Question

/mL. A student is holding two 2 Assume the density of air at room temperature is 1.2 ml. A student is hol balloons filled with gases; one balloon filled with hydrogen gas (dens ses: one balloon filled with hydrogen gas (density -0.082 g/mL) and second balloon filled with carbon dioxide gas (density = 1,9 / would happen if the student release both the balloons? 3. A data set is recorded to find the density and identity of a spherical piece of an unknown metal. Complete the table. Show all your work and include appropriate units. Density measurement of a spherical piece of unknown metal Mass of the metal piece 35.65 g Diameter of the spherical metal piece 1.85 cm Radius of the spherical metal piece Volume of the metal piece Density of the metal piece Identity of the metal piece (Hint: use your reference table 1 given in the procedure) Calculate the percentage (%) error in density value of metal piece

Answer 1

The density of air at room temp is 1.2 g/l.

the density of hydrogen gas is 0.082 g/l. that is its density is lower than the air.

a lower density material always try to go to the top, as for the same volume a lower dense material weigh less compare to high dense material. . so, a balloon filled with hydrogen gas will float in air and it will just get released upwards.

The density of CO2 gas is 1.9 g/l. which is greater than air.

As the density of CO2 is high, it will try to settle,i.e. move downward. So a balloon filled with CO2 gas will sink when released in air.

The mass of the metal piece = 35.65 grams. Diameter of the spherical - piece Chaped metal (d = 1.85 cm radius of the metal piece = diameter = 1.85 -0,925 cm volume of the metals = 4T ² = 4₂ X r x (0.92533 chi = 3.3135 cm3 Density of the metal = mass Volume = 35.65 = 10.759 8/em? 3.3135 The table mentioned above isn't present, so that part can't be calculated The true density also un't given, so error cont be calculated.