3. If in an experimental reaction, 32.5 mL were collected of hydrogen gas at 23.5 degrees Celsius and 745.2 torr, what would be the volume corrected to STP conditions

The first ionization energies of the elements increases as you go from left to right across a period of the periodic table, and as you go from the bottom to the top of a group in the table, atomic radius increases.

A chemical element's atomic radius, which is typically the average or typical distance between the nucleus's core and the outermost isolated electron, serves as a gauge for the size of an atom.

There are numerous non-equivalent definitions of atomic radius, since the border is not a clearly defined physical entity.

As we move across a row of the periodic table from left to right, the initial ionization energy rises. In the periodic table, the initial ionization energy falls as we move down a column.

Thus, option A is correct.

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Answer:

Explanation:

4. Reduction reaction as Cu++ is reduced to Cu.

5. Double displacement reaction as the CO3-- replaces 2x OH-

6. Precipitation as two solutions combine to form a precipitate and a secondary product.

Answer:

The first person to use the term "atom" was Democritus.

Answer:

Democritus

Explanation:

Answer:

Down is the recipe for momo..

Explanation:

recipe..

. Sieve the wheat flour carefully to remove lumps.

. Add water and knead the flour well to prepare a dough

. Remove the skin of the boiled potato ,cut into small pieces

. Heat the cooking oil in frying pan, and fry the pieces of onions cabbage green chili tomato pea etc.

. Prepare a mix veg stuffing by mixing potato other vegetables , green coriander and salt.

. Prepare a small balls of dough and roll it out of belna.

. Put 10 gm of mix vegetables stuff in the center of rolled dough and close it from all the sides to make a small ball.

. steam the momo for 10-15 minutes. After that it will be ready to serve.

. A sauce or pickle is usually eaten with momo.

Answer:

Explanation:

Sieve the wheat flour carefully to remove lumps.

Answer:

The correct answer is:

d. Na2S, NaF

Answer:

CO2

Explanation:

The order of decreasing sn² reactivity with NaCN is: bromoethane > 1-chloro-3,3-dimethylpentane > 1-chloro-2,2-dimethylpentane > 2-bromo-2-methylpentane.

The order of decreasing sn² reactivity with NaCN can be determined by looking at the stability of the resulting carbon ion intermediate. The more stable the intermediate, the less reactive the substrate will be. The order from most reactive to least reactive is as follows: bromoethane, 1-chloro-3,3-dimethylpentane, 1-chloro-2,2-dimethylpentane, and 2-bromo-2-methylpentane.

Bromoethane is the most reactive because the resulting carbon ion intermediate is stabilized by the electron-withdrawing effect of the bromine atom. Next, 1-chloro-3,3-dimethylpentane is more reactive than 1-chloro-2,2-dimethylpentane because the bulky methyl groups on the 2 position of the latter substrate cause steric hindrance and reduce reactivity. Finally, 2-bromo-2-methylpentane is the least reactive because the resulting carbon ion intermediate is stabilized by both the bromine atom and the bulky methyl group, making it the most stable of the substrates listed.

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The mass of \(CO_2\) formed from 288 mg of \(O_2\) is 0.792 g. we can use stoichiometry to determine the mass of \(CO_2\) formed from 288 mg (0.288 g) of \(O_2\).

To answer this question, we need to use the balanced chemical equation for the reaction of \(CO_2\) formation:
\(2CO + O_2 --> 2CO_2\)
From the equation, we can see that for every 1 mole of \(O_2\), 2 moles of \(CO_2\) are formed.
First, we need to convert the mass of \(O_2\) to moles using its molar mass:
0.288 g \(O_2\) / 32.00 g/mol = 0.009 moles
Since 2 moles of \(CO_2\) are formed for every mole of \(O_2\), we can use a mole ratio to find the number of moles of \(CO_2\) formed:
0.009 moles \(O_2\) x (2 moles / 1 mole ) = 0.018 moles \(CO_2\)
Finally, we can convert the moles of \(CO_2\) to mass using its molar mass:
0.018 moles \(CO_2\) x 44.01 g/mol = 0.792 g \(CO_2\)

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Answer: D. a mixture

Explanation: When you mix different types of nuts or snacks together including raisins, hazelnuts, almonds, and peanuts to make some kind of trail mix, then you are creating a mixture, specifically a heterogeneous mixture.

Answer:

c

Explanation:

the boiling property

The answer is given below. The reactant particles must collide with each other. The collision between reactant particles must be with sufficient energy to break the existing chemical bonds.

Describe  Law of collision theory?

The collision theory is a chemical theory that explains how chemical reactions occur and what factors affect the rate of chemical reactions. The collision theory states that for a chemical reaction to occur, the reactant particles must collide with each other with sufficient energy and with the correct orientation.

The theory suggests that the rate of a chemical reaction depends on several factors, including the concentration of reactants, temperature, surface area of the reactants, and the presence of a catalyst. According to the collision theory, the more frequently the reactant particles collide and the higher the energy of the collisions, the greater the rate of the reaction.

The theory also states that not all collisions between reactant particles lead to a reaction. Only the collisions that occur with sufficient energy and proper orientation will result in the formation of products. If the collisions do not have enough energy or are not in the correct orientation, the reaction will not occur or will proceed at a much slower rate.

Overall, the collision theory provides a framework for understanding the factors that affect chemical reactions and how they occur at the molecular level. It is widely used in the field of chemistry to design and optimize chemical reactions, and has provided insights into the fundamental mechanisms of many chemical reactions.

According to collision theory, the essential qualifications for a reaction to occur and form products are:

The reactant particles must collide with the proper orientation for the new chemical bonds to form.

Therefore, in order for a chemical reaction to take place and products to be formed, the reactant molecules must collide with enough kinetic energy and proper orientation to break the existing bonds and form new bonds. If the reactants do not have enough energy or do not collide with the proper orientation, the reaction will not occur or will proceed at a much slower rate.

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By measuring the mass of the reactants and the product and computing the mole ratios of the components, a combustion reaction experiment can be used to obtain the empirical formula for magnesium oxide.

The experiment was successful in establishing the proper ratio of magnesium to oxygen atoms in the molecule if the computed empirical formula for magnesium oxide matches the anticipated formula (MgO).

The experiment entailed burning magnesium in air to create magnesium oxide, then determining the masses of the magnesium and the magnesium oxide to determine the empirical formula for magnesium oxide. By deducting the mass of magnesium from the amount of the magnesium oxide, the mass of oxygen in the compound was estimated. The ratio of the two elements was then estimated by dividing the number of moles of magnesium and oxygen in the compound by the respective atomic weights of the two elements.

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The property of life this represent is photosynthesis.

Photosynthesis is a process in which plants use sunlight, carbon dioxide, and water to produce sugar. This sugar is subsequently converted into ATP, which is used to power the cell. This represents the characteristic of life known as energy processing. The photosynthesis process requires three important ingredients; carbon dioxide (CO2), light, and water (H2O).

When these ingredients are mixed together, the process of photosynthesis begins. In plants, photosynthesis occurs in chloroplasts. These organelles contain chlorophyll, which is a green pigment that absorbs light.The energy absorbed from sunlight is utilized to transform carbon dioxide and water into glucose and oxygen. Oxygen is then released from the plant through tiny pores called stomata. Glucose, on the other hand, is converted to ATP through the process of cellular respiration.

ATP is then used to power various cell functions.The process of photosynthesis is critical to the life of a plant. It allows the plant to produce its own food, which is then used to provide energy for all cellular functions. This represents the characteristic of life known as energy processing.Plants are known as autotrophs because they create their own food. In contrast, animals are heterotrophs because they depend on other organisms for food.

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Answer:

a. 5 8/100 is equivalent to $ 5.08.

Explanation:

i hope this helps :)

The reactants and products parts of a chemical equation must be balanced.

A chemical reaction is said to be balanced when the number of atoms of each element on both sides of the equation are the same.

A chemical equation consists of the reactants and the products, hence, the number of atoms on both sides must be equal for the equation to be balanced.

Therefore, the reactants and products parts of a chemical equation must be balanced.

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From the question we know that 12 - 11.70 = 0.3  so 0.3 / 12 = 0.025 therefore Simon's percent error is 2.5%.

Percent error compares an estimate to an accurate value and expresses the difference among them as a percent. This statistic lets analysts recognize the scale of the mistake relative to the true cost. it's also referred to as percentage error as well as % mistakes.

Percentage errors Calculation Steps :

Percentage error tells you the way huge your mistakes are when you degree something in an experiment. Smaller values suggest that you are close to the accepted or actual value. for instance, a 1% blunder means that you obtain very near the accepted value, whilst 45% means that you were pretty a long way off from the real value.

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Glycosidic bond is broken when you cleave N-acetylglucosamine oligosaccharides.

N-acetylglucosamine oligosaccharides are complex carbohydrates made up of repeating units of N-acetylglucosamine molecules linked by glycosidic bonds. Glycosidic bonds are covalent bonds that link a sugar molecule to another molecule, such as another sugar molecule or a protein.

When these bonds are broken, the oligosaccharides are cleaved into smaller units, such as disaccharides or monosaccharides.

The cleavage of N-acetylglucosamine oligosaccharides can occur through various mechanisms, including enzymatic hydrolysis, which involves the use of enzymes to break the glycosidic bonds. This process is essential for the breakdown of complex carbohydrates in our bodies, allowing us to obtain energy from these molecules.

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Answer:Gases in the atmosphere absorb heat.

Explanation: :) edge2020

Gases in the atmosphere absorb heat is the interaction that contributes to the greenhouse effect.  

• The solar energy captivated at the surface of the Earth is radiated back to the atmosphere in the form of heat. The greenhouse gases absorb the majority of this heat.  

• The greenhouse gases are the complex molecules in comparison to other gases present in the atmosphere, they comprise the composition, which captivates heat.  

• These gases radiate the heat back to the surface of the Earth, to another molecule of greenhouse gas and thus contributing to greenhouse effect.  

• There are many kinds of greenhouse gases, of them the major ones are the carbon dioxide, methane, and nitrous oxide.  

Thus, the statement, that is, gases in the atmosphere absorb heat is correct.

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Answer:

wwwwwwwwww

Explanation:

Answer:

C- The core is made up of dense elements, such as iron and nickel.

Answer:

HCl is an acid and Cl- is its conjugate base

Explanation:

Acid is any specie which donates H+ and base is any specie which accepts H+.

Accoriding to Equation HCl ionises in water and give H+ hence it is an acid. Cl- has now ability to accept proton as it has negative charge therefore it is now base.

Answer:

In a process called diffusion, .

Explanation:

oxygen moves from the alveoli to the blood through the capillaries (tiny blood vessels) lining the alveolar walls. ... From the heart, this blood is pumped to the lungs, where carbon dioxide passes into the alveoli to be exhaled

mass of an atom is concentrated in the nucleus

Answer:

A. Dark-colored moths become common after tree trunks become

dark.

Explanation:

I took the test

Answer:

A

Explanation:

Same

Keith is mostly correct. Melting sugar is a physical change, not a chemical change. In a physical change, the substance undergoes a change in its physical state, such as melting or freezing, without any change in its chemical composition.

The sugar molecules remain the same, just in a different physical state. So when sugar is melted, it is still sugar chemically, even though it looks different in its liquid form.

On the other hand, in a chemical change, the substance undergoes a change in its chemical composition, resulting in the formation of one or more new substances with different chemical properties. For example, when sugar is burned, it undergoes a chemical change, producing carbon dioxide and water, which have different chemical properties than sugar.

So while Sarah is right that melted sugar looks different, this change in appearance is due to a physical change rather than a chemical change.

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The value of the H-C-H bond angle in ethylene is 117°.

The bond angle is a geometric angle that is formed due to the repulsion between atoms or electrons in a bond. The binding angle for a linear molecule is 180°, for a triangular planar molecule it is 120°, and so on.

The size of the bond angle is affected by the magnitude of the repulsive force of electron pairs in the molecule. The lone pair has a slightly stronger repulsive force than the bonding pair. This happens because the lone pair of electrons is only bound to one atom, so the movement is more flexible.

Determine the bond angles using VESPR theory, such as if the shape of the molecule AX means that it is linear with a bond angle of 180 degrees.

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Modelling of block copolymers produces porous nanostructured carbons with easily accessible nitrogen, improving their chemical (electrical) performance for catalytic and energy storage applications.

Mass copolymer modelling refers to a method of creating porous nanostructured carbon atoms with easily accessible nitrogen, thereby improving their chemical (electrical) performance. In this process, a bulk copolymer is used as a template, guiding the formation of carbon materials with specific pore structures.

The resulting porous carbon material provides a high surface area and exposes nitrogen atoms that can participate in various chemical reactions, making the material advantageous for applications such as storage devices. energy storage or catalyst.

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The result of heating 1-propanol with in absence of an acid is 1-propene. In two processes, 1-propene is created from 1-propanol.

What applications does propanol have?

It helps with anxiety, treats cardiac issues, and shields against migraines. Propranolol is a medication that can be used to manage high blood pressure when you have a heart condition. Treat diseases like atrial fibrillation that result in an irregular heartbeat (arrhythmia).

Is propanol poisonous?

Consuming 1-propanol can result in death, loss of consciousness, slowing breathing and heartbeat, and bewilderment. Exposure to the skin may result in allergic or inflammatory reactions. Children, adolescents, & adults who may consume contaminated products are at a high risk of formaldehyde or 1-propanol poisoning.

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Answer:

greenhouse effect is the same as global warming

Explanation:

they both mean warming of the earths surface