At room temperature (20 °C) and pressure, the density of air is1.189 g/L. An object will float in air if its density is less than thatof air. In a buoyancy experiment with a new plastic, a chemistcreates a rigid, thin-walled ball that weighs 0.12 g and has a vol-ume of 560 cm³.(a) Will the ball float if it is evacuated?(b) Will it float if filled with carbon dioxide (d=1.830 g/L)?(c) Will it float if filled with hydrogen (d=0.0899 g/L)?(d) Will it float if filled with oxygen (d=1.330 g/L)?(e) Will it float if filled with nitrogen (d=1.165 g/L)?(f) For any case that will float, how much weight must be addedto make the ball sink?
States of Matter
The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates).
Chemical Reactions and Equations
When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.
At room temperature (20 °C) and pressure, the density of air is1.189 g/L. An object will float in air if its density is less than thatof air. In a buoyancy experiment with a new plastic, a chemistcreates a rigid, thin-walled ball that weighs 0.12 g and has a vol-ume of 560 cm³.(a) Will the ball float if it is evacuated?(b) Will it float if filled with carbon dioxide (d=1.830 g/L)?(c) Will it float if filled with hydrogen (d=0.0899 g/L)?(d) Will it float if filled with oxygen (d=1.330 g/L)?(e) Will it float if filled with nitrogen (d=1.165 g/L)?(f) For any case that will float, how much weight must be addedto make the ball sink?
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