Recall all the models you described in task 1.(Bohr, Rutherford, Thomson, and Dalton) Think about the results each model would predict for Thomson’s experiment. Which atomic models does Thomson’s experimental evidence support? Explain why these models are compatible with the experimental results.
Thomson's experimental data does support the Rutherford model.
What is an atom?The atom consists of matter that may be split without releasing electrical charges.
It's also the smallest unit of matter with chemical element features. As a result, the atom is the fundamental unit of science.
Rutherford was the one who first published the nuclear model of the atom. According to his atomic model, an atom's volume is largely empty,
The center of the atom houses the nucleus, which is made up of protons and neutrons, and its electrons follow certain pathways as they orbit it.
When compared to Rutherford's discoveries, the study of certain other scientists, like Dalton, Neil Bohr, and JJ Thomson, is mostly consistent.
For instance, Dalton's atomic theory assumed that atoms interact to create compounds and are nearly the same size.
Rutherford's theory states that atoms have a finite amount of electrons that may be shared to form compounds.
Rutherford's discoveries, which gave rise to the concept of shells, are also consistent with the Bohr model, which holds that electrons orbit the nucleus in certain shells.
Despite the fact that Rutherford's model was the best atomic model, it nevertheless drew from a number of prior studies and was compatible with their findings.
Hence Thomson's experimental data does support the Rutherford model.
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what does ivf stand for and sexual intercom
Answer:IVF
Explanation:
How many moles of na2so4 are present in 284.078 grams of na2so4?
a. 2
b. 3
c. 5
d. 6
this question in the screenshot
Mass of hydrate + crucible = 47.29 g
Mass of anhydrous salt = 2.7 g
Molar mass of anhydrous salt CuSO4 = 159.5 g
Given,
mass of empty crucible = 42.45 g
mass of hydrate salt= 4.84 g
mass of crucible after first heating = 46.1 g
mass of crucible after second heating= 45.153 g
mass of crucible after third heating= 45.15 g
so, as per the question we need to find...
Mass of hydrate + crucible = ? g
Mass of anhydrous salt = ? g
Molar mass of anhydrous salt CuSO4 = ? g
∴Mass of hydrate + crucible = 42.45 + 4.48 = 47.29 g
The given salt is in hydrate form, to remove water from this molecule we need to perform heating .
So we are taking the substance into the crucible as it is in less quantity.
Here, we performed heating 3 times and note the weight after every heating.
After this, assume that the water is totally evaporated and the remaining salt is in anhydrous form,
∴ Mass of anhydrous salt = 45.15 - 42.45 = 2.7 g
To find the molar mass of anhydrous salt of CuSO4,
atomic weight of Cu = 63.5 g
atomic weight of S = 32 g
atomic weight of O =16 g
∴ molar mass of anhydrous salt of CuSO4 = 63.5 + 32 + (16 ×3)
=159.5 gm
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How many moles of plutonium
are present in a sample
containing 8.4 x 1022 atoms of Pt?
?] moles Pt
0.139 moles of plutonium are present in a sample containing 8.4 x 10²² atoms of Pt.
How to calculate number of moles?The number of moles of a substance can be calculated using the following expression:
no of moles = no of molecules ÷ 6.02 × 10²³
According to this question, 8.4 × 10²² atoms of plutonium are present in the molecule of plutonium.
no of moles = 8.4 × 10²² = 6.02 × 10²³
no of moles = 1.39 × 10-¹
no of moles = 0.139moles
Therefore, 0.139 moles of plutonium are present in a sample containing 8.4 x 10²² atoms of Pt.
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When a magnet spins within a coil of wires, what is produced?
A. blue sparks
B. glowing light
C. nuclear energy
D. an electric current
and
In an electric generator, ___ will increase the output of electricity.
A. decreasing the turns of wire
B. increasing the turns of wire
C. decreasing the size of the magnet
D. decreasing the speed if the spinning magnet
lastly
Electric field defined as force per charge. It is measured in units of newtons divided by _____.
A. watts
B. coulombs
C. mass
D. grams
thanks :)
There are 4.9875 mol C, 7.9802 mol H,
and 2.00 mol O in the sample.
Divide each by the smallest number of
moles. What is the ratio for the H?
did anyone able to look up this question
the ratio for the H is 3.9901
blocks on the periodic table will not list a(n):
Blocks on the periodic table will not list a mass number of elements in this scenario.
What is Periodic table?This table comprises of elements in order of their atomic number which determines their chemical properties.
It contains the atomic number but however doesn't contain the mass number of the elements.
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Fatty acids are a component of:
According to the research, fatty acids, which are long molecules in the form of a hydrocarbon chain, are a component of lipids.
What are lipids?They are hydrophobic and water-insoluble molecules that are formed from the esterification of alcohols with fatty acids.
Lipids are a vital part of the diet of living beings since many vitamins are assimilated in the presence of certain lipids and many fatty acids are essential for animal metabolism.
Therefore, we can conclude that according to the research, fatty acids, which are long molecules in the form of a hydrocarbon chain, are a component of lipids.
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Which of the following is the best definition of nuclear fusion?
A. Nuclear fusion is the release of high-energy photons from a
nucleus.
B. Nuclear fusion is the joining of two or more nuclei into one
nucleus.
C. Nuclear fusion is the formation of new isotopes through a gain of
electrons.
D. Nuclear fusion is the splitting of a nucleus into two or more nuclei.
Answer:
B. Nuclear fusion is the joining of two or more nuclei into one nucleus.
The best definition of nuclear fusion : Nuclear fusion is the joining of two or more nuclei into one nucleus.
What is Nuclear reaction ?Nuclear reaction, change in the identity or characteristics of an atomic nucleus, induced by bombarding it with an energetic particle.
The bombarding particle may be an alpha particle, a gamma-ray photon, a neutron, a proton, or a heavy ion.
Nuclear Fusion reactions power the Sun and other stars.
In a fusion reaction, two light nuclei merge to form a single heavier nucleus.
The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei. The leftover mass becomes energy.
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HELP FAST!!!!!!!
Which two groups have the same functional group?
O A. Amines and alcohols
B. Aldehydes and esters
C. Ketones and aldehydes
D. Esters and ethers
Answer:
ketones and aldehydes
Explanation:
just took it!
PLEASE HELP FAST! What is the percent yield if 0.856 g of NO is actually obtained in the lab during the following reaction: 4NH3 + 5O2 --> 4NO + 6H2O . 6.3 g of Ammonia was reacted with 1.8 g of Oxygen?
Options:
A. 20.1%
B. 53.5%
C. 89.4%
D. 63.4%
The percent yield of the reaction is 63.4%; option D
What is percent yield?Percent yield of a reaction is given as:
Percent yield = actual yield/expected yield * 100 %Actual yield of the reaction = 0.856 g
Expected yield = 1.8/32 * 4/5 * 30 = 1.35 g
Percent yield = 0.856/1.35 * 100 % = 63.4 %
Therefore, the percent yield is 63.4%.
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An electron on an energy level has an energy of 16.32 x 10−19 J. It moves to another level by absorbing 5.4 x 10−19 J of energy. Which of the following descriptions most likely explains what occurred?
The electron moved down to an energy level and has an energy of 10.92 x 10−19 J.
The electron moved down to an energy level and has an energy of 21.72 x 10−19 J.
The electron moved up to an energy level and has an energy of 10.92 x 10−19 J.
The electron moved up to an energy level and has an energy of 21.72 x 10−19 J.
Answer:
The electron moved up to an energy level and has an energy of 21.72 x 10−19 J.
Explanation:
i know
Answer:
D) The electron moved up to an energy level and has an energy of 21.72 x 10−19 J.
Explanation:
I took the test and got it right.
what are the most abundant metal in the earths crust from 1 to 10
Answer:
1. Oxygen - 46.1%
2. Silicon - 28.2%
3. Aluminium - 8.23%
4. Iron - 5.63%
5. Calcium - 4.15%
6. Sodium - 2.36%
7. Magnesium - 2.33%
8. Potassium - 2.09%
9. Titanium - 0.565%
10.Hydrogen -0.140%
Explanation:
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What makes a compound an acid?
a. It dissolves into Hydrogen ions in water (H+ and H3O+)
b. It has a pH higher than 7
c. It dissolves into Hydroxide ions in water (OH-)
d. It cannot be mixed with oil
if element X has two valence electrons and element Y has five valence electrons the formula for the compound is?
Answer:
the answer to the question is X3Y2
How many grams Fe2O3 would be
required to make 187 g Fe?
Fe₂O3 + 3CO →2Fe + 3CO2
267.14 gm grams[tex]Fe_2O_3[/tex] would be required to make 187 g Fe.
What is a balanced chemical equation?A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge is the same for both the reactants and the products.
The balanced equation:
Fe₂O₃ + 3 CO ⟶ 3 CO₂ + 2 Fe
We know that the molecular mass of iron-oxide = 160 g/mole.
We know that the molecular mass of iron = 56 g/mole.
From the above reaction, we can say that
1 mole of iron -oxide produces 2 moles of iron
160 gm of iron oxide produce 112 gm of iron
So,
1 gm of iron required 160÷112 =1.42 gram of iron oxide
Therefore,
187 gm of iron required 1.42 x 187 =265.54 of iron oxide.
Therefore 187 gm of iron required 267.14 iron oxide.
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In What season of Breaking Bad did the character Walter White die.
Answer:
Season 5 lol
Explanation:
Answer:
season 1
Explanation:
the man was shot rip
what mass of aluminium is required to produce 500g of aluminium chloride?
2Al + 3Cl₂ --> 2AlCl₃
Answer:
101.18 grams
Explanation:
From the equation you can see that the same number of MOLES will be required as MOLES of aluminum chloride produced.
Mole weight of aluminum chloride = 26.981 + 3 * 35.45 = 133.331 gm
500 gms of this is then 500 / 133.331 = 3.75 moles
So you need 3.75 moles of aluminum
3.75 moles * 26.981 g/mole = 101.18 grams of Al
101.07 grams of aluminum (Al) are required to produce 500 grams of aluminum chloride (AlCl₃) according to the given chemical equation.
Mass is a fundamental physical property of matter that represents the amount of substance contained in an object. It is a measure of the total amount of matter or material in an object, and it is typically measured in units such as grams (g) or kilograms (kg).
Molar mass, also known as molecular mass or formula mass, is the mass of one mole of a chemical substance. It is usually expressed in grams per mole (g/mol). Molar mass is a fundamental concept in chemistry that allows scientists to relate the mass of a substance to the number of moles it contains.
The balanced chemical equation is:
2Al + 3Cl₂ → 2AlCl₃
From the balanced equation, 2 moles of aluminum (Al) react with 3 moles of chlorine gas (Cl₂) to produce 2 moles of aluminum chloride (AlCl₃).
Molar mass of Al = 26.98 g/mol
Molar mass of Cl = 35.45 g/mol
Molar mass of AlCl₃ = 2 × (26.98 g/mol) + 3 × (35.45 g/mol)
= 133.34 g/mol
moles of AlCl₃ = mass / molar mass
moles of AlCl₃ = 500 g / 133.34 g/mol
= 3.749 moles
In the reaction, 2 moles of Al react to produce 2 moles of AlCl₃.
Therefore, moles of Al = moles of AlCl₃
moles of Al = 3.749 moles
Step 4: Calculate the mass of Al required:
mass of Al = moles of Al × molar mass of Al
mass of Al = 3.749 moles × 26.98 g/mol
= 101.07 g
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What is the empirical formula for the molecular formula given? Molecular formula: C5H12O
What is the empirical formula for the molecular formula given? Molecular formula: C5H12O
The empirical formula for the given molecular formula C₅H₁₂O. As the molecular formula cannot be reduced into simplest ratio, therefore, the empirical formula and the molecular formula are the same.
What is the empirical formula?The empirical formula can be described as the simplest ratio of the number of different atoms present in a compound. The molecular formula of the compound can be described as the actual number of each different atom in a molecule. This formula is generally used and is also a multiple of the empirical formula of a compound.
The empirical formula provides the ratio of the number of atoms of a chemical in a given compound. The percentage composition directly gives the empirical formula of the compound.
The molecular formula can be reduced into the empirical formula of the compound by dividing the subscripts with a number that can provide the smallest ratio of the elements in the compound.
For the given molecular formula, the further simplest or most reduced ratio cannot be possible. Therefore, the empirical formula of the compound will be the same as the molecular formula. Therefore empirical formula of the compound is C₅H₁₂O.
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What is Mg ^-2 and SO4^-2=
MgSo4 will be formed
Q2:- Which branch of chemistry deal with the structure and properties of naturally occurring molecules?
Answer:
Explanation:
Organic ChemistryOrganic Chemistry It is often known as the 'Chemistry of Life' that deals with the structure, properties and reactions of organic compounds. A study of Organic Chemistry helps students to identify and classify the various naturally occurring compounds and to create one with desired properties and functions.
The branch of chemistry that deals with the structure and properties of naturally occurring molecules is Organic Chemistry.
What is Organic chemistry?Chemistry is divided into several branches in which we learn inorganic chemistry, Physical chemistry, analytical chemistry and also organic chemistry. Organic chemistry deals with natural compounds in which we learn about chemical and physical properties of natural compounds and then the structures of organic compounds as well. We study about the formation of different organic compounds and which kind of compounds will be useful in which field.
For example- Alcohols can be used in vehicles, as solvents, it can be used to form many other organic compounds as well.
Aldehydes, Ketones are the organic compounds which has medicinal use and helps in forming other compounds as well.
Therefore, The branch of chemistry that deals with the structure and properties of naturally occurring molecules is Organic Chemistry.
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There are 4.9875 mol C, 7.9802 mol H,
and 2.00 mol O in the sample.
Divide each by the smallest number of
moles. What is the ratio for the C?
[?] C [ ]H[ ]0
Answer:
So, in 1 mol there are 6.02x10^23 atoms, regardless of the susbtance, only the weight of the mol changes. Doing a simple rule of 3 we can get many of the answers to your questions.
Explanation:
1mol of Ar → 6.02x10^23 atoms
0.25 mol → X
So now what we do is (0.25mol * 6.02x10^23 atoms)/1 mol = X
That gives us 1.505x10^23 atoms in 0.25 mol of Ar.
For this I'm guessing you mean the stable form of oxygen, O2. The Avogadro constant stays well, constant.
1 mol of O2 → 6.02x10^23 molecules
1.0×10^-4 mol of O2 → X molecules
So you can do (1.0×10^-4 * 6.02x10^23) / 1mol = X
(I feel like this is homework, so i will help you, but not give you all the answer, will be good practice to try yourself) :)
For this you need to know the weight of a mol of Be. Luckily the periodic table gives us that number. The number under each element is the weight in grams of 1 mol .
Answer:
C- 2.48925 H- 3.9901 O- 1
Explanation:
Read the instructions
What type of molecule is shown below
Answer:
alcohol
Explanation:
alcohol thus, C2H5OH
Compare
Ion and Radical
Atom and molecule
Organic and inorganic compounds
Answer:
'An ion has a non-zero electric charge. A radical has an atom with unfilled electron shells and so is very reactive, but is electrically neutral.'
'Atoms are single neutral particles. Molecules are neutral particles made of two or more atoms bonded together.'
'The primary difference that lies between these organic compounds and inorganic compounds is that organic compounds always have a carbon atom while most of the inorganic compounds do not contain the carbon atom in them.'
Organic and inorganic compounds:
Similarities:::---
1) In both organic and inorganic compound, the elements joining in making compound complete their octet.
2) Organic compound shows isomerism (R/S , E/Z , cis/trans, enantiomers, diastereomers, etc), just as inorganic compound do (Δ/Λ, enantiomers, R/S enantiomers, cis/trans, fac/mer isomers, etc).
3) Organic compound and inorganic compounds can be very active in chemical reactions, e.g. organolithium reagents could be flammable or even pyrophoric (generally stored under 10°C), while inorganic reagents like in this paper are quite rapid...
Differences:::---
1) Organic compound are very long in size so they can make polymer but inorganic compound are not very long but its structure might me complex.
2) The boiling,melting point of organic compound is lass than inorganic compound.
3) Organic compound always contains carbon but inorganic compounds might not.
4) Organic compound
_____________________________
Ion and Radical Atoms:
In some sense they are a bit similar. The main difference is that a neutral radical has no charge imbalance between the protons and electrons, but the cation or anion does.
Ions are written with an explicit charge because of that charge imbalance, but radicals may or may not have an imbalance of charge. Just because a molecule is a radical doesn't mean it's neutral.
For example, if you shoot 2-pentanone with an electron beam for Electron "Impact" Mass Spectroscopy, where you essentially study molecules whose structures break into smaller pieces as a result of interacting with stray electrons to identify the molecules, you get a cationic radical (middle, or far right of the following diagram).
What is the substance produced by a chemical reaction called?
a. Reactant
b. Product
c. Resultant
d. Reagent
e. Summation
Answer:
=> 11. d. Moon
The moon is not a light source because it does not emit its own light.
=> 12. b. The light is refracted.
13. What is the substance produced by a chemical reaction called?
=> b. Product
What is an example of climate?
Answer:
Tropical.Dry.Temperate.Continental.Polar.Explanation:
The tropical climate in the Köppen system is defined as having an average temperature in every month of above 18°C. There is no winter season, and annual rainfall is large and exceeds the annual evaporation. The dry climate regions are characterized by evaporation surpassing the humidity of precipitation. It is represented with the letter "B" in the Köppen climate classification. Precipitation is infrequent and vegetation is scarce in these areas. Temperate climates are generally defined as environments with moderate rainfall spread across the year or portion of the year with sporadic drought, mild to warm summers and cool to cold winters.A relatively dry climate with very hot summers and very cold winters, characteristic of the central parts of Asia and North America. A polar climate consists of cool summers and very cold winters, which results in treeless tundra, glaciers, or a permanent or semi-permanent layer of ice. It is identified with the letter E in the Köppen climate classification.#Let's Study
#I Hope It's Help
#Keep On Learning
#Carry On Learning
[tex]\\ \blue{MaggieEve}[/tex]
Which of the following observations would indicate that a material is a pure substance?
O It does not dissolve in water.
O It changes color after heating.
O It cannot be physically broken down into different types of atoms.
O It can be physically broken down into different types of molecules.
Answer:
C
Explanation:
Got it right on a test
Explain why beryllium looses electrons while ionic bonds,while Sulfur gains electrons.
Answer:
Since Beryllium has a larger atomic radius than Sulphur its electrons are not strongly attracted to the nucleus hence lost easily. But Sulphur has a small atomic radius hence electrons are more closely attracted to the nucleus.
There are 6.02 x 10^23 formula units Na2O in a sample. How many grams of Na2O is this? The molar mass of Na2O is about 62 g/mol.
Answer:
= 62g
Explanation:
We have been asked to find the mass of Na2O having 6.02 x 10^23 units.
We know that one mole of a substance contains 6.02 x10^23 units/particles.
That means we have one mole of Na2O.
To find the mass of Na2O we use the formula,
mass = number of moles x formula mass
= 1 mole x 62g/mol
= 62g
Therefore the mass of Na2O with 6.02 x 10^23 units is 62g.
