An object weighing 90 N has a volume of 45 mL and a mass of 9.0 g. What is its density?
A. 0.10 g/mL
B. 0.20 g/mL ••
C. 5.0 g/mL
d. 10 g/mL
correct me!!
density = mass over volume.
Is my answer right??
Yes kiana, the answer is right
To determine the density of an object, you need to divide its mass by its volume. In this case, the mass is given as 9.0 g, and the volume is given as 45 mL.
Density = mass / volume
Density = 9.0 g / 45 mL
Now we need to ensure that the units are consistent. Since the volume is given in milliliters (mL), we need to convert the mass to milliliters by multiplying by the appropriate conversion factor, which is the density of water (1 g/mL), since water has a density of 1 g/mL.
Mass in mL = 9.0 g * (1 mL / 1 g)
Mass in mL = 9.0 mL
Now we can calculate the density:
Density = Mass in mL / Volume
Density = 9.0 mL / 45 mL
Density ≈ 0.20 g/mL
So, the correct answer is B. 0.20 g/mL.