Chemistry, 04.02.2020 21:44 MickeyxX7096
A7.06% aqueous solution of sodium bicarbonate has a density of 1.19 g/ml at 25°c
what is the molarity of the solution
0.706 m
0.0840 m
0.904 m
1.00 m
a 7.06% aqueous solution of sodium bicarbonate has a density of 1.19 g/ml at 25°c
what is the molality of the solution
0.904 m
1.00 m
0.0840 m
0.706 m
a 8.05 % ch3oh(aq) has a density of 0.976 g/ml at 18°c
what is the mole fraction of the solvent in the solution?
0.953
8.05
91.95
0.0469
an aqueous solution of cesium chloride is prepared by dissolving 52.3 g cesium chloride in 60.0g of water at 25°c. the volume of this solution is 63.3 ml . what is the molality of the solution?
0.311 m
4.91 m
2.77 m
5.18 m
an aqueous solution of cesium chloride is prepared by dissolving 52.3 g cesium chloride in 60.0g of water at 25°c. the volume of this solution is 63.3 ml . what is the molarity of the solution?
4.91 m
2.69 m
5.18 m
2.77 m
the vapor pressure of ethanol, c2h5oh is 100.0 torr at 35 °c. calculate the vapor pressure of the solution formed by dissolving 28.8 g of alpha naphthol, c10h8o, in
36.8 g of c2h5oh. assume alpha naphthol to be nonvolatile at this temperature.
20.0 torr
43.9 torr
80.0 torr
56.1 torr
both ethanol, c2h5oh and propanol, c3h7oh, are volatile. at 35 °c, the vapor pressure of pure ethanol is 100 torr and that of propanol is 37.6 torr. what is the vapor pressure at this temperature of a solution is formed by mixing 36.9 g of ethanol and 12.0 g propanol.
15.3 torr
50.1 torr
84.7 torr
87.5 torr
the boiling point of pure ethanol, c2h5oh, is 78.4 ∘c. its boiling point elevation constant is 1.22 °c/m. what is the boiling point of a solution formed by dissolving 8.00 g of alpha-naphthol (c10h7oh) in 100.0 g ethanol.
91.3 °c
79.1°c
97.6 °c
78.5°c
the freezing point of ccl4 is -22.92°c. calculate the freezing point of the solution prepared by dissolving 17.5g of pyrazine (c4h4n2) in 1250g of ccl4. the freezing point depression constant for ccl4 is 29.8 °c/m.
-22.5 °c
-23.34 °c
-17.71 °c
-28.13 °c
consider the following aqueous solutions:
a. 0.10 m nh4no3,
b. 0.10 m fe(no3)3
c. 0.10 m ba(no3)2
d. 0.10 m nh2conh2
arrange the following in increasing order (smallest to largest) order of osmotic pressure
c < b < a < d
a < d < c < b
d < a < c < b
a < c < b < d
consider the following aqueous solutions:
a. 0.10 m nh4no3,
b. 0.10 m fe(no3)3
c. 0.10 m ba(no3)2
d. 0.10 m nh2conh2
arrange the following in increasing order (smallest to largest) order of freezing point. the freezing point of pure water is 0.00 ∘c and its freezing point depression constant is 1.86 ∘c/m
d < a < c < b
b < c < a < d
c < b < a < d
a < c < b < d
consider the following aqueous solutions:
a. 0.10 m nh4no3,
b. 0.10 m fe(no3)3
c. 0.10 m ba(no3)2
d. 0.10 m nh2conh2
arrange the following in increasing order (smallest to largest) order of normal boiling point. the normal boiling point of pure water is 100.00 ∘c and its boiling point elevation constant is 0.512 ∘c/m
c < b < a < d
d < a < c < b
a < c < b < d
b < c < a < d
a solution is prepared by dissolving 1.22 g of compound in enough water to make up 262 ml in volume. the osmotic pressure of the solution is found to be 30.3 torr at
35.0 °c. calculate the molar mass of the compound.
257 g/mol
2950 g/mol
3.88 g/mol
44.7 g/mol
i'd be really indebted to anyone who could me with this
Answers: 1
Chemistry, 22.06.2019 12:00
What is the lowest number energy level where a d sublevel is found
Answers: 1
Chemistry, 22.06.2019 23:00
The data below were determined for the reaction shown below. s2o82– + 3i – (aq) → 2so42– + i3– expt. # [s2o82–] (m) [i –] (m) initial rate 1 0.038 0.060 1.4 × 10 – 5 m/s 2 0.076 0.060 2.8 × 10 – 5 m/s 3 0.076 0.030 1.4 × 10 – 5 m/s the rate law for this reaction must be:
Answers: 1
Chemistry, 22.06.2019 23:50
Be sure to answer all parts. the following equilibrium constants were determined at 1123 k: c(s) + co2(g) ⇌ 2co(g) k'p = 1.30 × 1014 co(g) + cl2(g) ⇌ cocl2(g) k''p = 6.00 × 10−3 calculate the equilibrium constant at 1123 k for the reaction: c(s) + co2(g) + 2cl2(g) ⇌ 2cocl2(g) 4.68 × 10 9 (enter your answer in scientific notation.) write the equilibrium constant expression, kp:
Answers: 3
Chemistry, 23.06.2019 01:30
If a particle has z = 25 and 23 electrons, what is its charge?
Answers: 2
A7.06% aqueous solution of sodium bicarbonate has a density of 1.19 g/ml at 25°c
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