Inorganic Chemistry Answers

calculate the dosage in milligrams per kilogram body weight for a 135 lb adult who takes two aspirin tablets containing 0.324 g of aspirin each. calculate the dosage for a a 40 lb child who also takes two aspirin.

Calculate the number of moles of solute present in 255 mL of 0.250 M CaBr 2.

Calculate the heat change in kilocalories for condensation of 3.5 kg

kg of steam at 100 

∘

C

Draw lewis structures and spatial build of the following compounds

H2XeO4

H4XeO6

HXeO3^-1

He then started to separate lead chloride from the other cations in the group. Properly noting to maintain the mixture hot, he successfully separated the residue and the centrifugate using a micropipette. After adding Potassium Chromate solution to the centrifugate, a yellow precipitate was not observed;

For a spontaneous change ΔS_total must be positive.

During a chemical change: ΔS_total = ΔS_system + ΔS_surroundings

In the ligand exchange reaction, where ‘en’ stands for ethylene diamine:

Co(NH₃)₆³⁺ + 3en → Co(en)₃³⁺ + 6NH₃

Discuss qualitatively the size and sign of the entropy change of the surroundings and the system, and comment on the stability of the ethylene diamine complex relative to the ammine. (4 marks)

In a hypothetical reaction, 17.45 g chloric acid, HClO₃, is reacted with 88.37 g tetraphosphorus decaoxide to form dichlorine heptoxide and an acid H₂P₄O₉. Calculate the amount of the excess reactant left over.