# Cemistry

18 results

cemistry
how to identify bond angles

cemistry
what information is provided by the atomic mass?

cemistry
what is an equation for ascorbic acid and sodium hydrogen carbonate?

Cemistry
Will a fluoride concentration of 1.0 mg/L be soluble in a water containing 200 mg/L of calcium?

Cemistry
Can an object experience both a physical and chemical change at the same time?

cemistry
what results should we expect when we incubate a variety of lipids of differnet degrees of saturation with iodine?

CEMISTRY
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?

Cemistry
Why do we have to heat KMnO4 solution when we have to do the titration with the oxalate ions for such reaction?

cemistry
when 2.13 moles of C3H8 burn in excess oxygen, how many moles of CO2 will be formed? Assume this is a complete combustion

Cemistry
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?

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

Cemistry
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.

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?

physical cemistry
f 20.0mL of 0.122M NaOH are required to reach the first equivalent point of a solution of citric acid(tripotic acid H3C6H5O7).How many mL of NaOH in total are required to reach the second equivalence point?

Cemistry
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 ...

Cemistry
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 ...

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...

Cemistry
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 ...

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