Question

Help me, Please

In this Virtual Lab, you will find the mass of an object using an electronic balance. You will then predict if an object will float by comparing its mass to the mass of the water displaced by the object. To do this Virtual Lab, you will need to convert the volume of the water displaced from milliliters (mL) to grams (g). The mass of 1 mL of fresh water is 1 g. If you know the volume of water displaced, you also know the mass of the water displaced. For example, if the volume of water displaced is 5 mL, the mass of the water displaced is 5 g. If the volume is 2.7 mL, the mass is 2.7 g, and so on. Table 1 Item Mass (g) Volume (ml) Float or sink Density (g/ml) Show your work Wood 13.30 g 15.6 ml Float Aluminum 5.60 g 1.1 ml Sink Plastic 4.00 g 4.1 ml Float Lead 20.00 g 1.8 ml Sink Cork 4.00 g 8.1 ml Float Steel 8.30 g 1.6 ml Sink Clay 8.5 ml Sink Rubber 15.60 g 5.90 g 10.40 g 4.9 ml Sink Candle 10.5 ml Float

Answer 1

Density = Mass / Volume

In our case, we are provided with mass of different items along with volume of water displaced by them, i.e. Volume of the Item.

Substances with greater density tha water, sinks in water while Substances with lesser density than water, floats over ther surface of water.

Therefore, Desities of the given items can be calculated as

1. Density of Wood = 13.30g/15.6mL = 0.852 g/mL

Density of wood is less than density of water, so it floats over water surface

2. Density of Aluminium = 5.6g/1.1mL = 5.091 g/mL

Density of Aluminum is more than density of water, so it Sinks in water.

3. Density of Plastic = 4.0g/4.1mL = 0.976 g/mL

Density of plastice is less than density of water, so it floats over water surface

4. Density of Lead = 20.0g/1.8mL = 11.111 g/mL

Density of Lead is more than density of water, so it sinks in water

5. Density of Cork = 4.0g/8.1mL = 0.494 g/mL

Density of Cork is less than density of water, so it floats over water surface

6. Density of Steel = 8.30g/1.6mL = 5.188 g/mL

Density of Steel is more than density of water, so it sinks in water

7. Density of Clay = 15.60g/8.5mL = 1.835 g/mL

Density of Clay is more than density of water, so it sinks in water

8. Density of Rubber = 5.90g/4.9mL = 1.204 g/mL

Density of Rubber is more than density of water, so it sinks in water

9. Density of Candle = 10.4g/10.5mL = 0.990 g/mL

Density of Candle is less than density of water, so it floats over water surface