March 23, 2017

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Number of results: 17

how to identify bond angles
January 25, 2012 by chemistry

what information is provided by the atomic mass?
December 8, 2010 by bre

what is an equation for ascorbic acid and sodium hydrogen carbonate?
October 22, 2010 by Mary

Will a fluoride concentration of 1.0 mg/L be soluble in a water containing 200 mg/L of calcium?
October 21, 2012 by John

Can an object experience both a physical and chemical change at the same time?
September 14, 2010 by Jim

what results should we expect when we incubate a variety of lipids of differnet degrees of saturation with iodine?
December 11, 2011 by Sharon

Consider a weak acid HX. If a 0.10 M solution of HX has a pH of 5.87 at 25°C, what is ΔG° for the acid's dissociation reaction at 25°C?
May 1, 2012 by Sarah

Why do we have to heat KMnO4 solution when we have to do the titration with the oxalate ions for such reaction?
May 18, 2010 by Tukana

when 2.13 moles of C3H8 burn in excess oxygen, how many moles of CO2 will be formed? Assume this is a complete combustion
October 30, 2011 by christopher

When a 0.952 g sample of an organic compound containing C, H,and O is burned completely in oxygen, 1.35 g of CO2 and0.826 g of H2O are produced. What is the empiricalformula of the compound?
September 29, 2011 by Eddy

college cemistry
What is the pH for the solution made from 11.10 mL of 0.278 M HCl solution mixed with 70.90 mL of 0.1300 M ammonia solution ? Note that the pKa for NH4+ is 9.241 8.94 9.24 8.77 9.72 9.54
May 27, 2010 by Lucinda

A solution is 36% silver nitrate (AgNO3) by mass. The density of this solution is 1.44 g/mL. The formula weight of AgNO3 is 170 g/mol. Calculate the molality of AgNO3 in this solution.
June 9, 2010 by Swagato

UOG. Cemistry
Supposing we allow 272g of phosphorus to react with excess oxygen which forms tetraphosphorus decoxide P4O10 in 89.5% yield. In the second step reaction, a 96.8% yield of H3PO4 is obtain by reacting P4O10 with 6H2O. Work out the mass of H3PO4 obtained?
May 17, 2016 by Kawale Bogken (Boryal)

If you have a chemical reaction in equilibrium and add more of the product...what happens to the product's concentration, if it doesn't increase? Does it stay the same or decrease a little? I know the reactants concentration will increase and if it is an endothermic reaction ...
February 19, 2010 by Connie

Hi, I've been trying to solve this chemical equation for the last 30 minutes and am only confusing myself. I am wondering if the product I obtained is correct. The question is to write a balanced equation for the below reaction and be sure to indicate the states and if there ...
March 16, 2012 by Julie

AP Cemistry
Calculate the heat that must be supplied to 10.5 g of Ne(g) at 0.15 atm to raise its temperature from 24◦C to 54◦C at constant pressure. Assume that neon behaves as an ideal gas. Answer in units of J. [So, I know that we would use q = mCDT at some point but because...
October 28, 2016 by David

Tom wanted to test his hypothesis that plants grow better at room temperature than in cold temperatures. He placed an ivy plant in the refrigerator, which had no light source.He also placed a spider plant in the window in his room. b. What were Tom's controls? Is it the ...
September 14, 2015 by anonymous

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