Answer:
Explanation:
Hello,
In this case, considering the ideal gas equation as:
We can first compute the moles of air at the given conditions of 195 kPa (1.92 atm), 10 °C (283K) and 350 L:
Next, since the molar mass of air is 28.97 g/mol, the mass is computed to be:
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Answer:
there are some materials listed so next to it it shows that which material is pure substance and which material is mixture
and then the next shows which is a homologous and homogeneous compound or element
K (Potassium) has higher molar entropy than sodium.
The substance's condition has the most impact on the molar entropy. Compounds that are gases will have a far higher molar entropy than compounds that are liquids or solids because gases are much more widely dispersed. A substance's entropy rises as its molecular weight, complexity, and temperature rise. As the pressure or concentration decreases, the entropy likewise rises. Gas entropies are significantly higher than those of condensed phases. The highest entropy is in gases. This is due to the wide variety of microstates in which gases can reside. The amount of freedom that atoms in a substance have to disperse, migrate, and organize themselves randomly is referred to as entropy.
Learn more about molar entropy here-
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Answer:
mass is 4.57 g
Explanation:
Ca(OH)₂ solution consists of Ca(OH)₂ solute molecules and solvent and we are asked to find the mass of Ca(OH)₂ in the solution
number of moles of Ca(OH)₂ is - 0.0787 mol
molar mass of Ca(OH)₂ is - 58.093 g/mol
we can use the following equation
number of moles = mass of Ca(OH)₂ / molar mass of Ca(OH)₂
rearranging the equation
mass of Ca(OH)₂ = number of moles x molar mass
mass = 0.0787 mol x 58.093 g/mol = 4.57 g
mass of Ca(OH)₂ is 4.57 g