elements that has atoms of more than one molecular mass

Answers

Answer 1
The molar mass of an atom is simply the mass of one mole of its identical atoms. However, most of the chemical elements are found on earth not as one isotope but as a mixture of isotopes, so the atoms of one element do not all have the same mass.
Answer 2
For many of the chemical elements there are several known isotopes. Isotopes are atoms with different atomic masses which have the same atomic number. The atoms of different isotopes are atoms of the same chemical element; they differ in the number of neutrons in the nucleus.

Related Questions

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In a chemical reaction, the chemicals you start with (those in the rectangle) are called ____________________. The ones you end up with (in the circle) are called _________________________.

Answers

Answer:
reactant and product
the first one is reactant and the second is product because the product is what is formed from the reaction :) have a good day

If a cell with little hydrogen peroxide begins producing a large amount, what will happen to the rate at which the hydrogen peroxide is broken down

Answers

Answer:

Once you add more hydrogen peroxide to the solution, the reaction rate will increase as more substrate molecules can collide with the enzyme, forming more product. The result is an increasing amount of foam produced in your cup as you increase the amount of H2O2 in your reaction.

Explanation:

hopes this helps :)

Alexandra fleming was working with a bacteria called staphylococcus which looked like bunches of grapes under the microscope. He could grow colonies of these bacteria on petri dishes with a growth medium. If mold contains a substance that kills bacteria then...?

Answers

Answer:

In 1928, Sir Alexander Fleming was studying Staphylococcus bacteria growing in culture dishes. He noticed that a mold called Penicillium was also growing in some of the dishes. A clear area existed around the mold because all the bacteria that had grown in this area had died. In the culture dishes without the mold, no clear areas were present.

Fleming thought that the mold must be producing a chemical that killed the bacteria. He decided to isolate this substance and test it to see if it would kill bacteria. Fleming transferred the mold to a nutrient broth solution. This solution contained all the materials the mold needed to grow. After the mold grew, he removed it from the nutrient broth. Fleming then added the nutrient broth in which the mold had grown to a culture of bacteria. He observed that the bacteria died. He also added the same type of broth that had not been exposed to the mold, to a culture of the same type of bacteria. Nothing happened to the bacteria.

Explanation:

n 1928, Sir Alexander Fleming was studying Staphylococcus bacteria growing in culture dishes. He noticed that a mold called Penicillium was also growing in some of the dishes. A clear area existed around the mold because all the bacteria that had grown in this area had died. In the culture dishes without the mold, no clear areas were present.

Fleming thought that the mold must be producing a chemical that killed the bacteria. He decided to isolate this substance and test it to see if it would kill bacteria. Fleming transferred the mold to a nutrient broth solution. This solution contained all the materials the mold needed to grow. After the mold grew, he removed it from the nutrient broth. Fleming then added the nutrient broth in which the mold had grown to a culture of bacteria. He observed that the bacteria died. He also added the same type of broth that had not been exposed to the mold, to a culture of the same type of bacteria. Nothing happened to the bacteria.

Transpiration theory is.....
A.
Condensation of water

B.
Boiling of water in the leaf

C.
Evaporation of water in leaf

D.
Freezing of plant​

Answers

Answer:

C.

Explanation:

water is continuously evaporating from the surface of leaf cells exposed to air to cool the plant and access nutrients in the soil more efficiently.

In passive cell transport, substances move from _____ concentrations to
____ concentrations.

Answers

Answer:

Substances move from higher concentrations to lower concentration

Explanation:

Which of the following would be modeled by small particles made up of atoms of two kinds of elements?
A) gold
B) oxygen
C) neon
D) water

Answers

it’s D).. water!!! :)

The term that would be modeled by small particles made up of atoms of two kinds of elements is water. The correct option is D).

What are elements?

Chemical elements are the pure forms of substance that are present in the art surface or crust. There are 118 elements present in a periodic table there, arranged in the raising of their atomic number.

Water is a compound that is made from two elements, Oxygen, and hydrogen. There are two molecules of hydrogen and 1 molecule of oxygen in the water.

All others are elements like gold, oxygen, and neon. They are present in the periodic table they are pure substances, and they are single elements. They're not made up of 2 atoms or two kinds of elements.

Water is present on earth in three states liquid solid gas forms. It is the most important compound on the earth, all living organisms are made up of 90%.

Thus, the correct option is D). water.

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A high birthrate and a low death rate will lead to a population

A) fluctuation.

B) leveling off.

C) decline.

D) increase.

Answers

Answer:

the answer is D) increase

hope it

helps you

Diffusion of water across a selectively permeable membrane is called

Answers

Answer:

osmosis

Explanation:

it is because osmosis is the movement of water molecules from a lower concentrated region to a higher concentrated region through a semi permeable membrane


Which kind of metamorphosis is depicted in figure A?

Answers

simple metamorphosis

NEED ANSWER FAST!!!!

Answers

Answer:

A

Explanation:

Fill In The Blanks

Do it correctly Please...

troll and reported

Answers

What you already know:

There is two strains of DNA in most mammals including humans. There is a templete strain and a complementary strain. The base letters of DNA is ACGT. Because of the chemical make up of these molecules each base can only pair with one other molecule. A pairs with T, and C pairs with G.

When we translate to mRNA the base T is replaced with U. The pairing is now A&U and C&G

A researcher is viewing a cell that has cell walls. Which question would BEST help the researcher to narrow down the taxonomic group to which the cell belongs ?

Answers

Answer:

Does it have a nucleus?

Explanation:

Bacteria and Archaea have cell walls but no nuclei

Plant cells (Eukarya) have cell walls and a nucleus.

But remember not all eukaryotes have cell walls

Enzymes , last question pls help

Answers

Answer:

A

Explanation:

in the inner mitochondrial membrane, in contrast with most of the reactions of the citric acid cycle and fatty acid oxidation, which take place in the matrix.

Answer:A

Explanation:

Many plants have waxy coatings on some surfaces. This coating reduces water loss because it is not water permeable. This waxy coating is considered which biomolecule?

a.

lipid

c.

nucleic acid

b.

carbohydrate

d.

protein

Answers

Lipids are ubiquitous in plants. They store metabolic energy, protect against dehydration and pathogens, carry electrons, absorb light. Lipids also contribute to the structure of membranes.

Answer:

A. lipid I guess that is the answer

which is the theme of my antonia
Immigrants on the prairie.
Jim discovers more about human nature when he moves to town.
Daughters of Black Hawk merchants didn’t work very hard.
The American Dream is realized through hard work.

Answers

Answer:

d. the american dream is realized through hard work

Answer:

the answer is d

Explanation:

What is the plain of view in terms of a microscope?

Answers

Answer:

Field of view in Microscope

Explanation:

Field of View: Sometimes abbreviated "FOV", this is the diameter of the circle of light that you see when looking into a microscope. As the power increases, the field of view decreases.

Nikon Instruments B.V. is pleased to announce the release of NIS-Elements Clarify.ai, a new addition to Nikon’s growing suite of artificial intelligence (AI) tools for microscopy. Clarify.ai uses artificial intelligence to automatically remove blur from widefield fluorescence microscope images. Clarify.ai utilizes new Nikon technologies executed on graphic processing units (GPUs) to leverage fast and efficient clarity…

function and structure of leaf palisade cell

Answers

Explanation:

Palisade cells are a type of parenchyma cells that contain most of the chloroplasts in plant leaves. Given that they are located beneath the upper epidermis, palisade cells are well positioned to absorb light required for photosynthesis

The main function of the palisade cell is for the chloroplasts are to be able to absorb a large amount of light for photosynthesis. they also move around in the cytoplasm in order to maximise, the amount of light absorbed.

Structure of a palisade cell
Palisade cells contain the largest number of chloroplasts per cell, which makes them the primary site of photosynthesis in the leaves of those plants that contain them, converting the in light to the chemical energy of carbohydrates. for the plant
Beneath the palisade mesophyll are the spongy mesophyll cells, which also perform photosynthesis. They are irregularly shaped cells that have many intercellular spaces that allow the passage of gases, within the plant.

During glycolysis, what is the source of the chemical energy that is captured in ATP?


A. the chemical bonds in pyruvic acid

B. the chemical bonds in glucose

C. the nuclei of atoms in glucose

D. high-energy electrons in the cytoplasm

Answers

A

process in which glucose is broken down into two molecules of pyruvic acid
glycolysis

The study of the cell is called cell biology.

The correct answer to the question is option B which is the chemical bonds in glucose.

What is glycolysis?

The breakdown of glucose into pyruvic acid is called glycolysis.

According to the question, the source of the ATP is by breaking down the glucose molecule and forming the ATP by gaining the extra phosphate molecule.

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I NEEEWWDDDDDD HELPPPPPP PLSSSSSSSS

Answers

Answer:

im pretty sure it's the second option (external fertilization) and the last option (external development) because it said that they put sperm and eggs into the environment which therefore creates fertilized embryos that are free swimming and become part of the zooplankton. they are never being carried by the starfish so therefore it's all external. so external fertilization and external development.

Explanation:

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Results
Record your results in the table.

Dominant trait
Recessive trait
.
Red Eyes
Brown Eyes

Answers

Answer:

What are the genotypes

Explanation:

Assuming that the Brown eyes are dominant and in this case doesn't carry the recessive gene, we will make its genotype BB. And the red eyes can have the genotype rr

Punnet Square

    B              B

r      Br           Br

r       Br          Br    This shows a 100% chance of Brown eyes

If brown is dominant but in this case carries the recessive gene it will look like this PUnnet Square

   B      r

r    Br    rr

r   Br    rr

This means there is a 50/50 chance of it being brown or red

In a food chain, with each feeding relationship, the energy transferred from one organism to another will

pls help asap-

Answers

Answer:

Explanation:

In an ecosystem, the sequential chain of eating and being eaten is called a food chain. It is this process which determines how energy moves from one organism to another within the system. In a food chain, energy is transferred from one organism to another.

Answer:

The correct answer is decrease.

Explanation:

Name the 3 tests used to diagnose lactose intolerance.

Answers

Hydrogen breath test

Milk tolerance test

Small bowel biopsy

Lactose tolerance test

Which characteristic of water quality provides the most information regarding the health of a water system ?

Answers

The characteristic of water quality that provides the most information regarding the health of a water system is the presence of an indicator species.

What do you mean by Water quality?

Water quality may be defined as the state of the water, which consist of chemical, physical, and biological characteristics, usually with regard to its appropriateness for a particular intention such as drinking or swimming.

The presence of an indicator species reveals the actual condition of the biotic and abiotic state of the environment.

Therefore, the characteristic of water quality that provides the most information regarding the health of a water system is the presence of an indicator species.

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Help as fast as possible plz

Answers

Answer:23 sperm cell in humans42 zygote in monkeys24 zygote in humans48 egg cell in monkeys

Answer:

23 sperm cell in humans

42 zygote in monkeys

24 zygote in humans

48 egg cell in monkeys

Explanation:

In the presence of oxygen, energy is converted from glucose
into numerous ATP molecules during

Answers

Answer:cellular respiration

Explanation:

A "code" for organisms genetic makeup or allele combinations; this is found in our DNA/chemicals. A.phenotype B.Genetics C.Genotype

Answers

Answer:

Genotype

Explanation:

Explain the functions of the prefrontal cortex and their relationship to impulse control.

Answers

Answer:

The prefrontal cortex helps with Impulse control and learning to managing emotional reactions. The functions of prefrontal thoughts, whats good or bad,  controlling of urges.

Explanation:

Answer:

i agree with Coilsandfries

Explanation:

SOMEONE PLZ ANSWER ASAP!!!!
Which of these is true?
A
Viruses can live on their own.

B
Viruses are a type of cell.

C
Viruses need a host to survive.

D
Viruses spread disease through vaccines.

Answers

Answer:

C

Viruses need a host to survive.

Explanation:

How biomass converted into energy?

Answers

Answer:

Direct combustion is the most common method for converting biomass to useful energy. All biomass can be burned directly for heating buildings and water, for industrial process heat, and for generating electricity in steam turbines. Thermochemical conversion of biomass includes pyrolysis and gasification.

Explanation:

hope this helps :D

what is an autotroph that that transforms energy from the sun to make its own food and is eight letters long?​

Answers

Answer: producer

Explanation:

producers such as plants and algae make their own food from the sun through photosynthesis

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