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Complete the following equations:
a. 105B + 10n -> ? + 42He
b. 2310Ne -> 2311Na + ?
c. 12151Sb + ? -> 12152Te + 10n
A 29.0-g sample of ice at -11.0°C is mixed with 113.0 g of water at 71.0°C. Calculate the final temperature of the mixture assuming no heat loss to the surroundings.
suppose you have an aqueous solution contains 158.2 g koh per liter its density is 1.13gcm3. you want to prepare a
Place the following elements in order of decreasing atomic size: silicon, nitrogen, helium, potassium, magnesium, and carbon.
1) the symbols for the elements in the compound. 2) the oxidation numbers of the elements involved and write them as superscripts to the right of the elemental symbols
The stratospheric ozone layer helps to protect us from harmful ultraviolet radiation. It does so by absorbing ultraviolet light and falling apart into an molecule and an oxygen atom, a process known as photodissociation.
Write the condensed electron configurations for the following atoms and indicate how many unpaired electrons each has (a)mg (b)ge (c)br (d)v (e)y (f)lu
In a particular photoelectron spectrum using 21.21 eV photons, electrons were ejected with kinetic energies of 10.01 eV, 8.23 eV, and 5.22 eV. Sketch the molecular orbital energy level diagram for the species, showing the ionization energies of th..
What is the difference in reaction rate between a single step bi molecular reaction dye and NaCIO
Using the data on a seperate page for the determination of heat of nuetralization extrapolate to the mixing time, determine the intial and final temp for the solutions. 50mL of 2.0M HCL and 2.02M NaOH were mixed and the heat neutralization was det..
a 0.1276 g sample of an unknown monoprotic acid was dissolved in 25.0 ml of water and titrated with 0.0633 m naoh
which works better as a solvent for benzoic acid water or the solvent pair of methanol and water.
Which salts are more effective for cold and hot packs, KNO3, NH4NO3, MgSO4, CaCl2, MgCl2? which are most cost effective? Maximum and minimum T for both?
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