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State the mass and charge balance equations for a solution that is 0.15 M in NaF as well as saturated with CaF2.
If 5.20mL of 0.1000 M NaOH solution is needed to just neutralize excess acid after 20.00 mL of 0.1000 M HCl was added to 1.00 g of an antacid, how many moles of acid can the antacid counteract per gram?
4HCl + MnO2 = MnCl2 + 2H2O + Cl2 When 1.22 mol of HCl reacts with excess MnO2, how many moles of Cl2 form?
Copper has two naturally occurring isotopes,63Cu (isotopic mass 62.9396 amu) and 65Cu (isotopic mass 64.9278 amu). If copper has an atomic mass of 63.546 amu, what is the percent abundance of each isotope
a solution is initially 0.050m in acetate ch3coo- kb 5.6 x 10-10. 10.0ml of 0.10 m hcl is added.a write the chemical
Small helium-neon lasers emit 3.50 mJ/s of light at 634 nm. How many photons does such a laser emit in one minute?
What is the wavelength of light whose energy is 1000.4 J?
Calculate the pH for the following cases in the titration of 25.0mL of 0.2M cyanic acid (HCNO, pKa=3.66) with 0.2M RbOH solution
hydroquinone is an antioxidant that is also used as a photographic reducer and developer. the normal boiling point of
When limestone (calcium carbonate) is heated it decomposes to form lime (calcium oxide) and carbon dioxide. A. write a balanced chemical equation for this reaction
Calculate the partial pressure of carbon dioxide in the associated soil atmosphere.
Dehydrohalogenation Prepare styrene (C6H5CH=CH2) by dehydrohalogenation of either 1-bromo-2-phenylethane or 1-bromo-1phenylethane using KOH in ethanol.
Which of the following compounds would have the lowest boiling point. a) CH4 b) HF C)K2O D) NO2 E) LiCl
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