Theoretical element “A” has four isotopes. Use the data in the table to calculate the average atomic mass of the unknown element A. All steps of the calculations must be shown for credit.

Isotope Atomic Mass Abundance
A - 49 49.022 amu 89.89%
A - 48 48.031 amu 7.01%
A - 47 48.007 amu 3.00%
A - 46 46.001 amu 0.10%

Answers

Answer 1

From the calculations, the average atomic mass of the element is 48.85.

What is the percentage abundance?

The percentage abundance has to do with the amount of an isotope that is available in nature.

Since we have the following mass abundance;

A - 49 49.022 amu 89.89%

A - 48 48.031 amu 7.01%

A - 47 48.007 amu 3.00%

A - 46 46.001 amu 0.10%

The average atomic mass =

(0.8989 * 49.022) + (0.0701 * 48.031 ) + (0.03 * 48.007) + (0.001 * 46.001 )

= 44 + 3.4 + 1.4 + 0.05

= 48.85

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Related Questions

Describe neutrons.
Location:
Charge:
Mass:

Answers

Location:  

✔ nucleus

Charge:  

✔ neutral

Mass:  

✔ one amu

A neutron is a particle present in an atom that has no charge and is present in the nucleus of the atom, the mass of the neutron is 1 amu, and it is very significant because it is used in nuclear fission and fusion reactions.

What is the significance of the neutron?

It is very significant as it is used in the nuclear field, such as in nuclear fission and nuclear fusion reactions, and these reactions are highly useful in the nuclear power plant to test nuclear weapons and other applications such as in materials science and engineering.

Hence, a neutron is a particle present in an atom that has no charge and is present in the nucleus of the atom, the mass of the neutron is 1 amu, and it is very significant because it is used in nuclear fission and fusion reactions.

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Which of the following greenhouse gases is the focus of current public discussion?
Answer choices
A ) Carbon Dioxide
B ) Methane
C ) Water Vapor
D ) Sulfur Hexafluoride

Answers

Answer:

a

Explanation:

bcoz op da grabiti of the earth

Identify all correct statements about how viroids differ from viruses.
Select all that apply.
-Unlike viruses, viroids do not encode proteins.
-Unlike viruses, the genetic material of a viroid is protein.
-Unlike viruses, viroids cause plant disease.

Answers

-Unlike viruses, viroids do not encode proteins.

Viroids are small infectious agents composed solely of RNA molecules. The correct statements about how viroids differ from viruses are:

1. Unlike viruses, viroids do not encode proteins.

3. Unlike viruses, viroids cause plant disease.

Viroids lack the protein coat typically found in viruses and do not encode proteins of their own. Viroids are known to cause diseases in plants and are not associated with animal or human diseases.

Viroids are unique infectious agents that differ from viruses in several ways. One of the key distinctions is that viroids do not encode proteins, unlike viruses. While viruses are composed of genetic material (either DNA or RNA) surrounded by a protein coat, viroids consist solely of small RNA molecules. This means that viroids cannot produce their proteins and rely on host cellular machinery for replication.

Therefore, the correct statements about how viroids differ from viruses are:

1. Unlike viruses, viroids do not encode proteins.

3. Unlike viruses, viroids cause plant disease.

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What is number of ATP molecules produced per molecule of glucose when Pyruvate is used to produce NADH, ATP, and FADH2

Answers

Answer:

2 ATP molecules.

Explanation:

This question is describing KREB'S CYCLE, which is the second stage of aerobic cellular respiration that occurs in the mitochondrion. In the Kreb's cycle, also known as tricarboxylic acid cycle, pyruvic acid (product of glycolysis) is oxidized to produce NADH, FADH2, ATP and CO2 as products.

In a nutshell, per glucose molecule that begins the respiration process (glycolysis), 2 molecules of ATP are produced alongside 3 NADH and 1 FADH2 molecules in the Krebs cycle. Note that, the electron carriers (NADH and FADH2) are used in the electron transport chain.

1. Which of the following statements best describes how genes relate to traits? a. Genes code for the production of specific proteins. These proteins lead to different traits. b. Genes and traits function together to produce proteins c. Traits contain instructions for making proteins, and genes are the observable outcome of such proteins. d. Genes are expressed according to instructions in traits.​

Answers

PLS TELL ME THE ANSWER NOWWWWWW >:(

Genes code for the production of specific proteins. These proteins lead to different traits. The correct option is a.

What are traits?

A trait, as it relates to genetics, is a unique feature of an individual. Genes, environmental factors, or a combination of both can influence traits.

Qualitative traits (such as eye color) and quantitative traits (such as height or blood pressure).

A gene is the most fundamental physical and functional unit of heredity. DNA is the building block of genes.

Some genes serve as blueprints for the creation of proteins. Many genes, however, do not code for proteins. Genes in humans range in size from a few hundred DNA bases to over 2 million bases.

Genes encode instructions for the production of specific proteins. These proteins result in various characteristics.

Thus, the correct option is a.

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According to the following information determine the biomolecule. 1. speed up chemical reactions, provides structure in the body, ex. keratin 2.primary source of energy, ex. sugar/starch 3. long-term energy storage, make up cell membranes, ex. fats 4.stores genetic information, ex. DNA​

Answers

sugar is the best thing to do that is so pretty good for me it’s bc i is a good thing for me it’s bc it was so cool i i and the holocaust was good and the water and the franks was pretty cool and the atmosphere and

Help pls!!!!!!!!!!!! Easy Question

Answers

Answer:

Metric ruler

Explanation:

You need to measure length, which is exactly what a ruler measures. The other option measure other things, like liquids or temperature.

Answer:

I'm pretty sure it would be C.

Explanation:

what is aerobic respiration ​

Answers

process of producing cellular energy involving oxygen

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30. Are lipids hydrophobic or hydrophilic? Are they polar or nonpolar molecules?
31. Describe a simple test to detect lipids in a substance. (Think about the last time you got a
burger and fries from Cookout)
32. What are the major elements found in proteins?
33. What is the basic subunit monomer of a protein?
34. What is the name of the bond that forms between amino acids when building a polypeptide
or protein?
35. What is a polypeptide?
I
36. What are the functions of proteins?
37. What foods contain high amounts of protein?
38. What are the four levels of structure found in proteins?

Answers

30.Water molecules are polar because they have positive and negative ends, rather like little magnets. Most lipids are non-polar (having no charged areas) or only slightly polar, with a very few charged areas. Water mixes with hydrophilic (water-loving) compounds by sticking to their charged groups.

31.Lipids are detected using the emulsion test. This is what happens: The test substance is mixed with 2 cm 3 of ethanol. An equal volume of distilled water is added.

32.In addition to carbon, hydrogen, and oxygen atoms, all proteins contain nitrogen and sulfur atoms, and many also contain phosphorus atoms and traces of other elements. Proteins serve a variety of roles in living organisms and are often classified by these biological roles.

33.amino acids

For example, proteins are composed of monomers called amino acids. They are linked together to form a polypeptide chain, which folds into a three dimensional (3D) structure to constitute a functional protein

34.Peptide Bonds

Section 3.2Primary Structure: Amino Acids Are Linked by Peptide Bonds to Form Polypeptide Chains. Proteins are linear polymers formed by linking the α-carboxyl group of one amino acid to the α-amino group of another amino acid with a peptide bond (also called an amide bond).

35.A polypeptide is a single linear chain of many amino acids (any length), held together by amide bonds. A protein consists of one or more polypeptides (more than about 50 amino acids long). An oligopeptide consists of only a few amino acids (between two and twenty).

36.Here are 9 important functions of protein in your body.

Growth and Maintenance. Share on Pinterest. ...

Causes Biochemical Reactions. ...

Acts as a Messenger. ...

Provides Structure. ...

Maintains Proper pH. ...

Balances Fluids. ...

Bolsters Immune Health. ...

Transports and Stores Nutrients.

37.Here is a list of 20 delicious foods that are high in protein.

Eggs. Whole eggs are among the healthiest and most nutritious foods available. ...

Almonds. Almonds are a popular type of tree nut. ...

Chicken breast. Chicken breast is one of the most popular protein-rich foods. ...

Oats. ...

Cottage cheese. ...

Greek yogurt. ..

Milk.

Broccoli.

38.The four levels of protein structure are primary, secondary, tertiary, and quaternary.

An air mass forms over the water of the Gulf of Mexico and moves from the equator up toward us. What is it called?

Answers

An air mass forms over the water of the Gulf of Mexico and moves from the equator up toward us. What is it called?

Answer:

The word that describes humidity (maritime or continental) is paired with the word that describes temperature (equatorial, tropical, polar or arctic). For example, if an air mass forms over a tropical ocean, it is called maritime tropical. If an air mass forms over land in the far north it is called continental polar.

Approximately how many base pairs are in the human body?

Answers

Answer:

3 billion

Explanation:3 billion

The human genome contains approximately 3 billion of these base pairs, which reside in the 23 pairs of chromosomes within the nucleus of all our cells. Each chromosome contains hundreds to thousands of genes, which carry the instructions for making proteins.

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5. Explain how the discovery of Earth's true age, and the banning of leaded gasoline in the United States,
are connected?

Answers

Answer:

The best estimate for Earth's age is based on radiometric dating of fragments from the Canyon Diablo iron meteorite. From the fragments, scientists calculated the relative abundances of elements that formed as radioactive uranium decayed over billions of years.The U.S. Congress adopted the Clean Air Act in 1970 and created the U.S. Environmental Protection Agency. Effective January 1, 1996, leaded gasoline was banned by the Clean Air Act for use in new vehicles other than aircraft, racing cars, farm equipment, and marine engines.

Explanation:

True or false: Glucose the food of plants .

Answers

Answer:

True

Explanation:

Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Glucose is used by plants for energy and to make other substances like cellulose and starch.

PLEASE HELP, will mark brainlest, to who answers with the correct answer
What is some BIOLOGICAL EVENTS.

Answers

Answer:

A bioevent or bio-event (a shortening of 'biotic event' or 'biological event') is an event recognised in a sequence of sedimentary rocks, where there is a significant change in the biota as recorded by assemblages of fossils over a relatively short period of time.

Explanation:

1.According to Greek legend the war between the Greeks and the people of Troy was a long and bloody one.  And at the center was Helen, the most beautiful woman in all of Greece. And Paris, the Trojan prince who loved her.  PLZ HELP ME THIS IS A GRADE!!  

*THIS IS CONFUSING PLEASE ANSWER!!!, I'LL GIVE BRAINLIEST*
Which is the correct zooplankton size variation from smallest to largest?

a.) megaplankton, picoplankton, microplankton, nanoplankton

b.) picoplankton, nanoplankton, mesoplankton, macroplankton

c.) microplankton, nanoplankton, picoplankton, mesoplankton

Answers

Answer:

b

Explanation:

its the closest out of all the choices

its actually

pico

nano

micro

meso

Answer:

B.) Picoplankton, nanoplankton, mesoplankton, macroplankton.

Explanation:

Took the Module 1 Exam.

Question 11
Kelly's teacher asked the class to explain how the rough endoplasmic reticulum works with the nucleus to maintain homeostasis.
Which student's statement is BEST evaluated by the claim and why?
biology

Answers

Answer:

C

Explanation:

Because the roughly endoplamsic works with nucleus and it does so to maintain homeostasis it has to.

Jacob clarified that when issues develop synthesize proteins in the rough endoplasmic reticulum signals the nucleus can receive signals from the reticulum to control the synthesis of proteins.

What is rough endoplasmic reticulum?

Because it produces proteins for the cell, the rough ER (endoplasmic reticulum) aids in the maintenance of homeostasis. The role of the rough ER is to produce proteins that are either going to be secreted or are going to other membrane-bound organelles in the endomembrane system.

The ER has a special degree of control over protein synthesis because of its close proximity to the cell nucleus.

When issues with protein synthesis and folding arise, the rough ER can quickly transmit signals to the nucleus, which affects the overall pace of protein translation.

Therefore, the nucleus can receive signals from the rough ER to control the synthesis of proteins.

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Which of the following best explains why a structural formula of a chemical compound is more useful than a molecular formula?

Both formulas identify the specific atoms in a particular compound. However, a structural formula also shows how the atoms in a compound are bonded together.
Both formulas identify the types of atoms in a particular compound. However, a structural formula also shows how many atoms of each type are in a compound.
Both formulas show the location of each valence electron in a particular compound. However, a structural formula also shows the ratio of protons to neutrons within a compound.
Both formulas show the ratio of protons to neutrons within a particular compound. However, a structural formula also shows the location of each valence electron in a compound.

Answers

Answer: Both formulas identify the specific atoms in a particular compound. However, a structural formula also shows how the atoms in a compound are bonded together.

Explanation:

Molecular formula is the chemical formula which depicts the actual number of atoms of each element present in the compound.  

Empirical formula is the simplest chemical formula which depicts the whole number of atoms of each element present in the compound.

Structural formula is the formula which depicts the actual number of atoms of each element present in the compound by showing the bonding between the atoms.

Lewis structures show the valence electrons around each atom present in the compound.

Answer:

the answer is A

Explanation:

I USED 30 POINTS SO YOU GET 15 FOR ANSWERING:

Is chromosome number a good predictor of organism complexity? Explain.

[PLEASE EXPLAIN WHY OR WHY NOT ALONG WITH YES OR NO]

Answers

Answer:

No, the number of chromosomes is actually barely related to complexity at all. For instance, humans have 46 chromosomes (2 sets of 23) whereas small deer have 6 chromosomes, and carp have over 100

Explanation:

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No, the number of chromosomes is not related to the complexity of an organism. For example, humans have 23 pairs of chromosomes while amoeba has 27 pairs of chromosomes.

What is a chromosome?

They are thread-like genetic material present inside the nucleus. They are hereditary material, they pass from one generation to another. They are made up of deoxyribonucleic acid (DNA) and protein (histone protein).  DNA is tightly coiled around the histone protein.

They carry all kinds of genetic information. They play important role in cell division, mutation, variation, regeneration, and heredity.

Different organisms have different numbers of chromosomes, humans have 23 pairs, fruit flies have 4 pairs, and yeast has 16 pairs of chromosomes. Therefore, their number does not have any correlation with the complexity of any organism.

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How many atoms of Carbon are in 6C2H6?

Answers

Answer:

there are 6 atoms of carbon

What are similarities about Early earth and Modern earth

Answers

Answer:

Crust, mantle and core.

Water availability.

Volcanic eruptions.

Explanation:

The main similarities about Early earth and Modern earth is their layers of soil such as crust, mantle and core means that the both  Early earth and Modern earth are made up of these three layers. At that time water is present in huge amount while on the other hand, in Modern earth water is also present in large amount as compared to land. Volcanic eruptions occurs in both early and Modern earth.

How does an amoeba breathe

Answers

Answer:

Amoebas have a semirigid layer of ectoplasm which absorbs oxygen from the surrounding water and eliminates carbon dioxide in a form of respiration.

Explanation:

hope this helps

See picture:
A.This is an example of a frameshift mutation.
B.This is an example of a missense mutation.
C.This is an example of a nonsense mutation.
D.This is an ayamole facilant mutation

Answers

Missense Mutation. A nucleotide was substituted for another- and most importantly- changes the final amino acid.

Which of the following strands is the correct complement to the strand ATC-GTC-CCA
GCA-GCA-AAG
TGG-GAC-GAT
CAG-CGA-TTG
TALCAG-GGT

Answers

Answer:TAG-CAG-GGT

Explanation:I just took the test and got it right

Uhm help pleaseeee. It's for bio but med students can help too!
5. Cystic fibrosis is a disease. Find out a little about what it does, whether it is dominant or recessive, and whether or not gender has any bearing on the risk of inheriting the disease. Report your findings here.

Answers

Explanation:

I found the answer I think ??

Answer:

Modes of inheritance of the altered gene can be autosomal dominant, autosomal ... In contrast, autosomal recessive disorders result in illness only if a person ... Examples of autosomal recessive disorders are cystic fibrosis (CF), Tay-Sachs disease, ... mutations have been identified, screening for all mutations is not feasible.

Explanation:

Which one below shows the 5 levels of environment in order from the simplest level to the most complex?


A. ecosystem, organism, community, population, biosphere

B. organism, community, population, ecosystem, biosphere

C. organism, population, community, ecosystem, biosphere

D. biosphere, ecosystem, community, population, organism

PLEASE PLEASE PLEASE GIVE ME ANSWER IM TAKING A TEST

Answers

The answer is C.
Organism, population, community, ecosystem, biosphere

Which statement describes a newton?
It exists only for objects on Earth.
Olt measures the mass of an object.
Olt reflects the amount of force an object exerts.
O It states that every object attracts another object.

Answers

Answer:

It reflects the amount of force an object exerts.  

What characteristics do mutations have? select all that apply.

omission of information
always harmful
addition of information
mistakes in copying
occasionally beneficial​

Answers

Mutations can be any but id say all besides always harmful or all of the above if that’s a choice

Answer:

all of above

Explanation:

The MAIN difference between terrestrial planets and gas giants is

Answers

Answer: i agree the answer is C

1. Which statement is scientifically accurate? A. "Don't let the cold energy out of the fridge!" b. "Don't let the energy into the fridge!" Explain in terms of energy transfer.

Answers

Answer:

The accurate statement is b. "Don't let the energy into the fridge!"

Explanation:

Heat is energy. Inside a fridge there is lower heat - lower energy - than the surroundings. The spontaneous transference of energy is always from a place with higher energy (hot) to a place with lower energy (cold). So, as the frigde is cold, the heat is transferred from the surroundings to the fridge.

During DNA replication what occurs

Answers

Answer:

What happens during DNA replication?

How is DNA replicated? Replication occurs in three major steps: the opening of the double helix and separation of the DNA strands, the priming of the template strand, and the assembly of the new DNA segment. During separation, the two strands of the DNA double helix uncoil at a specific location called the origin.

Explanation:

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