Answer:
Ne
Explanation:
Step 1:
Data obtained from the question. This includes:
Mass of O2 = 5g
Mass of C2H6 = 5g
Mass of CO2 = 5g
Mass of Ne = 5g
Step 2:
Determination of the number of mole of each gas:
For O2:
Mass of O2 = 5g
Molar Mass of O2 = 16x2 = 32g/mol
Number of mole of O2 =?
Number of mole = Mass/Molar Mass
Number of mole of O2 = 5/32
Number of mole of O2 = 0.156 mole
For C2H6:
Mass of C2H6 = 5g
Molar Mass of C2H6 = (12x2) + (6x1) = 24 + 6 = 30g/mol
Number of mole of C2H6 =?
Number of mole = Mass/Molar Mass
Number of mole of C2H6 = 5/30
Number of mole of C2H6 = 0.167 mole
For CO2:
Mass of CO2 = 5g
Molar Mass of CO2 = 12 + 16x2 = 12 + 32 = 44g/mol
Number of mole of CO2 =?
Number of mole = Mass/Molar Mass
Number of mole of CO2 = 5/44
Number of mole of CO2 = 0.114 mole
For Ne:
Mass of Ne = 5g
Molar Mass of Ne = 20g/mol
Number of mole of Ne =?
Number of mole = Mass/Molar Mass
Number of mole of Ne = 5/20
Number of mole of Ne = 0.25 mole
Step 3:
Determination of the volume occupied by the each gas.
1 mole of a gas occupy 22.4L at stp.
For O2:
0.156 mole will occupy = 0.156 x 22.4 = 3.49 L
For C2H6:
0.167 mole Will occupy = 0.167 x 22.4 = 3.74 L
For CO2:
0.114 mole Will occupy = 0.114 x 22.4 = 2.55 L
For Ne:
0.25 mole will occupy = 0.25 x 22.4 = 5.6 L
From the calculations made above, Ne has the largest volume
Answer:
if volume is increased, the number of collisions per second decreases.
Explanation:
volume is inversely proportional to pressure. Increase in volume leads to decrease in pressure and decrease in volume leads to increase in pressure.
if the pressure is high, it leads to increase in the number of collisions. If the pressure is low, it leads to decrease int he number of collisions.
therefore since volume is inversely proportional, when volume is increased, the pressure decreases and thus the number of collisions decreases.
Answer:
32 m/s
Explanation:
Frequency is the number of waves that pass a particular point in 1 second
Wavelength is the distance between 2 crests or 2 troughs
Speed = frequency x wavelength
Substituting the values
Speed = 4 Hz x 8 m
Speed = 32 m/s
Waves speed is 32 m/s