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The proton NMR spectrum of a compound gives a singlet at ? 2.10 and ? 2.56 in a ratio of 3:2, respectively. Which compound below is the best match for the spectrum?
It is well known that the element magnesium has three naturally occurring isotopes. Mg-24 represents 79.0% of all magnesium atoms, Mg-25 accounts for 10.0%, and Mg-26 is the remaining 11.0%. If you have 254. atoms of magnesium, how many should be ..
Ethyl acetate can be prepared from ethanol as the only organic starting material.
which of the following statements about writing molecular complete and net ionic equations is false a net ionic
what is the ph of a solution prepared by mixing 25 ml of 0.10 m methylamine with 25 ml of 0.10 m methylammonium
if 32ml of 7.0m h2so4 was spilled what is the minimum mass of nahco3 that must be added to the spill to neutralize the
Determine [Zn2+] [CN-] [HCN] in a saturated solution of Zn(CN)2 with a fixed pH of 2.390. The Ksp for Zn(CN)2 is 3.0x10^-16. The Ka for HCN is 6.2x10^-10.
how many grams of NaNO3 would you add to 250.0g of H2Oin order to prepare a solution that is 0.500 molal in NaNO3
the decomposition of potassium chlorate kclo3 is used as a source of oxygen in the laboratory. how much potassium
Calculate the solubility (in mol/L) of silver chloride in 2.0 M NH3 solution. How many grams of AgCl will dissolve in 500. mL of 2.0 M NH3?
A solution of 0.0385 M hypochlorous acid, HOCl, has a pH of 4.47. Calculate the acid dissociation constant Ka.
Excess chlorine gas and 18.5 grams of iron(III) chloride is produced, what is the percent yield of the iron(III) chloride?
the calcium oxide is added to seawater and a number of changes occur. first calcium oxide reacts with water to form
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