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An unknown element crystallizes in a body-center cubic crystal structure. The atomic radius of the substance is 2.532 Å and its density is 1.208 g/cm3.
Calculate the molar mass of the unknown substance.
molecular I2 dissociates into iodine atoms at 625 K with a first-order rate constant of 0.271 s-1. What is the half-life?
The aluminum ion reacts with the hydroxide ion to form a precipitate of aluminum hydroxide. Calculate the concentration of aluminum ion to just begin the precipitation of aluminum hydroxide in a solution that has a hydroxide concentration of 1.0 x..
what is the phase of matter of the solute and solvent of sterling silver?
Calculate [H+] and the pH of the following solutions
To what volume should you dilute 95mL of a 12.0M H2SO4 solution to obtain 1.80M H2SO4 solution
An electron in the n2= 5 level of an H atom emits a photon of wavelength 1282.17 nm. To what energy does the electron move. Is the photon in the visible region
What would the potential of a standard hydrogen (S.H.E.) electrode be if it was under the following conditions?
Draw the lewis structures for each of the following molecules or ions. Which do not obey the octet rule? (a)NO (b) AlH3 (c) ICl2^- (d) OPBr3 (the P is the central atom) (e) XeF4
Determine the intermolecular distances for the two molecules and account for their similarity or difference.
What is the identity of the acid present in carbonated beverages that hastens the hydrolysis of aspartame
what is the minimum number of Kilo Joules needed to change 40 grams of water 100 C to steam at the same temperature and pressure?
What is the vapor pressure of isopropanol at 200 C if its molar volume calculated by a first order virial expression
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