Answer:
A. In Bohr's model, the atom's mass is found at its center instead of distributed throughout.
Explanation:
The Plum-Pudding model of an atom was proposed by the late J.J Thompson. In this model, an atom is seen as negative charged particles that are surrounded by a soup of positive charge, which was liken to Plum Pudding, an English dessert.
While in Bohr's model of an atom; negatively charged electrons move in clearly defined circular orbits around the atom's mass (positively charged), called Nucleus.
The Bohr's model has been consisted of the central atom's mass. Thus option A is correct.
Atom has been smallest particle of matter has been consisted of electrons, protons, and neutrons as the subatomic particle. The structure of atom has been postulated with different theories and model.
Thomson's Plum Pudding Model has been the first model for elucidating the structure of the atom.
According to Thomson, the atom has been consisted of central positive nucleus with electrons present outside the nucleus in the distributed model. The structure has been similar to English dessert Plum and has been named as Plum pudding model.
The Bohr's atomic model has been the most accepted with the nucleus has been a small entity in the atom. The electrons have been supposed to be present in the atomic orbitals, and revolves around the nucleus. The model resembles solar system.
The Bohr's model has been different from the Plum pudding model as in Bohr's model, atoms have been consisted within the orbitals consisting of negative charged electrons and are revolving around the positive nucleus.
The atomic mass of the atom has been consisted in the central nucleus. Thus, option D is correct.
For more information about the atomic model, refer to the link:
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What is Ky for H2BO3(aq) = H+(aq) + H2B03 (ag)?
А. К. :
[H,BO, 1
[H+ ][H,80,)
В. К.
[H+ ][H,BO,
[H,B03]
C. Ka = [H2B03][H+][H2B031
D. Ka = [H+][H2B031
Answer:
The answer is option c.
Hope this helps.
In 1990, the northern spotted owl was listed as endangered. Because of this, millions of acres of forests in the Pacific
Northwest became protected habitat. This stopped the timber industry from being able to cut down trees there. Which
of these was MOST LIKELY responsible for this?
A)
Clean Air Act
Eliminate
B)
Species Survival Plan
C)
Endangered Species Act
D)
Resources Conservation and Recovery Act
Answer:
the endangered spices act
Explanation: The US Endangered Species Act (ESA) is our nation's most effective law to protect at-risk species from extinction, with a stellar success rate: 99% of species listed on it have avoided extinction.
Answer:
C
Explanation:
Hi All,
What are good Science Questions for:
- Chemical Reactions
- Space
- Ecology
Please help.
Answer:Combination.
Decomposition.
Single displacement.
Double displacement.
Combustion.
Redox.
Explanation:
Which of the following processes requires more heat energy?
a. raising the temperature of 100.g of water by 10.0 °C
b. raising the temperature of 50. g of water by 10.0 °C?
To build a boat in which material strength is the greatest concern, the best material to use would be?
A) PVC
B) aluminum
C) copper
D) There is not a clear choice.
Thank you
During which time interval does the substance exist as both a liquid and a solid
The time interval in which a substance exists as both liquid and solid is called ; Triple point
A triple point is a time interval in a substance when the pressure and temperature of the substance causes the substance to exist in more than one phase at a time. Substances that exhibit this characteristic are called non-Newtonian fluids.
A good example of a substance that exist in both liquid and solid form within this time interval is Potassium.
Hence we can conclude that the time interval in which a substance exists as both liquid and solid is called triple point.
Learn more : https://brainly.com/question/23919909
Although your question has some missing data a general answer within the scope of your answer is provided above
what was Rudolf Virchow trying to prove through his work
Answer:
Rudolf Virchow was trying to prove through his work that spontaneous generation didn't happen.
Explanation:
Rudolf Virchow was trying to prove through his work that spontaneous generation didn't happen.
A person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m. What is the efficiency rating of the jack? HINT: Use work formula first to solve for WORKout and again for WORKin...then use efficiency formula.
Answer:
The efficiency rating of the jack is 0.067.
Explanation:
We have, a person applies a force of 200 N over 1.5 m to a jack. The jack exerts a 1000-N force on a car a distance of 0.02 m.
It is required to find the the efficiency rating of the jack. It is equal to the ratio of output work to the ratio of input work. So,
[tex]\eta=\dfrac{1000\times 0.02}{200\times 1.5}\\\\\eta=0.067[/tex]
Thus, the efficiency rating of the jack is 0.067.
How is Earth unique?
Answer:
All of the above
Explanation:
Answer:
All of the above
Explanation:
Earth is the only planet in our solar system that has a large amount of liquid water. About 74% of the surface of Earth is covered by liquid or frozen water. Because of this, people sometimes call it the blue planet. Because of its water, Earth is home to millions of species of plants and animals
Thank me later
Hope this helps!!!
At STP, the element oxygen can exist as either O2 or O3 gas molecules. These two forms of the element have (1) the same chemical and physical properties (2) the same chemical properties and different physical properties (3) different chemical properties and the same physical properties (4) different chemical and physical properties
Answer:
O2 and O3 are allotropes of Oxygen, therefore they have (4) different chemical and physical properties.
Explanation:
Which element has a lower first ionization energy than aluminum (AI)?
The Periodic Table
A. Sodium (Na)
B. Neon (Ne)
C. Sulfur (S)
D. Boron (B)
Answer:sodium(a)
Explanation:
Give examples of other amino acids that serve as precursor and state for what?
Explanation:
Congenital erythropoietic porphyria, for example, prematurely ... Uroporphyrin I, coproporphyrin I, and other symmetric .
What is the 10th element of the periodic table?
Answer:
Neon
Explanation:
Answer:
Neon
Explanation:
Open this periodic table and you can see the names and numbers of every element
Hope it helps! :)
Marek is trying to push a box of sports equipment across the floor. The arrow on the box is vector representing the force that marek exerts. What are the forces acting up one the box?
Answer quick
Answer:
Gravity force (friction towards Marek ).
Explanation:
According to the situation, Marek try to push the box which contains some mass because of sports equipment
Marek tries to push the box, but gravity tries to the down box on the floor.
So, box and floor create friction towards Marek
.
Answer:
Gravity force
Explanation:
the reaction below shows a system in equilibrium how would an increase in the concentration of chemicals affect this reaction?
Answer:
Option B. The equilibrium of the reaction would shift to the right.
Explanation:
According to Le Chatelier's principle, when an external constrain such as change in concentration, temperature or pressure is imposed on a chemical system in equilibrium, the equilibrium position will shift in order to neutralize the effect.
Now, let us answer the question above.
From the question given above, the equation is:
A + B <===> C + D
Increasing the concentration of A will shift the equilibrium position to the right.
This is true because increasing the concentration of A means having more reactants in the system. So the reactants react to produce more product thereby shifting the equilibrium position to the right.
oswald avery helped build our understanding of genetics by showing that
Which would slow down a reaction that is occurring in a solution at 25 degrees Celcius?
Question 11 options:
increase the air pressure above the solution
add a catalyst
put the solution over ice
add 10mL of water at 30 degree Celcius
Answer:
put the solution over ice.
What are two ways drugs can increase the concentration of neurotransmitters in a synapse?
Answer:
naturally, through diet or exercise or drugs, specifically receptor antagonists
Explanation:
diet/exercise - diet is self explanatory, since a healthy diet would mean that your body would be balanced, and wouldn't struggle with producing NTs
drugs - any type of drug will mimic the behavior of NTs, but receptor antagonists specifically will increase the concentration of neurotransmitters in a synapse. Antagonists would block the receptors, and thus the NTs that were intended for the blocked space, will not have anywhere to go. As a result, the NTs will stay in the synapse, and cause an increase in the concentration of NTs.
ps: you'd have more luck asking this question in biology
Which statement about the mass of subatomic
particles is false?
a)A proton has a mass of 1 amu.
b)A neutron has slightly more mass
than a proton.
C)An electron has slightly less mass
than a proton.
d)none of the above
Answer:
C
Explanation:
Both proton and neutron have a mass of 1 atomic unit. ( proton positive but neutron no charge) .
even though they both has a mass of 1 amu , they slightly differ in mass. neutron has slightly greater mass than proton .
but electrons are very smaller than protons and neutrons. electron has 1/1840 mass of proton. so they are very smaller than protons.
answer is C
What is the molality of a solution containing 5 moles of a solute and 13 kg of a solvent?
Answer:
Morality of a solution = 0.38461
Explanation:
Given:
Amount moles in solution = 5 moles of solute
Amount of solvent = 13 kg
Find:
Morality of a solution.
Computation:
⇒ Morality of a solution = Amount of mole solute / Amount of solvent
⇒ Morality of a solution = 5 / 13
⇒ Morality of a solution = 0.38461
⇒ Morality of a solution = 0.385 (Approx)
Ni + F2 --> NiF2, Identify what's being oxidized, what's being reduced, the oxidizing agent, and the reducing agent.
Plz help ill give brainiest.
Answer:
hope this is correct
The oxidizing agent is F and The reducing agent is Ni.
What is meant by Oxidizing agent?An oxidizing agent also known as an oxidant, oxidizer, electron recipient, or electron acceptor is a substance in a redox chemical reaction that gains or "accepts"/"receives" an electron from a reducing agent called the reductant, reducer, or electron donor.
What is meant by Reducing agent?In chemistry, a reducing agent also known as a reductant, reducer, or electron donor is a chemical species that "donates" an electron to an electron recipient called the oxidizing agent, oxidant, oxidizer, or electron acceptor.
The oxidizing agent is F and The reducing agent is Ni.
To learn more about Oxidizing agent and Reducing agent refer:https://brainly.com/question/3123245
#SPJ2
What is the volume of a 4.0M solution that contains 374 grams of KNO3?'
Answer:
0.93L
Explanation:
We'll begin by calculating the number of mole of present 374g of KNO3. This is illustrated below:
Mass of KNO3 = 374g
Molar mass of KNO3 = 39 + 14 + (16x3) = 101g/mol
Number of mole of KNO3 =..?
Mole = Mass /Molar Mass
Number of mole of KNO3 = 374/101 = 3.7 moles
Now, we can calculate the volume of the solution as follow:
Mole of KNO3 = 3.7 moles
Molarity = 4M
Volume =..?
Volume = mole /Molarity
Volume = 3.7/4
Volume = 0.93L
Therefore, the volume of the solution is 0.93L
Answer:
THE VOLUME OF A 4 M SOLUTION THAT CONTAINS 374 g OF KNO3 IS 0.93 L
Explanation:
Number of moles = concentraion * volume
Number of moles can also be written as:
number of moles = mass / molar mass
Calculate the molar mass of KNO3 where (K = 39, N = 14, 0=16)
molar mass of KNO3 = (39 + 14 + 16*3) = 101 g/mol
So therefore:
mass / molar mass = concentration * volume
where;
mass = 374 g
molar mass = 101 g/mol
concentration = 4 M
volume = unknown
Hence,
374 / 101 = 4 * V
V = 374 / 101 * 4
V = 374 / 404
V = 0.9257 dm3
The volume of a 4M solution that contains 364 g of KNO3 is approximately 0.93 L
What does X represent for this transmutation?
96/242Cm + X→ 98/245Cf + 01n
gamma
+10e
24He
−10e
Answer:
2 4He
Explanation:
Please see attachment for explanation.
Answer:2/2 he
Explanation:
What is observed when a solution of potassium iodide is added to silver nitrate solution ? a) No reaction takes place (b) White precipitate of silver iodide is formed (c) yellow precipitate of Agl is formed (d) Agl is soluble in water.
Answer:
c) yellow precipitate of Agl is formed
Explanation:
KI + AgNO3 = AgI (s)+ KNO3
c) yellow precipitate of Agl is formed
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Answer: c
Explanation:
their is less matter to insulate so the smaller the amount of water the easier the temperature can be changed
9. Which series shows levels of organization in order from the smallest to the largest
structure?
and Chemical
e
A cell, atom, molecule, organism
7s
B atom, molecule, cell, organism
and pH
C molecule, atom, cell, organism
D cell, molecule, atom, organism
Life
lasic Units of Life
Answer:
B. Atom, molecule, cell, organism
Explanation:
Atoms make up molecules. Molecules make up cells. Cells make up tissue. A number of tissues working together creates an organ. Multiple organs working together creates an organ system. Organ systems working together creates one happy, functioning organism. :)
How long will it take the Sun to go around the galaxy once? a. 200 million years c. 100 thousand years b. 10 years d. 5 billion years
When k-37 undergoes positron emission what is the resulting atom
Answer:
The resulting atom is argon
Explanation:
Positron emission is a type of radioactive decay known as beta plus decay. This reaction is characterized by an element having an increase in the number of neutrons and a decrease in the number of protons.
This affects the atomic number in which it is decreased by one while the mass number remains unchanged.
Urgent. Please help. I need the correct answer
Answer:
1. B - Both are monbasic.
B - Both are monbasic.2. B - fast but contains more water than acid
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals4. C. Zn(OH)2
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals4. C. Zn(OH)25. C - Neutralization
B - Both are monbasic.2. B - fast but contains more water than acid3. D - Acids made from oxides of non metals4. C. Zn(OH)25. C - Neutralization6. B - H3O+
Explanation:
According to reaserch,
According to reaserch,An neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products. In a neutralization reaction, there is a combination of H+ ions and OH– ions which form wa acid anhydride is an acid anhydride that is an organic compound.
According to reaserch,An neutralization reaction can be defined as a chemical reaction in which an acid and base quantitatively react together to form a salt and water as products. In a neutralization reaction, there is a combination of H+ ions and OH– ions which form wa acid anhydride is an acid anhydride that is an organic compound. An acid anhydride is a compound that has two acyl groups bonded to the same oxygen atom.
What are the Functional properties of boiled rice?
Please if you can write it in your words.
