Question

What is the concentration nitrate ions in the final combined solution after 25.25 mL of 1.250 M Al(NO3)3 is mixed with 55.25 mL of 0.5250 M Ca(NO3)2

Answer 1

Answer: 1.900 M

Step-by-step explanation:

From the aluminum nitrate, there are
`(1.250)(25.25/1000)(3)` moles of nitrate ions.

From the calcium nitrate, there are
`(0.5250)(55.25/1000)(2)` moles of nitrate ions.

Therefore, the concentration is
`((1.250)(25.25/1000)(3)+(0.5250)(55.25/1000)(2))/((25.25+55.25)/1000))=1.900 \text{ M}`