Calculate how much acetone (in grams and in kilograms) needs to be weighed to assure that you placed 1.25 liters of acetone inside a bottle that needs to be shipped to a chemical laboratory. For the density use 0.7857 g/mL.
mass = volume x density.
Plug and chug. You know volume and you know density. Calculate mass in grams, then convert to kg. Post your work if you get stuck.
Should I convert the 1.25 liters to mL?
Since the density is given in g/mL, you should convert acetone from 1.25 L to 1,250 mL to keep the units the same. This will give you the mass in grams (one answer required) and it can be converted to kg (the second answer required).
So, if I did everything right, I should end up with 98.21 g and 0.09821 kg (with significant figures)?
I get 982.125 grams if I multiply
1,250 x 0.7857. Then convert to kg by dividing by 1000 = 0.982125 kg. Then round to the correct number of s.f.
To calculate the mass of acetone in grams, you can use the formula:
Mass (g) = Volume (mL) x Density (g/mL)
Given that the volume is 1.25 liters and the density is 0.7857 g/mL, we need to convert the volume to milliliters before plugging it into the formula.
1 liter = 1000 mL
So, 1.25 liters = 1.25 x 1000 mL = 1250 mL
Now we can calculate the mass of acetone:
Mass (g) = 1250 mL x 0.7857 g/mL = 982.125 g
Therefore, you need to weigh approximately 982.125 grams of acetone.
To convert this mass to kilograms, divide it by 1000:
Mass (kg) = 982.125 g / 1000 = 0.982125 kg
Therefore, you need to weigh approximately 0.982125 kilograms of acetone.