Describe the similarities and differences between the motion of particles in liquids and gases.

Chemistry

1 answer:

vladimir1956 [14]3 years ago

6 0

Gases don't have a certain shape to them. with that, the molecules are "crazy" and move very fast. Liquids don't have a shape either, but they move slower than gases because they take the shape of the container it is in

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How reactive is an atom of Sodium(Na) and why?

Hitman42 [59]

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4 years ago

A solution is 40.0% by volume benzene (C6H6) in carbon tetrachloride at 20C. The vapor pressure of pure benzene at this temperat

Alexandra [31]

Answer:

84.30 mm Hg

Explanation:

In 100 cm³ of solution we have: 40 cm³ C6H6 and 60 cm³ CCl4. Given the densities we can calculate their masses and number of moles, and since by Raoult´s law

Ptotal = XAPºA + XBPºB

where XA= mol fraction =na/(na +nb) and PºA vapor pressure pure of pure component A

m C6H6 = 40 cm³ x 0.87865 g/cm³ = 35.146 g

mol C6H6 = 35.146 g/ 78.11 g/mol = 0.45 mol

mass CCl4 = 60 cm³ x 1.5940 g/cm³ = 95.640 g

mol CCl4 = 95.640 g / 153.82 g/mol = 0.62 mol

mol tot = 1.07

XC6H6 = 0.45/ 1.07 = 0.42 XCCl4 = 0.62/1.07 =0.58

Ptot (mmHg) = 0.42 x 74.61 + .58 x 91.32 = 84.30 mmHg

6 0

3 years ago

AP chem. Sublevels!!!!!!!!!!!