how will beta decay affect the atomic number and mass number of the atom?

The sentence that shows humans' main problem is "The level of carbon dioxide in Earth's atmosphere has risen consistently for decades, trapping extra heat near the surface of the Earth," which is the last option.

The sentence that shows humans' main problem is "The level of carbon dioxide in Earth's atmosphere has risen consistently for decades, trapping extra heat near the surface of the Earth." This sentence indicates that the main problem is the increasing levels of carbon dioxide in the Earth's atmosphere caused by human activities. This increase in carbon dioxide is resulting in global warming, where heat is being trapped near the Earth's surface, leading to several negative effects, including rising sea levels, changes in weather patterns, and loss of biodiversity.

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Answer:

2.27%

Explanation:

The observed value of the boiling point = 71.8°C

The actual value of the boiling point = 70.2°C

We need to find the percentage error of the student's measurement. The percentage error in any value is given by :

\(\%=\dfrac{\text{calculated value-actual value}}{\text{actual value}}\times 100\\\\=\dfrac{71.8-70.2}{70.2}\times 100\\\\=2.27\%\)

So, the required percentage error is 2.27%.

The carbonyl group in a ketone is bonded to two hydrogen atoms. In a ketone, the carbonyl group consists of a carbon atom double-bonded to an oxygen atom (C=O).

The remaining two valence electrons of the carbon atom are occupied by two other substituents or groups. These can be alkyl or aryl groups, and they can be the same or different. The carbonyl group in a ketone is not directly bonded to any hydrogen atoms. It consists of a carbon atom double-bonded to an oxygen atom (C=O) with two other substituents or groups attached to the carbon atom. These substituents can be alkyl or aryl groups. Therefore, the correct answer is that the carbonyl group in a ketone is bonded to zero hydrogen atoms.

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Answer:

changes that change the matter of the object and made it into another object

Explanation:

In the Circuit Builder Gizmo, the substances that were demonstrated to be conductors include copper, silver, brass, iron, and lead.

The ability of a substance to carry electricity is referred to as conductivity. While plastics and wood are poor conductors of electricity, some materials, such as metals, are excellent conductors. We may build and test electrical circuits using a variety of materials using the Circuit Builder Gizmo. We may create a circuit by connecting a battery, a switch, and a light bulb. Then, by using various materials as conductors in the circuit, we can test the conductivity of those materials. By inserting a sample of each substance as a conductor in the circuit and checking to see if the light bulb illuminates, we can test the conductivity of each item listed in the question using the Circuit Builder Gizmo. If the light bulb illuminates, the substance is a good conductor of electricity; if the light bulb remains dark, the substance is a insulator.

Due to their high electrical conductivity and low resistance, copper and silver are both effective conductors of electricity. Brass, a copper and zinc alloy, has a good conductivity as well. Iron and lead are not as effective conductors of electricity as copper and silver, but they can still do so. This is so that electrons can pass through them due to their metallic characteristics.

Therefore, the substances that were demonstrated to be conductors include copper, silver, brass, iron, and lead.

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When the equation for the reaction representation above is balanced and all coefficients are reduced to the lowest whole-number terms, the coefficient for O₂ is 5.

An equation for a chemical reaction is said to be balanced if both the reactants and the products have the same number of atoms and total charge for each component of the reaction. In other words, both sides of the reaction have an equal balance of mass and charge.

Note that a chemical equation that is balanced has equal amounts of each element's atoms on both sides of the equation and conserves mass.

Based on the equation given  O₂ will have 5unit or mole if it is balanced because the  C₃ will share with O₂.

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See full question below

C3H8 + O2 -> CO2 + H2O

When the equation for the reaction representation above is balanced and all coefficients are reduced to the lowest whole-number terms, the coefficient for O2 is:

Answer:

That they are miscible in one another

Answer:

math and science

Explanation:

Math , science (biology, chemistry and physics) with advance courses in food chemistry, microbiology, food processing operation and engineering design.

‍

Specific Heat of the metal will be = 4.184 J/C

Mass of metal = 28 g

Mass of water = 28 g

Rise in temperature = 23.8 - 19 = 4.8 C

Specific heat of water = 4.184 J/C

Let the specific heat of metal =S

The heat released by metal =mass of metal * specific heat of metal * Change in temperature

\(& =28\times S \times 4.8{ }^{\circ} \mathrm{C} \\& =134.4 S^{\circ} \mathrm{C}\)

Heat absorbed by water = mass of water x specific heat of water x change in temp. \(=28 \times 4.184 \times 4.8=562.3296 J\)

Using the principal of Caloriemeter:

We have, Heat released by metal = Heat absorbed by water

134.4S = 562.3296 =>4.184 J/C

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The correct question should be:

if we are heated a metal with 28g mass then we add it in a coffee cup with 28g water. the water temperature raised from 19 degree to 23.8 oc. what was the specific heat of the metal. the water specific heat of water is 4.184 j/g oc.

Answer:

Water is a special element because it is the one main source that keeps us alive

Explanation:

Water can be solid or liquid

When tritium, 31H, decays by β− emission, it releases energy in the form of radiation. Tritium is a radioactive isotope of hydrogen, that has a half-life of about 12 years. During its decay, tritium emits a beta particle, an electron released from the nucleus. The energy released during this decay process depends on the specific decay pathway of the tritium nucleus.

The energy released during tritium decay by β− emission can be calculated using the Q-value equation, which relates the masses of the parent and daughter nuclei and the masses of the emitted particles. The Q-value for tritium decay is calculated as follows: Q = (Mparent - Mdaughter - Melectron)c^2, Where Mparent is the mass of the parent nucleus, Mdaughter is the mass of the daughter nucleus, Melectron is the mass of the emitted electron, and c is the speed of light.
For tritium decay, the Q-value is approximately 18.6 keV, the energy released during decay. This energy is released as kinetic energy of the emitted beta particle and can be used for various applications, such as in betavoltaic devices.
In conclusion, tritium decay by β− emission releases energy in the form of radiation, with a Q-value of approximately 18.6 keV. The energy released can be used for various applications, but it is also important to note that exposure to tritium can be hazardous to human health.

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Answer:

2)Electron dot structures of carbon dioxide:-Oxygen atom contains 6 valence electrons which form 2 lone pairs. Since it is bonded to only one carbon atom, it must form a double bond. Carbon atom contains four valence electrons, resulting in zero lone pairs. Therefore, it is doubly bonded to each oxygen atom.

3))Sulfur has an atomic number is 16 with the

symbol as 'S'

Explanation:

A covalent bond is a type of bond that is typically characterized by sharing of electrons between the atoms of a non-metallic chemical element.

A covalent bond can be defined as a type of bond that exists in chemical compounds, and it is typically characterized by sharing of electrons between the atoms of a non-metallic chemical element.

In Chemistry, there are two (2) main types of covalent bond and these include:

The carbon atoms of carbon dioxide (\(CO_2\)) has four valence electrons and the oxygen atoms has six valence electrons. Thus, electron dot structure of carbon dioxide represents a double covalent bond.

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Answer:

+3

12 electrons and 15 protons.

Explanation:

The element having 15 electrons and 15 protons have atomic number 15. We know that when an atom lose or gain the electron ions are formed.

Anion formation:

Anion is formed when electron is accept by an atom.

X + e⁻ → X⁻

Cation formation:

Cation is formed when electron lose be an atom.

X → X⁺ + e⁻

The given atom loses 3 electrons thus oxidation number will be +3 and cation is formed.

X → X³⁺ + 3e⁻

Now element X have 15 protons and 12 electrons.

Answer:

Dark clothing

Explanation:

Dark clothing like black absorbs/locks in heat. Since exercise is to burn and tonify our body from unwanted fat it is important to sweat. This is where heat comes in and helps you sweat

I prefer light coloured cloth to wear, as if we wear dark coloured cloth during exercise it will absorb more heat bcox of the thickness and etc etc..but when it's light coloured cloth it won't have much thickness and it's fabric is just suitable for warm places..

The smoke inhaled from a burning cigarette contains a mix of over 7,000 chemicals, including nicotine, tar, and carbon monoxide, many of which are toxic and carcinogenic.

Smoking can cause a wide range of health problems, including lung cancer, heart disease, stroke, respiratory infections, and chronic obstructive pulmonary disease (COPD). It can also affect the reproductive system, increase the risk of osteoporosis, and damage the skin and teeth.

There are several strategies that can be effective in quitting smoking, including nicotine replacement therapy, medication, counseling, and support groups. Quitting smoking can be challenging, but it can significantly improve overall health and reduce the risk of serious health problems.

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Answer:

Eukaryotes

Explanation:

Explanation:

Nitrogen, Oxygen,Agron , Carbondioxide

The similarity between the structure of nylon and protein is that both are polymers composed of repeating units. However, there are also significant differences in their structures.

Similarity: Both nylon and protein are polymers. This means that they are large molecules made up of smaller repeating units called monomers. In the case of nylon, the monomers are amide groups, while in proteins, the monomers are amino acids. This similarity in the basic structure allows both nylon and proteins to have long chains of repeating units.

Difference: The main difference between the structure of nylon and protein lies in the nature of their monomers. Nylon is a synthetic polymer, meaning it is artificially produced, while proteins are natural polymers found in living organisms. Nylon is made by combining two different monomers through a chemical reaction, whereas proteins are synthesized through biological processes in cells.

Another difference is the complexity of their structures. Proteins are highly complex and have a specific sequence of amino acids, which determines their unique properties and functions. In contrast, nylon is a simpler polymer with a more regular repeating pattern.

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A 100.0 mL sample of natural water was titrated with 13.57 mL of 0.1123 M Na OH solution to reach a light pink  are the phenolphthalein end point. The number of millimoles of Na OH required for the titration is 1.525011 millimoles. Titration is a technique used in chemistry

to identify the quantity of a substance by adding a reactant until the chemical reaction is completed. In titration, a solution of known concentration (the titrant) reacts with a solution of unknown concentration (the analyte) to determine its concentration. Titration of natural water with Na OH In this case, we are titrating natural water with Na OH to find the concentration of the unknown solution. The balanced chemical reaction for the titration of natural water with Na OH is:H2O + Na OH → Na+ + OH- + H2O

The volume of NaOH required to reach the end-point of the titration is 13.57 mL. The molarity of Na OH used for the titration is 0.1123 M. We can use the following formula to calculate the number of millimoles of Na OH required for the titration Millimoles of Na OH = (Volume of Na OH × Molarity of NaOH) / 1000Substitute the given values in the above equation and solve for the millimoles of Na OH required for the titration. Millimoles of Na OH = (13.57 mL × 0.1123 M) / 1000= 0.001525011 millimoles Therefore, the number of millimoles of NaOH required for the titration is 1.525011 millimoles.

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Answer:

Dont listen to that other dude, its some fake scam thing.

Explanation:

Its a chemical reaction between H2O and the chemicals in bath bombs.

so basically the bubbles come from the chemical reaction between the water and bath bomb,

hope this helps! :)

Answer:

5

Explanation:

An ion has a net charge of 3+

ion has 8 protons

How many electrons does it have

A neutral atom has equal number of electrons and protons.

If a neutral atom loses electron it acquires a positive charge.

So to acquire 3+ charge the atom must have lost three electrons.

So the number of protons exceeds the number of electrons by 3.

The pKa of EtCONPhH can be determined through experimental measurement or using a pKa prediction software.

The pKa value refers to the acid dissociation constant, which is a measure of the acidity or basicity of a compound. In this case, EtCONPhH refers to N-phenylacetamide, an amide compound.

Since I don't have the exact pKa value on hand, you can either search for it in a pKa database, consult a textbook, or use pKa prediction software to find the value. Keep in mind that the pKa value is important for understanding the compound's behavior in different chemical reactions and environmental conditions.

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Answer:

38 g

Explanation:

to find the mass of the liquid we just subtract the mass of the container by the mass of the container after they added the liquid

163-125

38

The liquid is 38 g

Hopes this helps please mark brainliest

Answer:   The final stage of the life cycle of a tree is when it has fully grown and reached the ... You should be confident in your supplier's approach to sustainability. ... This is the first occasion you will see a stem and perhaps a couple of leaves. ... The next phase is the sapling stage, this is when the sprout continues to grow and has ...

Explanation:

Answer:

lustrous

malleable

ductile

sonorous

good conductors of electricity and heat

Since the volume decreased, it means that the pressure is going to rise. Thus, the equilibrium of the reaction will shift in the direction that has the least amount of moles.

The statement, that describes the equilibrium "will change in the direction with the minimum moles."

A condition of equilibrium has become one of balance. Chemical equilibrium is the state in which both the reactants and products are present in concentrations that have no further tendency to change with time, resulting in no observable change in the system's properties.

When volume decreases, the equilibrium shifts to favor the direction that produces fewer moles of gas. When the volume is raised, the equilibrium shifts in favor of the direction that produces the most moles of gas. Because the container's volume will be lowered from 5.0 L to 3.0 L, the pressure will rise. As a result, the equilibrium of the reaction will shift in the direction with the fewest moles. When the volume is reduced, the pressure rises. This demonstrates that a gas's pressure is inversely proportional to its volume.

Hence the correct answer is equilibrium will change in the direction with the minimum moles.

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The two different ions present in the compound magnesium bromide are \(Mg^{2+}\)and \(Br^-\).  

Given:

The compound \(MgBr_2\) 

To find:

The two different ions in the given compound.

Solution:

The given compound is magnesium bromide, \(MgBr_2\) .

Magnesium bromide is made up of magnesium ions and bromide ions.

Magnesium ion +2 bromide ions → Magnesium bromide

\(Mg^{2+}+2Br^-\rightarrow MgBr_2\)

The ion with a positive charge (cation) = Magnesium ion = \(Mg^{2+}\)

The ion with a negative charge (anion) = Bromide ion = \(Br^-\)

The two different ions present in the compound magnesium bromide are \(Mg^{2+}\)and \(Br^-\).  

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Answer:

Metallic character (becoming less metal like)

Explanation:

I took the test

Answer:

\(5.450 \times {10}^{ - 4 } \times 3.550 \times {10}^{ - 7} \\ 19.3475 \times {10 }^{ - 11} \\ 1.935 \times {10}^{?10} \)