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What is referred to by the spontaneous breakdown of an atomic nucleus that results in energy release and matter from the nucleus?
A hydrate has the following percent composition: Pb = 54.61%, C = 12.66%, H = 1.61%, O = 16.88% and H2O = 14.24%. What is the formula of the hydrate.
An alkane with a molecular formula of C8H18 reacts with chlorine in the presence of light and heat to give a single monochloride C8H17Cl. What is the most reasonable structure for the starting alkane
A student wants to make a pH 4.0 buffer solution. She decides to use a buffer made from formic acid and sodium formate (NaCOOH).
Describe the difference between the following and list any particular advantage possessed by one over the other a)filters and monochromators as wavelength selectors
If the extracellular [Na+] is 0.10 M and the solubility in water of sodium urate is 0.072 g/100 mL, what is the minimum urate ion concentration (abbreviated [Ur - ]) that will cause a deposit of sodium urate
A 250.0 gram metal bar requires 5.866kJ to change its temperature from 22.0C to 100.0C. What is the specific heat of the metal
Suppose the other isomer of PtCl2(NH3)2 is given the same treatment, it yields the second isomer of [Pt(NH3)2(py)2]Cl2, as well as finally a mixture of PtCl2(NH3)2 and PtCl2(py)2. Recognize the starting and product isomers as either cis or Trans.
A rolaid tablet contains calcium carbonate, which neutralizes stomach acid. if 44.55 mL of 0.448 M hydrochloric acid is required to neutralize one tablet, how many milligrams of calcium carbonate are in a rolaids tablet
Determine the pH of the solution containing 8*10^(-3) M each of HF and NaF. Assume that NaF dissociates completely. Acid Dissociation constant for HF is Ka=6.3*10^(-4).
What is the chloride concentration when 25ml of 0.1 M AlCl3 and 25 ml of 0.5 M NaCl are mixed together. Assume the volumes are additive.
How many photons are required to heat 255 mL of coffee from 25 degrees celcius to 62 degrees celcius?
what happened when the isolated fraction, floating on top of the solution,
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