Monday
May 20, 2013

# Posts by Cynthia

Total # Posts: 502

Chemistry
How many moles and how many grams of potassium alum, KAl(SO4)2 · 12 H2O, can be prepared from 5.00 g of aluminum?

Chemistry
Which one ?

Chemistry
Calculate the amount in moles and the mass in grams of KOH needed to convert 1.50 g of aluminum to KAl(OH)4. Balanced equation = 2 Al (s) + 2 KOH (aq) + 6 H2O (l)->2 KAl(OH)4 (aq) + 3 H2 (g)

Chemistry
Calculate the volume (in mL) of 9.0M H2SO4 that you would need to convert 0.070 moles of KAl(OH)4 to K2SO4 and Al2(SO4)3 according to the following equation: 2 KAl(OH)4 + 4 H2SO4->K2SO4 + Al2(SO4)3 + 8 H2O

Chemistry
Calculate the amount in moles and the mass in grams of KOH needed to convert 1.50 g of aluminum to KAl(OH)4. Balanced equation = 2 Al (s) + 2 KOH (aq) + 6 H2O (l) ¨ 2 KAl(OH)4 (aq) + 3 H2 (g)

Calculus AP need help!
oops.. i thought 1/2 to -3/2. now i understand. thanks

Calculus AP need help!
1. f(x)=√5x+6, find f'(x) 2. f(x)=√4x^2+3x+4, find f'(x). i got stuck. f(x)=√5x+6=(5x+6)^1/2 f'(x)= 1/2(5x+6)^-3/2*(5).

algebra. help!!
my answer is 63.56. i dont know if its right answer. here this problem: It takes Scott an average of 45 min to prune 1 tree. Victor takes 65 min to prune a tree on average. The Scott-Victor Pruning Service has the contract to prune 92 trees in Flagstaﬀ, AZ. How long wil...

COLLEGE CALCULUS. HELP!
Find the derivative of the function. 1. F(x)= (1+2x+x^3)^1/4 2. f(t)= (1+tant)^1/3

COLLEGE CALCULUS. HELP!
i got it thanks

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