What volume of alcohol would you use if you needed 25.0 g? Density is 0.7855 g/ml at 20°C
mass = volume x density
You have the mass and density, substitute and solve for volume.
To calculate the volume of alcohol needed, we need to use the formula:
Volume = Mass / Density
In this case, the mass of alcohol required is 25.0 grams, and the density of alcohol is given as 0.7855 grams per milliliter at 20°C.
Plugging in the values into the formula, we get:
Volume = 25.0 g / 0.7855 g/ml
To simplify the calculation, we divide the numerator and denominator by 0.7855:
Volume = 31.844 ml
Therefore, you would need approximately 31.844 ml of alcohol to obtain a mass of 25.0 grams.