Triston

For silver chloride in water Ksp = 1.8 x 10-10. How many moles of silver chloride can be dissolved in 1.0 L of water? If the solubility of CuBr in water is 2.0 x 10-4 mol/L, what is the Ksp of CuBr? I cant even figure out how to start on this. It is not in my textbook, it's not in lecture notes, its not on google. So i havent been able to attempt much. If someone could point me in the right direction or even show me how to do an example i would be greatful. Thanks

32000/M(32 for O2) Thanks for the help!

A 100 L steel tank contains 32 kg of oxygen, O2. If the temperature is 25ºC, what is the approximate pressure inside the tank? Choose one answer. a. 25000 kPa b. 800 kPa c. 2100 kPa d. 2.1 kPa e. 25 kPa The correct answer is MEANT to be 25000 kPa. P = nRT/V n = 32000/16 = 2000 T = 298 K R = 8.314 V = 100L = .100 m3 P = 2000 x 8.314 x 298 / .1 = 4955144/.1 =49551440 Pa or 49551.440 kPa Which just seems completely wrong. The only thing i wasnt sure about was the value i entered for volume, so i tried this: V = nRT/P V = 2000 x 8.314 x 298/2.5 x 10^-7 pa = 4955144/2.5 x 10^-7 = 1.98 x 10^13 This was way off though. So now i have absolutely no idea. Can someone please help? Thanks!

Wasnt really what i was asking. I found out today though. Slants can be used to increase surface area for growth and are good for storage. As are deeps. Broths are good for growing culture. Thanks though

When does one use culture-medium slants, deeps or broths? My lecturer made no mention of it at all, what so ever and this information is hard to find in any textbooks i own or even on google. Thankyou in advance! (I also cant contact my lecturer.)