a density bottle of capacity 50ml weighs 27g when empty and 90g when it is filled with glycerine. whatis the density of glycerine in kg/m^3?
(90-27)g / 50ml
= 63/50 g/cm^3
now just convert that to kg/m^3
What volume of glycerine c3h8 of density 1.26g/cm should be taken to obtain 2.5mol of glycerin?
To find the density of glycerine, we can use the formula:
Density = Mass / Volume
First, let's find the mass of glycerine in the density bottle. The mass of the empty bottle is 27g, and when filled with glycerine, it weighs 90g. Therefore, the mass of glycerine is:
Mass of glycerine = Mass when filled - Mass when empty
Mass of glycerine = 90g - 27g
Mass of glycerine = 63g
Next, let's find the volume of glycerine. The density bottle has a capacity of 50ml, which is equal to 50cm^3. Therefore, the volume of glycerine is:
Volume of glycerine = Volume of density bottle
Volume of glycerine = 50cm^3
Now, let's convert the units to meters, as the density is typically expressed in kg/m^3:
1 cm^3 = 1 × 10^(-6) m^3
Converting the volume of glycerine:
Volume of glycerine = 50 × 10^(-6) m^3
Volume of glycerine = 5 × 10^(-5) m^3
Finally, we can calculate the density of glycerine by dividing the mass of glycerine by the volume of glycerine:
Density of glycerine = Mass of glycerine / Volume of glycerine
Density of glycerine = 63g / 5 × 10^(-5) m^3
Converting the mass to kilograms:
1 g = 1 × 10^(-3) kg
Density of glycerine = 0.063kg / 5 × 10^(-5) m^3
Density of glycerine = 1,260kg/m^3
Therefore, the density of glycerine is 1,260 kg/m^3.