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A sphere with radius of 2 m is entirely immersed in water. (1) Find the buoyant force on the sphere by water. (2) Find the buoyant force by the air. (Given water and air densities to be is 1000 kg/m3 and 1.3 kg/m3, respectively)
State a short paragraph or use a graphic organizer, to illustrate the relationship among the following concepts: favorable chemical change, enthalpy, temperature, entropy and free energy.
Draw constitutional isomers of C5H8 that are terminal and internal. Name each molecule according to IUPAC.
How much heat (in Joules) is gained by the water where a chemical reaction takes place in 100 mL aqueous solution and has a temperature increase of 14C? [hint: ignore any effects by the calorimeter]
waters heat of fusion is 80. and its specific heat is 1.0 . some velomobile seats have been designed to hold ice packs
What is the efficiency of the engine, with work done divided by the heat supplied expressed as a percentage? How could the efficiency be increased?
two samples of calcium flouride are decomposed into their constituent elements. the first sample produced 1.64 g of
Using the selection rules deltaS=0, deltaL=+-1 and deltaJ=0,+-1, predict which transitions are allowed from the ground level in A). Consider only transitions between terms within each configuration given.
Formulate a rule/guideline for determining the number of valence electrons from an electron configuration in elements with d electrons present
The side chains of asparagine and glutamine can undergo hydrolysis in aqueous acid. Draw the reactants and products for the deamination reaction. Name the products.
What is the final temperature of the water and pieces of metal?
Classify the following as Arrhenius, Bronsted-Lowry, or Lewis acid-base reactions. A reaction may fit all, two, one, or none of the categories. Cu^2+ + 4Cl- --> CuCl2^2-
Calculate the hydronium ion concentration and the pH after the addition of .25mL of .10 M HCl to each one. What accounts for the difference in hydronium ion concentrations? Explain this based on equilibrium concepts.
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