2Fe(s)+3 Cl 2 (g) 2 FeCl 3 (s) Delta H^ =-800,0 kJ/mol Si(s)+2 Cl 2 (g) SiCl 4 (s) Delta H^ =-640.1 KJ/mol Determine the enthalpy ( in kJ/mol) for the reaction 3 SiCl 4 (s)+4 Fe(s) 4 FeCl 3 (s)+3 Si(s)

Calculate the molar mass of aluminum oxide (al2o3). express your answer to four significant figures.

Listen base your answer to the question on the information below. propane is a fuel that is sold in rigid, pressurized cylinders. most of the propane in a cylinder is liquid, with gas in the space above the liquid level. when propane is released from the cylinder, the propane leaves the cylinder as a gas. propane gas is used as a fuel by mixing it with oxygen in the air and igniting the mixture, as represented by the balanced equation below. c3h8(g) + 5o2(g) → 3co2(g) + 4h2o() + 2219.2 kja small amount of methanethiol, which has a distinct odor, is added to the propane to consumers detect a propane leak. in methanethiol, the odor is caused by the thiol functional group (–sh). methanethiol, ch3sh, has a structure that is very similar to the structure of methanol. what is the correct structural formula for a molecule of methanethiol

Acompound has a molar mass of 92.02 grams/mole, and its percent composition is 30.4% nitrogen (n) and 69.6% oxygen (o). what is its molecular formula? a. n2o4 b. no2 c. n2o d. n4o2