[Atomic Weights: Zn 65.39 amu S 32.07 amu O 16.00 amu Report Table Express each number to the correct number of significant figures. The God of Chemistry will be pleased if you do so. Surely, you would not want to displease the God of Chemistry. Show your math in the box on the right. Entry Description Data (Show Calculations in data box. sC = show calculation ) a Mass of empty crucible grams b Mass of crucible + unknown grams Mass of crucible + unknown after final heating grams Mass of original unknown grams Mass of water lost by heating grams f Mass percent of water in unknown (% H2O) Mass of unknown salt remaining after g heating grams h Molar mass of ZnSO4 grams Number of moles of anhydrous ZNSO4 salt i (anhydrous means the absence of water) moles i Molar mass of water grams Number of moles of water present in hydrate moles Ratio of moles water in hydrate to moles of ZnSO4 m Formula of the hydrate of ZNSO4 Name of the hydrate of ZnSO4

[Atomic Weights: Zn 65.39 amu S 32.07 amu O 16.00 amu Report Table Express each number to the correct number of significant figures. The God of Chemistry will be pleased if you do so. Surely, you would not want to displease the God of Chemistry. Show your math in the box on the right. Entry Description Data (Show Calculations in data box. sC = show calculation ) a Mass of empty crucible grams b Mass of crucible + unknown grams Mass of crucible + unknown after final heating grams Mass of original unknown grams Mass of water lost by heating grams f Mass percent of water in unknown (% H2O) Mass of unknown salt remaining after g heating grams h Molar mass of ZnSO4 grams Number of moles of anhydrous ZNSO4 salt i (anhydrous means the absence of water) moles i Molar mass of water grams Number of moles of water present in hydrate moles Ratio of moles water in hydrate to moles of ZnSO4 m Formula of the hydrate of ZNSO4 Name of the hydrate of ZnSO4

Chemistry: An Atoms First Approach

2nd Edition

ISBN:9781305079243

Author:Steven S. Zumdahl, Susan A. Zumdahl

Publisher:Steven S. Zumdahl, Susan A. Zumdahl

Chapter5: Stoichiometry

Section: Chapter Questions

Problem 23Q: Reference Section 5-2 to find the atomic masses of 12C and 13C, the relative abundance of 12C and...

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Question

Data Table
Mass of empty crucible
23.578
grams
Mass of crucible + mass of hydrate
27.432
grams
Mass of crucible + unknown after final heating
25.763
grams
Transfer the information in the Data Table to the Report Table.
Before
you start this virtual experiment, answer the Pre-lab Questions in the space provided on
page 2. To determine the ratio of water to the anhydrous salt, for the unknown hydrate of ZnSO4,
use the above data to complete the Data Sheet on page 3, and show the complete calculation in
the Calculation Sheet on page 4. Finally, write the formula and name of the unknown hydrate on
the Data Table on lines m and n.

[Atomic Weights: Zn 65.39 amu
S 32.07 amu 0 16.00 amu
Report Table
Express each number to the correct number of significant figures. The God
of Chemistry will be pleased if you do so. Surely, you would not want to
displease the God of Chemistry. Show your math in the box on the right.
Entry Description
Data (Show Calculations in data box.
sC = show calculation )
a
Mass of empty crucible
grams
b
Mass of crucible + unknown
grams
Mass of crucible + unknown after final heating
grams
Mass of original unknown
grams
e
Mass of water lost by heating
grams
f Mass percent of water in unknown (% Hz0)
Mass of unknown salt remaining after
g
heating
grams
h Molar mass of ZNSO4
grams
Number of moles of anhydrous ZNSO4 salt
i
(anhydrous means the absence of water)
moles
i Molar mass of water
grams
Number of moles of water present in
hydrate
moles
Ratio of moles water in hydrate to moles of
ZNSO4
m Formula of the hydrate of ZNSO4
Name of the hydrate of ZnSO4

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