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Compute the empirical formula of a 0.7221g sample of a compound containing the subsequent masses of elements Carbon 0.2290g, hydrogen 0.05489g, nitrogen 0.2318g, and oxygen 0.1328g
Explain what is the flow rate of the CaCO3 that would be required if CaO is produced by calcining CaCO3? If the efficiency of sulfur capture is 65%.
a sample that weighs 25.12 g contains 6.022 x 1023 particles. if 25.00 of the total number of particles are argon atoms
How many moles of NaCl2 can be formed in the reaction of 5.00 molof Ni and 10.0 mol of HCl
what would the change in temperature be in each change if 1 mole of an ideal gas is subjected to numerous changes in
A compound containing xenon and fluorine was prepared by shinning sunlight on a mixture of X2 (0.526 g) and excess F2 gas. If you isolate 0.678 g of the new compound, what is the empirical formula
Substance A has a greater molar mass then substance B. Both are nonelectrolytes. If 50 g of substance A are dissolved in 250 g of water in one beaker
If the initial concentration of AB is 0.210 M , and the reaction mixture initially contains no products, what are the concentrations of A and B after 70 s
How do you do the problem- The pKa for lactic acid, CH3CH(OH)COOH, is 3.86. At physiological pH (7.40), which is the predominant form
A SCE and an indicator electrode were connected to a voltmeter. All conditions were standard. The observed cell emf at 25 oC was 0.601 V. The potential of the indicator electrode is therefore
when answering include an explanation balanced chemical equations andor calculations where appropriate.a 0.481 gram
A close chemical relative of the banned insecticide DDT is methoxychlor (C16H15Cl3O2). Methoxychlor is currently used as a home insecticide. Calculate the mass percent of oxygen in methoxychlor.
A drop of concentrated hydrochloric acid (12M) falls into a pond containing 3x105L of pure H2O. Presuming the volume of a drop is .25mL explain what is the pH of the pond after the acid is added
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