can anyone help with number 7?taÚeezing-point depression constant (°C/m)Freezing-point of DI water (°C)Magnesium chlorideMolar mass (g/mol)Mass of calorimeter (g)Volume of DI water (mL)Mass of magnesium chloride (g)Moles of magnesium chloride (mol)Mass of calorimeter + solution (g)Mass of calorimeter + solution + ice (g)Freezing-point of solution ("C)ass of calorimeter + ice after decanting (9)Mass of ice added (g)Mass of ice remaining after decanting (9)Mass of melted ice (g)Mass of water in final solution (g)Mass of water in final solution (ko).ĆSolution 1MgCl295.2117.2849.01.460.015367.51113.17-1.0243.9245.6626.6419.0267.790.0677951.01.86Solution 2MgCl295.2117.462.110.20Solution 3MgCl295.21 6789PHASE 6:Prepare aqueous solution 2Complete the following steps:Use scoopula to weigh outapproximately 2 g ofmagnesium chloride. Recordexact mass in Lab DataCalculate moles magnesiumchloride. Record in Lab DataAdd magnesium chloride tocalorimeter. Place used weighboat in Wash/Waste binPlace calorimeter on stir plateto dissolve magnesiumchloride. Turn on stir plate for afew seconds and turn off10 Tare balance. Weighcalorimeter with solution onbalance. Record mass in LabData. Return calorimeter to labbench

No. of moles of a solute = mass of solute ÷ molar mass of solute

Answered: 7 Calculate moles magnesium chloride.…

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Chemistry

7 Calculate moles magnesium chloride. Record in Lab Data

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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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

can anyone help with number 7?
ta
Ú
eezing-point depression constant (°C/m)
Freezing-point of DI water (°C)
Magnesium chloride
Molar mass (g/mol)
Mass of calorimeter (g)
Volume of DI water (mL)
Mass of magnesium chloride (g)
Moles of magnesium chloride (mol)
Mass of calorimeter + solution (g)
Mass of calorimeter + solution + ice (g)
Freezing-point of solution ("C)
ass of calorimeter + ice after decanting (9)
Mass of ice added (g)
Mass of ice remaining after decanting (9)
Mass of melted ice (g)
Mass of water in final solution (g)
Mass of water in final solution (ko)
.
Ć
Solution 1
MgCl2
95.21
17.28
49.0
1.46
0.0153
67.51
113.17
-1.02
43.92
45.66
26.64
19.02
67.79
0.06779
51.0
1.86
Solution 2
MgCl2
95.21
17.46
2.11
0.20
Solution 3
MgCl2
95.21

6
7
8
9
PHASE 6:
Prepare aqueous solution 2
Complete the following steps:
Use scoopula to weigh out
approximately 2 g of
magnesium chloride. Record
exact mass in Lab Data
Calculate moles magnesium
chloride. Record in Lab Data
Add magnesium chloride to
calorimeter. Place used weigh
boat in Wash/Waste bin
Place calorimeter on stir plate
to dissolve magnesium
chloride. Turn on stir plate for a
few seconds and turn off
10 Tare balance. Weigh
calorimeter with solution on
balance. Record mass in Lab
Data. Return calorimeter to lab
bench

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