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In an insulated container, a hot piece of iron (cp =0.4513 J/g-C) at 1490. C was added to 200. g of water (cp =4.184 J/g-C) at 20. C. The temperature of the resulting mixture became 90. C. What mass of iron was present?
how would each affect the calculated molecular mass of the solute?
What is the minimum concentration of ammonia that should dissolve AgBr to produce a 0.01 M Ag(NH3)2+ solution
Physical propoerties and intermolecular forces, What type of intermolecular forces accounts for the following differences in each case?
The following gas phase reaction is second order. 2C2H4(g)--->C4H8(g) Its half life is 1.51 min when [C2H4] is 0.250 M. a.What is k for the reaction?
A sample of neon gas used in a neon sign occupies a volume of 1.50 L at a pressure of 630 torr. Calculate the volume of the gas if the pressure in the glass tube of the sign is 793 torr.
Can someone please help me I need to A. Write the complete equation for each reaction that produced a precipitate
Radioactive isotope X has been found in rock units S and Q. Isotope X breaks down into isotope Z with a half life of 250 million years.
Determine the structure of one active component and identify three functional groups on each molecule. Based on the functional groups present in the drug molecules, predict the physical properties of the molecule the drug would interact
a 100.0 ml aliquot of .200 M aqueous potassium hydroxide is mixed with 100.0 ml of .200 M aqueous magnesium nitrate. what mass of precipitate is formed? what is the concentration of each ion remaining in the soulution after the reaction is complet..
Estimate how many barrels of fluid this tank could hold. Clearly state any assumption you must make to determine this and explain how you arrived at your assumption
Plot pH values as a function of volumes of added KOH and suggest appropriate indicators for the titration.
Consider an aluminum atom to be a sphere with radius equal to 143 pm and calculate the volume actually occupied by the atoms in your aluminum cylinder
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