Determine the pH of a 1x10^-4 M solution of HCl.

Answers

Answer 1
Answer: The HCl is a strong acid, that is, it is fully consumed in the reaction.

HCl(aq) ------------> H
₃O⁺(aq)   + Cl⁻(aq)
 ↓                                   ↓                    ↓
 1x10⁻⁴ M                      0                    0
-1 x 10⁻⁴                  + 1 x 10⁻⁴      +1 x 10⁻⁴
_____________________________________
0                                 + 1 x 10⁻⁴  M       + 1 x 10⁻⁴  M

PH = - log [ H
₃O⁺ ]

PH = - log [ 1 x 10⁻⁴]

PH =  4.0

hope this helps!

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The sun's core is where Hydrogen atoms produce energy as they convert to molecules of Helium. Helium that is produced by the conversion of hydrogen into energy is related to the solar core in the sense that the conversion process produces energy captured in the core. I hope this helps you. 

Answer : The phenomenon called as Nuclear Fusion is observed in the sun's core or solar core, where 4 atoms of Hydrogen molecule combines to give two atoms of Helium. It is due to fusing of two Hydrogen atoms to form one Helium molecule. In the core of sun this fusion process occurs, changing of mass of Hydrogen atom into Helium releases lot of energy in the form of heat and light.


The reaction that occurs inside the solar core is given below;


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radio waves
microwaves
infrared
ultraviolet
X-rays
gamma-rays

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A. Chlorine
B. Sulfur
C. Oxygen
D. None of the above

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Answer:

D. None of the above

Explanation:

All the answer choices listed only have 2-3 items in the electron configuration.

A solution that is a 4 on pH scale is a

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a pH scale runs from 1 to 14 with 7 being neutral.

1-6 has base like properties
8-14 has avid line properties

since this solution has a pH scale of 4.... the solution is basic
A solution that is 4 on pH scale is an acid. A pH scale is used to measure whether a solution is an acid or a base. the pH scale is numbered between 0 to 14. 7 is the neutral point of this scale. Any solution having a pH of 7 is a neutral solution. Acidity of a solution increases as the reading in the scale decreases from seven towards zero. The basic nature of the solution increases as the pH level of the solution increases from 7 towards 14. The acidic nature of a solution having pH value of 3 is ten times more acidic than a solution having pH value of 4. The same thing is same while comparing basic solutions as well.

The digestion process starts in the _____. esophagus stomach small intestine mouth

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this is probably a little late lol but the answer is the mouth, because when you chew food, it releases nutrients into your body.

Green plants use light from the sun to drive photosynthesis, a chemical reaction in which liquid water and carbon dioxide gas form aqueous glucose and oxygen gas. Calculate the molecules of water needed to produce ___ of oxygen. Be sure your answer has a unit symbol, if necessary, and round it to the correct number of significant digits.

Answers

Photosynthesis is the process in which green plants and some other organisms that makes use of the energy from the sun, converts carbon dioxide and water into glucose (a sugar) and oxygen.

Equation

6 CO2 + 6 H2O → C6H12O6 + 6 O2

The number of moles of oxygen that can be obtained from 25g of water is

= 25g/ 6( (2*1)+(16) )= 25/108

= 0.23mol

Therefore 0.23moles of water yields 0.23 moles of oxygen