biology
how is it possible for an enzyne to lower the required energy of activation for a reaction.
chemistry
How many moles of antifreeze (a molecular substance) must be added per liter of water to protect the cooling system of a motocar to -30 degrees F.
Kinesiology
Joey weighs 77 lb and sits on a seesaw at a distance of 30 inches from the fulcrum. Jenny weighs 67 lb and sits on the opposite side of the seesaw at a distance of 48 inches from the fulcrum. Mikey weighs 30 lb and wants to play but doesn’t know where to sit in order to m...
11th grade
so I have this problem and I dont know what numbers to multiple and whatnot. Can someone help me? This is the problem: 4000 g Fe2O3* 1mole Fe2O3/159.68 gFe2O3* 3mole CO2/1mole Fe2O3
pre-calculus
2y^-3 = 4e^(-x/2)/(1+e(-x/2)) my teacher gave this problem in my chem class and i dont know what he is really asking , does any one have an idea if i have to solve for y or what's going on.. how would this be done..
Chemistry!!
42.8 divided by 181 equals 0.236
How Children learn
16 n 20 do0nt know but the rest is perfect.good look.
science
Can you help me balance some equations? I tried and failed several times... 1. calcium hydroxide + phosphoric acid yield calcium phosphate + water 2. copper + sulfuric acid yield copper(II) Sulfate + water + sulfur dioxide 3. hydrogen + nitrogen monoxide yield water + nitrogen...
physics
A particle is released on the smooth inside wall of a cylindrical tank at A with a velocity v which makes an angle beta with the horizontal tangent. When the particle reaches a point B a distance h below A, determine the expression for the angle theta made by its velocity with...
Cost Accounting
Katherine Company's Sales Budget Has The Following Unit Sales Projection For Each Quarter Of The Calendar Year 2009. January -March 540,000 April-June 680,000 July-September 490,000 October-December 550,000 Total 2,260,000 Sales for the first quarter of 2010 are expected t...
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