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18 Nov 2019
Quantites mass and volume and density. I didn't know how to the calculation! Can you help please
The goals of this experiment are: 1) To introduce the quantities mass, volume, and density; 2) To provide practice in the techniques used to measure mass and volume; 3) To find the densities of a liquid and a metal and compare them to their accepted values. Background The density of a sample of matter is its mass per unit volume. It can be thought of as how tightly packed the matter in the sample is. Density is calculated using the following formula: D-MV (eqn. 1) where D is density, M is mass, and V is volume. Given that mass typically has units of grams (g) and volume has units of milliliters (mL), density will have units of g/mL (or g/em' since ml and cm' are the same). Procedure 1. Measure 5.0 mL of the liquid provided in a 10 mL graduated cylinder. 2. Measure the mass of an empty 50 mL beaker. 3. Pour the liquid measured in step #1 into the beaker. 4. Measure the mass of the beaker plus liquid. 5. Empty the contents of the beaker into the waste bottle. 1. Measure the mass of an empty 100 mL or 150 mL beaker. 2. Add four spatula tips full of the metal provided to the beaker. 3. Measure the mass of the beaker plus metal. 4. Fill a 100 mL graduated cylinder to the 50.0 mL mark with tap water. 5. Carefully pour the metal from the beaker into the graduated cylinder. (Tip the cylinder so that the metal slides into the water.) 6. Measure the volume of the water plus metal in the cylinder. (The amount by which the volume has increased beyond 50.0 mL is equal to the volume of the metal.) 7. Pour the water out of the cylinder, being careful to keep the metal in the cylinder. 8. Pour the wet metal onto a paper towel, pat it dry for a few seconds, and transfer it to the beaker provided.
Quantites mass and volume and density. I didn't know how to the calculation! Can you help please
The goals of this experiment are: 1) To introduce the quantities mass, volume, and density; 2) To provide practice in the techniques used to measure mass and volume; 3) To find the densities of a liquid and a metal and compare them to their accepted values. Background The density of a sample of matter is its mass per unit volume. It can be thought of as how tightly packed the matter in the sample is. Density is calculated using the following formula: D-MV (eqn. 1) where D is density, M is mass, and V is volume. Given that mass typically has units of grams (g) and volume has units of milliliters (mL), density will have units of g/mL (or g/em' since ml and cm' are the same). Procedure 1. Measure 5.0 mL of the liquid provided in a 10 mL graduated cylinder. 2. Measure the mass of an empty 50 mL beaker. 3. Pour the liquid measured in step #1 into the beaker. 4. Measure the mass of the beaker plus liquid. 5. Empty the contents of the beaker into the waste bottle. 1. Measure the mass of an empty 100 mL or 150 mL beaker. 2. Add four spatula tips full of the metal provided to the beaker. 3. Measure the mass of the beaker plus metal. 4. Fill a 100 mL graduated cylinder to the 50.0 mL mark with tap water. 5. Carefully pour the metal from the beaker into the graduated cylinder. (Tip the cylinder so that the metal slides into the water.) 6. Measure the volume of the water plus metal in the cylinder. (The amount by which the volume has increased beyond 50.0 mL is equal to the volume of the metal.) 7. Pour the water out of the cylinder, being careful to keep the metal in the cylinder. 8. Pour the wet metal onto a paper towel, pat it dry for a few seconds, and transfer it to the beaker provided.
Sixta KovacekLv2
2 Sep 2019