Answer:
680g of mercury is the mass of the sample of mercury.
Explanation:
Density is an unit used to relates the mass of an object per unit of volume.
For example, in the problem, the density of mercury is 13.6g/cm³, as cm³ is equal to milliliters, mL, the density is: 13.6g/mL.
If you have 50.0mL of mercury, the mass is:
50.0mL * (13.6g / mL) =
<h3>680g of mercury is the mass of the sample of mercury.</h3>
Answer:
mole fraction hexane 0.64
Explanation:
We know from Raoult's law of partial pressures that for a binary mixture, the vapor pressure above solution is the sum of the partial pressures of each gas:
P total = P(A) + P(B)
Also the partial pressure of a component is the product of its mole fraction , X, times its pure vapor pressure:
Ptotal = X (A)Pº(A) + X (B)Pº(B)
Since for solution of two components the mole fractions add to one, we now have all the information required to compute the answer.
250 torr = X(hexane)151 torr + ( 1 - X(hexane) )425 torr
250 = 151X(hexane) + 425 - 425 X(hexane)
274 X(hexane) = 175
X(hexane) = 1 -0.6 = 0.64
Answer: 9. decomposition 10. single displacement 11. synthesis 12. double displacement
Explanation: just know I know
