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What is the relationship between the dimensions of molar mass and the properties of a substance?
The molar mass of a substance is related to its properties because it affects how the substance behaves in chemical reactions and physical processes. Generally, substances with higher molar masses tend to have higher boiling points, melting points, and densities. This is because heavier molecules have stronger intermolecular forces, which require more energy to break apart. Additionally, molar mass can impact the solubility, conductivity, and reactivity of a substance.
What is the relationship between molar mass and density in a substance?
The relationship between molar mass and density in a substance is that as the molar mass of a substance increases, its density also tends to increase. This is because a higher molar mass means there are more particles packed into a given volume, leading to a higher density.
Why molar specific heat of diatomic gas is larger than that of mono atomic gas?
The molar specific heat of diatomic gases is larger than that of monatomic gases because diatomic gases have more degrees of freedom. While monatomic gases can only store energy through translational motion, diatomic gases can store energy in translational, rotational, and vibrational modes. This additional ability to rotate and vibrate requires more energy, resulting in a higher molar specific heat for diatomic gases compared to monatomic gases.
What is the relationship between the molar mass and density of a substance?
The relationship between the molar mass and density of a substance is that the molar mass affects the density of a substance. Generally, substances with higher molar masses tend to have higher densities. This is because the molar mass represents the mass of one mole of a substance, and denser substances have more mass packed into a given volume.
What is the relationship between molar mass and evaporation rates?
They are inversely related. This means that as molar mass increases, the rate of evaporation decreases. This is because as molar mass increases, the intermolecular bonds also get stronger, and it is more difficult to break those bonds and for liquid molecules to jump into a gaseous state.
How do concentrated basic solutions differ from other basic solutions?
Concentrated basic solutions have a higher concentration of hydroxide ions compared to other basic solutions. This means they have a higher pH and are more caustic or corrosive. They can be more dangerous to handle and require more caution during use.
Which has the higher limiting molar conductivity-NaCl or KCl And what is the reason?
KCl has a higher limiting molar conductivity than NaCl because potassium ions are larger and less hydrated than sodium ions, allowing them to conduct electricity more effectively in solution.
What is the difference between a molar solution and a normal solution?
A molar solution is a solution with a known concentration expressed in moles of solute per liter of solution, while a normal solution is a solution with a known concentration expressed as gram-equivalents of solute per liter of solution. Molar solutions are commonly used in chemistry, while normal solutions are used more in analytical chemistry and chemical analysis.
What is the effect of wavelength on molar absorptivity?
Molar absorptivity, or molar extinction coefficient, is a measure of how strongly a substance absorbs light at a particular wavelength. Generally, molar absorptivity varies with wavelength due to the electronic transitions of the molecules involved; different wavelengths may correspond to different energy levels and thus different absorption characteristics. As a result, a substance may exhibit higher molar absorptivity at certain wavelengths where it has strong absorption bands, leading to more intense coloration or increased absorbance at those specific wavelengths.
Why has bitumen got a higher boiling point than petrol?
Bitumen has a higher boiling point than petrol because it is made up of larger, heavier hydrocarbon molecules with more carbon atoms. These larger molecules require more energy to break the intermolecular forces holding them together, resulting in a higher boiling point compared to the smaller hydrocarbons found in petrol.
Why does a higher frequency wave have more energy?
A higher frequency wave has more energy because energy is directly proportional to frequency in waves. Higher frequency waves have shorter wavelengths and more oscillations per unit time, which requires more energy to sustain the faster oscillations.
What is higher kinetic energy ice or steam?
Steam has higher kinetic energy than ice because steam molecules have more thermal energy and move more quickly due to the higher temperature.
