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Why is naturally occurring iron non-magnetic except when it is exposed to an external magnetic field (a secondary magnetic force)? How is it possible to create a permanent magnet (ferromagnet) from a naturally occurring sample of iron?. Explain the importance of each step in making the magnet (i.e. what is being accomplished at the atomic level?).
Give the quantitative species inventory for the system ultimately resulting from a mixture
Two vessels are labeled A and B. Vessel A contains NH3 gas at 73 degrees C and vessel B contains Ne gas at the same temperature. If the average kinetic energy of NH3 is 7.1 10-21 J/molecule at 70 degrees C.
If 13.93 mL of NaOH solution is required to reach the stoichiometric point, what is the molar concentration of the sodium hydroxide solution?
Is the central carbon atom sp2- or sp-hybridization? What about the hybridization of the terminal carbons? What shape do you predict for allene?
the rate constant for a certain reaction is 3.40times10-3 . if the initial reactant concentration was 0.750 what will
has Kp = 45.9 at 763 K. A particular equilibrium mixture at that temperature contains gaseous HI at a partial pressure of 4.00 atm and hydrogen gas at a partial pressure of 0.273 atm. What is the partial pressure of I2?
When 35.6 L ammonia and 40.5 L oxygen gas react at STP, NO(g) and water are produced. How many grams of NO(g) are produced assuming 100% yield?
an archeologist unearths a skeleton of a mastodon. analysis shows the skeleton to a carbon-14 activity of 2 cmp counts
Determine the number of milliliters of 0.0300 M unknown metal hydroxide solution that is required to neutralize 25.00 mL of 0.0150 M phosphoric acid.
Write a balanced equation for the neutralization of each of the following: a)H3PO4(aq) and NaOH(aq) b)HI(aq) and LiOH(aq) c)HNO3(aq) and Ca(OH)2(s)
The enthalpy of activation of a first order reaction is 123kj/mol. The rate constant at 80 C is 1.73x10^-2 s^-1. What is the rate constant at 35 C. (R=8.31 j/mol K)
Diethyl ether has a boiling point of 345 degree C and 1 butanol has a boiling point of 117 degree C. Both of these compounds have the same number and types of atom. Explain the difference in their boiling points
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