in a nuclear reactor, uranium fissions into krypton and barium via the reaction. what are the nucleon number a and atomic number z of the resulting krypton nucleus?

Answer:physical change

Explanation:

The corpuscular nature of matter is told by Newton. The theory says of the microscopic structure of matter, tells the behavior of matter.

The corpuscular nature of matter is given by Newton. The matter is made up of small particles, like ions and molecules. Light is composed of tiny particles. Matter can be found everywhere in the Universe. But it can be found in different forms.

Thus, Newton explains the corpuscular nature of matter. According to the hypothesis, a substance's microscopic structure can be used to predict its behavior.

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Answer:

AlCl3 + Fe = Al + FeCl2

Chemical Equation Details aluminum chloride + iron = aluminum + iron(ii) chloride

\(\text{Balanced reaction:}\\\\2\text{Al} + 3\text{FeCl}_2 \longrightarrow 3\text{Fe} + 2\text{AlCl}_3\)

Yes, 1-hexene exhibits cis/trans isomerism. 1-hexene is a type of aliphatic olefin, an unsaturated hydrocarbon

Isomerism refers to a phenomenon where two or more compounds have the same molecular formula but a different structure, resulting in different chemical and physical properties . Isomers may be classified into two types based on the arrangement of atoms within the molecule. They are as follows:      

Cis-isomers:  These isomers have the same functional groups on the same side of the molecule. They have lower boiling points and higher melting points compared to trans isomers.The term "cis" is Latin for "on the same side."

Trans-isomers:  These isomers have the same functional groups on opposite sides of the molecule. They have higher boiling points and lower melting points than cis isomers.The term "trans" is Latin for "across."

1-hexene is a type of aliphatic olefin, an unsaturated hydrocarbon. It is a six-carbon alkene that contains a double bond between carbon atoms one and two (1-hexene). The molecular formula of 1-hexene is C₆H₁₂. 1-hexene has two isomers - cis and trans.  Therefore, it displays cis/trans isomerism.

The hydrogen atoms are on the same side of the double bond. The hydrogen atoms are on opposite sides of the double bond.

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Alkanes are saturated hydrocarbons that have single bonds in chains

General formula for alkanes :

\(\tt \large{\bold{C_nH_{2n+2}}\)

Hydrocarbon combustion reactions (specifically alkanes)

\(\large {\box {\bold{C_nH _ (_2_n _ + _ 2_) + \dfrac {3n + 1} {2} O_2 \Rightarrow nCO_2 + (n + 1) H_2O}}}\)

So that the burning of ethane with air (oxygen):

\(\tt C_2H_6+\dfrac{7}{2}O_2\rightarrow 2CO_2+3H_2O\)

2C₂H₆ (g) + 7O₂ (g) ⟶ 4CO₂ (g) + 6H₂O (ℓ)

or we can use mathematical equations to solve equilibrium chemical equations by giving the coefficients for each compound involved in the reaction

C₂H₆ (g) + aO₂ (g) ⟶ bCO₂ (g) + cH₂O (ℓ)

C : left 2, right b ⇒ b=2

H: left 6, right 2c⇒ 2c=6⇒ c= 3

O : left 2a, right 2b+c⇒ 2a=2b+c⇒2a=2.2+3⇒2a=7⇒a=7/2

The chemical substances in food that contribute to health, many of which are essential parts of a dietary pattern, are called nutrients.

Nutrients are chemical compounds in food that are used by the body to function properly and maintain health.

Examples includes:

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The oxidation half equation is Zn ------> Zn^2+ + 2e while the reduction half equation is Cu^2+  + 2e------> Cu.

A redox reaction is a reaction in which there is a loss/gain of electrons. The specie that gives out electrons experiences an increase in oxidation number while the specie that gains the electrons experiences a decrease in oxidation number.

For the reaction; CuCl2 + Zn → ZnCl2 + Cu

The oxidation half equation is;

Zn ------> Zn^2+ + 2e

The reduction half equation is;

Cu^2+  + 2e------> Cu

The chloride ion is excluded because its oxidation number does not change from left to right in the reaction.

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The proposition p(n) states that if a and b are positive real numbers, then (a b)n ≥ an bn. Evaluating p(1), we need to determine if the inequality holds true for n = 1.

This means that for any positive real numbers a and b, the inequality (a b)^1 ≥ a^1 b^1 (or simply ab ≥ ab) holds.:

The proposition p(n) states that if a and b are positive real numbers, then (a b)n ≥ an bn. To evaluate p(1), we substitute n = 1 into the proposition. Thus, the proposition becomes "if a and b are positive real numbers, then (a b)^1 ≥ a^1 b^1."

Simplifying further, we have "if a and b are positive real numbers, then ab ≥ ab." This inequality is a true statement because the product of two positive real numbers, a and b, is always equal to or greater than their individual products. In other words, the multiplication of positive numbers is commutative, and the order of multiplication does not affect the result.

Therefore, p(1) is true, and it confirms that for any positive real numbers a and b, the inequality (a b)^1 ≥ a^1 b^1 (or simply ab ≥ ab) is valid. This result aligns with the basic properties of multiplication, where the product of two positive numbers remains the same regardless of the order of multiplication.

In conclusion, p(1) is true, indicating that for the given proposition, the inequality holds when n is equal to 1.

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Answer:

K I will attempt

Explanation:

a)

\(O_2_{(g)}+ 2H_2_{(g)} => 2H_2O_{(l)}\\\)

b)

1 : 2 : 2 (I don't know if this is what the question wants but it is what I would answer)

c)

Hydrogen because it requires 2 moles of H2 to react with 1 mole of O2

d)

24 moles of water. Look at stoichiometric coefficient. 2:2 means 24 moles you get 24 moles

e)

Oxygen. 2 < 5/2. Remember, 1 mole of O2 requires 2 moles of H2. But 5/2 is still greater than 2

f)

First, let's find out how many moles of water we can get. Since O2 is the limiting reactant, and O2:H2O ratio is 1:2, we will get 4 moles of H2O. Then, we can multiply 4 by Avogadro's number which is \(6.022*10^{23}\) to get the number of molecules. We get: 2.41 * 10^24 molecules of water.

Answer:

I'ma just take the point thank you very much

Answer:

Explanation:

Here, we want to get the pressure in mmHg

Using the ideal gas equation:

Where:

P is the pressure in atm which we want to calculate (we would convert to mmHg after calculation)

n is the number of moles which is 0.025 mole

T is the temperature in Kelvin which is 350K

V is the volume which is 2L

R is the molar gas constant which is 0.0821 L.atm/mol.K

Substituting the values, we have it that:

Finally, we have to convert this to mmHg

Mathematically:

Answer:

While organic chemistry is defined as the study of carbon-containing compounds and inorganic chemistry is the study of the remaining subset of compounds other than organic compounds, there is overlap between the two fields (such as organometallic compounds, which usually contain a metal or metalloid bonded directly to carbon).

thenks and mark me brainliestt :)) pls

Answer:

copper carbonate reaction is known as the termed of thermal decomposition

reaction

Answer:

i believe it is mass and distance

Explanation:

i hope that was correct, good luck by the way.

Answer:

I think it's mass and distance

Answer:

The Stratosphere and Troposphere

Answer:

trophosphere and stratosphere protect us from ozone rays

Explanation:

The concentration of TCE is 28ppm, convert this to molarity. The molecular weight of TCE is 132g/mole. The molarity of TCE is, therefore, 0.000212 M.

The term ppm stands for parts per million. This term is used to describe the concentration of a substance present in a given solution or mixture. To find the molarity of TCE, the given concentration of TCE in ppm needs to be converted into molarity.

The given concentration of TCE is 28ppm.

1 ppm = 1 mg/L1mg/L = 10^-3 g/L

The molecular weight of TCE is 132g/mole.

Conversion of ppm to g/L is given as follows:

28 ppm = 28 mg/L

=28 x 10^-3 g/L

Number of moles of TCE in 1 L is:

mass of TCE/molecular weight of TCE = 28 x 10^-3/132

= 0.000212 mole/L.

The molarity of TCE is, therefore, 0.000212 M.

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Using the law of the conservation of mass, the reactions can be shown to obey the law.

We need to know what the law of the conservation of mass says so that we can be able to know how we can be able to apply the law in the proper perspective. We have to know that the law says that total mass of the system would remain constant. The implication of this is that the mass before the reaction would be the same as the mass after the reaction. The mass of the substance must be able to add up in the system that is under study as we have one here.

Mass of the iron = 56 g

Mass of the chlorine = 35.5 g

Balanced reaction equation;

\(2Fe + 3Cl_{2} ---- > 2FeCl_{3}\)

This is the  formation of the iron III chloride

Total mass on the right hand side = 2(56) + 6(35.5) = 325 g

Total mass on the left hand side = 2[56 + 3(35.5)] = 325 g

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Noble gases in Group VIII have electron affinities that are close to zero because each atom has a stable octet and does not readily accept an electron.

Both electron affinity and electron negativity have a downward trend over time. The electron affinity is also 0 if the electron negativity is 0. Helium (He), Neon (Ne), Argon (Ar), Krypton (Kr), Xenon (Xe), Radon (Rn), and Oganesson are the elements with no affinity for electrons (Og). Affinities for electrons can be zero, negative, or positive. Noble gases in Group VIII have electron affinities that are close to zero because each atom has a stable octet and does not readily accept an electron. There is no tendency for noble or inert gases to gain an electron. Its electron affinity is therefore zero.

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Answer:

Practice good personal hygiene. Wash your hands after removing gloves, before leaving the laboratory, and after handling a potentially hazardous material. While working in the laboratory, wear personal protective equipment - eye protection, gloves, laboratory coat - as directed by your supervisor.

Explanation:

Answer:

2m.

Explanation:

molality = no.of moles of solute ÷ mass of solvent in kg

molalty = 1.5 moles ÷ 0.75 g

            = 2m

A molecule having four total electron groups around the central atom has three bonding electron groups and one nonbonding electron group. Its molecular structure is trigonal pyramidal.

One or more atoms are joined by covalent (chemical) bonds to form molecules. Atoms can be represented as circles with a nucleus at their center (consisting of protons and neutrons) and one or more concentric circles around them, which represent the "shells" or "levels" in which the electrons surrounding the atom's nucleus are located, along with markings indicating the electron at each level. The lowest unit into which a substance can be divided while still being the same substance is a molecule. It is composed of two or more atoms that are chemically bonded to one another.

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Answer:

A: A system of folded membranes

Explanation:

The endoplasmic reticulum is one of the organelles found in an eukaryotic cell. It is a membrane-bound organelle made up of two structures called CISTERNAE (sac) AND SHEET (membranous)

The endoplasmic reticulum is part of the endomembrane system, which is a system of folded membranes, which extends to the membrane that bounds the nucleus. It is of two types viz: rough endoplasmic reticulum and smooth endoplasmic reticulum.

Answer:

1)  A compound is the chemical combination of two or more elements into a single substance.

An atom is the smallest particle of an element.

2) Elements have only one kind of atom.

Compound always have more than one kind of atom.

Answer:

1) An atom is the smallest possible piece of a chemical element, and a compound can be composed of two or more separate elements

2) An element is made up of only one kind of atom and a compound is made up of two or more kind of atoms

Explanation:

The net ionic equation for the reaction is: H⁺(aq) + OH⁻(aq) → H2O(l)

To write the net ionic equation for the chemical reaction:

HCN(aq) + KOH(aq) → H2O(l) + KCN(aq)

We first start by writing the balanced complete ionic equation, which includes all the species present in the reaction as ions:

HCN(aq) + KOH(aq) → H2O(l) + KCN(aq)

(Complete Ionic Equation)

H⁺(aq) + CN⁻(aq) + K⁺(aq) + OH⁻(aq) → H2O(l) + K⁺(aq) + CN⁻(aq)

In the complete ionic equation, we break down the ionic compounds into their constituent ions when they are in the aqueous state.

Next, we write the net ionic equation by eliminating the spectator ions. Spectator ions are the ions that appear on both sides of the equation and do not participate in the actual chemical reaction. In this case, the K⁺(aq) and CN⁻(aq) ions are spectator ions.

Net Ionic Equation:

H⁺(aq) + OH⁻(aq) → H2O(l)

In the net ionic equation, we remove the spectator ions (K⁺(aq) and CN⁻(aq)) from both sides of the equation, leaving only the ions that are directly involved in the reaction.

So, the net ionic equation for the given chemical reaction is:

H⁺(aq) + OH⁻(aq) → H2O(l)

This represents the actual chemical reaction that occurs when hydrocyanic acid (HCN) reacts with potassium hydroxide (KOH) to form water (H2O) and potassium cyanide (KCN).

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Answer:

im pretty sure its groundwater just read this and see the answer

Explanation:

The ocean holds about 97 percent of the Earth's water; the remaining three percent is found in glaciers and ice, below the ground, in rivers and lakes. Of the world's total water supply of about 332 million cubic miles of water, about 97 percent is found in the ocean.

A precipitation reaction exists in which dissolved substances react to create one (or more) solid products.

A precipitation reaction exists in which dissolved substances react to create one (or more) solid products. Many reactions of this kind concern the exchange of ions between ionic compounds in an aqueous solution and exist sometimes directed as double displacement, double replacement, or metathesis reactions.

A precipitation reaction exists as a chemical reaction happening in an aqueous solution where two ionic bonds integrate, resulting in the construction of an insoluble salt which is named precipitates.

Some examples exist reactions between calcium chloride (CaCl2) and potassium hydroxide(KOH), which result in the appearance of calcium hydroxide which stands as an insoluble salt. The reaction between silver nitrate (AgNO3) and sodium chloride (NaCl), results in the construction of silver chloride (AgCl) exists an insoluble salt.

In an aqueous solution, precipitation stands the procedure of converting a dissolved substance into an insoluble solid from a super-saturated solution. The solid formed exists named the precipitate.

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The mass of unknown radioactive substance will be 69 gram.

When a substance will have unstable nuclei and even the capacity to spontaneously release energy while exchanging fast-moving charged particles in an effort to stabilize, the substance is described as radioactive.

It is known that

\(N/N_{0} = (1/2)^{t/x}\)

where, N = initial quantity, \(N_{0}\)  = quantity remaining, t = elapsed time.

Given that,

N = 38.5 g

t = 3.20 hours

x = 8 hour

\(N_{0}\) = ?

Put the value of given data in above equation.

\(N/N_{0} = (1/2)^{t/x}\)

38.5/ \(N_{0}\)  = 80/32

\(N_{0}\)  = 69 gram.

Therefore, the mass of unknown radioactive substance will be 69 gram.

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The empirical formula of the compound is CH₂O. This means that for every one carbon atom, there are two hydrogen atoms, and one oxygen atom.

To determine the empirical formula, we need to find the simplest ratio of atoms in the compound. We can assume we have 100 grams of the compound, which means we have 54.5 grams of carbon, 9.1 grams of hydrogen, and 36.1 grams of oxygen.

Next, we calculate the number of moles for each element by dividing the mass by their respective molar masses: carbon (12 g/mol), hydrogen (1 g/mol), and oxygen (16 g/mol).

Carbon: 54.5 g / 12 g/mol = 4.54 mol

Hydrogen: 9.1 g / 1 g/mol = 9.1 mol

Oxygen: 36.1 g / 16 g/mol = 2.26 mol

To obtain the simplest whole-number ratio, we divide the number of moles of each element by the smallest number of moles (2.26 mol in this case).

Carbon: 4.54 mol / 2.26 mol = 2

Hydrogen: 9.1 mol / 2.26 mol ≈ 4

Oxygen: 2.26 mol / 2.26 mol = 1

Thus, the empirical formula of the compound is CH₂O, indicating that it contains two carbon atoms, four hydrogen atoms, and one oxygen atom.

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