7 The mass of potassium hydroxride (KOH) to be dissolved in (100 ml) of water toobtain a solution of 0.25Mconcentration is:a) 1.4gb) 4.5gc) 0.025gd) 5.6g .8) Molarity (5g) of NaOH dissolved in 120 ml of solution the molar is:a) 0.75Mb) 1. 04Mc) 1.25Md) 0.5M.9) How many grams of AICI) should be dissolved, to prepare 1 liter of a solutionin which the concentration of Chions 0.6M?a) 240.3 gramsb) 80.1 gramsc) 26.7gramsd) 41.1 grams.10) For the following reaction:2A +3B -→ 2ABMolecular weight AB, = 133.5 g molAtomic a Weights A= 27 & B= 35.5The number of grams of AB. consisting of (12g) interaction of B:a) 26.2gb) 15.04gc) 20gd) 31.4g

Given molarity of KOH = 0.25 M Volume of KOH in mL = 100 mL Mass of KOH = ?

Answered: ) The mass of potassium hydroxide (KOH)…

) The mass of potassium hydroxide (KOH) to be dissolved in (100 ml) of water to obtain a solution of 0.25M concentration is: a) 1.4g b) 4.5g c) 0.025g d) 5.6g .

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

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

7 The mass of potassium hydroxride (KOH) to be dissolved in (100 ml) of water to
obtain a solution of 0.25Mconcentration is:
a) 1.4g
b) 4.5g
c) 0.025g
d) 5.6g .
8) Molarity (5g) of NaOH dissolved in 120 ml of solution the molar is:
a) 0.75M
b) 1. 04M
c) 1.25M
d) 0.5M.
9) How many grams of AICI) should be dissolved, to prepare 1 liter of a solution
in which the concentration of Ch
ions 0.6M?
a) 240.3 grams
b) 80.1 grams
c) 26.7
grams
d) 41.1 grams.
10) For the following reaction:
2A +3B -→ 2AB
Molecular weight AB, = 133.5 g mol
Atomic a Weights A= 27 & B= 35.5
The number of grams of AB. consisting of (12g) interaction of B:
a) 26.2g
b) 15.04g
c) 20g
d) 31.4g

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