Answer:
C. the relative molecular mass of the compound
Explanation:
Like molecular formulas, empirical formulas are not unique and can describe a number of different chemical structures or isomers. <u>To determine an empirical formula, the relative molecular mass of the composition of its elements</u> can be used to mathematically determine their ratio.
Using ideal gas equation, PV = nRT, and since there is no volume change and amount change, the equation is now P = kT, where k =nR/V. Temperature must be in kelvin
From the given, k = (0.82)/ (21 + 273) = 2.78 x 10^-3
Substituting T = -3.5+273, P = 0.75 atm
In order to answer this question, the dimensions of the brick in centimetres need to the converted to dimensions in metres. In order to convert centimetres to metres you need to divide by 100. Doing this yields brick dimensions of 0.15 m x 0.06 m x 0.12 m. Multiplying the length, width and height together yields the volume of 0.00108 cubic metres.
Surface tension increases by increasing the intermolecular forces.
<h3>What is intermolecular forces?</h3>
The electromagnetic forces of attraction or repulsion that act between atoms and other types of nearby particles, such as atoms or ions, are examples of intermolecular forces (IMFs), also known as secondary forces.
Between molecules, intermolecular forces are at work. In contrast, molecules themselves exert intramolecular pressures. In comparison to intramolecular forces, intermolecular forces are weaker. Intermolecular forces include things like the London dispersion force, dipole-dipole interaction, ion-dipole interaction, and van der Waals forces.
Intermolecular forces come in five flavors: ion-induced dipole forces, dipole-induced dipole forces, induced dipole forces, and dipole-dipole forces. Ions and polar (dipole) molecules are held together by ion-dipole forces.
To learn more about intermolecular forces from the given link:
brainly.com/question/9007693
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Answer:
the second one would have lower
Explanation:
because of the amount
