A salt solution is made by dissolving 50g of the salt in 250cm3 of water. Calculate the density of the solution kgm-3.
To calculate the density of the solution, we need to know the total volume of the solution and its total mass.
The total volume of the solution is 250 cm3 (given).
The total mass of the solution is the sum of the mass of salt and the mass of water:
Mass of salt = 50 g
Mass of water = volume × density = 250 cm3 × 1 g/cm3 = 250 g
Total mass of solution = Mass of salt + Mass of water = 50 g + 250 g = 300 g
Now we can calculate the density of the solution:
Density = mass / volume = 300 g / 250 cm3 = 1.2 g/cm3
But the question is asking for the density in kg/m3, so we need to convert the units:
Density = 1.2 g/cm3 × 1000 kg/m3 / 1000 g/cm3 = 1200 kg/m3
Therefore, the density of the salt solution is 1200 kg/m3.
To calculate the density of the solution, we need to convert the mass of the salt solution to kilograms and the volume of the salt solution to cubic meters.
Given:
Mass of salt = 50g
Volume of water = 250cm³
First, we convert the mass of salt to kilograms:
1g = 0.001kg
Mass of salt = 50g × 0.001kg/g = 0.05kg
Next, we convert the volume of water to cubic meters:
1cm³ = 0.000001m³
Volume of water = 250cm³ × 0.000001m³/cm³ = 0.00025m³
Now, we can calculate the density of the solution using the formula:
Density = Mass / Volume
Density = 0.05kg / 0.00025m³ = 200 kg/m³
Therefore, the density of the salt solution is 200 kg/m³.
To calculate the density of the salt solution in kg/m^3, we need to determine the mass and volume of the solution.
Given information:
- Mass of salt = 50g
- Volume of water = 250cm^3
To calculate the mass of the solution, we need to consider the mass of both the salt and the water. The density of water is approximately 1000 kg/m^3.
1. Convert the mass of salt to kilograms:
50g = 50/1000 = 0.05 kg
2. Convert the volume of the water to meters cubed:
250cm^3 = 250/1000000 = 0.00025 m^3
3. Calculate the mass of the solution by adding the mass of salt to the mass of water:
Mass of solution = Mass of salt + Mass of water
Mass of solution = 0.05 kg + (0.00025 m^3 × 1000 kg/m^3)
Mass of solution = 0.05 kg + 0.25 kg
Mass of solution = 0.3 kg
4. Calculate the density of the solution:
Density = Mass / Volume
Density = 0.3 kg / 0.00025 m^3
Density = 1200 kg/m^3
Therefore, the density of the salt solution is 1200 kg/m^3.