Cyclobutane decomposes to ethylene according to the equation

C4H8--->2C2H4

Determine the value of the rate constant for the reaction based on the following pressures, which were recorded when the reaction was carried out at 430 celsius in a constant volume vessel. In scientific notation

Time mmHg

0 400

2000 316

4000 248

6000 196

8000 155

10000 122

This is a characteristic of the elements in the periodic table that shows a pattern. it may increase or decrease across or down the table.

Each of the following reactions is allowed to come to equilibrium and then the volume is changed as indicated. predict the effect (shift right, shift left, or no effect) of the indicated volume change. drag the appropriate items to their respective bins.co(g) + h2o(g) < => co2(g) + h2(g) (volume is decreased) pcl3(g) + cl2(g) < => pcl5(g) (volume is increased) caco3(s)< => cao(s) + co2(g) (volume is increased)

Consider hydrogen in an excited state n = 5n=5 that emits photons to reach the ground state. there are various possible transitions other than straight to the ground state that can occur; for example, it can drop to the n = 3n=3 state followed by the n = 3n=3 to the ground state transition. which of the possible transitions will result in the emission of a photon in the visible region?