(a) Read the following burette and graduated cylinder and record your answer in the spaces provided below. -30 6 -20 7 -10 (i) Burette reading: (ii) Graduated cylinder reading: (iii) What is the name of the level of the liquid in the burette which we read? (iv) Water is a solvent. Therefore, it dissolves compounds and compounds. The H-O-H angle of water is (v) When ammonia is mixed with water, it and produces ions which make the solution basic. (vi) Water exists in three , namely solid, liquid and gas. As a solid, water is called and as a gas water is called (vii) The for H20(g) and H2O(t) are -241.85 kJ/mol and -285.85 kJ/mol, respectively. Therefore, the of water is +44.00 kJ/mol. 1 (b) An unknown mass of Na3PO4(s) is dissolved in water to form 50.00 mL of solution. This is Solution A. Then 10.00 mL of Solution A is diluted with water to 50.00 mL. The final solution is Solution B. 20.00 mL of Solution B contains 4.408 x 1020 sodium ions. (NA = 6.022 x 1023 mol-1) Calculate the mass of Na3PO4(s) that was dissolved to form Solution A.
(a) Read the following burette and graduated cylinder and record your answer in the spaces provided below. -30 6 -20 7 -10 (i) Burette reading: (ii) Graduated cylinder reading: (iii) What is the name of the level of the liquid in the burette which we read? (iv) Water is a solvent. Therefore, it dissolves compounds and compounds. The H-O-H angle of water is (v) When ammonia is mixed with water, it and produces ions which make the solution basic. (vi) Water exists in three , namely solid, liquid and gas. As a solid, water is called and as a gas water is called (vii) The for H20(g) and H2O(t) are -241.85 kJ/mol and -285.85 kJ/mol, respectively. Therefore, the of water is +44.00 kJ/mol. 1 (b) An unknown mass of Na3PO4(s) is dissolved in water to form 50.00 mL of solution. This is Solution A. Then 10.00 mL of Solution A is diluted with water to 50.00 mL. The final solution is Solution B. 20.00 mL of Solution B contains 4.408 x 1020 sodium ions. (NA = 6.022 x 1023 mol-1) Calculate the mass of Na3PO4(s) that was dissolved to form Solution A.
Chemistry
10th Edition
ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
Chapter11: Properties Of Solutions
Section: Chapter Questions
Problem 137CP: In some regions of the southwest United States, the water is very hard. For example, in Las Cruces,...
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Transcribed Image Text:(a) Read the following burette and graduated cylinder and record your answer in the spaces
provided below.
-30
6
-20
7
-10
(i) Burette reading:
(ii) Graduated cylinder reading:
(iii) What is the name of the level of the liquid in the burette which we read?
(iv) Water is a
solvent. Therefore, it dissolves
compounds and
compounds. The H-O-H angle of water is
(v) When ammonia is mixed with water, it
and produces
ions which make the
solution basic.
(vi) Water exists in three
, namely solid, liquid and gas. As a
solid, water is called
and as a gas water is called
(vii) The
for H20(g) and H2O(t) are
-241.85 kJ/mol and -285.85 kJ/mol, respectively.
Therefore, the
of water is +44.00 kJ/mol.
1
(b) An unknown mass of Na3PO4(s) is dissolved in water to form 50.00 mL of solution. This
is Solution A.
Then 10.00 mL of Solution A is diluted with water to 50.00 mL. The final solution is
Solution B.
20.00 mL of Solution B contains 4.408 x 1020 sodium ions.
(NA = 6.022 x 1023 mol-1)
Calculate the mass of Na3PO4(s) that was dissolved to form Solution A.
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