Recent content by Revengeance

ok so with the mass of the Fe(OH)3 we are given we can find the moles of it and turn it into concentration, is this what you are referring to?

Homework Statement If 0.025 g of Fe(OH)3 is added to 3.84 L of water, what mass will dissolve? Ksp is 2.8E-39. Homework Equations Ksp = [x][x] n= m/M The Attempt at a Solution I believe in this question that the starting mass is deemed irrelevant (although now i am starting to believe that is...

Hmm... so how would i check if Cu2+ or OH- is the limiting reagent or left in excess? I already have the concentration of Cu2+ at equilibrium. So in order to calculate the OH, would i have to use Ksp = [OH]^2[Cu] ?

Homework Statement Find the concentrations of all ions in the solution at equilibrium after 0.213 L of 0.433 M aqueous Cu(NO3)2 solution is mixed with 0.213 L of 0.120 M KOH solution. Ksp for Cu(OH)2 is 1.1E-15. Homework Equations n=m/M [Cu][OH]^2 = Ksp .. ?The Attempt at a Solution ok so for...

Homework Statement Hello all, I am doing this lab http://scc.scdsb.edu.on.ca/Students/onlinecourses/Sikora/sch4u/v12/60.pdf i am stuck on trying to find hte concentration of ch3cooh Homework Equations n = m / M and c = n*vand i think the ideal gas law could be used but not sure The Attempt...

so i know the lab looks something like this, and the Fg of the small mass will cancel out the fty in the tension, therefore ftx controlling the motion.

Homework Statement So referring to this lab , http://static3.mbtfiles.co.uk/media/docs/newdocs/international_baccalaureate/physics/824297/html/images/image12.pngIn this lab you are holding the plastic tube and twirling it to make the small mass spin in a circle. Keep in mind there is a mass on...

so this is how the experiment went: we took a styrofoam cup , weighed it, added water into the cup and weighed it again. We then recorded the temperature of the war which was 23 degrees celcius. We then put an ice cube into the styrofoam cup with the water and waited for it to melt, we then...

So i did a lab were we melt an ice cube in water. So i have to find the heat of fusion for the ice cube. But i am not sure how to do that. What i was thinking of doing is finding the energy released by temperature of the ice cube increasing, then make that value of q, equal to m*hf, when it is...

help please?

An automobile tire has a pressure of 210kPa at 20.0 degrees celsius. What will be the tire pressure after driving for some time if the temperature rises to 35.0 degrees celsius. The equations we have are P1*V1/T1 = P2V2/T2 V1/T1=V2/T2

how come they all cannot be reduced by a reducing agent such as hydrogen or carbon, why is it that only some can, the only thing i came up with is that, only those metals that are listed under the activity series can.

I tried it during a lab, and nothing had happened so i am not sure, but when i added nitric acid to copper metal a brown gas had formed, and i am wondering why nitric acid reacts with copper but not copper oxide, and the only conclusion i am at, is that copper oxide does not react with nitric...

Why is it that nitric acid won't react with copper oxide, but it will react with copper?

Oh, so the heated mixture is copper + CO2? But if it was like that how would nitric acid be added.