CHEMISTRY HIGH SCHOOL

Which describes the relationship between [H+] and [OH−] ?

Answers

Answer 1
Answer: There are quite a fewrelationships between [H+] and [OH−]ions. And because there is a large range of number between 10 to 10-15M, 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 

A neutral solution occurs when pH= pOH = 7. It is an acid solution when [H+ ] > [OH- ],  pH < 7 and basic when [H+ ] < [OH- ], pH> 7.
Answer 2
Answer: H+ is for an acid, which has a pH of 1-7. OH- is for a base, called hydroxide, and has a pH of 7-14. 

pH 7 is neutral. 

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Please answer. Brainliest!

Answers

Answer:

The equation is balanced.

Explanation:

The number of P atoms in the reactant side is 4 and the number of P atoms in the product side is also 4.

The number of O atoms in the reactant side is 16 and the number of O atoms in the product side is also 16.

The number of H atoms in the reactant side is 12 and the number of H atoms in the product side is also 12.

These results are in accordance with the law of conservation of mass.

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Plz help me i need to know how to do this!!!

Answers

Equivalent conversions:

1 atm = 760 mm Hg = 101.325 kPa

 

Dalton’s law is presented inthis formula, P = p1 + p2 + … +pn where p1, p2 to pn are the pressures of theindividual gases and the P is the total pressure.

 

Let p1 = CO2, p2 = O2 and p3 =N2

p1 = 125mmHg (1 atm/760 mmHg) =0.1645 atm

p2 = 22 kPa (1 atm/101.325 mmHg)= 0.2171 atm

 

P = p1 + p2 + p3

1.5atm = 0.1645 atm + 0.2171 atm+ p3

p3 = N2 = 1.1184 atm 

Why does the flow of science just keep going

Answers

Answer:

The Flow of science keeps going because not everything is fully discovered yet. New things are discovered everyday and are also made better as well.

Explanation:

A newly discovered element, Z, has two naturally occurring isotopes. 90.3 percent of the sample is an isotope with a mass of 267.8 u, and 9.7 percent of the sample is an isotope with a mass of 270.9 u. What is the weighted average atomic mass for this element?

Answers

atomic mass=percentage of isotope a * mass of  isotope a + percentage of isotope b * mass of  isotope b+...+percentage of isotope n * mass of isotope n.

Data:
mass of isotope₁=267.8 u
percentage of isotope₁=90.3%

mass of isotope₂=270.9 u
percentage of isotope₂=9.7%

Therefore:

atomic mass=(0.903)(267.8 u)+(0.097)(270.9 u)=
=241.8234 u + 26.2773 u≈268.1 u

Answer: the mass atomic of this element would be 268.1 u

A plant fertilizer contains 13 % by mass nitrogen ( n ). in a container of soluble plant food, there are 10.0 oz of fertilizer. how many grams of nitrogen are in the container?

Answers

There are 36.955 grams of nitrogen in the container.

Earth's first semi-permanent atmosphere consisted of abundant water vapor, carbon dioxide, nitrogen, ammonia, and traces of methane. these gases came from

Answers

organic compounds from the Cambrian era
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