A bike travels at a constant speed of 4.0 m/s for 5 s, how far does it go?

Answer:

B) The equation for the reaction is not correctly balanced.

Explanation:

The decomposition of the water molecule in the hydrogen and the oxygen atoms are carried by the electrolytic cell. The equation for the reaction given is unbalanced.

The decomposition reaction is given as the reaction in which the compound is degraded into the constituent ions.

The electrolytic cell functions in the breakdown of water to hydrogen and oxygen with the application of the electric current.

The balanced equation for the decomposition of water is:

[tex]\rm 2\;H_2O(l)\;\rightarrow\;4\;H_2(g)\;+\;2\;O_2(g)[/tex]

The flaw in the given reaction is the decomposition is the unbalanced chemical equation.

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Answer:

Explanation:

chlorine

Chlorine must lose 7 electrons to attain the electronic configuration of Neon and this state is precarious in the case of chlorine which is an electronegative element

Answer:275.4 g Al2O3

Explanation: The mass of Al2O3 formed is 2.7 mol * 102 g/mol = 275.4 g. This is because the molar mass of Al2O3 is 102 g/mol. This means that when 1 mol of Al2O3 is formed, it has a mass of 102 g. Therefore, when 2.7 mol of Al2O3 is formed, it has a mass of 2.7 mol * 102 g/mol = 275.4 g.

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Answer:

P3S4

Explanation:

hope this helps

Answer:

radiowaves obeyed mathematical questions of the atom

Explanation:

From coursehero

Radiowaves seemed to abide by the mathematical equations of the atom. That is why the scientists thought they could explain the atom.

The electromagnetic spectrum's longest wavelengths are those of radio waves. They might be as big as our globe or as long as a football. In the late 1880s, Heinrich Hertz provided conclusive evidence of radio waves. He employed two spark gaps: one on a receiving antenna and one on an induction coil.

Sparks would cross its gap as well as waves carried by the coil transmitter's sparks were picked up by the receiving antenna. In his investigations, Hertz demonstrated that these signals had all the characteristics of electromagnetic waves.

You may listen to your preferred music by tuning a radio to a certain wavelength, or frequency. These electromagnetic radio waves are "received" by the radio, which then transforms them into audible sound waves by causing mechanical vibrations in the speaker.

Therefore, because the radiowaves could abide by the mathematical nature of the atom, they were thought to explain the structure of the atom.

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When calcium carbonate is heated, it breaks down into the components  calcium oxide and carbon dioxide.

What do you mean by calcium carbonate?

Calcium carbonate is a chemical compound that has the formula CaCO3. It is a common mineral found in rocks as calcite and aragonite, and it is the main component of pearls and the shells of marine organisms, snails, and eggs. Calcium carbonate is a component of agricultural lime that is formed when calcium ions in hard water react with carbonate ions to form limescale. It's commonly used in medicine as a calcium supplement or an antacid, but too much of it can be dangerous.

25 g of calcium carbonate contains 25/100 x (40 + 12 + 3 x 16) = 25/100 x 88 = 22 g of calcium and 12 g of carbon.

Hence, mass of carbon dioxide produced is 12 g.

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To solve this we must be knowing each and every concept related to atom and its discoveries. Therefore, electron was discovered by J.J Thomson.

Atom is the smallest particle of any element, molecule or compound. Atom can not be further divided. Atoms contains nucleus in its center and electron that revolve around the atom in fixed orbit.

In the nucleus, proton and neutron are present. Electron has -1 charge while proton has +1 charge. Neutron is neutral that is it has no charge. So overall the charge of nucleus is due to only proton, not by neutron. Electron was discovered by J.J Thomson.

Therefore, electron was discovered by J.J Thomson.

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Answer:

1 mole of iron =6.023×10^23 particles

1 particles of iron=1/6.023×10^23 mole

7.46×10^25 particles =1/6.023×10^23×7.46×10^25

=1.238×10^48 mole is a required answer.

If the feedback loop of the knee reflex was cut off at any points along its path, then there will be no response of knee reflex.

Its results in harm to any part of your reflex arc, which can be due to a basic knee-medicinal condition. Healthcare suppliers can disclose hyporeflexia by spouting your knee with a rubber hammer.

If your doctor taps on a band and there isn't a reflexive movement in the muscle, it's a sign of knee-health matter. Usually, absent reflexes are created by an issue with the nerves in the tendon and muscle. You may have other muscle symptoms along with areflexia, like weakness, or atrophy.

So we can conclude that A decline reflex reply can be related to peripheral knee-nervous system disorders.

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Fe which is Iron is the element that distinguishes between fission and fusion processes in terms of binding energy per nucleon.

Since the negatively charged electrons are held in place by the electrostatic pull of the positively charged nucleus, the electron binding energy is the lowest energy needed to remove an electron from an atom. Fe element distinguishes between fission and fusion processes in terms of binding energy per nucleon. In particle physics, the term "binding energy" describes the energy an atom receives from electromagnetic interaction as well as the quantity of energy needed to break an atom down into free nucleons.

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Chemical Indicator refers to a substance that changes color when there is a certain concentration of hydrogen ions in a solution.

Chemical indicators are any substances that provide a clear indication—typically a change in color—of the presence or absence of a certain chemical species, like an acid or an alkali, in a solution. One such chemical is methyl yellow, which gives an alkaline solution a yellow color. When introduced to acidic or alkaline solutions, substances are considered indicators when their color changes. There are several indicators that are frequently used in laboratories, including litmus, phenolphthalein, and methyl orange. Litmus paper: It turns red in acidic solutions and blue in basic ones. Methyl orange: This chemical exhibits a red color in an acidic solution and a yellow color in a basic solution.

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The amount of titanium-44 remaining will be 1/4 of the original amount, or 0.150 g.

Amount is a quantity or magnitude of something, typically money. For example, a person may refer to the "amount of money" they have saved, the "amount of time" it takes to do something, or the "amount of food" they have purchased. Amount can also refer to the total number of something, such as the "amount of people" who have attended an event or the "amount of work" that needs to be done.

The half-life of titanium-44 is 60.0 y, meaning that after every 60.0 y, the amount of titanium-44 will be halved.
0.600 g - 0.150 g = 0.450 g

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He is not falling nor about to fall which means he’s perfectly balanced. So this means the force in the photo and friction in this photo is in a balanced condition, balancing the boy.

In the given picture, the applied force and the force of friction are balanced. if two forces act in the direction to make the object in a balanced state.

If the forces are in a balanced state it does not change the motion of the object, and if it is in an unbalanced state, it causes to change in the state of the motion.

Therefore, the force of friction and the gravitational force are balanced is the correct option.

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The given question is incomplete, so the complete question image is attached in the image below.

Elements 'X', 'Y' and 'Z' have these atomic radii, in nanometers. X 0.072 nm Y 0.099 nm Z 0.111 nm. When atomic radii are correctly arranged,  the elements appears as z , y and then x across the period.

The atomic radii decreases across the period as we move from the left to right in the periodic table. the atomic radii will decreases as we move from the left to the right in the periodic table because in the period from the left to right the number of the electron will increases.

Thus, the order of the given elements arranged in the period in the periodic table as first z , then y and then x.

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Answer:

The formula for selenic acid is H2SeO4.

Explanation:

Selenic acid is an oxoacid of selenium, which means that it contains selenium and oxygen atoms bonded together in a compound that also contains hydrogen atoms. The selenate ion, which has the formula SeO42-, is an ion that contains selenium and oxygen atoms bonded together. Based on these facts, we can predict that the formula for selenic acid will contain selenium, oxygen, and hydrogen atoms.

To determine the specific ratio of atoms in the formula for selenic acid, we can look at the valences of the elements involved. The valence of an element is the number of bonds it can form with other atoms. Selenium has a valence of 6, oxygen has a valence of 2, and hydrogen has a valence of 1.

Since selenium has a valence of 6, it can bond with 6 oxygen atoms. This means that selenic acid will contain at least one selenium atom bonded to 6 oxygen atoms. In addition, selenic acid will contain hydrogen atoms, which can bond with oxygen atoms. Based on these considerations, we can predict that the formula for selenic acid will be H2SeO4, which contains one selenium atom bonded to 6 oxygen atoms and 2 hydrogen atoms.

The concentration which determines how much radiation is absorbed, increases together with the absorbance.

One factor that influences a sample's absorbance is concentration (c). It would be reasonable to suppose that more radiation will be absorbed as the concentration rises, raising the absorbance. As a result, the relationship between concentration and absorbance is straightforward.

Another component is the path length (b). The absorbance rises as the length of the radiation beam and the number of molecules in its path do as well. As a result, the concentration is inversely related to the distance traveled. As you are undoubtedly already aware from earlier experiences, a particular chemical species absorbs some wavelengths of radiation but not others.

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The complete question as follows

Why is absorbance directly proportional to concentration?

Answer:

calcium (ca)

Explanation:

If the actual yield and percent yield are 51.4g and 77.0%, respectively, calculate the theoretical yield. We predicted a theoretical yield of 13 grams for the reaction of Na with Cl2.

Yield is determined by dividing the principal amount by the net realized return. Gains and returns on stock investments, for instance, can take one of two kinds. On the basis of the chemical equation's stoichiometry, theoretical yield is computed. Experimental data are used to determine the real yield. Calculating the ratio of actual yield to theoretical yield yields the percent yield. The % ratio of the theoretical yield to the actual yield is known as the percent yield. It is calculated as the theoretical yield multiplied by 100% divided by the experimental yield.

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Answer:

I'm not the best at chemistry but from what I remember you need to balance the equation and you need the arrows. It wants you to use double displacement and so thats the definition im assuming.

Explanation:

An example would be

Na2SO4 + SrCl2 --> 2 NaCl + SrSO4

This is a balanced equation.

https://en.intl.chemicalaid.com/tools/equationbalancer.php

This link will help you balance an equation.

Hopefully this helps I appologize if it doesn't.

No, because  every M&M's is identical.

M&M's contain the same amount of protons, M&M's are the same hue. In other words, the size represents the various neutron counts.

Atoms of the same chemical element called isotopes each have a distinct mass number.

While isotopes can vary in mass, they never do so in atomic number (the amount of protons). You will use M&Ms to represent atoms because we are unable to see them. These objectives are use in M&Ms to determine the average atomic mass and to observe how different isotopes are.

In this the number show how many M&M's of that color and size are packed into that bags.

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The specific heat capacity of the substance, given that the subtance changes temperature from 35.0 °C to 65.0 °C when it absorb 15000 J of energy is 50 J/gºC

We'll begin by obtaining the change in the temperature of the substance.etails below:

ΔT = T₂ - T₁

ΔT = 65 - 35

ΔT = 30 °C

Finally, we shall determine the specific heat capacity of the substance. Details below:

Q = MCΔT

15000 = 10 × C × 30

15000 = 300 × C

Divide both sides by 300

C = 15000 / 300

C = 50 J/gºC

Thus, the specific heat capacity of the substance is 50 J/gºC

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Answer:

B

Explanation:

A chemist determined that moles of silver participated in a chemical reaction using measurements. The mass of silver involved in the chemical reaction is 1.08 grams.

Moles of silver participated = 0.01

Molar mass of silver = 108 gram/mole

Weight of silver participated= mole* molar mass

                                                = 0.01*108 gram

                                                = 1.08 gram

A chemist (from the Greek chm(a) alchemy; replacing chymist from Medieval Latin alchemist)  is a scientist who studies chemistry. Chemists investigate the structure and properties of matter. Chemists meticulously describe the properties of molecules and their constituent atoms in terms of quantities. Chemists carefully measure the proportions of substances, the rates of chemical reactions, and other chemical properties. Pharmacists are commonly referred to as chemists in Commonwealth English.

Chemists apply their knowledge to learn the composition and properties of new substances, as well as to reproduce and synthesize large quantities of useful naturally occurring substances and to create new artificial substances and processes.

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A proposed explanation for an observation is theory. Option C is the correct answer.

This refers to a carefully articulated explanation for observations of the natural world that have been arranged using the scientific method, gathering many facts and hypotheses.

A proposed explanation for an observation is a statement or theory that attempts to explain or account for an observation. It is a possible explanation for a phenomenon and is often based on available evidence, research, and data. It may be tested and refined through further observation and experimentation to determine its accuracy and validity.

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Energy transfer from one region of the atmosphere to another is critical in meteorology because it affects the weather.

What is Meteorology?

Meteorology is the science of studying the atmosphere and its phenomena such as weather, climate, and air pollution. It is a branch of the atmospheric sciences and studies the physical processes that make up the atmosphere and how the atmosphere affects the Earth and its inhabitants.

The amount of heat needed to be supplied to the parcel is given by the equation:

Q = nRT∆V

Where n is the number of moles of air, R is the ideal gas constant, T is the temperature in Kelvin and ∆V is the change in volume.

Therefore, the amount of heat needed to be supplied to the parcel is given by:

Q = (1.00 mol)(8.314 J/molK)(300 K)(30.0 dm3 - 22.0 dm3)

Q = 4, 573.2 J.

This is important because it demonstrates the amount of energy that must be supplied in order to keep the parcel of air at a constant temperature as it expands. Without this energy, the temperature of the parcel would decrease as it expands, resulting in a change in its weather patterns.

Hence, the amount of heat needed is: Q = 4, 573.2 J.

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Answer:

Explanation:

The equilibrium constant (Kc) is a measure of the relative concentrations of the reactants and products at equilibrium for a given chemical reaction. It is defined as the ratio of the product concentrations raised to their stoichiometric coefficients, to the reactant concentrations raised to their stoichiometric coefficients. For a general reversible reaction

aA + bB <=> cC + dD

The equilibrium constant is defined as:

Kc = [C]^c [D]^d / [A]^a [B]^b

where [X] represents the concentration of species X (in molarity units), and the superscripts on the concentrations represent the stoichiometric coefficients of the species in the balanced equation for the reaction.

The reaction quotient (Qc) is similar to the equilibrium constant, but it is calculated using the concentrations of the reactants and products at a given point in time, rather than at equilibrium. The reaction quotient is also defined as the ratio of the product concentrations raised to their stoichiometric coefficients, to the reactant concentrations raised to their stoichiometric coefficients, and is calculated using the same equation as Kc, but with the concentrations at a specific point in time, rather than at equilibrium.

Qc = [C]^c [D]^d / [A]^a [B]^b

It can be used to predict the direction of reaction depending on the sign of Qc, Kc.

If Qc < Kc, the reaction will shift in the direction of products.

If Qc > Kc, the reaction will shift in the direction of reactants

If Qc = Kc, the reaction is at equilibrium.

If you want to know more about equilibrium reaction you can check on Le Chatelier's principle.

Different substances have different properties because of the differences in their atomic and molecular structure, bonding types, and strength of their chemical bonds. These differences can be due to the number of atoms, the arrangement of atoms, and the types of electrons involved in the bonding.

The properties of elements and compounds are determined by the types and arrangements of the atoms that make up the substance. For example, water (H2O) and hydrogen peroxide (H2O2) have different properties due to their different molecular structures. Water is made up of two hydrogen atoms and one oxygen atom, while hydrogen peroxide is made up of two hydrogen atoms and two oxygen atoms. may have different characteristics. The strength of chemical bonds between atoms or molecules can be affected by the number and type of electrons involved in the bond. Because of this, some substances are more stable than others and have higher melting and boiling points.

In addition, some properties are also affected by the physical state of the material, such as solubility, density, and conductivity. These properties are determined by the strength of the intermolecular forces between the particles of the substance.

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The student made a mistake because he did not convert a unit of volume from milliliters to liters. After all, molarity is defined as the number of moles of solute per liter of solution.

Answer: C=0.406M.C=0.406M.