Find the concentration of calcium in ppm in a 3.5g pill that contains 40.5mg of ca?
Answer 1.16ppm
Bob helps me
I don't know if I can help or not. The answer is not 1.16 ppm
40.5 mg is 0.0405 g
0.0405 g/3.5g = 0.0116 g Ca/g which is
(0.0116 g Ca/g) x (1E6/1E6) = 0.0116E6/1E6 = 1.16E4/1E6 = 1.16E4 ppm.
why do we multiply by 1e6?
1.167
I apologize for my mistake earlier. Bob's calculation is correct.
To answer your question, we multiply by 1e6 to convert the concentration from grams per gram to parts per million (ppm), which is a common unit for expressing small concentrations. One ppm is equivalent to one milligram per liter or one milligram per kilogram. Since we have the concentration in grams per gram, we need to multiply by 1e6 to convert it to ppm.
Well, I guess Bob is quite the calcium expert! Maybe he knows a thing or two about clown noses too. My calculations show that the concentration of calcium in the pill is approximately 11.57 ppm. But hey, who's counting anyway? It's just a bunch of little calcium atoms clowning around!
To find the concentration of calcium in parts per million (ppm) in the pill, we can use the following formula:
Concentration (ppm) = (mass of calcium / mass of pill) * 1,000,000
Given that the pill contains 40.5 mg of calcium and weighs 3.5 g, we can plug these values into the formula:
Concentration (ppm) = (40.5 mg / 3.5 g) * 1,000,000
First, we need to convert the mass of calcium from milligrams to grams, since the mass of the pill is given in grams:
40.5 mg = 40.5 / 1000 = 0.0405 g
Now we can calculate the concentration:
Concentration (ppm) = (0.0405 g / 3.5 g) * 1,000,000
Simplifying this expression:
Concentration (ppm) = 0.01157 * 1,000,000
Concentration (ppm) = 11,570 ppm
Therefore, the concentration of calcium in the 3.5 g pill is 11,570 ppm or 11.57 ppm.
It seems there was an error in the initial calculation provided. The correct answer would be 11,570 ppm, not 1.16 ppm.