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A radioisotope decays. Which two types of nuclear change would yield exactly the same isotope as product?
A. alpha & beta decay
B. beta decay & positron emission
C. positron emission & gamma emission
D. beta decay & electron capture
E. positron emission & electron capture
Combustion reactions are exothermic. The heat of reaction for the combustion of butane, C4H10, is 687.8 kcal/mol. What is the heat of combustion for butane in kcal/gram?
chemistry of proteins and hemoglobin.1. protein a has a binding site for ligand x with a kdof 10-6m. protein b has a
There is an alternative procedure that uses K2CO3 instead of NaOEt; why can NaOEt or K2CO3 be used for the phenacetin synthesis
If a current of 2.00 ampere is passed for 48 hours, what mass of aluminum id deposited at the electrode? Assume 100% current efficiency.
The total mass of solid unknown dissolved in the sample was 0.1200 g. If the sample were dissolved to a final volume of 100.0 mL, and a 25.00 mL sample of the solution required 36.32 mL of EDTA solution, find the mass percent of CaCO3 that was pre..
Assuming constant pressure, rank these reactions from most energy released by the system to most energy absorbed by the system, based on the following descriptions
a 1.00l buffer solution is 0.250 m in hf and 0.250 m in naf. calculate ph of the solution after the addition of 100.0ml
Calculate the [H+], pH, and pOH in each of the following solutions in which the hydroxide ion concentrations are A) 0.0068M B) 6.4 X 10^-5M C) 1.6 X 10^-8M D) 8.2 X 10^-12M
How many mL of 5M NaCl are required to prepare 1500 mL of 0.002 M NaCl? What would be the concentration of the diluted solution from Problem expressed in mM, ?M, and nM
What volume (in milliliters) of 0.190 M NaOH should be added to a 0.135 L solution of 0.022 M glycine hydrochloride
a sample of nitrogen gas occupies 1.55 l at 27.0 c and 1.00 atm pressure. what will the volume be -100 c and the same
A green leaf has a surface area of 2.00 cm^2. If solar radiation is 1030 W/m^2, how many photons strike the leaf every second? Assume three significant figures and an average wavelength of 504 nm for solar radiation.
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