Sunday

April 20, 2014

April 20, 2014

Total # Posts: 6

**Chemistry**

I just need this checked over. I am not sure about the last part D. Temp c KBr 20 65 40 80 60 90 80 100 100 110 At 100 C, 10.5 g KBr/10gH2O = 105 g/100 g (just multiply the top and the bottom by 10 to give you 100 g H2O) B) Since the solubility at 100C is actually 110, no, it ...

**Chemistry**

Calculate the amount of solute needed to make the solution. I can't remember how to set these up. .50kg of a 18% (m/m) KOH solution

**Chemisrty**

Calculate the amount of solute needed to make the solution .50kg of a 18% (m/m) KOH solution

**Chemistry**

Are these balanced and are my products correct? 3HNO3(aq)+Al(OH)3(s) = Al(NO3)3+3H2O(l) Na2CO3(s)+H2SO4(aq) = H2O(l)+CO2(g)+Na2SO4(aq) I just wanted someone to look this over and see if I did it right

**Chemisrty**

Temp c KBr 20 65 40 80 60 90 80 100 100 110 At 100 C, 10.5 g KBr/10gH2O = 105 g/100 g (just multiply the top and the bottom by 10 to give you 100 g H2O) B) Since the solubility at 100C is actually 110, no, it isn't saturated (105 is less that 110). C) Yes, because the solu...

**Math problems**

GOAL: Isolate the variable (x) Multiply both sides by 24. 7x + 2 = 288 Subtract 2 fromboth sides. 7x = 286 Divide both sides by 7. x = 40.9 The next question is the same, but instead you can just cross multiply. x/3 = 224/720 720x = (224)(3) 720x = 672 x = 0.93

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