Volume and density uncertainties lab

In summary, we calculated the volume of a cube of unknown metal to be 6.859x10^-6 m3 with an uncertainty of 1.08x10^-6 m3. The density of the metal was determined to be 271.11 kg/m3 with an uncertainty of 1.41x10^-2 kg/m3. Based on the closest value on the chart, the metal is most likely aluminium with a density of 2.7x10^3 kg/m3.
  • #1
pancake188
1
0
Calculate the volume in (kg/m3) and density of a cube of unknown metal and its associated uncertainties. Then determine what kind of metal it is. Data is : side a= 19mm side b=19mm side c= 19mm. Mass of cube is 1.86g.


Volume= a*b*c
uncertainty ΔV= (Δa/a + Δb/b + Δc/c)V
Density= m/v
ΔD= (Δm/m + Δd/d)D



I calculate the volume to be 6.859x10^-6 in cubic metres its uncertainty is 1.08x10^-6
The mass is 0.00186kg
Density ended up as 271.11kg/m3 but on the chart the closest value to that is 2.7x10^3.
 
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  • #2
The uncertainty in density is 1.41x10^-2. It is most likely aluminium, since it has a density of 2.7x10^3 kg/m3.
 

Related to Volume and density uncertainties lab

What is the purpose of a volume and density uncertainties lab?

The purpose of a volume and density uncertainties lab is to determine the accuracy and precision of measurements for volume and density. This helps to understand the potential errors and uncertainties in experimental data and improve the reliability of results.

What equipment is typically used in a volume and density uncertainties lab?

Common equipment used in a volume and density uncertainties lab includes graduated cylinders, beakers, pipettes, balances, and rulers. These tools are used to measure volume and mass, which are necessary for calculating density.

How do you calculate the uncertainty of volume and density measurements?

The uncertainty of volume and density measurements can be calculated by taking the average of multiple measurements and determining the range of values. This range is then divided by the average value and multiplied by 100 to get the percent uncertainty.

Why is it important to consider uncertainties in volume and density measurements?

Considering uncertainties in volume and density measurements is important because it allows for a more accurate and reliable understanding of experimental data. It also helps to identify any potential sources of error and improve the precision of future measurements.

What are some sources of error in a volume and density uncertainties lab?

Sources of error in a volume and density uncertainties lab can include human error in reading and recording measurements, variations in temperature and pressure, and imperfections in the equipment used. It is important to identify and minimize these errors in order to obtain more accurate results.

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