the following metal specimen was tensile tested until failure. which type of metal would experience this type of failure?

The summary of the paragraph is that if you live on a high latitude there would be greater seasonal variation.

The equator is said to be that imaginary line that does divide the earth into the Northern and the southern Hemispheres. This implies that the equator is the line that divides the earth into to halves and the two haves of the earth are responsible for the variations in many things on earth such as the day and night experience.

We can see from the passage that if you are living in a position that is closer to the equator then it follows that the variation of day and night would have less difference as well as less of seasonal differences.

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The net ionic equation for the reaction that occurs NO2-  + H3O+ = HNO2 + H2O

If HCl is added, then it reacts with the conjugate base of HNO2 means NaNO2.

The ionic equation via breaking all the soluble ionic compounds (the ones marked with an (aq)) into their respective ions. every ion has to be shown with its price and an (aq) to reveal that its miles are present inside the answer. Use coefficients to reveal the variety of every ion present.

A molecular equation is an equation wherein the formulation of the compounds is written as though all materials exist as molecules. An ionic equation is one wherein dissolved ionic compounds are proven as loose ions. Examples of molecular and ionic equations are proven.

Ionic equations and internet ionic equations are usually written most effectively for reactions that arise in answer and strive to show how the ions present are reacting.

If NaOH is added then it must react with the weak acid HNO2.

Thus, the net reaction contains NaNO2.

NaNO2 + HCl =  HNO2 + NaCl

The ionic equation will be:

NO2-  + H3O+ = HNO2 + H2O

(because it is given to use H3O+ instead of H+)

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This is an example of positive feedback regulation.

A change in a particular direction causes an additional change in the same direction. For example, if the concentration of a substance increases, a feedback of continuously increasing concentration will occur.

A positive feedback loop occurs in nature when a product of a reaction leads to an increase in that reaction. Considering a system in homeostasis, a positive feedback loop pushes the system away from the goal of equilibrium.

Example of Positive Feedback Loops

The feedback loop possess two major forms: (1) positive feedback and (2) negative feedback. They work simultaneously to maintain body equilibrium under different conditions.

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HCl can be added to separate benzylamine from the toluene mixture.

A widely used method of separating two liquids from each other or popularly called liquid-liquid extraction is being implemented here.

The knowledge of pH values helps in treating the contents of the solution that is to be extracted and their subsequent isolation as well Here, the concept of acid-base extraction is applied to understand that the separation of benzylamine which is an organic base can be done by extracting it by adding HCl to the solution. The addition of hydrochloric acid leads to the formation of a corresponding ammonium salt, the amine can be later recovered by adding a base thereby converting the formed compound back to benzylamine.

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The  5  major parts of the long bone are :

.The  Proximal epiphysis

. The distal ephiphysis

.The compact bone

.The Diphysis

.The metaphysis.

What are long bones?

They are long, wide, and cylindrical in shape. They act as levers. e.gFemur, tibia, fibula, metatarsals, humerus, ulna, radius, metacarpals, and phalanges.

The five major parts of a long bone

.The  Proximal epiphysis: This is made up of the spongy bone and articular cartilage.

.The distal epiphysis: This is enclosed by a membrane of connective tissue called the periosteum.

.The metaphysis: This is made up of an epiphyseal line and red bone marrow.

.The Diphysis: This is found in the medullary cavity which has an inner core of bone marrow. It contains nutrients and helps in the formation of cells, made up of yellow marrow in the adult and red marrow in the child.

.The compact bone: This is the outer shell of the long bone is made of cortical bone called compact bone.

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Fermentation products can include commonly known compounds such as lactic acid and ethanol, but many other products like butanol, acetic acid, and succinic acid are also possible because, these products arise to complete catabolism of glucose and regenerate NAD+ from NADH.

What is Fermentation?

It is an anaerobic process in which energy can be released from glucose even if oxygen is not available.”

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Answer:

25

E

12

Explanation:

As shown in the pic

Mass number = 12 + 13 = 25

Atomic number = No of protons = 12

The mass of hydrogen necessary to react with 50.0g of nitrogen in the reaction of ammonia is 10.8g.

What is ammonia?

Ammonia is a colorless gas which when dissolved in water readily gives ammonium hydroxide which causes irritation. It can also be used as cleaning agent also it is a pungent gas composed of hydrogen and nitrogen.

According to the given equation of ammonia formation,

N2 + 3H2 -------> 2NH3

there is 1 mole of nitrogen reacting with 3 moles of hydrogen to give 2 moles of ammonia. In terms of mass, 28.01g of nitrogen needs 3 moles of hydrogen that is 6.048g of hydrogen.

We can say that,

28.01g of N2 requires 6.048g of hydrogen,

1g of N2 requires = 6.048 / 28.01 = 0.048g

50g of N2 requires = 0.048 x 50.0 = 10.8g of H2.

Therefore, 10.8g of H2 is required to react with 50.0 g of N2 to make ammonia.

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Answer:

its a

Explanation:

10.8 g H2

Answer: The concentrations of the products and

reactants are equal.

Explanation:

A concept can help you translate solutions and related data into basic themes is a false statement.

Basic Concepts are those nouns, verbs, and prepositions that let us understand and describe the world. In the context of the home, kindergarten, and school, these ideas are typically learnt as an essential component of the process of language acquisition.

Therefore, note that Action research is the process of carrying out research and turning the results into useful information that practitioners can use to solve issues and boost organizational effectiveness.

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A concept can help you translate solutions and related data into basic themes. True or false

1s²2s²2p⁷3s²3p⁴ two of the following electronic configurations (in quantum mechanical notation) are not reasonable.

The correct option is B.

Using subshell labels, the electronic structure of an atom is described. These labels include the subshell name, which is determined by the azimuth and elevation quantum number, the shell number, which is determined by the main quantum number, and the total quantity of electrons in the subshell, which is indicated in superscript.

An atom's electron configuration describes how its electrons are dispersed across its orbits (shells) and subshells. An atom's electron configuration is crucial because it aids in predicting a substance's chemical, physiological, electrical, and magnetic characteristics.

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Answer: The s-cis conformer of 1,3-butadiene is less stable than the s-trans conformer as in the s-cis conformer both the CH2 C H 2 groups are facing in the same direction resulting in a sterically crowded structure that leads to repulsion between the hydrogen atoms attached to C1 and C4

Explanation:

the mole fraction of the total ions in an aqueous solution prepared by dissolving 0.400 moles of caf2 in 850.0 g of water. is 0.00840 moles

The calculation of the mole fraction is as follow:

As we know that

Molar mass = Number of grams ÷ number of moles

Or

number of moles = Number of grams ÷ molar mass

from the question

Number of moles of CaI2 = 0.400

And, Molar mass of water = 18.0 g/mol

Now we can calculate  the  moles of water is

= 850.0 g ÷ 18.0 g/mol

= 47.22 mol

And, Total number of moles is

= 0.400 + 47.22

= 47.62

So, Mole fraction of CaI2 is

= 0.400 ÷ 47.62

= 0.00840 mole

hence, the mole fraction of the total ions in an aqueous solution prepared by dissolving 0.400 moles of caf2 in 850.0 g of water. is 0.00840 moles

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The number of protons, electrons, and neutrons are 55 p+ 55 e- 55 n. They are subatomic particles in the element. They can be calculated from the atomic number and the mass number.

Every element has a mass number and an atomic number. The number of protons, electrons, and neutrons can be calculated from the mass number and the atomic number.

If given

How many protons, electrons, and neutrons?

Number of protons

= atomic number

= 55

Number of electrons

= atomic number - ion

= 55 - 0

= 55

Number of neutron

= mass number - atomic number

= 110 - 55

= 55

Hence, the number of protons, electrons, and neutrons are 55 p+ 55 e- 55 n.

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The wavelength of a radio wave having a frequency is 0.8m.

Radio waves are the longest waves in the electromagnetic spectrum. These waves are a form of electromagnetic radiation with frequencies ranging from 300 GHz to 3 kHz, but above 3 GHz are defined as microwaves. Wave frequency is the number of waves passing through a fixed point in a given time.

calculation:-

frequency = 3.75 x 10^7 Hz?

f = wavelength / speed of light

wavelength = c/f

= 3 × 10^8 / 3.75 x 10^7 Hz

= 0.8 m.

Frequency is the rate at which the current changes direction per second. It is measured in hertz an international unit of measurement where one hertz equals one cycle per second. To calculate the frequency of a wave, divide the velocity of the wave by the wavelength. Write your answer in Hertz or Hz which is the unit for frequency. If you need to calculate the frequency from the time it takes to complete a wave cycle or T the frequency will be the inverse of the time or 1 divided by T.

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The root mean square speed of O₂ gas molecules under the same conditions is 521.04ms⁻²

Kinetic energy is the energy an object has because of its motion

Here given data is

He gas = 6950 j/mol

We have to find root mean square = ?

So the formula is to find root mean square is

Vrms = √RT/m

Vrms = RMS velocity of the gas

T = absolute temprature of the gas

M = molar mass of the gas

R = universal gas constant

So, average molar kinetic energy of gas

E = 1/2 mv²rms = 1/2 RT

This equation reveal that molar KE is independent of the nature of the gas and it only depends on temprature as ideal behavior is concerned and so both He and O₂ will have same KE = 6950 j/mol and under the same condition of temprature

So for O₂

1/2 m O₂ V²rmsO₂ = 6950 j/mol

Taking atomic mass of O₂ = 16g/mol

V²rmsO₂ = 6950 × 2/2×16g/mol

VrmsO₂ = √69500000/16g/mol

VrmsO₂ = 521.04ms⁻²

Root mean square speed of O₂ gas molecules is 521.04ms⁻²

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If a gas had an initial temperature od 20.65 C and a final temperature of 41.77 C, its initial volume would be 7.979.

The volume of any solid in three dimensions is equal to the area it occupy. These solids include shapes like a cube, cuboid, conical, cylinder, and sphere. The form affects how much volume there is.

The space occupied by the gaseous particles under typical pressure and temperature circumstances is referred to as the volume of gas. It has the symbol "V." The symbol for volume in the SI is "liters," or "L". When the gas is at normal temperature, a mole has a volume of 24 m3, or 24 000 cm3. The molar volume of a gas is this quantity.

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The correct numbers of subatomic particles for a neutral atom of helium are C)  Two protons, two neutrons, four electrons

What are subatomic particles ?

Any of the multiple self-contained units of matter or energy that are the building blocks of all matter are considered subatomic particles, also known as elementary particles. They include the heavier constituents of the small but extremely dense atom's nucleus, the positively charged protons and the electrically neutral neutrons, as well as the electrons, the negatively charged, nearly massless particles that still make up the majority of the atom's size. The only known subatomic particles, however, are not these fundamental atomic building blocks.

These particles are frequently referred to as subatomic particles since they are the building blocks of atoms. There are protons, neutrons, and electrons, three types of subatomic particles. Protons and electrons, two of the subatomic particles, each have an electrical charge of one or the other.

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The wavelength of the photon required to excite this molecule from its ground state, to its first excited state is 1240 nm.

This is given by the equation:

wavelength = hc/(E_homo - E_lumo)

where h is Planck's constant =6.626070 * 10^-34 J.m , c is the speed of light = 3.0 x 10^8 m/s^2, and E_homo and E_lumo are the energies of the highest occupied molecular orbital and the lowest unoccupied molecular orbital, respectively.

In this particular case, the wavelength of the required photon would be:

wavelength = hc/(-2.42 hartree - 0.65 hartree)

= 6.626070 * 10^-34 X 3.0 x 10^8 / (-3.07)

= 1240 nm

Hence , The wavelength of the photon required to excite this molecule from its ground state, to its first excited state is 1240 nm.

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The volume (in ml) would we expect to use for our third trial with 2.0453 g of KHP will be 33.0 ml

Molarity of NaOH = 0.30 molar

Mass of KHP = 2.0353 G

Molar mass of KHP = 204.2 g/mol

Volume of NaOH = ?

First we will find out the number moles of KHP

number of moles = mass / molar mass

number of moles of KHP = 2.0453 g / 204.2 g/mol

number of moles of KHP = 0.010 mol

Now we will find out the volume of NaOH

volume = number of moles / molarity

volume of NaOH = 0.010 mol / 0.30 M

volume of NaOH = 0.033 L

Conver L to ml

volume of NaOH = 0.33 L * 1000

volume of NaOH = 33.0 ml

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Answer:

2Li3PO4(aq) + 3Ca(C2H3O2)2(aq)

- - - > Ca2(PO4)2(s) + 6LiC2H3O2(aq)

Potassium is the element that has the ground state electronic configuration, 1s22s22p63s23p64s1.

The electronic configuration describes the distribution of electrons in their atomic orbital. In an electronic Configuration, subshells that contain electrons, and the total number of electrons in each of the subshells are written in a sequence.

It is used to find out the valency of an element, Predict the properties of a group of elements and Interpret atomic spectra.

The subshells are s, p, d, and f and the total number of electrons that they can hold is 2, 6, 10, and 14 respectively.

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Answer:

About 0.965 mol Na

Explanation:

The substance with the highest specific heat value will have the highest increase in temperature.

What is a chemical reaction ?

Chemical reaction, the process by which one or more substances (reactants) are transformed into one or more other substances (products). Substances are either chemical elements or compounds. Chemical reactions rearrange the constituent atoms of reactants to produce different substances as products.

Chemical reactions are  part of technology, culture, life . Fuel combustion, glass and pottery making, beer , and wine and cheese making are few examples. Activities involving chemical reactions that have been around for thousands of years. Chemical reactions are abundant in a variety of complex processes occurring in the Earth's geology, atmosphere and oceans, and in all biological systems.

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The idea that younger rock layers are deposited on top of older rock layers in an undisturbed section of sedimentary rock can best be explained by the principle of superposition.

Principle of superposition is the major principle of geography. The oldest layer of the rock is consider as a base rock. after the oldest layer the layered formed are in ascending order of younger layer. so, from this principle we can younger and older one.

Thus, The idea that younger rock layers are deposited on top of older rock layers in an undisturbed section of sedimentary rock can best be explained by the principle of superposition.

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The petal of rose has different kinds of pigments like anthocyanins, carotenoids which give them the colors.

What are Anthocyanins?

Anthocyanins are the pigment that produces red color in the roses. They belong to Flavonoids family.

The pigments in a rose's petals give it its color. These pigments mostly consist of carotenoids and anthocyanins. Bright yellow, orange, and red pigments like those in lemons, oranges, and tomatoes are made by carotenoids. They are contained in structures called plastids, which are a component of the cytoplasm of plant cells. They are therefore steady and largely unaffected by the environment or the health of the plant. Deep red, magenta, purple, and blue colors are made of anthocyanins. They are transported via the sap of the plant and are water soluble. They are far less stable and more susceptible to external variables because they are in a fluid environment.

According to research, a bloom's anthocyanin content and sap pH fluctuate as a flower develops from a bud to a bloom. The pH of the sap increases with bloom aging and anthocyanin content decreases. As those who grow hydrangeas are aware, more acidic conditions prefer the pink/red end of the color spectrum while high alkaline levels produce blue colorations. As a result, as your rose bloom ages and its pH rises, the red will tend to lean toward the darker, bluer side of the spectrum. When a flower is in bloom, anthocyanin levels are still high, but they start to drop off swiftly as the blossom fades.

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By halogenating an alkane, it is feasible to produce high yields of 1-chloro-2,2-dimethylpropane. Therefore, following radical halogenation of the parent alkane, only one monohalo isomer is feasible.

A double-branched chain alkane containing five carbon atoms, neopentane is also known as 2,2-dimethylpropane. Neopentane is a flammable gas at ambient pressure that, on a chilly day, in an ice bath, or when compressed to a higher pressure, can condense into a highly volatile liquid known as dimethylpropane. In organic chemistry, an alkane is an acyclic saturated hydrocarbon, sometimes known as paraffin (a historical quaint word that also has various meanings). In other terms, an alkane is made up of carbon and hydrogen atoms that are all grouped in a tree form.

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Answer:

31.2 moles of O2

Explanation:

You have to do stoichiometry to convert moles of NaClO4 to moles of O2.

You have 15.6 moles of NaClO4, you need these to cancel out so you use your coefficient from the equation. Since you are trying to find moles of O2 you put your coefficient of oxygen in the numerator. Multiply across the top & divide by the bottom to get 31.2 moles of O2.

[tex]\frac{15.6 mol NaClO4}{1} * \frac{4 mol O2}{2 mol NaClO4}[/tex]

Answer:

1.water  2. air 3.aluminum  4.steel 5.iron  6.silver 7.gold

Explanation:

The density of iron is = 7.86 g/mL

The density of gold is  = 19.3 g/mL

The density of steel  is = 7.8 g/mL

The density of water is  = 1.00 g/mL

The density of air  is = 1.29 g/mL

The density of silver is = 10.5 g/mL

The density of aluminium is  = 2.70 g/mL

so..

water < air < aluminum < steel < iron < silver < gold