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A flask in a sealed room that is devoid of oxygen contains 16.05 g of magnesium silicide. An acid HA, where A is a halogen, is added, and a double-replacement reaction occurs. One of the products is a solid, but the other is a gas that escapes from the flask. The mass of the contents of the flask is measured to be 39.85 g. Assuming that the reaction went to completion (that is, neither reactant occurred in excess),
(a) determine the name of the acid.
(b) mathematically prove which product was the gas.
Nitrogen monoxide reacts with hydrogen gas to form nitrogen gas and water (vapor). Write a balanced equation for this reaction. The reaction is experimentally found to be first order in H2 and second-order in NO.
Write a balance chemical reaction showing that Ru2+ disproportionates in aqueous acid. calculate standard potential and the Gibbs Free Energy for the reaction.
The other plate was placed in a chamber containing hexane, and after developed it showed two spots, one with an Rf value of 0.54 and one with an Rf value of 0.37. Explain how this occurred
The value of K_c or K_p for a stated chemical equation is equal to a constant at a given temperature. Also, and most importantly, if you want to make $25, add me on skype (kasparov586)
A 2.00 l flask is filled with .600 mol of n2 g abd 1.500 mol of h2. at eq at 400 c the flask contains .050 mol of nh3. What is the composition of the eq mixture for the following. N2 +3 h2 » 2 nh3 h= -1628 kj
The molar mass of an oxygenated hydrocarbon substance is 88.0 g / mole.Its composition is as follows:O:36.4%,H :9.0%,C:54.6%. Calculate the empirical formula and molecular formula.(use atomic mass C=12.0,H=1.0,O=16.0)
It takes 51.0j to raise the temperature of an 11.4g piece of unknown metal from 13.0c to 25.0c. What is the specific heat for the metal
If 10.0 mL of blood plasma has a mass of 10.279 g and contains 0.870 g of protein, what is the mass/mass percent concentration of the sample
Problem- Calculate the amount in mL of methanol needed to give 12mmol, as well as propanoic acid (6mmol) needed to give 12mmol
two pages due, for which each page includes a drawing of a molecule which pertains to your topic in some way. Identify what type of molecule it is. If pertinent, identify functional groups or make other comments about structure and properties based ..
The boiling point of methanol is 72.2o C. The molar boiling point elevation constant for methanol is 2.7o C/m. Explain what is the boiling point (in oC) of a solution prepared by dissolving 50g of acidic acid C2H4O2 in 100g of methanol. (Tbo =94.7..
Write the Lewis-dot structure for the following species. If resonance occurs, draw all resonance forms. Give the formal charge and oxidation number of each atom in each species.
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