CHEMISTRY HIGH SCHOOL

The pH of a solution can be calculated using which formula?

Answers

Answer 1
Answer:

Answer:The pH is the negative log of H+

Explanation:a p e x

Answer 2
Answer:

There are quite a few relationships between [H+] and [OH−] ions. And because there is a large range of number between 10 to 10-15 M, the pH is used. pH = -log[H+] and pOH = -log[OH−]. In aqueous solutions, [H+ ][OH- ] = 10-14. From here we can derive the values of each concentration.

 

 -log[H+ ] + -log[OH- ] = -log[10-14]

pH + pOH = 14

So pH = 14 – pOH and pOH = 14 – pH 

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Which of the following regulates food labels? HACCP FSIS FDA EPA

Answers

Answer:

FDA

Explanation:

Answer:

FDA

Explanation: it right ;)

Which of the following can effect the resistance of a wire?I. the length of a wire
II. the thickness of a wire
III. the temperature of a wire
I and II
I and III
II and III
I, II, and III

Answers

Answer:

l and lll

Explanation:

The longer the wire, the more resistance that there will be and heating a metal conductor makes it more difficult for electricity to flow through it.

Which electron configuration represents the electrons in an atom of Ga in an excited state?

Answers

The ground state is the lowest energy state of an atom while the excited state is any state that is higher than the ground state. Since the ground state configuration of Ga is 2-8-18-3 then the electron configuration of Ga in an excited state is represented by 2-8-17-4. In order to achieve the excited state an electron has to be promoted.

Final answer:

An excited state electron configuration of Gallium (Ga) might be [Ar] 4s2 3d9 4p2, as this configuration represents an electron having absorbed energy and moved from the 3d to the 4p level.

Explanation:

The electron configuration of an atom in its ground state is the arrangement of electrons in the lowest possible energy levels (the 'normal' arrangement). For the element Gallium (Ga), the ground state electron configuration is [Ar] 4s2 3d10 4p1. However, when an atom is in an excited state, one or more electrons have absorbed energy and moved to a higher energy level. An electron configuration for an excited state of Gallium might look like [Ar] 4s2 3d9 4p2 as an electron from the 3d level has absorbed energy and moved to the higher 4p level.

Learn more about Excited State Electron Configuration here:

brainly.com/question/32047683

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Although it seemed quite important in 1788, Amendment _______, barring the quartering of soldiers in private homes, is outdated today

Answers

From what I've read its 1788 Amendment IV
It's Amendment number 3 because Amendment 4 is you have to have warrant to be able to search someones house ect.

What characteristic is important for plants found in saltwater wetlands?

Answers

Answer : Salinity tolerance

Explanation :

The important characteristics for the plants which are found in salt water wet lands is salinity tolerance.

Salinity tolerance is the salt tolerance of crops in the wet lands which gives maximum salt level that a crop can tolerate without losing its productivity.

Although it may get affected negatively at higher levels of exposure. The salt level is often measured as the soil salinity or else the salinity of the irrigated water.

Which of the following is a chemical property of vinegar? A. The pH of vinegar is around 2.4. B. Vinegar freezes at around 2°C. C. Vinegar boils at about 100°C. D. The color of vinegar ranges from colorless to brown. E. Vinegar is a transparent liquid.

Answers

I think the correct answer from the choices listed above is option A. The chemical property of a vinegar is that the pH of vinegar is around 2.4. It tells something about the concentration of hydrogen ions in the solution. The other choices given only describe the physical properties of the substance.

Answer:

a

Explanation:

trust me bro
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