Use the table of observed changes to answer the question Change
#
Reacts with another
substance?
yes
Temperature
change?
Gas, sound, or light
produced?
New substance
formed?
1
yes
yes
yes
2
no
yes
yes
no
3
yes
yes
yes
yes
no
no
no
no
Which changes shown in the table are physical changes?
(1 point)
0 1 and 2
1 and 4
2 and 3
2 and 4

Use the table to identify the phase and phase changes of the elements under the given conditions. write the name of the substance, phase, or phase change

Lab reagent, hypothesis test.a reference solution used as a lab reagent is purported to have a concentration of 5 mg/dl. six samples are taken from this solution and the following concentrations are recorded: (5.32, 4.88, 5.10, 4.73, 5.15, 4.75) mg/dl.these six measurements are assumed to be an srs of all possible measurements from solution.they are also assumed to have a standard deviation of 0.2, a normal distributin, and a mean concentration equal to the true concentration of the solution.carry out a significance test to determine whether these six measurements provide reliable evidence that the true concentration of the solution is actually not 5 mg/dl.

How are evaporation and sublimation similar? a both involve the formation of a gas. b both release energy to the surroundings. c both take place throughout a solid. d both take place at the surface of a liquid.