Suppose the density of 100.0 mL of some liquid was found to be .78 g/mL . What would be the specific gravity of 25.0 mL of the liquid?
See your post above.
I need this answer to
To determine the specific gravity of a liquid, we first need to understand what it represents. Specific gravity is the ratio of the density of a substance to the density of a reference substance at a specific temperature. In this case, the reference substance is usually water at a temperature of 4°C.
To find the specific gravity of the liquid, we need to compare the density of the liquid to the density of water. Here's how we can approach this problem:
1. Convert the given values into the appropriate units:
- The density of the liquid is given as 0.78 g/mL, which is already in the required units.
- The volume of the liquid is given as 100.0 mL.
2. Calculate the mass of the liquid:
- Given the density (0.78 g/mL) and the volume (100.0 mL), we can multiply these values together to find the mass: 0.78 g/mL * 100.0 mL = 78.0 g.
3. Calculate the density of water:
- The density of water at 4°C is 1.00 g/mL.
4. Calculate the volume of the liquid for which we want to find the specific gravity:
- The volume given is 25.0 mL.
5. Calculate the mass of the liquid for which we want to find the specific gravity:
- To find the mass, we need to multiply the volume (25.0 mL) by the density (0.78 g/mL): 25.0 mL * 0.78 g/mL = 19.5 g.
6. Calculate the specific gravity:
- To find the specific gravity, we divide the density of the liquid by the density of water:
Specific gravity = (mass of liquid)/(density of water)
= 19.5 g / 1.00 g/mL
= 19.5
Therefore, the specific gravity of 25.0 mL of the liquid is 19.5.