The metric system of measurement involve the use following quantities except Gram Second Hectre✓✓✓ Centimeters The mole fraction of He is a gaseous solution prepare from 4.0g of He, 6.5g of Ar and 10.0g of Ne is -------- 0.11 0.2 0.6✓✓✓ 1.5 Calculate the volume of 1 mol of an ideal gas at 1 atm pressure and at 0°c (R = equal to 8.3144 J/K/mol, 0 ^oC = 273K) 222 MN 4dm³, 2.24dm³, 224fm³, 22.4dm³✓✓✓ of basic quantities are useful in defining the derived physical quantities Directions Volumes Resultants Dimensions✓✓✓ Under what conditions does the behaviour of real gases deviate from that predicted by the ideal gas law? Low Pressure, low Temperature low Pressure, High Temperature High Pressure, LowTemperature✓✓✓ High Pressure, High Temperature One of these statements is not true of the kinetic-molecular theory of gases. There is no net gain or loss of the total kinetic energy in collisions between gas molecules. The average kinetic energies of different gases are different at the same temperature.✓✓✓ Individual gas molecules are relatively far apart. The actual volume of the gas molecules themselves is very small compared to the volume occupied by the gas at ordinary temperatures and pressures. The law which states that the pressure or fugacity (i.e activity) of a single-phase mixture is equal to the mole-weighted sum of the component pressure is called? Dalton\'s law none of the options Hook\'s law Raoult’s law✓✓✓ gas occupies a volume of 2.4 L at 14.1 kPa. What volume will the gas occupy at 84.6 kPa? Show Options   14 L 0.40 L✓✓✓ 2.5 L  497 L The physical quantiy mass is an example of ? Derived unit None of the Options Basic unit✓✓✓ Unsure The pressure that is required to liquefy a gas at its critical temperature is called its __ Liquefaction temperature Non-liquefaction temperature Critical temperature Critical pressure✓✓✓ -------------------------------------------------------------------- 1. One of these form a Crystal with bee structure Ans. Cscl 2. One of these is untrue about semi conductors Ans. they conduct under normal condition 3. which of these us a pure substance made up of one atom Ans. element 4. which of these is true of mixtures Ans. very little or No exchange of energy occurs during the formation of mixtures 5. Graph of V against T as linear with zero intercept and slope equal to K is graphical representation of Ans. Charles law 6. One of these is not part of the procedures in determining the critical temperature of liquid Ans. place the filled capillary tube in ice block and observe 7. Under what condition does the behaviour of real gases deviate from predicated by the ideal gas law? Ans. high pressure, low temperature 8. When 0.25l of liquid nitrogen (d :0.807g/ml) is vaporized, what volume does the resulting gas occupy at 25oC at 5.00atm Ans. 35l 9. Helium molecules has a mass of 4.0026g and is moving at a speed of 30m/s. The classical energy of the gas is Ans. 1.80J 10. One of these statements is not trus of the kinetic-molecular theory of gases Ans. The average kinetic energy of different gases are different at the same temperature -------------------------------------------------------------------------- At reasonable energy function, the surface particles have the tendency to escape through process of___ evaporation The density of a crystal depends on all the following except___ Its geometry The pressure exerted when an equilibrium is established between the number of particles evaporating and condensing within a given system is known as vaour pressure _____are fundamental concepts that are needed to model the behaviour of gases Gas laws The arrangement, which drives the more energetic particle to be on the surface of the particles while the less energetic particles are in the bulk of the liquid is because___ Some particles are more energetic than others The point whereby the temperature in which the prevailing vapour pressure of the liquid is equal to the ambient atmospheric pressure is called? boiling point One of the followings is not true of liquids The inability of a liquid to flow enables it to assume the shape of the container According to Clausius-Clayperon equation___ vapour pressure of any substance does not increase linearly with temperature These parameters are considered inoder to adequately resolve thermodynamics into meaningful models except physical appearance The following laws have been developed into equations of gas behaviours except Faraday\'s