0.5g of fuming h2s04 oleum is diluted with water. This solution is completely neutralized by 26.7ml of 0.4N naoh. Find the percentage of free s03 in the smaple solution. The answer 20.6%
Assume that 50ml of 0.01M edta solution were added to 25ml of solution and the excess edta required 20ml of 0.005M mg solution. Calculate ppm co2 present.
the answer 942ppm
Find the concentration of calcium in ppm in a 3.5g pill that contains 40.5mg of ca
The answer 1.16ppm
Who helps me