Follow the steps provided in the simulation to add water to the graduated cylinder, select one of the three samples (copper, silver, or gold), set its mass to the values given in the statements below, find its volume, and calculate its density.
To save time, you can approximate the initial mass of the solid to the nearest \pm\! 1~\rm g. For example, if you are asked to add 14.3 \rm g of copper, add between 13 \rm g and 15 \rm g.
Which of the following sets include two samples with an equal density?
Check all that apply.
20.2 \rm g silver and 20.2 \rm g copper
15.2 \rm g copper and 50.0 \rm g copper
15.4 \rm g gold and 18.7 \rm g silver
11.2 \rm g gold and 14.9 \rm g gold
15.2 \rm g copper and 50.0 \rm g copper
11.2 \rm g gold and 14.9 \rm g gold
15.4 \rm g gold and 18.7 \rm g silver
QRC
7.8g/ml
To determine which sets of samples have equal density, we need to calculate the densities of each sample first.
Density is calculated using the formula:
Density = Mass / Volume
Let's go through each option and calculate the densities:
1. 20.2 g silver and 20.2 g copper
We need to find the volume of both samples by using the graduated cylinder. Fill the graduated cylinder with water, select one of the samples (silver or copper) and record the change in volume. Then, divide the mass of each sample by the recorded volume to find their respective densities.
2. 15.2 g copper and 50.0 g copper
Follow the same steps as above to find the volume of each copper sample. Then, divide their masses by their respective volumes to calculate the densities.
3. 15.4 g gold and 18.7 g silver
Repeat the steps from before to find the volumes of the gold and silver samples. Divide their masses by their respective volumes to calculate their densities.
4. 11.2 g gold and 14.9 g gold
Once again, find the volumes of the gold samples using the graduated cylinder, and calculate their densities by dividing their masses by their respective volumes.
After calculating the densities for each set of samples, compare the values to see if any sets have equal densities. Select the sets where the calculated densities match.
Remember to follow the steps provided in the simulation carefully to perform the measurements accurately.
You add 8.6 g of iron to 28.40 mL of water and observe that the volume of iron and water together is 29.49 mL . Calculate the density of iron.
Cu goes with Cu as the same density.
Au goes with Au as the same density. Other than that I have no idea what a 20.2\rm g means.