1. What is the concentration of ethanol (C2H6O) solution that was prepared by dissolving 50.500 g of ethanol into water to a final volume of 750.0 mL? Assume the solution has a density of 1.20 g/mL. % (m/m) = \. 20(9/mi) x 750lmL) =9009 7-m/m) mass OF Solute (cthand) ES0-S 9 X 100 % 9009 a. =S.61% mass of Soluticn b. M Molar mass f cthonol 2. Consider the following chemical equations. Predict if the following solutions would conduct electricity weakly, strongly or not at all. a) KBr(s)→ K* (aq) + Br-(aq) Electicity Strong1y b) NH;(aq) + H20(1) = NH (aq)+OH-(aq) Elcctricity Strongly c) CH1206(s) → C,H1206(aq) hot at all
1. What is the concentration of ethanol (C2H6O) solution that was prepared by dissolving 50.500 g of ethanol into water to a final volume of 750.0 mL? Assume the solution has a density of 1.20 g/mL. % (m/m) = \. 20(9/mi) x 750lmL) =9009 7-m/m) mass OF Solute (cthand) ES0-S 9 X 100 % 9009 a. =S.61% mass of Soluticn b. M Molar mass f cthonol 2. Consider the following chemical equations. Predict if the following solutions would conduct electricity weakly, strongly or not at all. a) KBr(s)→ K* (aq) + Br-(aq) Electicity Strong1y b) NH;(aq) + H20(1) = NH (aq)+OH-(aq) Elcctricity Strongly c) CH1206(s) → C,H1206(aq) hot at all
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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States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
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Questions 1 and 2. All parts
Transcribed Image Text:Solutions & Electrolytes
ASSIGNMENT 7
Date
Name
Lab Meeting
1.
What is the concentration of ethanol (C2H0) solution that was prepared by dissolving 50.500 g of
ethanol into water to a final volume of 750.0 mL? Assume the solution has a density of 1.20 g/mL.
=50-S 9 x 100 %
a. %(m/m) = \. 20(m) x 75olmL)
= 900 9
1-(m/m) mass OF Solute (cthand)
mass Of solution
9009
FS.617
b. M
Molar masS f cthonol
2. Consider the following chemical equations. Predict if the following solutions would conduct
electricity weakly, strongly or not at all.
a) KBr(s) → K* (aq) + Br¯(aq)
Electiciti Strangly
b) NH;(aq)+ H20(1) = NH (aq)+ OH-(aq)
Electricity Strongly
c) C,H1206(s) → CGH1206(aq)
not at all
assignment 7 | CHM 1032L
193
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