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- The mass of an object depends on the atomic mass of the individual atoms or molecules and the how close the they are compressed together. External pressure pushes the atoms or molecules closer together and increased temperature usually expands the volume of the material, pushing the molecules apart.
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Jun 6, 2015 · A gold brick is made of gold atoms that mutually interact. At a given temperature it weighs bit less than the weight of each piece. At a higher temperature it weighs a bit more than at a colder temperature. So the weight isn't the sum of the weights of the parts, not quite.
Dec 12, 2014 · In fact, the vast majority of the mass of an atom is due to the internal energy between quarks that make up the nucleus rather than the rest mass of the quarks themselves. So, yes, a hot object has greater rest mass and would weigh more when measured, if a scale were sensitive enough.
Dec 22, 2021 · Temperature does not affect mass. But it can affect mass per volume (density), which is what this seems to be saying. If your fuel gauge, which measures volume, reports x liters in the tank, but it is hot, you have less mass of gas than if it was cold and the fuel gauge reported the same volume
Oct 31, 2004 · The mass of a chemical reaction may change due to temperature in a few ways. In an endothermic reaction, where heat is absorbed, the mass may increase as the reactants gain energy and expand. In an exothermic reaction, where heat is released, the mass may decrease as the products give off energy and contract.
But why should increasing the temperature of the gas increase the pressure in the box? A look at the atomic and molecular scale gives us some answers, and an alternative expression for the ideal gas law.
Jan 30, 2023 · A different mass size is due to the difference in the number of neutrons that an atom contains. Although mass numbers are whole numbers, the actual masses of individual atoms are never whole numbers (except for carbon-12, by definition). This explains how lithium can have an atomic mass of 6.941 Da.
But why should increasing the temperature of the gas increase the pressure in the box? A look at the atomic and molecular scale gives us some answers, and an alternative expression for the ideal gas law.
