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Density is related to many things, including atomic mass and the type of bonding between atoms of that element. Many elemnets do not have a direct relationship between atomic number and mass, e.g. while carbon most commonly has 6 neutrons to its 6 protons in the nucleus, uranium has nearly 150 neutrons to its 90-odd protons. These higher elements are also much larger and so their mass-to-volume ratio changes (this would inherently alter the overall density), while the larger size affects how the atoms "stack up", for example in a metal structure. Elements in different groups also bond differently, e.g. oxygen forms a double covalent bond making O2, but carbon makes giant covalent networks (graphite, diamond). This also affects how each atom (or molecule in the case of oxygen, chlorine, nitrogen etc.) will interact with those around and how they fit together.
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JudyThe density of an element is influenced by factors such as Atomic Mass, atomic radius, and electron configuration, which do not change linearly with atomic number. As you move across a period in the Periodic Table, the increase in atomic number does not directly correspond to a consistent increase in density due to variations in these factors affecting the packing of atoms in the solid state.
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Which element in each pair has atoms with a larger atomic mass?
Carbon vs. Oxygen: Oxygen has atoms with a larger atomic mass. Sodium vs. Magnesium: Magnesium has atoms with a larger atomic mass. Phosphorus vs. Sulfur: Sulfur has atoms with a larger atomic mass.
If a 5.0cm3 sample of aluminum has a mass of 13.5grams will float in water?
No, the sample will not float in water because aluminum has a greater density than water (2.7 g/cm3 for aluminum vs. 1.0 g/cm3 for water). Objects with a density greater than that of water will sink in water.
How can one determine the initial rate of reaction from a table?
To determine the initial rate of reaction from a table, you can look at the change in concentration of reactants over time. By calculating the slope of the initial linear portion of the concentration vs. time graph, you can find the initial rate of reaction.
What is a molecular orbital vs an atomic orbital?
An atomic orbital is a region around an atomic nucleus where the probability of finding an electron is high. A molecular orbital is a region in a molecule where there is a high probability of finding electrons that have participated in the formation of the molecule. Molecular orbitals are formed by the overlap and interaction of atomic orbitals from different atoms in a molecule.
How do you graph mass vs volume?
To graph mass vs volume, plot mass on the y-axis and volume on the x-axis. Each data point will represent a specific object or substance, showing how mass changes with different volumes. The relationship between mass and volume can help determine density, which is a key property of the material being examined.
