In chemical research we often send newly synthesized compounds to commercial laboratories for analysis. these laboratories determine the weight percent of c and h by burning the compound and collecting the evolved co2 and h2o. they determine the molar mass by measuring the osmotic pressure of a solution of the compound. calculate the empirical and molecular formulas of a compound, cxhycr, given the following information: (a) the compound contains 73.94% c and 8.27% h; the remainder is chromium. (b) at 25 °c, the osmotic pressure of a solution containing 5.00 mg of the unknown dissolved in exactly 100 ml of chloroform solution is 3.17 mm hg

hope this

explanation:

covalent bonds

consist of pairs of electrons shared by two atoms, and bind the atoms to fixed orientation and requre high energies to break them

ionic bonds

when two atoms differ considerably in their electronegativity, then one of the atoms will lose its electron to the other atom. this results in a positively charged ion(cation) and a negatively charged ion (anion)

answer: mercury

explanation:

a 20-cm-long, cylindrical graphite (pure carbon) rod is inserted into an oxidizing atmosphere at 1145 k and 1.013 x 105 pa pressure. the oxidizing process is limited by the diffu- sion of oxygen counterflow to the carbon monoxide that is formed on the cylindrical surface.