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Category > Chemistry Posted 19 Jun 2017 My Price 7.00

Mass Conversions to Moles and Atoms

Mass Conversions to Moles and Atoms
Hands-On Labs, Inc.
Version 30-0150-00-03 Lab Report Assistant
This document is not meant to be a substitute for a formal laboratory report. The Lab Report
Assistant is simply a summary of the experiment’s questions, diagrams if needed, and data tables
that should be addressed in a formal lab report. The intent is to facilitate students’ writing of lab
reports by providing this information in an editable file which can be sent to an instructor. Exercise 1: Using Mass to Calculate Moles and
Atoms
Data Table 1. Moles and Atoms in Common Items
Item Formula Aluminum Cup Al2O3 Glass Stirring Rod SiO2 Cotton Ball Molar
Mass
(g/mol) Mass of
Sample
(g) Moles of
Sample
(mol) Moles of Each
Element (mol) Atoms of Each
Element Al: Al: O:
Si:
O:
C: O:
Si:
O:
C: H:
O: H:
O: C6H10O5 Questions
A. Describe the relationship between moles and atoms. B. Which item in Data Table 1 contains the largest quantity of moles?
C. Which item in Data Table 1 contains the least amount of oxygen atoms? Exercise 2: Experimental Design Data Table 2. Experimental Design and Results
Experimental Design
Results
Conclusion Questions
A. A sample of 2 tsp of sugar (C12H22O11) weighs 9.00 g. Record each step needed to calculate
the moles and atoms of all elements present in the sample. Then, calculate the moles and
atoms of each element in the sample of sugar. Show all work.

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Status NEW Posted 19 Jun 2017 12:06 AM My Price 7.00

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