Answer:
See Explanation
Explanation:
Let the mass of salt be x
Let the mass of solution be 10 g
Percentage by mass of salt = 0,25%
So;
Percent concentration of salt = mass of salt/mass of solution * 100
0.25 = x/10 * 100
0.25 * 10/100 = x
x= 0.025 g of salt
Let the mass of water be y
Since mass of solution = mass of salt + mass of water
10 g = 0.025 g + y
y = 10 g - 0.025 g
y = 9.975 g
First, from reliable sources we get the densities of both the copper and lead. This will give us 8.96 g/cm3 and that of lead is 11.34 g/cm3. We assume that 1 cm3 of this certain mixture is composed of x cm3 of copper and y cm3 of zinc. Such that,
x + y = 1
and 9.60 = x(8.96) + y(11.34)
The values of x and y are 0.73 cm3 and 0.27 cm3. The masses are obtained by multiplying these values by the densities giving us with 6.54 g and 3.06 g.
Answer:
589.038 m/s
Explanation:
i dont know if did this right tho
Cupric?
i’m not sure if this is 100% right!!
1-pentyne boiling point is 40 degrees C it is lower than the one for 1-octyne which is 126 degrees C the vapor pressure for 1-butene is higher at low temperatures than 1-heptene.These are due to the difference in the length of the chains. The strong molecular forces are stronger in large molecules. There is more energy needed to move large molecules to the vapor phase when in liquid form.
