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Problem- Calculate the pH of a solution made by mixing equal volumes of a solution of HCl with a pH of 1.44 and a solution of HNO3 with a pH of 2.74. (Assume the volumes are additive)
If possible just a brief explanation how you got the answer?
In the decay series that starts with uranium-238, the first four steps consist of the emission of an alpha-particle, two beta-particles, and then another alpha-particle. What is the daughter isotope after the fourth emission
The half-life of a certain radioactive element is 1,250 years. What percent of the atoms remain after 7,500 years?
The kinetics of decomposition of dinitrogen pentaoxide is studied at 50 degrees C and at 75 degrees C. Which of the following statements concerning the studies is correct
The Zeeman effect is observed as a splitting in the spectral lines of hydrogen in the presence of a magnetic field. What is the greatest number of lines that a single spectral line can be split into by a magnetic field? a)2 b)3 c)4 d)5 e)6
What minimum frequency of light is required to ionize sodium. The energy required to ionize sodium is 496 kJ/mol. Answer needs to be in s-1.
Question- Enough of a monoprotic acid is dissolved in water to produce a 0.0180 M solution. The pH of the resulting solution is 6.02. 1) Calculate the Ka for the acid.
dissolved in 100.0 mL water and titrated with 0.500 M NaOH; it takes 45.1 mL to reach the equivalence point. What is the molecular mass (g/mol) of pyruvic acid?
Write balanced net ionic equation for the reactions that take place when the following reagents are mixed together in aqueous solution:
A compound is composed of only C and H. It contains 88.82% C by mass and has a molar mass of 54.09 g/mol. What is the correct molecular formula
It is possible to draw a valid Lewis structure that follows the octet rule for all of the following except one. Which one cannot be drawn without violating the octet rule.
A bottle of wine contains 14.5% ethanol by volume. The density of ethanol (C2H5OH) is 0.789 g/cm3. Calculate the concentration of ethanol in wine in terms of mass percent and molality.
Balance the following equations and write the corresponding ionic and net ionic equations (if appropriate). 1) Balance the equation
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