Laboratory Techniques and Measurements Lab Homework Help

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oratory-Techniques-and-Measurements-Lab
Exercise 1: Length, Temperature, and Mass
Data Table 1. ​
Length Measurements.
A.
°​
Water boils at 100​
C at sea level. If the water in this experiment did not boil at 100​ °​ C, what
could be the reason?
B. While heating two different samples of water at sea level, one boils at 102​ °​ C and one boils at
99.2​ o​ C. Calculate the percent error for each sample from the theoretical 100.0°C
Exercise 2: Volume and Density
Data Table 4. ​
Liquid Measurements
An unknown, rectangular substance measures 3.6 cm high, 4.21 cm long, and 1.17 cm wide. If
the mass is ​ 21.3 g​
, what is this substance’s density (in grams per milliliter)?
A sample of gold (Au) has a mass of 26.15 g. Given that the theoretical density is 19.30 g/mL,
what is the volume of the gold sample?
What would happen if you dropped the object into the beaker while using the Archimedes’
Principle method instead of submerging the object?
How did the magnet’s density measurement using the Archimedes’ Principle compare to the
density measurement using the calculated volume? Which method might be more accurate?
Why?