Math
How do you add fractions??
physics
What would be the final temperature when 125g of 25 degrees Celcius water is mixed with 85g of 45 Degrees Celcius water? ( hint: Equate the heat gained by the cool water with the heat lost by the warm water.)
Math
How do you find the total number of maximum and minimum points of the function whose derivative is given by f^1(x)=x(x-3)^2(x+1)^4 ???
Chemistry
Calculate the pH at the equivalence point when 50 mL of 0.098 M propionic acid is titrated with 0.340 M NaOH. I tried solving for the volume of NaOH and them using the total volume and then plugging it in to [H+][A-]/[HA] and used the Ka value for propionic acid but it was not...
Chemistry
Calculate the pH of a buffer solution that contains 0.60 M NaH2PO4, and 0.26 M Na2HPO4.
Chemistry
The pH of an 0.0870 M solution of weak acid A is 2.20. The pH of an 0.0830 M solution of weak acid B is 4.07. The pH of an 0.0890 M solution of weak acid C is 5.13. Identify the three acids from among those listed below (the Ka values are listed in Appendix E of your textbook)...
Chemistry
I'm not really sure how to go about doing this problem... What is the pH of a 7.40 x 10-3 M solution of NH4Cl? Help is appreciated! Thank you
algebra
write and inequality describing this region. will an 18 wheeler hold 71 refrig's and 118 tv's or will it hold 51 refig's and 176 tv's?
Chemistry
Awesome! Thank you
Chemistry
An aqueous antifreeze solution is 31.0% ethylene glycol (C2H6O2) by mass. The density of the solution is 1.039 g/cm3. Calculate the molality of the ethylene glycol.
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