Which sample of HCl(aq) contains the greatest number of moles of solute particles?(1) 1.0 L of 2.0 M HCl(aq)
(2) 2.0 L of 2.0 M HCl(aq)
(3) 3.0 L of 0.50 M HCl(aq)
(4) 4.0 L of 0.50 M HCl(aq)
Answers
Answer:
2
Explanation:
Related Questions
What mass of anhydrous solute is needed to prepare 500 mL of 0.032 M NaF(aq)? Answer in units of g.
1)What is not true of a scientific law?A) It must be verified by scientists around the world. B) It attempts to explain why things happen. C) It describes what happens in the world around us. D) It must be supported by many independent scientific investigations. 2)Observation and experimentation have led many scientists to accept a theory about the origin of the universe. This theory is called the Big Bang Theory. Scientific evidence collected and observed by scientists around the world suggests that the universe is ever expanding from a hot and dense initial state. What makes this a scientific theory? A)It has been proven by several scientists independently, resulting in its being accepted as truth. B)It is based on the beliefs and opinions of the majority of the scientific community. C)It is an observation of the natural world that has been proven as fact. D)It is the best explanation that scientists can offer, based on many scientific investigations. 3)A scientist in Italy published his findings from a scientific investigation that he conducted. Other scientists from around the world conducted similar investigations to test the results. All of the investigations result in similar findings. What does this say about the findings of these investigations? A)They have been proven to be scientific fact because all the investigations gave similar findings. B)The findings are automatically promoted to a law because they were proven by so many scientists. C)They are ready to be published in the media and in text books as a new scientific theory. D)The results are considered more reliable because they were documented by separate investigations. 4)Which of the following is not an example of kinetic energy? A)mechanical energy B)nuclear energy C)electrical energy D)thermal energy
What color is potassium iodide and lead nitrate ? (is) because it is mixed and it is all one as a compound or a chemical formula or equation .
The balanced chemical equation for the reaction of copper (Cu) and silver nitrate (AgNO3) is shown below. Cu + 2AgNO3 mc001-1.jpg 2Ag + Cu(NO3)2 How many moles of copper must react to form 3.50 mol of Ag?
Answers
2.0 moles are represented by 118g of cobalt.
What are moles?
A mole is defined as 6.02214076 ×of some chemical unit, be it atoms, molecules, ions, or others. The mole is a convenient unit to use because of the great number of atoms, molecules, or others in any substance.
Moles = 2.0023757 = 2.0moles
Hence, 2.0 moles are represented by 118g of cobalt.
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n=118/58.93=2
Answer: 2 moles
Answers
You are to convert 3.55 moles of NaCl to formula units. Always remember that the Avogadro’s number is 6.023*10^23 units per mole of a substance. Units could be atoms, molecules or formula units. So, just multiply 3.55 moles to 6.023*10^23 formula units per mole and you will get 2.138x10^24 formula units of NaCl.
Answers
Answer:
maybe i can help for you where the question
Answers
The pH of a 0.020 M aqueous solution of propionic acid is 1.70.
What is aqueous solution?
Aqueous solution is defined as a chemical mixture in which water serves as the solvent. Aqueous solutions are made up of water and one or more dissolved materials. Solids, gases, or other liquids can all dissolve in an aqueous solution. A mixture needs to be stable in order to be considered a true solution.
pH is defined as a scale that is used to describe an aqueous solution's acidity or basicity. A high pH in the body can happen for a number of reasons, such as faulty kidney/liver function, digestive issues, drug side effects, and lung issues. When the body's levels of carbon dioxide, an acid, are too low, respiratory alkalosis occurs.
pH = -log[H+]
pH = -log [ aqueous solution ]
pH = - log [ 0.020 ]
pH = 1.70
Thus, the pH of a 0.020 M aqueous solution of propionic acid is 1.70.
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(2) more effective particle collisions occur
(3) the required activation energy increases
(4) the concentration of the reactants increases
Answers
Justification:
Always keep in mind that the temperature is a measure of the average kinetic energy of the particles.
The higher the temperarute the hiigher the kinetic energy.
Also, remeber that the kinetic energy is the energy of motion: the higher the kinetic energy the hgher the speed of the particles and the more energetic the collisions.
Therefore, those more energetic collisions will increase the number of collisions that overcome the activiation energy leading to higher rate of conversion (reaction), whic is what a more effective particle collisions occur mean.
Answers
Answer:
2
Explanation:
Pure water is not a mixture....it is only water
gold ...is only gold
2. air IS a mixture of various gases.....nitrogen , oxygen, co2 etc
Final answer:
Option 2: The air in your room. The air in your room is an example of a mixture because it consists of various gases that can be separated from each other.
Explanation:
The correct answer is Option 2: The air in your room.
A mixture is a combination of two or more substances that are not chemically bonded together. The air in your room is a mixture because it consists of various gases such as oxygen, nitrogen, carbon dioxide, and others. Each gas retains its individual properties and can be separated from the others.
On the other hand, pure water is a compound because it consists of two hydrogen atoms bonded to an oxygen atom, while gold is an element because it is composed of only gold atoms.
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