Order the steps of the experiment below according to the scientific method. Question 7 options:
Paul thought that the higher the temperature of water the faster it dissolved materials.
Paul tried dissolving several different substances in both cold and hot water, timing how long it took to dissolve each substance.
Paul calculated the average time to dissolve each substance in each temperature.
Paul decided to redo his experiment at several different temperatures.
Paul noticed that sugar dissolved almost instantly when added to hot tea.
Paul compared the graphs of cold water dissolving substances to the graphs of hot water dissolving substance.
Paul reported that for all substances the hot water dissolved it faster.

14 days is the half-life of phosphorus-32

explanation:

let the different atoms be x and y. each with four protons and same mass will be represented as follows.

mass number is number of protons + number of neutrons.

            and  

since, it is given that one has a negative charge while the other is neutral. therefore, there will be increase in number of protons and the atom will be represented as follows.

according to periodic table, mass number of beryllium is 9 and it has atomic number 4 so, the atoms will be and .  

the protons and neutrons will be located inside the nucleus whereas the electrons will be revolving around the nucleus.  

thats how its supposed to be

consider the reaction below.

 no rx

at 500 k, the reaction is at equilibrium with the following concentrations.

[pci5]= 0.0095 m

[pci3] = 0.020

[ci2] = 0.020 m

what is the equilibrium constant for the given reaction?

0.042

0.42

2.4

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