Answer with solution, plz.

1. What is the concentration of the solution by volume when dissolved is used 30 grams & the water is 60 grams.

2. How much solvent in grams is present in a solution with a concentration by volume of 40% the solute of content is 60 grams.

is the 30 grams a dissolvable solid, or a liquid?

2. Not possible to do percent by volume if the solute was a solid, as the solid dissolves.

1. To find the concentration of a solution by volume, you need to calculate the ratio of the volume of the solute to the total volume of the solution.

First, calculate the total mass of the solution by adding the mass of the solute (30 grams) and the mass of the water (60 grams), which gives us a total mass of 90 grams.

Next, calculate the volume of the solute using its mass and its density (if provided). Since the density is not given in this case, we cannot calculate the exact volume. However, we can approximate the volume using the assumption that the solute has the same density as water. The density of water is typically close to 1 gram per milliliter (g/mL), so we can assume that the volume of the solute is approximately 30 mL.

Finally, calculate the concentration of the solution by volume. This is done by dividing the volume of the solute (30 mL) by the total volume of the solution (30 mL + 60 mL = 90 mL) and multiplying by 100% to express it as a percentage. The concentration of the solution by volume is approximately 33.3%.

2. To find the amount of solvent in grams present in a solution with a concentration by volume of 40%, you need to calculate the volume of the solute and then subtract it from the total volume of the solution.

First, calculate the volume of the solute using its mass and assuming its density is the same as water. Since the density of water is approximately 1 g/mL, the volume of the solute is approximately 60 mL.

Next, calculate the total volume of the solution by dividing the volume of the solute by the concentration by volume. In this case, the volume of the solute (60 mL) is divided by the concentration by volume (40%) expressed as a decimal (0.40). Thus, the total volume of the solution is 150 mL.

Finally, calculate the amount of solvent in grams by subtracting the mass of the solute from the total mass of the solution. The mass of the solute is given as 60 grams, and the total mass of the solution can be calculated by adding the mass of the solute to the mass of the solvent. Therefore, the mass of the solvent is approximately 90 grams (150 grams - 60 grams).