Base your answers to questions 1 through 3 on the information below and on your
knowledge of chemistry.
Given the unbalanced equation showing the reactants and product of a reaction
occurring at 298 K and 100. kPa:
P4(s) + Cl2(g) → PC13(C) + energy
1. a. Show a numerical setup for calculating the percent composition by mass of chlorine in
PCl3(l) (gram-formula mass = 137 g/mol).

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

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

Compare the equilibrium constants for the systems shown in the table. which favors products the most? which favors products the least? rank these systems in order from most to least in terms of favoring products rather than reactants. d > b > a > c c > a > b > d b > c > d > a a > d > c > b