How many grams of formaldehyde, H2CO, are in 500 ml of a 40% solution of formaldehyde in water? (Assume for this problem that the density of the formalin solution is 0.98 g/ml)
mass: density*volume=.98g/ml * 500 ml=490g
40 percent: .40*490 g= ?
To determine the number of grams of formaldehyde in a solution, we need to consider the concentration of the solution which is given as 40%.
First, we need to calculate the total volume of formaldehyde in the solution. We can use the equation:
Volume of formaldehyde (in ml) = Total volume (in ml) x Concentration (%)
Given that the total volume is 500 ml and the concentration is 40%, we can substitute these values into the equation:
Volume of formaldehyde (in ml) = 500 ml x 0.40
Volume of formaldehyde (in ml) = 200 ml
Next, we need to convert the volume of formaldehyde to grams. Since the density of the formalin solution is given as 0.98 g/ml, we can use the equation:
Mass of formaldehyde (in grams) = Volume of formaldehyde (in ml) x Density (in g/ml)
Substituting the values:
Mass of formaldehyde (in grams) = 200 ml x 0.98 g/ml
Mass of formaldehyde (in grams) = 196 g
Therefore, there are 196 grams of formaldehyde in 500 ml of a 40% solution of formaldehyde in water.
To find out how many grams of formaldehyde are in 500 ml of a 40% solution, we need to calculate the mass of the formaldehyde in the solution.
Step 1: Calculate the volume of formaldehyde in the solution.
Since the solution is 40% formaldehyde, this means that 500 ml * 0.40 = 200 ml of the solution is formaldehyde.
Step 2: Convert the volume to grams.
The density of the formalin solution is given as 0.98 g/ml. So, we can calculate the mass of formaldehyde as:
Mass = Volume * Density = 200 ml * 0.98 g/ml = 196 grams.
Therefore, there are 196 grams of formaldehyde in 500 ml of a 40% solution of formaldehyde in water.