Janice P

Calculate the volume of 36.0% reagent HCl solution (with a density of 1.18 g/mL) which on dilution

with water will give 15.0 L of 0.346 M HCl.

Veterinarians use Donovan’s solution to treat skin diseases in animals. The solution is prepared by mixing 1.00 g of AsI3(s), 1.00 g of HgI2(s), and 0.900 g of NaHCO3(s) in enough water to make a total volume of 100.0 mL.

(a) Compute the total mass of iodine per liter of Donovan’s solution, in grams per liter.

(b) You need a lot of Donovan’s solution to treat an outbreak of rash in an elephant herd. You have plenty of mercury(II) iodide and sodium hydrogen carbonate, but the only arsenic(III) iodide you can find is 1.50 L of a 0.100 M aqueous solution. Explain how to prepare 3.50 L of Donovan’s solution starting with these materials.

For a) I got 13.9 g/L

A solution of acetic acid and water contains 205.0 g L21 of acetic acid and 820.0 g L21 of water.

(a) Compute the density of the solution.

(b) Compute the molarity, molality, mole fraction, and mass percentage of acetic acid in this solution.

(c) Take the acetic acid as the solvent, and do the same for water as the solute.

Consider the following two reactions, each of which will go to completion on strong heating:

Mg(OH)2(s) --> MgO(s) + H2O(g)

Mg3N2(s) + 3H2O(l) --> 3MgO(s) + 2NH3(g)

If a 2.50 g mixture of Mg(OH)2(s) and Mg3N2(s) is treated with water and strongly heated giving 2.00 g

MgO as the exclusive solid product, what was the mass of Mg(OH)2(s) in the starting mixture?

Heating cyclohexanol, C6H11OH, produces cyclohexene, C6H10, and water vapor. Write down

the correct balanced chemical equation for this rxn. If this rxn gives a yield of 86.2% and the

cyclohexanol is only 92.3% pure (the rest of the percentage by mass consists of impurities that can not

react and give the intended product), calculate the mass of cyclohexanol that you must start with to

obtain 45.0 g of cyclohexene by this rxn.

Is it possible for one substance to be an oxidizing agent in one reaction but a reducing agent in another? If so, give an example.

> I was thinking yes, but I'm not sure about why. I was also wondering if Cu2+ and Cu count as the same substance.

Is it possible for one substance to be an oxidizing agent and a reducing agent at the same time? If so, give an example.

Okay so my laptop fell off my bed while plugged in and the cord got bent. The cord is broken, but after the battery of my laptop died i tried to charge it, and it wouldnt work. Could there be something really wrong with it? If so, how do i get it fixed, where, and how much would it cost.

If so, how can I correct it to make it 100% correct?

During a study of these two men, you will notice right away that they are both particularly loyal: Robin Hood to his merry men, and David to his people.

Okay, so I had to make a line graph for a science fair project so I used Microsoft excel, but I don't like the way it looks. It seems too crowded. So, can you change the look of the lines on the line graph in excel? and, if not, is their another program I can input the information to and have it look neater?

I appeared to have traveled somehow during my sleep.

Any ideas for a different sentence and how to start out my story are appreciated. I travel back in time somehow and some to a place around 70-90 AD. Also I need sentences to describe the setting.

Is there a cord that plugs into a laptop and a television screen that projects the image from the laptop onto the tv? Such a cord would make my life easier. If it exists, what is it called and where can i get one??

I know this sentence sounds a little weird anyway, but I can't think of another way to word it. Suggestions gladly accepted!

"This caused many people to have to stay on the ship sinking in the Atlantic Ocean in 1912."

Would I need a comma and if so, where? please give a reason if you can. thank you so much!

O.k., i heard this on Comedy central in a guys act....

the guy was listening to his kids baby monitor and he hears," Daddy, I have a joke for your career." The dad goes up to the kids room and says,"Really, you thought of a joke for my act. What is it?" "I just thought of it Right now. Why don't dinosaurs talk?"

"I don't know why don't dinosaurs talk?" " Because they're all DEAD!" heeheehee.

if someone else said this joke i don't think it would be funny but the fact that a 4 year old kid thought of that made it HILARIOUS!

You should have heard the guys voice it was FUNNY!!!

Brad pitt in benjamin button or Orlando bloom in lord of the rings and Pirates of the Carribean

i've beaten the game before but never got the trophy....HELP!!!!