those on the ring.
Answers: 1
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Answers: 1
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