Question 5
What's the problem with non-renewable resources?

Question 5 options:

A. They are used at a rate much slower than they are formed.
B. Given enough time, we run out of them.
C. They are easily recycled.

     The largest organ of the body, the skin is composed of water, protein, lipids, and minerals. Your skin controls body temperature and guards against infections.

Answer is C, Human Skin

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Answer:

B potential energy

(kinetic energy is energy that is already moving)

sorry if im wrong

If we run an experiment in which two substances chemically react in a closed system and then we run the same experiment in an open system, then the masses of the products in each experiment will be different because the open system allows the interchange of matter and energy with the media.

An open system is an interrelated group pf parts that work together to interchange matter and energy with the surrounding environment, while a closed system does not generate an exchange of matter and energy.

Therefore, with this data, we can see that an open system interchange energy and matter with the environment, while closes systems do it.

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Barrier that must be overcome before products are formed in a spontaneous reaction is Activation energy barrier.

A spontaneous response is a response that favors the formation of products on the conditions underneath which the response is occurring. A roaring bonfire is an instance of a spontaneous response, in view that it is exothermic (there is a decrease inside the power of the system as energy is released to the environment as warmth).

Maximum spontaneous chemical reactions are exothermic - they release warmness and heat up their surroundings: for instance: burning wooden, fireworks, and alkali metals introduced to water. When a radioactive atom splits up, it releases strength: that is a spontaneous, exothermic nuclear reaction.

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During the cementation phase of lithification, the two minerals that most commonly precipitate into the spaces between clasts, to form cement are Quartz and calcite.

Some sedimentary rocks are "poorly cemented," meaning they could fall apart in your hands. The two minerals that make up the cement in sedimentary rocks most frequently are quartz and calcite. rock with chemical sediments rocks are composed of minerals that accumulated and solidified in water.

Therefore, The lithified counterparts of sediments are sedimentary rocks. They are primarily created by solidifying unconsolidated sediments that already exist via cementing, compacting, and other means.

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Answer:

The electrons surrounding an atom are located in regions around the nucleus called “energy levels”. An energy level represents the 3-dimensional space surrounding the nucleus where electrons are most likely to be. The first energy level is closest to the nucleus.

hope it helps you

Answer: Energy Levels

Explanation: Key Concepts. The electrons surrounding an atom are located in regions around the nucleus called “energy levels”. An energy level represents the 3-dimensional space surrounding the nucleus where electrons are most likely to be. The first energy level is closest to the nucleus.

Mathematically, volume is given by the equation: volume = mass / density. The volume = 13.46 cm³.

Given Mass = 175g

Given density = 13 g/mL

Mathematically, volume is given by the equation:

volume = mass / density.

Where, m be the mass = 175

d be the density = 13

Substitute the value in the above equation, we get

volume = mass / density

= 175/13

= 13.46 cm³

Therefore, the volume of the object exists 13.46 cm³.

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Dispersion Forces are affected by chain length of carbon chain but hydrogen bond is independent of length of carbon chain as it is only related to compound having F,O, and N element.

Intermolecular forces are the forces that are present between the the molecules and elements

Different types of intermolecular forces are

London dispersion forces

Dipole-dipole forces

Hydrogen bonding

London dispersion forces are due to temporary dipoles that is generated by the uneven distribution of electrons in atoms of a compound  or element. It can be made stronger by increasing the number of electrons in the compound.

In our question we are increasing  length of the carbon chain, Which means the number of of electron is increasing and hence the London dispersion forces force is also increasing and hence the boiling point will also increase

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Answer is yes because to say that the tank is half empty would mean that all the oxygen molecules only occupy half or less of the tank.

This is double displacement chemical reaction.

The solutions of soluble salts are blended, a strong may additionally shape. Precipitation reactions are used to make insoluble salts. Magnesium sulfate and sodium carbonate are blended with each other and the insoluble salt shaped is magnesium carbonate.

Magnesium carbonate, also known as magnesite, is a common over-the-counter remedy for heartburn and disenchanted belly as a result of the overproduction of acid inside the belly. Magnesite seems a white, yellowish, grayish-white, or brown crystalline solid or crystalline powder.

A salt  double displacement reaction, every so often called a double displacement response, is a chemical method concerning the change of bonds between two reacting chemical species which ends up within the creation of merchandise with similar or same bonding affiliations.

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ATcase is an allosteric enzyme it has two subunits, one is a catalytic subunit and another one is a regulatory subunit.

What is aspartate transcarbamoylase?

Aspartate carbamoylase is also known by the acronym ATCase. It contains two polypeptides with distinct functions. One is a catalytic unit (carrier carbomylation of the amino group) and the other is a regulatory subunit with regulatory sites. This enzyme catalyzes the formation of N-carbamoylaspartate and inorganic phosphate from carbomoyl phosphate and aspartate. This reaction is the initial step in the synthesis of pyrimidine.

A histidine residue in the active region of aspartate transcarbamoylase is essential for stabilizing the transition state of the bound substrate. In the transition state, the protonated form of histidine stabilizes the negatively charged carbonyl oxygen atom of the scissile bond. Histidine in its deprotonated form inhibits enzyme activity. Therefore, the predicted rate at a pH of 6.5 will be half the maximum and will drop as the pH increases.

Hence, the predicted rate at a pH of 6.5 will be half the maximum and will drop as the pH increases.

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The enthalpy of reaction once you have m, the mass of your reactants, s, the specific heat of your product, and T, the temperature change from your reaction.

Therefore,

Weight water = 348 g

Specific Heat capacity Cp = 2.06 J/g °c

Temperature change ΔT =   127 -103 = 24

Change in enthalpy of the System ΔH = m Cp  ΔT

 = 348 x 2.06 x 24= 17205.12 J.

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The main difference between a recipe for baking a cake and a chemical reaction is that baking a cake is a chemical change whereas a chemical reaction may be a chemical and physical change.

The similarities between a recipe for baking a cake and a chemical reaction is that the molecules react with each other and in both new substances are formed at the end.

When you bake a cake, the ingredients pass through a chemical change. A chemical change occurs when the molecules are rearranged to form a new substance. When you start baking, you have many ingredients. Baking a cake is a chemical change because the ingredients rearrange to form a new substance which is not reversed. The sugar, flour, and eggs can't be separated from each other. The properties of the materials have changed so it is considered as a chemical change.

So we can conclude that baking a cake and a chemical reaction is different due to the presence of chemical change whereas chemical reactions have both chemical and physical change. The similarity between a recipe for baking a cake and a chemical reaction is that in both new substances are formed at the end.

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The items of personal protective equipment (PPE) you will likely use in a general chemistry lab include a coat, goggles, and gloves.

A lab is an area where different samples of blood, urine, and tissues are identified and tested for research and medical purposes.

In a standard lab, various laser equipment and hazardous chemicals are present that can be harmful at times.

Lab safety rules must be followed to avoid unwanted events happening.

For safety concerns, wear personal protective equipment such as goggles, lab coats, and gloves.

Besides this, dress properly does not go alone in the lab, avoid drinking and eating food, don't taste or smell anything and wash your hands before leaving your workplace.

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PF5 molecule is predicted to have a molecular geometry that is trigonal bipyramidal.

You may recognize PF5 on a VSEPR chart as a compound with a trigonal bipyramidal molecular structures once you know it has five electron pairs. The equatorial-equatorial bonds are 120 ° distant from one another, while all other bond angles are 90 °, giving it a total of two bond angles of 90 ° and 120 °.

Valence shell electron pair repulsion is the name given to the underlying concept in molecular structures (VSEPR). In essence, it states that because electron pairs are made up of negatively charged particles, they are attracted to one another and try to keep as far apart as possible.

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Answer:

30 neutrons

Explanation:

neutrons = atomic mass - atomic number

neutrons = 56 - 26 = 30

Yes, the photoelectron spectra (C, N, O, F, Ne) suggest a need to refine shell model of atom.  the another model that provides a better explanation of this data is

The PES data for n=2 we are getting 2 different peaks for elements C, N, O, F, N . That led to the concept of introduction of   existence subshells   within the shell of an atom. one peak for n=1 one indicates there is one subshell that is donated by 1s-subshell .Maximum capacity of accommodating electron in 1s-subshell is 2.    2 different peaks for elements C, N, O, F, N means for n=2 we have two different subshells .These are donated by 2s and 2p.Maximum capacity of accommodating electron in 2s-subshell is 2 and that in 2p is 6.

The relative energy of electrons in atoms and molecules are measured experimentally using a method called photoelectron spectroscopy (PES). PES is frequently used by scientists to evaluate molecular bonding or to investigate the elemental composition of materials. However, in this article, we'll utilize PES to further our understanding of atomic structure. By examining PES data for pure samples of elements, we'll show how photoelectron spectroscopy directly supports ideas like electron shells and subshells, arrangements of electrons, and more.

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"formaldehyde"

A naturally occurring organic substance with the chemical formula CH2O and the structural formula HCHO is formaldehyde. The pure substance, which is a strong, colorless gas that spontaneously polymerizes into paraformaldehyde, is kept in an aqueous solution that is also employed to preserve animal specimens.

At room temperature, volatile organic compounds (VOCs), which are organic chemicals, have a high vapour pressure. The ratio of the sample's molecule in the surrounding air, or volatility, is correlated with low boiling point with high vapor pressure.

Along with being pollutants, VOCs are also responsible for smells and perfumes' odor. VOCs are crucial for interaction among animals and plants, acting as attractants for pollinators, predator defense, and even interactions between individual plants. Some VOCs are harmful to the environment or pose a risk to human health. Laws are in place to control anthropogenic VOCs, especially indoors where concentrations are highest. Although the majority of VOCs are not immediately harmful, they may have long-term, chronic health impacts.

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The half-life of the first-order reaction is 1019.12 seconds.

Calculation:-

T1/2 = 0.693 /K.

K = 6.8 × 10⁻⁴ s⁻¹

T- half = 0.693/6.8 × 10⁻⁴ s⁻¹

          = 1019.12 second.

A first-order reaction is a reaction that proceeds at a price that relies linearly on the simplest reactant concentration.

The half of-existence of a chemical reaction may be described because of the time taken for the concentration of a given reactant to attain 50% of its preliminary awareness. It is miles are denoted via the image t1/2 and are generally expressed in seconds.

The time required for one 1/2 the atoms of a given quantity of a radioactive substance to crumble. Pharmacology. the time required for the hobby of a substance taken into the frame to lose one-half of its initial effectiveness.

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Answer:

love me and I have a good day for the next few months later they are you going for it is a great deal to the world is the only way I have to the only way I can get a

A mole is 6.02214076 × 10²³ of any chemical unit, including atoms, molecules, ions, and others. The sample at STP has the same number of atoms as 18 liters of Ne(g) at STP is 18 liters of Ar(g).

A mole is 6.02214076 × 10²³ of any chemical unit, including atoms, molecules, ions, and others. Due to the large number of atoms, molecules, or other components that make up any substance, the mole is a useful measure to utilize.

Number of moles = Mass of substance / Mass of one mole.

The amount (n) of a substance is directly proportional to the volume, according to Avogadro's law (V).

Since the number of atoms in both samples is the same, n1/v1 = n2/v2 and n1 = n2.

v1 = v2 and n1/v1 = n1/v2

Therefore, the correct answer is option (B) 18 liters of Ar(g).

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Answer: In any chemical change, one or more initial substances change into a different substance or substances.... According to the law of conservation of matter, matter is neither created nor destroyed, so we must have the same number and kind of atoms after the chemical change as were present before the chemical change.

Explanation:

A)compute the mole of AgNO3 first.

volume, when V=1.92 L

use:

amount of mole,

n = Volume * Molarity

  = 0.18*1.92

  = 0.3456 mole

In light of the balanced equation

AgNO3 = (2/2)*moles of AgCl produced

            = (2/2)*0.3456

           = 0.3456 mole

This is the quantity of AgCl moles.

AgCl molar mass,

MM equals 1*MM(Ag) + 1*MM (Cl)

    = 1*107.9 + 1*35.45

    = 143.35 g/mole

use: volume of AgCl,

M = Molar Mass * Molar Number

   = 1.434*102 mole/mole x 0.3456 mole

   = 49.54 g

Response: 49.5 g

B)Here: AgNO3 = M=0.18 M

V(AgNO3)=1.92 liters

V (MgCl2) = 3.83 L

A balanced response states:

1 mole of AgNO3 = 2 mole of MgCl2, and vice versa.

2*M(MgCl2)*V = 1*M(AgNO3)*V(AgNO3) (MgCl2)

1*0.18*1.92 = 2*M(MgCl2)*3.83

0.0451 M (MgCl2)

Response: 0.0451 M

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Sodium and potassium are in the same group because they're both transition metals. Transition metals have a number of properties that make them useful for certain situations. They're reactive, which means they can be easily manipulated. They tend to be abundant, which makes them useful for industrial purposes. And they can form different compounds with each other, which means that when you add them together, you get something new altogether.

This also means that sodium and potassium react with each other easily: in a reaction between the two of them, their electrons leave their outer shells and combine with an electron from another atom or molecule (in this case water). This leaves the atoms with unpaired electrons—which are highly reactive—and creates an energy-rich compound called an ionic bond.

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When a tree is growing on a rock its weight can crush the rock, as a form of mechanical weathering is not a way trees are considered to affect weathering

Weathering is a process that breaks down or disintegrates the rocks which are present on the surface of our planet. Biological life can also affect weathering in many ways.

Tree roots can grow through rock cracks causing the cracks to expand. Sprouts can start to grow near cracks in rocks. The sprout when it grows would start to put pressure on the rocks by the roots that would penetrate them and also by the weight it exerts when it turns to a tree.

Tree’s roots (and other vegetation) can release acids that can cause weathering of rock. Plants are capable of producing acids to protect themselves against invaders like microbes and insects. When plants release acids, it would change the chemical composition of the rock that would eventually break the rock. This type of weathering is called chemical weathering

Trees (and other vegetation) when decomposing can cause chemical weathering. When trees decompose it could produce acids like carbonic acid that would help in disintegration of rocks.

When a tree is growing on a rock its weight would not directly crush the rock, as a form of mechanical weathering. Rocks with crack would be the main source of mechanical weathering by rocks.

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Ionic bonds are formed between a metal and non-metal  by losing electron from the metal. Daily life examples of ionic compounds are table salt, baking soda, Epsom salt etc.

Ionic compounds are inorganic compounds with strong ionic bonds formed between a metal and non-metal.

When an electropositive atom donates its electron into an electronegative element, there creates an intermolecular force of attraction. The bonded electron are pulled towards the electronegative element.

We have everyday examples of ionic compounds such as table salt, Epsom salt, baking soda or sodium carbonate etc. Table salt that is sodium chloride or NaCl we use it every day is an ionic compound.

The metal sodium donates it electron to chlorine creates the ionic bond in NaCl. Similarly in sodium carbonate and sodium bicarbonate, ionic bonds  are formed between sodium metal and carbon.

Therefore, we can find more compounds and models for ionic bonding in daily life such as salt, baking soda etc.

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Answer:

Compound

Explanation:

A substance that consists of two or more types of atoms which have been combined chemically is a compound.

Because water is a polar molecule and carbon dioxide is a nonpolar molecule, water has a greater boiling point than carbon dioxide. Since polar molecules have greater intermolecular interactions than nonpolar ones, polar molecules like water require more energy or heat to disintegrate.

It is highly challenging to break the bonds that make up the massive water molecule due to its substantial hydrogen bonding.

The temperature at which a chemical's vapor pressure equals atmospheric pressure is known as the boiling point.

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