a 1.00*10^1 mL sample of an unknown liquid has a mass of 7.99 g. Calculate the density of the liquid using the proper number significant figures
mass = volume x density so
density = mass/volume = ?
Can you do the s.f.?
To calculate the density of the liquid, you need to divide the mass of the liquid by its volume. The formula for density is:
Density = Mass / Volume
Given that the mass of the liquid is 7.99 g and the volume is 1.00 x 10^1 mL (which can be written as 10 mL), we can calculate the density using these values.
Density = 7.99 g / 10 mL
Remembering significant figures, you need to use the smallest number of significant figures from the given values, which is two significant figures in this case (7.99 g has three significant figures, while 10 mL has two significant figures).
Dividing 7.99 g by 10 mL gives:
Density = 0.799 g/mL
Since we can only have two significant figures, we need to round the result to have two significant figures. Therefore, the density of the liquid is:
Density = 0.80 g/mL