Math

posted by .

To have a constant concentration of .25 ppm of a substance with 18,000gal/water flowing, how much would I need to add per minute?
Does that make any sense?
How would I go about answering that? I don't want the answer, but maybe just a push in the right direction because I have NO idea.

Similar Questions

1. Science

I need to make 10 ml of bacitracin at 1 uM. I have purchased 5 mg of it. The MW of it is 458.6 g. How would I go about doing this and what would be my final answer?
2. Chemistry

Complete the following table for aqueous solutions of caffeine, C8H10O2N4. a) molality b) mass percent solvent c) Ppm solute All we're given is Mole fraction solvent= .900. How do I solve for the other parts with only this?
3. chem

how much water would you need to add to 20.0 mL of 2.0 M NaCl to make a 0.10 M solution?
4. chemistry

The environmental protection agency (EPA) wanted to study the particular materials in the atmosphere in Bogus Basin at 7200 ft elevation. The sampled air rate was at 1.00 liter per minute and was allowed to run 24 hours per day for …
5. Career Plans

Does this make sense? My Plan A is to do something with geology. I take deep interest in learning about Earth's structure and about the universe. Exploring and discovering solution connecting with earth would be very intersting. I
6. chemistry

If you have 12 moles of a substance, how many molecules do you have of that substance?
7. BioChem

If you want to determine the actual salicylate concentration for a sample that gives you a darker color than the highest standard, you would need to make a dilution of it. If you dilute it by mixing .25 mL of sample with .75 mL of …
8. Chemistry ppm

Hey guys, i have a question about how to figure out how much mass of a compound i need to find 130ppm here is the question. What mass of Fe(NH4)2(SO4)2*6H2O is required to prepare 2.25 L of a 130 ppm iron solution?
9. Chemistry

Caluculate the mass of ferrous ammonium sulfate (Fe(NH4)2(SO4)2.6H2O) you would need to add to a 4.0 mL volumetric flask to make a solution that is 75 ppm. I've already identified that Fe is 14.24% of the Mohr's salt, but how would …
10. Analytical Chemistry

I have a 0.00156 M solution of CuSO4*5H2O in water (from 0.0398 g of CuSO4*5H20 in 100 mL of water). How would I calculate the ppm of Cu of that solution from that information?

More Similar Questions