Ideal

A student mixes 41.0 mL of 2.54 M Pb(NO3)2(aq) with 20.0 mL of 0.00237 M Na2SO4(aq). How many moles of PbSO4(s) precipitate from the resulting solution? What are the values of [Pb2 ], [SO42–], [NO3–], and [Na ] after the solution has reached equilibrium at 25 °C?

I know the moles of Pb(NO3)2=.10414moles

moles of Na2SO4 is 4.74*10^-5 moles

equation: Pb2+ (aq)+SO42-(aq)<-->PbSO4(s)

Limiting reagent is Pb

KsP: PbSO4 is 2.5*10^-8

I don't understand how to get the concentrations?

the KsP equation is [Pb2+][SO42-]

The question is I need to calculate the volume of CO2 produced. I have the pressure which is 745 atm, my temperature which is 23C. 1.00mL Ca2+ and 5.00mL .CO32-. In this experiment I had to add to add 100 drops of HCL for it to precipitate.

The chemical equation is CaCO3+2HCL>>>CO2+CaCL2+H2O.

I know I need to use PV=Nrt to get pressure but I am having trouble getting to the moles. Thanks for the help

I am going to college in nj and I plan to become an orthopedic. If i complete my studies in nj do i have to practice only in nj or can i practice anywhere in the United States?

I am going to college and I am not sure which is better.

I am going to use it to take notes in class and research.

I am going to save all my documents to my USB or Jumpdrive or email it to myself.

I am thinking tablet because it would be easier for me to carry if I carry text books and it is small but I am thinking the macbook pro because I can use it on my lap because I don't usually type things at a desk.

My family is not that rich. I am planning to dorm. I did my fafsa and I am confuse about what do fafsa pay for.

How do you get the books?

I plan to do clubs and sports do they help with that like money wise?

How can I get scholarships that are renewable?

My dad is the only one who really works and I tried hard looking for a job and i really can't find anything. I don't want to put any pressure on him. My dad is the best and it makes me cry when i see him come home tired and then have to go to the next job. Plus he is the only one who drives, he doesn't let me drive because we have one working car. I going to college in a couple of months. any advise and please don't be harsh.

Any advise or tips for college would be helpful.

I know i want to be a surgeon so what would I choose as a major

Bio medical engineering or biology?

Question : Indicate a person who has had a significant influence on you, and describe that influence.

Everyone was inveigled by someone: a parent, teacher or a friend. I was influenced by my cousin who is like an older sister to me, a mentor or a teacher. Her name is ****** We are two different people with varying tastes. In other words we can be considered opposites. One might wonder what it is about her that influenced me greatly.

The one thing that affected me the most was observing her volunteer. When I was about ten or eleven years old I would go to her house and spend time with her family. We went to many recreational places such as Sixflags, Madame Tussads and Dorney Park. This particular summer, I rode with my aunt and her to the hospital and my cousin assisted the patients. When I saw her volunteer during the summer it made me want to go to Trintas Hospital, a local hospital near my house.

After seeing her go to the hospital for a week I started to volunteer at the age of thirteen. I worked at Trintas Hospital, Plaza Rehabilitation Center, and my school office in eighth grade. Then I helped my school secretary in ninth grade and I am currently helping her during my senior year.

I see ******* as mentor because she gets me through troubles I have never been threw before. When I was in getting into high school she told me that I had to take the SAT, ACT and where I go and take free practice tests. Some family members would let one suffer and figure it out on their own but she gave me a boost and still stood by me when I was confused and so did her mom.

As a teacher, I got a lot of help from her. When I learned a new topic in school and I understood half of it and she would help me comprehend the rest. When I was in tenth grade, I had to take the written and road test. The written test was easy for me but the road test was hard for me. She gave me tips and helped me the most in parallel parking which was my weakness and I did well in my test.

With her helping me so much and spending time with me I got to see a different side and seeing her do all this for me makes me happy and all this influenced me to do the same for others. When she teaches me something I put it to good use and show it to someone else. Now a day, teens are getting influenced my negativity taking place in the world and sometimes teenagers are often influenced by adults, but I found my inspiration in a person of my generation who taught me the importance of service and lending a hand to people who needs one.

Okay I went to give my drivers exam and I failed because my birth certificate wasn't in the proper condition. They accepted it when I went to get my permit

I didn't agrue with the lady so

I went to get a new birth certificate and the last name caused a problem so my last name changed.

My bluecard, permit and all the other papers have my old last name so what am i suppose to do. I need a new permit and a new bluecard and identification

I am a teenager not even 18 yet so help please

I am in New Jersey

I want to be a surgeon but my question is if i get my degree in Illinois can I practice only in Illinois or i can practice in nj, maryland and all over America?