Calculate the molality of a solution prepared by dissolving 75.8 g K₂Cr₂O7 (294.19 g/mol) in 1.50 L of water.maalityA. 0.172 mC. 0.515 mD. 0.582 mB. 0.204 m How many grams of Na2S (78.05 g/mol) must be dissolved in 250.0 mL of water in order to create a solution witha freezing point equal to -1.04°C? Kf for water = 1.86°C/m.O3.64 gB. 8.27 g710.9 g11.6 g

Given : 1. Mass of K2Cr2O7 = 75.8 gm Molar Mass of K2Cr2O7 = 294.19 g/mol Volume of water = 1.50…

How many grams of Na2S (78.05 g/mol) must be dissolved in 250.0 mL of water in order to create a solution with a freezing point equal to -1.04°C? Kf for water = 1.86°C/m. O 3.64 g 2 B. 8.27 g 710.9 g 11.6 g

How many grams of Na2S (78.05 g/mol) must be dissolved in 250.0 mL of water in order to create a solution with a freezing point equal to -1.04°C? Kf for water = 1.86°C/m. O 3.64 g 2 B. 8.27 g 710.9 g 11.6 g

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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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.

Question

Calculate the molality of a solution prepared by dissolving 75.8 g K₂Cr₂O7 (294.19 g/mol) in 1.50 L of water.
maality
A. 0.172 m
C. 0.515 m
D. 0.582 m
B. 0.204 m

How many grams of Na2S (78.05 g/mol) must be dissolved in 250.0 mL of water in order to create a solution with
a freezing point equal to -1.04°C? Kf for water = 1.86°C/m.
O
3.64 g
B. 8.27 g
710.9 g
11.6 g

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