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Complete combustion of 6.00 g of a hydrocarbon produced 19.3 g of CO2 and 6.58 g of H2O. What is the empirical formula for the hydrocarbon?
Calculate the molality of the unknown compound (m). m=mol of solute X particles per formation / mass of solvent , kg Data given: Mass of test tube , flask, t-butyl alcohol and unknown
What mass of heptane, C7H16, is required to produce 90.2 kJ of heat at constant pressure from its combustion in excess oxygen
The half-cell is a chamber in the voltaic cell where one half-cell is the site of an oxidation reaction and the other half-cell is the site of a reduction reaction.
Question- Detailed calculations show that the value of Zeff for the outermost electrons in Si and Cl atoms is 4.29+ and 6.12+, respectively. 1) Predict Zeff for a valence electron in P, phosphorus, based on the calculations for Si and Cl.
Solid aluminum acetate is slowly added to 75.0 mL of a 0.0536 M sodium phosphate solution. The concentration of aluminum ion required to just initiate precipitation is
Which of the acids in question #3 would be the best choice to create a buffer with pH = 7.35? If you had 250.0 mL of a 0.20 M solution of the acid, what mass of the corresponding sodium salt of the conjugate base would be required to make the buff..
Enough of a monoprotic acid is dissolved in water to produce a 0.0170 M solution. The pH of the resulting solution is 6.34. Calculate the Ka for the acid.
What mass of water (in g) would need to evaporate from your skin in order to dissipate 0.8 x 10 5 J of heat from your body?
Compounds A and B are isomers of molecular formula C9H19Br. Both yield the same alkene C as the exclusive product of elimination on being treated with tert-butoxide in DMSO Hydrogenation of alkene
Calculate the number of moles of sodium carbonate present in a mixture of sodium bicarbonate, sodium carbonate and a neutral component if 6.0 ml of 0.100 M HCl were used to titrate 0.200 g of this mixture with phenolphthalein as the indicator.
An unknown carbonyl compound tested positive when mixed with chromic acid solution. It also showed positive results in the iodoform test. Draw the structure of this compund
If 0.80g of gas occupies 295 mL at 25 degrees celsius and 680 mm Hg of pressure, what is the molar mass of the gas?
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