How does getting funding from the government affect scientific research?

he is a good scientist because he postulated that chemical reactions resulted in the rearrangement of the reacting atoms

Final answer:

John Dalton was a good scientist known for laying the foundation of modern atomic theory in Chemistry. Unlike his predecessors, he backed his theories with experimental evidence. His work in the field earned him considerable honor and influence.

Explanation:

John Dalton was indeed a good scientist, and his work had a profound impact on the field of Chemistry. Not only did Dalton lay the foundations of the modern atomic theory, but he also provided experimental evidence to support his ideas, which differentiated him from earlier philosophers who merely speculated about the nature of matter.

Dalton observed that matter combined in fixed ratios and that chemical compounds always contain the same proportion of elements by mass, a concept supporting the law of definite proportions. It's also worth noting that Dalton was recognized for his work in science with numerous honors, and his influence was significant enough that over 40,000 people in Manchester paid their respects at his funeral.

The answer is 38.05 years

To solve this question, we should convert the given seconds to the year.

So,

Number of seconds in a year = [tex]3.154 * 10^7[/tex]

Seconds the man lived = [tex]11.2 * 10^9[/tex].2 * 10^9

How many years, he lived = ?

Here a unit method will be applied as

Total years the man lived= [tex]1.2 * 10^9/3.154 * 10^7[/tex]

Total years the man lived = 38.05 years

1) Balanced chemical reaction 1:

2CuFeS₂ + 3O₂ → 2CuS + 2FeO + 2SO₂.  

Balanced chemical reaction 2: 2FeO + SiO₂ → 2FeSiO₃.  

Balanced chemical reaction 3: 2CuS → Cu₂S + S.

Balanced chemical reaction 4: Cu₂S + S + O₂ → 2Cu + 2SO₂.

m(Cu) = 3.0 g; mass of copper in one penny.  

n(Cu) = m(Cu) ÷ M(Cu).

n(Cu) = 3 g ÷ 63.55 g/mol.

n(Cu) = 0.047 mol; amount of copper in one penny.

2) From balanced chemical reactions: n(Cu) : n(CuFeS₂) = 1 : 1.

n(CuFeS₂) = 0.047 mol.

ω(CuFeS₂) = 63.00% ÷ 100%.

ω(CuFeS₂) = 0.630; a percent yield of chemical reaction 1.

m(CuFeS₂) = 0.047 mol · 183.54 g/mol ÷ 0.630.

m(CuFeS₂) = 13.692 g; mass of chalcopyrite for one penny.

m(CuFeS₂) = 13.6927 g · 100.

m(CuFeS₂) = 1369.27 g; mass of chalcopyrite for 100 pennies.

The percent yield of a reaction indicates the percentage of the theoretical maximum product that is actually obtained. Due to a 63% yield in the first reaction stage, more chalcopyrite than the actual weight of 100 pennies needs to be mined. This original amount of chalcopyrite can be found by reverse calculating the theoretical yield that leads to 250g as the actual yield.

To answer this question, we need to first understand the concept of percent yield. This is a measure of how much of a product is obtained in a chemical reaction relative to the theoretical maximum amount that could be produced. It is calculated using the formula:

Percent Yield= (actual yield/theoretical yield) x 100%

In the given question, the percent yield of the reaction involving chalcopyrite is 63.00%. Post that, all other reaction steps had a yield of 100%, implying no loss in those stages. Therefore, to produce 100 pennies, we would need to mine more chalcopyrite than the actual weight of 100 pennies, to account for the loss in the first stage of the reaction.

Assuming a penny weighs about 2.5 g and is composed primarily of copper, 100 pennies would weigh approximately 250 g. To calculate how much chalcopyrite needed to be mined considering the percent yield, we would reverse calculate the theoretical yield that gives us 250g as actual yield at 63%. That would indicate the original amount of chalcopyrite needed to be mined.

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I believe it is called, Density.

Answer : The ratio of the mass of a substance to its volume is called density.

Explanation :

Density : It is defined as the mass of a substance contained per unit volume.

The unit of mass is gram (g) and the unit of volume is milliliter (ml). So, the unit of density is g/ml.

Formula used :

[tex]Density=\frac{Mass}{Volume}[/tex]

For example : If mass of object is 550 grams  and volume of water displaced 25 ml. Calculate the density of an object.

By using formula, we get:

[tex]Density=\frac{550g}{25ml}=22g/ml[/tex]

Thus, density of the object will be 22 g/ml

Answer:C

Explanation:

Both equations are balanced.

a) 3H₂SO₄ + 2Al ⟶ Al₂(SO₄)₃ + 3H₂

On the left On the right

      6H                6H

      3S                 3S

    12O               12O

     2Al                2Al

b) 2KCl + Pb(NO₃)₂ ⟶ 2KNO₃ + PbCl₂

On the left   On the right

      2K                 2K

      2Cl               2Cl

      1Pb                1Pb

     2N                 2N

     6O                 6O

Hey there!

Given the reaction:

4 AI + 3O2 ------>  2 AI2O3

4 moles Al --------- 3 moles O2

9.30 moles Al  --------- ?? moles  O2

9.30 * 3 / 4  =>  6.975 moles of O2

Molar mass O2 => 32.0 g

Therefore:

6.975 * 32.0 =>  223.3 g of Oxygen

Hope that helps!

The correct name of the compound is potassium bromate.

KBrO₃ contains a metal, so it is an ionic compound.

The name of an ionic compound is: name of metal cation + name of anion .

Name the metal

The name of the cation is the name of the metal — potassium

The ion has only one charge (+1), so the name of the ion does not use a Roman numeral in parentheses.

Name the anion

BrO₃⁻ is an oxyanion. Name = (stem)ate = bromate.

Name the compound

The names of salts do not use multiplying prefixes like mono- or di-.

∴ metal ion + anion → potassium bromate

The correct name for the compound KBrO3 is potassium bromate.

The correct name for the compound KBrO3 is potassium bromate. It is a chemical compound that was formerly used as a food additive in baking to improve dough elasticity and bread volume. It acts as a strong oxidizing agent. However, due to concerns about its potential carcinogenicity, many countries have banned or restricted its use in food products.

Potassium bromate can potentially break down into bromide, which can react with other compounds in baking to form brominated byproducts. As a result, safer alternatives like ascorbic acid (vitamin C) and potassium iodate are now commonly used in the baking industry to achieve similar results without health risks.

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Answer: Option (d) is correct.  

EXplanation:

The susceptibility to search for interpreted data in such a way that confirms the hypothesis is known as confirmation bias.

Scientific consensus is the collective decision or opinion of scientists in an experiment or study.

Peer view is the collective view of two or more persons in an experiment that will lead to a collective conclusion.

Selection bias is the bias that occurs because of selection of data due to which proper results are not obtained.

Therefore, when two scientists work together on an experiment but they have different hypothesis and when the scientist look at experimental results they interpret the data in different ways and come up with different conclusions, this situation is a confirmation bias.

Thus, out of the given options, option (d) is correct.  

Potassium (K) has a larger atomic radius than lithium (Li) because it is located further down in Group 1 of the periodic table, indicating it has more electron shells.

To determine which atom has a larger atomic radius between lithium (Li) and potassium (K), we need to look at the periodic table. Atomic size increases as we move down a group because each successive element has an additional electron shell. Thus, lithium, which is located at the top of Group 1, has fewer electron shells compared to potassium that is found further down the same group.

Lithium is in the second period and contains only two electron shells, while potassium is in the fourth period and contains four electron shells. This additional number of shells in potassium means its electrons are held further away from the nucleus compared to lithium. Therefore, potassium has a larger atomic radius than lithium.

19 in = 1.6 ft

You know that

12 in = 1 ft

If you divide both sides by 12 in, you get the conversion factor: 1 = 1 ft/12 in.

If you divide both sides by 1 ft, you get the conversion factor: 12 in/1 ft = 1.

Both are conversion factors because they both equal one and multiplying a measurement by one does not change its value.

You choose the conversion that gives you the correct dimensions for your answer. It must have the correct dimensions on top (in the numerator),

Thus, to convert 19 in to ft, you use the conversion factor with “ft” on the top.

∴ Length = 19 in × (1 ft/12 in) = 1.6 ft

Answer:

The given statement is True

Explanation:

Calcium, carbon dioxide, and water combine to form calcite. Calcite is a mineral that is composed of calcium carbonate (CaCO3). The chemical reaction that occurs when calcium, carbon dioxide, and water react together to form calcite is called a precipitation reaction.

Final answer:

To find the volume of an object, use the formula Volume = Mass / Density. This can be applied by dividing the object's mass by its given density, yielding the volume in appropriate units.

Explanation:

How to Find Volume Using Mass and Density:

To find the volume of an object when you have the mass and the density, you can use the formula:

Volume = Mass / Density
This formula is derived from the basic density equation, Density = Mass / Volume, which can be rearranged to find volume. For example, if the mass of an object is given in grams and its density is given in grams per cubic centimeter, dividing mass by density will give you the volume in cubic centimeters.

Example Problem:

Lets say we want to find the volume of an object with a mass of 250 grams and a density of 5 grams per cubic centimeter. Applying the formula:

Volume = Mass / Density = 250g / 5g/cm3 = 50 cm3

In this case, the volume of the object would be 50 cubic centimeters.

Answer:

The Somatic nervous system and The autonomic nervous system

are two parts of the peripheral nervous system.

Explanation:

The peripheral nervous system is a part of the nervous system which is present outside the spinal cord and the brain.

Its function is to link the central nervous system to the organs and limbs.

The peripheral nervous system is of two types

Somatic nervous system: its main function is to regulate the body movements and the control of voluntary muscular activity is called reflex arcs

The autonomic nervous system: its function is to control all the body functions like digestion, urination.heart rate, pupillary response, and respiratory rate.

The concentration of solution in M or mol/L can be calculated using the following formula:

[tex]C=\frac{n}{V}[/tex] .... (1)

Here, n is number of moles and V is volume of solution in L.

The molecular formula of potassium sulfate is [tex]K_{2}SO_{4}[/tex] thus, there are 2 moles of potassium in 1 mol of potassium sulfate.

1 mol of potassium will be there in 0.5 mol of potassium sulfate.

Mass of potassium is 4.15 g, molar mass is 39.1 g/mol.

Number of moles can be calculated as follows:

[tex]n=\frac{m}{M}[/tex]

Here, m is mass and M is molar mass

Putting the values,

[tex]n=\frac{(4.15 g}{(39.1 g/mol}=0.1061 mol[/tex]

Thus, number of moles of  [tex]K_{2}SO_{4}[/tex] will be [tex]0.1061\times 0.5=0.053 mol[/tex].

The volume of solution is 225 mL, converting this into L,

[tex]1 mL=10^{-3}L[/tex]

Thus,

[tex]225 mL=0.225 L[/tex]

Putting the values in equation (1),

[tex]C=\frac{(0.053 mol}{0.225 L}=0.236 M[/tex]

Therefore, concentration of potassium sulfate solution is 0.236 M.

1. Plasma is "the state..." because plasma is rarely natural on earth (only lightning strikes) and has the highest temp

gas is "particles move freely" they do move freely

liquid is "it expands to fill volume" they do not have definite boundaries so they fill up the container

solid is "it retains its shape" yup dis is pretty obvious ig

2.

I agree with your answers.

it wouldnt be hypothesis or theory because they are basically the same thing and they explain facts. fact would be the best answer

conduct experiments would be the most logical here because you can gain new knowledge from conducting experiments instead of the rest.

The correct representation for the subshell with n=2 and l=1 is the '2p' subshell, which has three orbitals, each capable of holding two electrons, for a total of six electrons. This follows the notation where 'n' indicates the principal quantum number, and 'l' (the azimuthal quantum number) determines the subshell type.

The correct representation for the subshell with n=2 and l=1 is the 2p subshell. In the notation used for electronic configurations, 'n' represents the principal quantum number, which corresponds to the principal shell, and 'l' represents the azimuthal quantum number, which corresponds to the subshell. Since 'l' is equal to 1, we refer to the subshell with the letter 'p'. As such, the entire designation becomes '2p', with the number '2' denoting the principal shell and 'p' denoting the type of subshell.

It is important to note that each principal shell has 'n' subshells. Therefore, with n=2, there are two subshells available which are 2s and 2p. The 2p subshell is allowed because n ≥ 2, while a 2d subshell would not exist since a 'd' subshell begins with n=3.

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Hello!

Before I can answer your question we need to know the different types of chemical reactions that can occur:

Combustion is an answer that can usually be ruled out unless oxidation is occuring in the chemical equation (hyrdrogen occuring with oxygen to react)

Synthesis reaction, also known as a Combination reaction, is when the reactants combine to form a single product.

Decompostion is when a single reactant is deconstructed to form multiple products, or the opposite of Synthesis.

With these definitions alone, since they are opposite types of reactions, the answer would be Synthesis and Decomposition reactions !

Hope this helps and if you need anymore clarification feel free to ask.

Answer: Synthesis and decomposition

i believe it is chemical change.

hope it helps

The mass of Ben’s dog is 20 kg.

Mass = 2 m³ × (10 kg/1 m³) = 20 kg

IMPROVES RESULTS APEX!!!!1

The following best describes technology is:

C. the application of engineering to create useful products.

Technology is the application of scientific knowledge to solve practical problems. It is the use of tools, machines, and other methods to do things more efficiently and effectively. Technology can be used to create products, services, and systems that improve our lives.

Engineering is the discipline that applies scientific principles to design and build structures, machines, and other products. Engineers use their knowledge of science and mathematics to solve problems and create new products.

When engineers apply their knowledge to create useful products, they are using technology. For example, engineers used their knowledge of physics and chemistry to create the first computers. They also used their knowledge of engineering to design and build the machines that are used to manufacture computers.

So, technology is the application of engineering to create useful products. It is the use of scientific knowledge to solve practical problems and improve our lives.

To know more about technology here

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The complete question is:

Which of the following best describes technology

A. Something created for only scientists to use

B. the method of thinking that scientists use.

C. the application of engineering to create useful products.

D. A scientific idea

Given:

A → Products

         [A] M            Rate(M/s)

1.        0.15            0.014

2.       0.30           0.113

3.       0.60           0.905

To determine:

Order of the reaction

Explanation:

The rate of the given reaction can be expressed as:

Rate = k [A]ⁿ-----(1)

where k = rate constant

[A] = concentration of A

n = reaction order

Based on equation (1) the Rates 1 and 2 can be expressed as:

0.014 = k[0.15]ⁿ ------(3)

0.113 = k[0.30]ⁿ-------(4)

Dividing eq (4) by (3) we get:

0.113/0.014 = [0.30/0.15]ⁿ

8 = 2ⁿ

i.e. 2³ = 2ⁿ

n = 3

Ans: Thus, the order of the reaction is 3

The order of the given reaction is [tex]\boxed{3}[/tex] .

Further Explanation:

Order of reaction:

This indicates dependence of rate on power of concentration of reactants involved in the chemical reaction. On the basis of order of reaction, reaction can be first-order, second-order and so on.

Given reaction is as follows :

[tex]A\rightarrow\text{Products}[/tex]

Consider n to be the order of this reaction. So rate of reaction for the given reaction is expressed as follows:

[tex]\text{Rate}=k\left[A\right]^n[/tex]                                                   ...... (1)

Here,

k is the rate constant for the reaction.

[A] is the concentration of A.

n is the order of reaction.

When concentration of A is 0.15 M, rate of reaction is 0.014 M/s.

Substitute 0.15 M for [A] and 0.014 M/s for rate in equation (1).

[tex]\text{0.014\text{M}}=k\left[0.15\right]^n[/tex]                                              ...... (2)

When concentration of A is 0.30 M, rate of reaction is 0.113 M/s.

Substitute 0.30 M for [A] and 0.113 M/s for rate in equation (1).

[tex]\text{0.113\text{M}}=k\left[0.30\right]^n[/tex]                                              ...... (3)

Dividing equation (3) by equation (2),

[tex]\begin{aligned}\dfrac{\text{0.113\text{M}}}{\text{0.014\text{M}}}=&\dfrac{k\left[0.30\right]^n}{k\left[0.15\right]^n}\\\left(2\right)^3=&\left(2\right)^n\end{aligned}[/tex]

Solving for n,

[tex]n=3[/tex]

Therefore order of reaction becomes 3.

Learn more:

1. Rate of chemical reaction: https://brainly.com/question/1569924

2. The main purpose of conducting experiments: https://brainly.com/question/5096428

Answer Details:

Grade: Senior School

Subject: Chemistry

Chapter: Chemical Kinetics

Keywords: order, rate, k, A, products, 3, n, rate constant, order of reaction, 0.15 M, 0.30 M, 0.113 M/s, 0.014 M/s.

As mentioned in its properties, one of the properties of synthetic fibres is that it will stick to the body if in contact with fire, or high temperatures. Hence, as the answer follows, rayon, being a synthetic fibre, will stick to the body.

Oxidized is that which goes up in oxidation number. The Fe goes from +2 to +3. Reduced goes down. Mn goes from +7 to +2. The oxidizing agent gets reduced. Mn. The reducing agent gets oxidized.

Hello!

To find electron configuration for Idoine we need to understand the following steps:

In this case, for Iodine. If we follow these rules we can see that the electron configuration is [Kr] 4d^10 5s^2 5p^5. We use Krytpon in front because that is the last full and stable noble gas before this particular element. Atoms are just trying to be stable so the goal is to achieve that full shell.

The electron configuration for a neutral iodine atom is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁵, and for an iodine anion (I⁻), it gains one more electron, resulting in 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶.

The electron configuration of iodine (I), which is a halogen with the atomic number 53, follows the aufbau principle and Hund's rule, filling orbitals in order of increasing energy. For a neutral iodine atom, the electron configuration is:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁵.

When iodine forms an anion with a 1- charge, such as when it's added to table salt as an essential dietary element to prevent goiter, it gains an extra electron. The electron configuration for the iodine anion (I⁻) is:

1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d¹⁰ 4p⁶ 5s² 4d¹⁰ 5p⁶.

False

Although we use many of their ideas to describe atoms today, such as the existence of a tiny, dense nucleus in an atom (proposed by Rutherford), or the notion that all atoms of an element are identical (proposed by Dalton), some of their ideas have been rejected by the modern theory of the atom.

For example, Thompson came up with the plum pudding model to describe an atom, which resembled a sphere of positive charge with electrons embedded in it. We know now, however, that atoms are mostly empty space with a tiny, dense nucleus.

Another example is Dalton's atomic theory, which stated that atoms are indivisible particles. However, this was disproved by the discovery of subatomic particles.

Answer:

Its false

Explanation:

Answer:

H = 41.3 mol H; Atoms = 56.8 mol

Explanation:

A molecule of propane contains eight atoms of H for every 3 atoms of C or 8 mol H atoms for every 3 mol C atoms.

∴ [tex]\text{Moles of H atoms} = \text{15.5 mol C atoms} \times \frac{\text{8 mol H atoms }}{\text{3 mol C atoms }} = \text{41.3 mol H atoms}[/tex]

Total atoms = 15.5 mol C atoms + 41.3 mol H atoms = 56.8 mol atoms

Given 15.5 moles of carbon atoms in a sample of propane (C3H8), there are a total of 56.87 moles of atoms (carbon and hydrogen combined). This is calculated by dividing the given carbon moles by the count of carbon atoms in a propane molecule, then multiplying the result with the total count of atoms in one molecule of propane.

The question pertains to the calculation of total moles of atoms in propane (C3H8), given the moles of carbon atoms as 15.5. Propane is a hydrocarbon which contains 3 moles of carbon atoms and 8 moles of hydrogen atoms per molecule. Therefore, for every 1 mole of propane, there are 3 moles of carbon and 8 moles of hydrogen, totaling 11 moles of atoms.

If 15.5 moles of carbon atoms are present, this means that there are 15.5/3 = 5.17 moles of propane. Therefore, the total moles of atoms in your propane sample would be 5.17 moles propane x 11 moles atoms/mole propane = 56.87 moles of atoms. This figure consists of the number of moles of carbon and hydrogen atoms combined in the propane sample.

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Answer is: 2,0,0,±1/2.

1) n = 1. The principal quantum number (n) is one of four quantum numbers which are assigned to each electron in an atom to describe that electron's state.

2) l = 0. The azimuthal quantum number is a quantum number for an atomic orbital that determines its orbital angular momentum and describes the shape of the orbital.

3) ml = 0. Magnetic quantum number specify orientation of electrons in magnetic field and number of electron states (orbitals) in subshells.

Magnetic quantum number (ml) specifies the orientation in space of an orbital of a given energy and shape . Magnetic quantum number divides the subshell into individual orbitals which hold the electrons, there are 2l+1 orbitals in each subshell.  

4) The spin quantum number, ms, is the spin of the electron; ms = +1/2 or -1/2.

The possible quantum number set for an electron in the 2s orbital of a beryllium (Be) atom is n=2, l=0, ml=0, and ms=+1/2 or -1/2.

The possible quantum number set for an electron in the 2s orbital of a beryllium (Be) atom can be described as follows:

These quantum numbers represent the energy level, shape, orientation, and spin of the electron in the 2s orbital.

Poor electrical conductors like glass, plastic, wood, etc. conduct heat mainly through vibrations among the molecules. As molecules vibrate, they bump into their neighbors from time to time, transferring some of their energy (i.e. heat). Those neighbors then bump in to some of their neighbors on the other side and transfer some of the energy to them. The process continues, and the heat is transferred through the material, but it happens quite slowly because the molecules are mostly stuck in place (because they're part of a solid material. If they were liquid or gas, they could move around more freely and transport heat more quickly. That process is called convection, rather than conduction). Anyway, metals and other good electrical conductors have the ability to transfer energy through an additional mechanism. In this case, the vibrating molecules literally shake off some of their weakly-bound electrons (which are plentiful in metals and all other good electrical conductors). These high-energy electrons then fly away and bump into other molecules or electrons, transferring the heat. Unlike entire vibrating molecules, however, individual electrons are so small that they can travel much longer distances at much, much higher speeds before they bump into anything. (It's sort of like shooting a gun in a forest. The bullet may travel several hundred feet or more before it actually strikes a tree. If you tried to drive a bus in that same forest, however, you couldn't go more than a few feet without running into something) Hope this helps :)

Metals are good conductors of both electricity and heat due to the presence of free electrons that facilitate energy transfer, resulting in high thermal conductivity. Nonmetals are generally poor heat conductors and are considered insulators because they lack these free electrons, which causes them to transfer heat much slower.

The ability to conduct heat distinguishes metals from nonmetals. Metals like copper, aluminum, and silver are good conductors of electricity and, correspondingly, are also good thermal conductors. The thermal conductivity of metals can largely be attributed to the presence of free electrons that facilitate the transfer of energy as heat.

Nonmetals, on the other hand, typically have a lower thermal conductivity and are considered insulators. Materials such as wood, plastic, and rubber have a limited ability to conduct heat, causing them to be inefficient at transferring thermal energy compared to metals.

The difference is so notable that touching a metal object and a nonmetal object at the same temperature often results in the metal feeling colder due to its rapid heat conduction away from the hand. This property of metals is because they allow energy to flow more quickly throughout the material, whereas nonmetals like paper and Styrofoam conduct energy so slowly that they appear to maintain warmth for longer periods.