a bar of steel has a mass of 277 g and a volume of 35.5 cm3. What is the density of the bar?Will it float in water?Will it float in mercury?
could u please help me with this question?:)
density = mass/volume = 277/35.5 = ??g/cc.If the density is greater than the density of water (1.00 g/cc) it will sink. If it is higher than 1.00 it will sink. Mercury has a density of 13.6 g/cc so steel will ??? in mercury.
density= mass/volume so 277/35.5= 7.8028169 g/cm3...
and water has a density of 1g/cm3 so it will not float in water...
while mercury has a density of 13.6 g/cm3 so it will float in mercury...
I'm in grade 8 but that was easy... ;)
Certainly! To find the density of an object, you need to divide its mass by its volume.
In this case, the mass of the steel bar is given to be 277 g and the volume is given to be 35.5 cm^3. So, we can calculate the density using the formula:
Density = Mass / Volume
Density = 277 g / 35.5 cm^3
Calculating this, we find:
Density ≈ 7.80 g/cm^3.
Now, let's consider if the steel bar will float in water and mercury. Comparing the density of the bar with the densities of water (1 g/cm^3) and mercury (13.5 g/cm^3):
- Since the density of the steel bar (7.80 g/cm^3) is greater than the density of water (1 g/cm^3), it will sink in water.
- As for mercury, since the density of the steel bar (7.80 g/cm^3) is still lower than the density of mercury (13.5 g/cm^3), the bar will also sink in mercury.
So, to summarize, the density of the steel bar is approximately 7.80 g/cm^3, and it will sink in both water and mercury.