The pH of a solution can be determined with an instrument called a pH meter. The following data was collected with the
use of a pH meter. Study and analyze it carefully.

Solution 0.1 M HCI
0.01 M HCI
0.1 M Na2CO3
0.1 M NaOH
O.1M HC 2 H 3 O 2
0.01 M HC 2 H 3 O 2
0.1 M NaHCO 3

pH reading
0.1
1.1
10.3
13.0
2.8
3.6
8.2

Butadiene undergoes a reaction at a certain temperature in the gas phase as follows: 2c4h6(g) --> c8h12(g) the following data were collected for this reaction: time (min) [c4h6] (m) 0 0.36 15 0.30 30 0.25 48 0.19 75 0. determine the order of the reaction and the rate constant. 1st order and k = 4.3x10 -4 s-1 1st order and k = 2.3x10-4 s-1 2nd order and k = 4.3x10-4 s-1 2nd order and k = 2.3x10-4 s-1 zero and k = 4.3x10-4 s-1

Which element is the least metallic between cadmium, silver, zinc, or iron?

Achemist has dissolved a certain substance in water. the chemist knows that more of the substance could be dissolved into the water before it stops dissolving. therefore