what is the iupac name for the following compound? 1,2-bromocyclopentane b) (1r, 2s)-1,2-dibromocyclopentane c) (1s, 2s)-1,2-dibromocyclopentane d) (1s, 2r)-1,2-dibromocyclopentane e) (1r, 2r)-1,2-dibromocyclopentane

Lithium and sodium lithium is more negative electron affinity and magnesium and sulfur then sulfur is more negative electron affinity and nitrogen has lower electron affinity and chlorine has more negative electron affinity

Non metal like to gain electron to form anion to have a fully stable octet and they release energy means exothermic and to gain electron to form an anion and thus electron affinity of nonmetal is higher than that of metal

Lithium and sodium that is any lithium is more negative electron affinity and this is because lithium is smaller in size in that of any right due to one  share of which strong interaction between nucleus and extra electron uppers and then magnesium and sulfur are both located in the same row in the periodic table and as general rule electron affinities for main group element become more negative moving right across a period and therefore sulfur is expected to have the more negative electron affinity and nitrogen has lower electron affinity than its preceding element carbon and the chlorine atom has more negative electron affinity which means that it will release more energy when it accept more electron

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Based on the molarity and volume of the solution the mass of Li₂O obtained if 2.00L of a 0.032M Li2O solution has all the water evaporated is 1.92 g.

The number of moles of Li₂O present in 2.00 L of a  0.032M Li₂O solution is determined using the formula below:

Hence;

Number of moles = molarity * volume in liters

Molarity of the Li₂O solution = 0.032 M

Volume of solution = 2.00 L

Number of moles = 0.032 * 2.00

Number of moles of Li₂O = 0.064 moles

Molar mass of  Li₂O = 30 g/mol

Mass of  Li₂O obtained = 0.064 * 30

Mass of  Li₂O obtained = 1.92 g

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Answer: 10s

Explanation:

Ideal gas law is valid only for ideal gas not for vanderwaal gas. To solve such, we need to know the relation between rate of effusion and molar mass of gases. Therefore, the same volume of helium to pass through the hole under the same conditions will be same.

Ideal gas equation is the mathematical expression that relates pressure volume and temperature.

Mathematically the relation between rate of effusion of gases and their molar masses can be given as:

rate of effusion of unknown gas/rate of effusion of methane gas=√molar mass of methane/molar mass of particular gas

The same volume of helium to pass through the hole under the same conditions will be same according to  grahams law of diffusion.

Therefore, the same volume of helium to pass through the hole under the same conditions will be same.

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The age of the rock is 6 million years.

What is a half-life of an isotope?
A radionuclide's half-life is the amount of time it takes for half of its radioactive atoms to decay.

Do all isotopes have a half-life?
All isotopes have a half-life if proton decay is real, but those that are stable in a universe without proton decay will simply live a lot longer than the others.

Why are isotopes measured in half-lives?
Due to an isotope sample's exponential rate of decay over time, the half-life is used as a practical measurement. In a fixed amount of time, each atom is given the same chance of decaying, which causes exponential decay.

Age=4 half lives * 1.4MY/half life

Age=6 million years.

Thus, the age of the rock is 6 million years.

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We know; Neurons communicate using both electrical and chemical signals.

What is neuron?

The basic building blocks of the brain as well as nervous system are neurons. They are the cells that receive sensory information from the outside world, send motor commands to our muscles, as well as transform and relay electrical signals at each stage along the way. Beyond that, our interactions with them shape who we are as people. However, our approximately 100 billion neurons can interact closely with other cell types that are generally referred to as glia. Neurogenesis, which can occur in adults, is the process of the brain producing new neurons. Consider a neuron as a tree for an effective analogy. Dendrites, axons, and the cell body, or soma, are the three main components of a neuron.

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Your experiment would not work because Taq polymerase needs a tiny bit of DNA to add bases to. Due to the lack of an enzyme that could add new nucleotide bases, your process would not succeed.

The primers are absolutely necessary for a PCR reaction to work. The RNA primers must anneal before the heat-resistant DNA polymerases may start replicating DNA. The DNA polymerase cannot work without the primers, and as a result, no product will be produced.

DNA polymerase requires a primer on which it may add the first nucleotide since it can only add a nucleotide onto an already-existing 3'-OH group. This prerequisite allows the researcher to identify a particular area of the template sequence that they want to amplify.

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It covers 6 elements, from boron to neon. Boron is in group 13, carbon in group 14, nitrogen in group 15, oxygen in group 16, fluorine in group 17 and neon in group 18. Subshell is being filled while moving across these elements is p subshell with maximum number of electrons this subshell can hold to 6 electrons

Different subshells hold a different maximum number of electrons. Any s subshell can hold up to 2 electrons; p subshell up to 6 electrons; d subshell up to 10; and f subshell up to 14.

The atomic number of boron is 5. Here is the electronic configuration:

B₅ = 1s² 2s² 2p¹

The atomic number of carbon is 6. Here is the electronic configuration:

C₆ = 1s² 2s² 2p²

The atomic number of nitrogen is 7. Here is the electronic configuration:

N₇ = 1s² 2s² 2p³

The atomic number of oxygen is 8. Here is the electronic configuration:

O₈ = 1s² 2s² 2p⁴

The atomic number of fluorine is 9. Here is the electronic configuration:

F₉ = 1s² 2s² 2p⁵

The atomic number of neon is 10. Here is the electronic configuration:

Ne₁₀ = 1s² 2s² 2p⁶

It can be seen that each electron configuration is embedded with a 2p subshell with maximum number of electrons this subshell can hold to 6 electrons.

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Density is different from the rest based on those two categories. density is a physical property.

Physical properties can be observed or measured without changing the composition of matter. Physical properties are used to observe and describe matter. Two types of it intensive and extensive properties. This classification relates to the dependency of the properties upon the size or extent of the system or object in question.

An intensive property is a bulk property, meaning that it is a physical property of a system that does not depend on the system size or the amount of material in the system. Examples of intensive properties include temperature, refractive index, density, and hardness of an object.

Chemical properties of matter describes its "potential" to undergo some chemical change or reaction by virtue of its composition. What elements, electrons, and bonding are present to give the potential for chemical change. For example : Metals in general have they chemical property of reacting with an acid.

Flammability - The susceptibility to combustion is a chemical property and the susceptibility to combustion is unknown. Fire tests are performed to determine how difficult or easy it is to burn a particular material.

Heat of Combustion - This chemistry is the amount of energy released as heat when a substance burns with oxygen.

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.

A piano contains both mechanical and acoustic energy. Mechanical energy is created when you press a key; as a result, the strings vibrate when the hammer strikes them, producing sound.

What converts thermal energy to electrical energy?

Using a thermoelectric generator, thermal energy can be transformed into electrical energy.

What is thermal energy?

The term "thermal energy" is used a lot of different ways in physics and engineering. It may be related to a number of different physical concepts.

What is electric energy?

Electrical energy is related to forces on electrically charged particles and the motion of electrically charged particles, frequently electrons in wires.

Hence mechanical and acoustic energy is a correct answer.

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Answer:

Explanation:

Butanoic acid С₄Н₈0₂

M = 4·12 + 8·1 + 2·16 =  88

The empirical formula represents the simplest whole number ratio. The molecular formula of the compound X with a relative molecular mass of 88 is Butanoic acid and the molecular formula is C₄H₈O₂.

The formula in which the actual number of all the atoms of various elements present in one molecule of the compound is represented is known as the molecular formula.

The molecular formula of a compound is a whole number multiple of its empirical formula.

Molecular formula = n × Empirical formula

Here butanoic acid has the molar mass 88.11 g/ mol and its molecular formula is C₄H₈O₂. It is a straight chain alkyl carboxylic acid and it is an oily colourless liquid. It is also used as a food flavoring agent and a safe food additive.

Thus the compound X is Butanoic acid or Butyric acid.

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Season is the northern hemisphere experiencing in the image above is winter

Northern hemisphere is the half of the earth that lies north of the equator and earth tilted axis causes the season and throughout the year different part of the earth receive the sun most direct rays and so when the north pole tilt toward the sun and when its south pole tilt toward the sun its winter in the northern hemisphere and our northern winter is in dec, Jan and Feb

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Gold cannot replace Magnesium from a compound as gold is placed lowest in the reactivity series of metals. It won't even react with the compound let alone replace it. Gold has great ductile strength and malleability.

 Features of Reactivity Series of Metals

Therefore Gold cannot replace Magnesium from a compound as it is the least reactive metal and therefore, comes lower than Magnesium in the reactivity series

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Answer:

2H2O+4NO2+O2=4HNO3

Explanation:

LEFT HAND SIDE(L.H.S)                    RIGHT HAND SIDE(R.H.S)

N=1X10X2  =20                                      N=1X10X2=20

H=2X5X2   =20                                    H=1X10X2=20

O=1X5X2+10X2X2+2 X5                      O=3X10X2=60

   =60

First multiply H2O by 2 to get an even no. of oxygen on L.H.S

make a similar chart at every turn to record the changes in number.

then multiply R.H.S by 2 to equate the hydrogen

multiply N by 2 on LHS to equate them.

the no of O changes

Multiply RHS by 2 again,

equate the LHS by multiplying NO2 by 2 again, i.e total 4

you now have the answer

The balanced equation of the reaction and the reaction types are given below as follows:

a. 2 Na₃N → 6 Na +  N₂ Reaction Type: decomposition reaction

b. H₃PO₄ + 3 KOH →  K₃PO₄ + 3 H₂O Reaction Type: Neutralization reaction

c.  N₂ + 3 H₂ → 2 NH₃ Reaction Type: Synthesis

d. 2 H₂O₂ →  O₂ + 2 H₂O Reaction Type: Decomposition

e. Zn+ 2 HCl → ZnCl₂ +  H₂ Reaction Type: single displacement

f. 2 C₂H₆ +  7 O₂ → 4 CO₂ + 6 H₂O Reaction Type: Combustion

g. CuCl₂ +  H₂S → CuS + 2 HCl Reaction Type: Double displacement

h. 2 N₂ + 5 O2 → 2 N₂O₅ Reaction Type: Synthesis

Chemical reactions are reactions that result in the formation of new substances as a result of chemical changes that occur in the substances undergoing the reaction.

In a chemical reaction, the substances that undergo chemical changes are called reactants while the new substances that are formed are called products.

A balanced equation of a chemical reaction is one in which the moles of atoms of reactants are equal to the moles of atoms of the products involved in the reaction.

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Quantum mechanics, although mathematically complex is 4

What is quantum number ?

A total of four quantum numbers are used to fully describe the motion and trajectory of each electron in an atom. The combination of  quantum numbers of electrons is described by a wavefunction corresponding to the Schrödinger equation. Each electron has a unique set of quantum numbers. According to  Pauli exclusion principle, no two electrons share the same combination of he four quantum numbers. Quantum numbers are important because they can be used to determine the electron configuration of atoms and the putative positions of atomic electrons. Quantum numbers are also used to understand other properties of atoms such as: B. Ionization energy and atomic radius. Atoms have four quantum numbers.

Principal (n), orbital angular momentum  (l), magnetic  (ml), electron spin  (ms).

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Answer:

Wegener used fossil evidence to support his continental drift hypothesis. The fossils of these organisms are found on lands that are now far apart.

Explanation:

Grooves and rock deposits left by ancient glaciers are found today on different continents very close to the equator.

Other forms of  electromagnetic radiation that could cause ionization are  X-rays and gamma rays

Ionizing radiation is a form of energy that acts generally by removing electrons from atoms and molecules of materials that include air, water, and living tissue etc. Ionizing radiation can travel unseen and can pass through these materials.

Human activities, such as making medical x- rays, generating electricity from nuclear power plants , testing the nuclear weapons, and producing a wide variety of common products such as smoke detectors which usually contains radioactive materials, can cause additional exposure to ionizing radiation as well.

X-rays and gamma rays have enough energy so that during interaction with atoms, they are capable to remove electrons and cause the atom to become charged or ionized. hence we can call them to be ionizing radiation.

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Answer:

NH4/Ammonium

Explanation:

a. In the following list 4s orbital can be filled before 4p orbital.

b. The maximum number of electrons in 4s subshell is 2.

c. An electron in an orbital has 4 quantum numbers n, l, ml, ms.

According to the Aufbau principle, electrons first occupy lower-energy atomic orbitals before moving on to higher-energy ones. Hence 4s orbitals filled before 4p followed by filled d orbitals. similarly the maximum capacity of s subshell to hold electron  is 2, while p subshell is 6, 10 for d subshell and 14 for f subshell. Electron in an orbital can be completely described by principle quantum number n which represents the main electronic shell, Azimuthal quantum number l determines an orbital's shape, magnetic quantum number ml defines how many orbits there are and how they are oriented within a subshell and spin quantum number ms describes the spin of electrons.

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The law of conservation of matter says that in chemical reaction and the statement is the total mass of the product must equal the total mass of the reactant

The law of conservation of mass states that the mass in an isolated system is neither created nor destroyed by chemical reaction or physical transformation and according to the law of conservation of mass and the mass of the product in a chemical reaction must equal to the reactant that means total mass of the product must equal the total mass of the reactant

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28.16 grams of Sodium hydroxide would be required to make 50 grams of sodium sulfate.

The gram is a unit of mass in the International System of Units (SI) which is equal to one thousandth of a kilogram. Gram is something that is related to the mass as well.

Mass is actually the measure of the amount of matter in a substance or any object. The basic SI unit for mass is the kilogram (kg), but usually the smaller masses may be measured in grams (g). To measure mass, you would use a balance or even a scale.

In the above question it is said that 80 grams of Sodium hydroxide reacts with sulfuric acid to produce 142 grams of sodium sulfate. So then to produce 50 grams of sodium sulfate, the amount of Sodium hydroxide will be;

⇒ 80 × 50  = 28.16 grams

      142

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SERCA D351A cannot be phosphorylated by it.

Calcium deficiency can affect every part of the body, resulting in thin, brittle skin, sluggish hair growth, and brittle nails. Calcium has a critical role in both the neurotransmitter release and indeed the contraction of muscles. As a result, persons who are calcium deficient and otherwise healthy may experience seizures.

Too much blood calcium can harm your bones, develop kidney stones, and have an impact on how well your heart and brain work. Usually, parathyroid glands that are overactive lead to hypercalcemia. These four tiny glands are situated near the thyroid in the neck.

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Subatomic particles can usually pass undeflected through an atom because the volume of an atom is composed of mostly space.

The positively charged nucleus of an atom is surrounded by a cloud of negatively charged electrons. The electrons are in constant motion, moving around the nucleus in a random pattern. The size of an atom is determined by the size of this electron cloud. Most of the volume of an atom is actually empty space.

Subatomic particles are usually able to pass through an atom undeflected because they are so much smaller than the atom itself. The nucleus of an atom is only a tiny fraction of the size of the atom, and the electrons are even smaller. Subatomic particles can easily pass through the spaces between the nucleus and the electrons.

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They are just different ways of drawing the same compound, the following pair are diastereomers.

The given pair of compounds are not constitutional isomers, because constitutional isomers have the same molecular formula but different bond connectivity. But the given pair have the same bond connectivity.

The given pair of compounds are stereoisomers because they have the same molecular formula but the 3D space arrangement is different. And finally, the given compounds are not mirroring images of each other so we call them diastereomers, not enantiomers. As enantiomers are superimposable mirror images of each other. The structures of the given pair of compounds are attached as a picture.

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The lac operon is a group of genes that make up an mRNA. These genes are those that allow the consumption of lactose through the proteins of the bacteria, as is the case with E. Coli.

The lac operon is made up of three genes, which constitute the mRNA, that is, the factor responsible for promoting the union and decomposition of lactic acid in bacteria, the process occurs as follows:

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based on their positions in the periodic table, the smaller first ionization energy is calcium

Ionization energy is also called as ionization potential is the amount of energy required to remove an electron from an isolated atom or molecule and by looking at the periodic table the beryllium and calcium are in the same group with beryllium being 2 period above calcium and therefore the calcium has the smaller first ionization energy and first ionization energy of chlorine is 12.9676 eV

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PI2 ≈ 7.4 torrPI2 ≈ 7.4 torrs because it is directly proportional to the initial pressure of HIHI.

At equilibrium, the forward and reverse reactions occur at the same rate. Once equilibrium is reached, the amounts of each reactant and product remain constant. The equilibrium constant equation is a mathematical relationship that describes how the concentrations of products vary with the concentrations of reactants.

The state of a system whose properties are fixed under unvarying external conditions is called the equilibrium state. Chemical equilibria are dynamic in nature because reactants turn into products and products turn into reactants even after equilibrium is reached. However, the speed of forward and backward reactions is the same. Examples of balance include A book placed on the table. A car that moves at a constant speed. A chemical reaction in which the forward and reverse reaction rates are equal.

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Answer: thermal from electrical you would need something to take the heat to electrical energy.

Explanation: it creating heat not  electricity