A sample of 100 "Eggium" (Eg) atoms are taken where 30 have a mass of 15, 40
have a mass of 16, 20 have a mass of 17, and 10 have a mass of 18. What is the
percent abundance of Eg-17?
A 10%
B 20%
C 30%
D 40%
F 80%
*

The convention of writing the sequence of nucleotide residues in a nucleic acid from the 5' end to the 3' end, in a left to right sequence, is based on the structure and function of nucleic acids.

The order of the nucleotide residues in a nucleic acid is often written from the 5' end to the 3' end, going from left to right in convection.

Nucleic acids, such as DNA and RNA, are composed of long chains of nucleotide residues. Each nucleotide is made up of three primary parts: a nitrogenous base (adenine, thymine, cytosine, or guanine in DNA; adenine, uracil, cytosine, or guanine in RNA), a phosphate group, and a sugar molecule (ribose and deoxyribose in RNA and DNA respectively).

A nucleic acid's 5' and 3' ends correspond to certain carbon atoms in the sugar molecule. The phosphate group is joined to the 5' carbon at the 5' end, and the hydroxyl group (-OH) is joined to the 3' carbon at the 3' end.

Learn more about nucleotide residues at https://brainly.com/question/16308848

#SPJ11

To save an unhealthy lawn, undertake a scientific project involving soil analysis, adjusting soil conditions, implementing proper watering practices, addressing pest and weed control, ensuring proper mowing techniques, monitoring and maintaining the lawn, and seeking professional advice if needed.

Identify the problem: Determine the specific issues affecting the lawn, such as discoloration, patchy areas, or pests. Observe the lawn closely to identify any underlying causes for its unhealthy condition.

Conduct soil analysis: Collect soil samples from different areas of the lawn and perform a soil analysis. This analysis will provide information about the soil's pH level, nutrient composition, organic matter content, and any imbalances that may be contributing to the lawn's poor health.

Adjust soil conditions: Based on the soil analysis results, take necessary steps to correct any imbalances or deficiencies. This may involve adding fertilizers to provide essential nutrients, adjusting the pH level with soil amendments, or enhancing soil structure by adding organic matter.

Implement proper watering practices: Evaluate the lawn's watering regimen. Ensure the lawn receives adequate water but avoid overwatering, as it can lead to fungal growth and shallow root development. Use a targeted watering approach, focusing on the lawn's needs and avoiding water wastage.

Address pest and weed control: Identify any pests or weeds affecting the lawn's health. Implement appropriate pest management strategies, such as using organic or chemical-based pest control methods. Remove weeds manually or apply herbicides selectively to prevent competition with the grass.

Ensure proper mowing techniques: Evaluate the lawn's mowing practices. Adjust the mowing height to the appropriate level for the grass species and avoid cutting too short, as it can stress the grass and make it more susceptible to disease and pests.

For more such questions on   unhealthy lawn visit:

https://brainly.com/question/3759724

#SPJ8

Answer:

IT IS CORONAAAAAAAAAAAAAAAAAAAAA

Answer:

coronavirus is a lung disease, it makes it so that you have a fever, cough, trouble breathing, mild headaches, and sometimes even nausea. you should be cautious because if your at high risk your gonna have trouble recovering from it. wearing a mask could help protect others from the spread of coronavirus. others wearing a mask prevents you from the spread of coronavirus. if you do catch it, make sure you see your doctor and isolate yourself for two weeks to a month and try not to go out as much.

It is true that Nuclear magnetic resonance spectroscopy provides information about a molecule's carbon-hydrogen framework.

NMR spectroscopy is the use of NMR phenomena to study the physical, chemical, and biological properties of matter

A spectroscopic method for observing the local magnetic fields around atomic nuclei is nuclear magnetic resonance spectroscopy, sometimes referred to as magnetic resonance spectroscopy (MRS) or NMR spectroscopy.

The sample is put in a magnetic field, and the nuclear magnetic resonance (NMR) signal is generated by radio waves excitation of the sample's nuclei, which is detected by sensitive radio receivers.

A molecule's atom's intramolecular magnetic field can alter the resonance frequency, providing information about a molecule's electronic structure and its many functional groups. In contemporary organic chemistry, NMR spectroscopy is the only reliable way to identify monomolecular organic molecules since the fields are distinctive or highly specific to particular compounds.

To view more on Nuclear magnetic resonance, refer to:

https://brainly.com/question/21024524

#SPJ4

OSHA would only require the use of eight of the nine pictograms that the GHS employs. Although not required, the environmental pictogram could be employed to provide supplementary information.

Anything without risks to one's physical safety and health is not dangerous and does not need a safety data sheet (SDS). Be aware that many dusts, including flour as well as hardwood dusts, contain potential health risks and demand an SDS.

Wood or wood-based items. the definition of explosives in the Explosives Act. radioactive nuclear substances as defined by the Nuclear Safety as well as Control Act. hazardous waste which is being bought and sold either through recovery, recycling, and disposal.

To know more about pictograms

https://brainly.com/question/29898314

#SPJ4

The hydrosphere include glaciers, groundwater, and polar ice. That is option A, B and C.

Hydrosphere is defined as the part of the earth that is made up of water which includes the surface of the planet, underground, and in the air.

The water found in the hydrosphere of earth moves in cycles in such a way that non is lost.

The components of the hydrosphere include the following:

The polar ice is part of the hydrosphere because it is the frozen part of the earth's hydrosphere.

The lava is not part of the hydrosphere but part of lithosphere and it's released when volcanic eruptions occurs.

Therefore is can be concluded that glaciers, groundwater, and polar ice are parts of the hydrosphere while the lava is not part of the hydrosphere.

Learn more about hydrosphere here:

https://brainly.com/question/25796102

#SPJ1

Answer:

Protons:

- positive

- aka cation

- in the nucleus along with the neutrons

Electrons:

- negative

- aka anion

- situated in the orbital shells/configuration levels (there are many names)

Answer:

rank from lower to higher electronegativity

16)Li

   C

   N

17)Ne

  C

   O

18)Si

   P

   O

19)K

   Mg

   P

20)He

    S

    F

Answer:

N, P, As, Sb

Explanation:

Elements present in the same group having same number of valence electrons. The first option is correct from given options because nitrogen, phosphorus, arsenic and antimony are present in same group thus having same number of electrons in outer most  energy level.

Electronic configuration of N:

N₇: [He] 2s² 2p³

Electronic configuration of P:

P₁₅: [Ne] 3s² 3p³

Electronic configuration As:

As₃₃: [Ar] 3d¹⁰ 4s² 4p³

Electronic configuration Sb:

Sb₅₁: [Kr] 4d¹⁰ 5s² 5p³

Here it is clear from electronic configuration all these elements have five number of valence electrons.

Based on N:Z ratio, Zr-85 is expected to decay by positron emission. Zr-95 is expected to emit beta particles in a beta decay.

The N:Z ratio determines the stability of a nucleus. If a nucleus has  N:Z ratio >1.5 or <1.0, such a nucleus is unstable and will undergo radioactive decay. The aim of such a decay is to attain a favorable  N:Z ratio.

For Zr -85, the  N:Z ratio is 1.1 while the  N:Z ratio of Zr-95 is 1.4.  Zr -85 is expected to decay by positron emission which increases the N:Z ratio. For  Zr-95, the nucleus tends to undergo processes that decrease the  N:Z ratio such as beta emission.

Learn more: https://brainly.com/question/2192784

{The prediction will be, I2 will be found mainly in the top layer because it will dissolve more in the C6H14(l). The correct option is C.

When C6H14(l) and H2O(l) are mixed, they form two separate layers due to their difference in density. Since the density of C6H14(l) is lower than that of H2O(l), it will form the top layer, while the denser H2O(l) will form the bottom layer. When I2(s) is added to the mixture and shaken again, it will dissolve mainly in the layer in which it is more soluble.

I2 is more soluble in C6H14(l) than in H2O(l), so it will dissolve more in the top layer of C6H14(l). Therefore, the best prediction is that I2 will be found mainly in the top layer because it will dissolve more in the C6H14(l) (Option C).

Iodine (I2) is a nonpolar substance, and it is more likely to dissolve in the nonpolar hexane (C6H14) than in the polar water (H2O). Since hexane is less dense (0.66g/mL) than water (1.00g/mL), it will form the top layer, and thus, the iodine will mainly dissolve in the top layer.

For more such questions on Iodine.

https://brainly.com/question/1349512#

#SPJ11

Potassium hydrogen phthalate is primary standard.

When standardizing a strong base titrant, the potassium hydrogen phthalate, or KHP, is frequently utilized as the principal standard.

The most typical application of phenolphthalein indicator occurs in titrations where KHP is employed as such an acidimetric standard to also standardize base solution.

An exceedingly pure, stable, devoid of water or hydration, high molecular weight reagent is just a fundamental standard. Sodium carbonate, potassium hydrogen iodate, potassium dichromate, oxalic acid, and various others are some primary standards.

Therefore, Potassium hydrogen phthalate is primary standard.

To know more about Potassium hydrogen phthalate

https://brainly.com/question/15236909

#SPJ4

Answer: D. Electrostatic forces

Explanation:

According to the forces of attraction, electrostatic forces  hold ionic solids together.

Forces of attraction  is defined as a force by  means of which atoms in a molecule  can combine. it is basically an attractive force which exists  in nature.  It can act between an ion and an atom as well.It varies for different  states  of matter that is solids, liquids and gases.

The forces of attraction are maximum in solids as  the molecules present in solid are tightly held while it is minimum in gases  as the molecules are far apart  from each other. The forces of attraction in liquids is intermediate of solids and gases.

The physical properties such as melting point, boiling point, density  are all dependent on forces of attraction which exists in the substances.

Learn more about forces of attraction,here:

https://brainly.com/question/23841038

#SPJ7

The sample most likely to be a protein .

Amino acids, which are smaller building blocks of proteins, are linked together in lengthy chains to form proteins. To create a protein, 20 distinct kinds of amino acids can be mixed. Each protein's precise function and distinctive 3-dimensional structure are determined by the order of the amino acids.

Combinations of three DNA building units (nucleotides), which are dictated by the order of genes, are used to code for amino acids.

The main functions of the proteins are determined below:-

To learn more about protein, refer this link

https://brainly.com/question/19853586

#SPJ4

Answer: Why exacly am i a rat

Explanation:

,....

but thanks

Answer:

what!!!??????

The term watershed refers to a region of land through which water may be drained into a particular receiving water body.

The term watershed refers to a region of land through which water may be drained into a particular receiving water body such as a river or a stream. The question is incomplete as the watershed model was not shown here.

However, watersheds provide movement corridors for water and may help to prevent erosion and manage the ecosystem better.

Learn more about watershed:https://brainly.com/question/2142603

The regiochemistry of hydroboration/oxidation of alkenes is (a) Markovnikov.

The hydroboration/oxidation reaction follows Markovnikov's rule, which states that the electrophile (in this case, the boron atom) adds to the carbon atom of the double bond that has the greater number of hydrogen atoms attached to it. The regioselectivity of the reaction is determined by the relative stability of the carbocation intermediates formed during the reaction.

In hydroboration, the boron atom adds to the less substituted carbon atom of the double bond, leading to the formation of a boron-alkyl bond and a boron-hydrogen bond. Subsequently, in the oxidation step, the boron-alkyl bond is replaced with an alcohol group (-OH) while maintaining the regiochemistry established during hydroboration.

Therefore, the regiochemistry of hydroboration/oxidation of alkenes is Markovnikov, where the electrophilic addition occurs preferentially at the carbon atom of the double bond that has the greater number of hydrogen atoms attached to it.

To learn more about alkenes here:

https://brainly.com/question/30217914

#SPJ11

Answer:

2.335 ×10∧24 particles

Explanation:

Answer: a)

Explanation:

definition : The niche of an organism is the functional role that it plays within an ecosystem

Answer:

density = 5 g/ml

Explanation:

D=m/v. Mass=30g and Volume=6mL

SO solve for D when m = 30 and v = 6

D=m/v

D = 30/6

density = 5 g/ml

The two criteria for the design of the ammonia-making process are the Safety factor and the Efficiency factor.

The significance of these criteria is as follows:

Safety is paramount in any process design. The design must consider the dangerous nature of the ammonia production process, including the flammable nature of hydrogen gas and the toxicity of ammonia. During all process stages, including transportation, ammonia should be handled safely and securely. The plant's design must ensure that the safety of workers and the environment is taken into account at all times. Therefore, the safe handling of ammonia is essential for the design of an ammonia plant.

It is important to consider the efficiency factor of the ammonia-making process. The efficiency of the ammonia plant is determined by its capacity to convert reactants into products using a minimal amount of energy. It is necessary to consider the feedstock, hydrogen, nitrogen, and ammonia product's cost to determine the overall efficiency. A lower energy cost and a high production yield are essential for a profitable ammonia plant. Therefore, the efficiency factor of the ammonia-making process is vital to design a cost-effective plant.

Learn more about the design process here:

https://brainly.com/question/19564324

#SPJ11

Answer:

The answer is A

Explanation:

To determine the number of grams of sulfur dioxide formed when 10.0 mol of copper(I) sulfide reacts during the process of roasting, we need to use the balanced chemical equation and the molar masses of the compounds involved.

The balanced chemical equation for the reaction of copper(I) sulfide (Cu2S) with oxygen (O2) to form copper(I) oxide (Cu2O) and sulfur dioxide (SO2) is:

2 Cu2S + 3 O2 → 2 Cu2O + 2 SO2

From the balanced equation, we can see that for every 2 moles of Cu2S, 2 moles of SO2 are formed.

Therefore, using the stoichiometry of the reaction:

10.0 mol Cu2S * (2 mol SO2 / 2 mol Cu2S) = 10.0 mol SO2

Next, we can calculate the mass of sulfur dioxide using the molar mass of SO2, which is approximately 64.06 g/mol:

Mass of SO2 = 10.0 mol SO2 * 64.06 g/mol

= 640.6 g

Therefore, when 10.0 mol of copper(I) sulfide reacts during roasting, approximately 640.6 grams of sulfur dioxide are formed.

To know more about stoichiometry, click here:

https://brainly.com/question/28780091

#SPJ11

Answer:  Aluminum reacts with oxygen to produce aluminum oxide as follows: 4Al + 3O2 → 2Al2O3 a.

Explanation: I really really hope that was helpful.

Answer:16

Explanation:

When a glass rod is held over a burning candle, physical change as well as chemical change occurs in the glass rod as well as the candle wax respectively.

Physical and chemical changes occur while a candle burns. Physical changes occur in a burning candle when the candle wax melts and forms liquid wax when heated. It is a bodily transformation. Because it solidifies again when cooled. This is also a change that may be reversed. Chemical Changes in a Burning Candle When you burn the candle, the wax around the wick melts. The wick of the candle is absorbed by liquid wax. The heat created by the flame causes the liquid wax to evaporate. This wax vapor burns near the flame, producing new chemicals such as carbon dioxide, carbon soot, water vapors, heat, and light. This is a permanent alteration.

A chemical change is illustrated by the burning of a candle. Two reactants unite to generate new products in chemical reactions. Wax is a kind of hydrocarbon. When hydrocarbons burn, they react with oxygen to produce carbon dioxide and water vapor.

A candle wick transports fuel by a method known as capillary action. Through the wick, liquid fuel (wax) reaches the flame, vaporizes, and burns. The candle wicks devour themselves before the wax is eaten. The wicks are coated with wix to supply the initial fuel source, and when consumed, the wicks are transformed to \(CO_2\) and water vapor through the chemical process known as burning.

The blackening of a glass rod is only a physical change. Glass rod's chemical structure will not have altered. Soot has accumulated on the glass rod. The rod has no effect on anything.

Learn more about the Physical and chemical changes here:

https://brainly.com/question/9207220

#SPJ4

Answer: B

Explanation:

Answer:

b

Explanation: