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3 years ago

HELP PLEASE What makes up most of an atom's volume, and where is it located?

1 answer:

4 0

Answer:Accounting for the sizes of protons, neutrons, and electrons, most of the volume of an atom—greater than 99 percent—is, in fact, empty space. ... The electrons that surround all atoms are negatively charged and cause atoms to repel one another, preventing atoms from occupying the same space.

Explanation: hope this helped

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The polymerization of amino acids produces:

Delicious77 [7]

Answer:

Proteins

Explanation:

Polymerization, in chemistry, is the chemical combination of monomeric units to form a polymer. Polymers are large molecules made up of smaller units called monomers. Amino acids are the monomeric units of proteins i.e. A protein is made up of of many amino acids joined together.

Therefore, the chemical combination of amino acids will form a peptide bond between the carbon atom of the acid group and nitrogen atom of the amine group in the structure of the amino acids. This is done by the loss of a water molecule. The continuous repetition of this polymerization process will form a chain called polypeptide, which is the PROTEIN.

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3 years ago

Brief report on the carbon cycle

Tamiku [17]

Answer:

Explanation:

The carbon cycle describes the process in which carbon atoms continually travel from the atmosphere to the Earth and then back into the atmosphere. Carbon is released back into the atmosphere when organisms die, volcanoes erupt, fires blaze, fossil fuels are burned, and through a variety of other mechanisms.

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3 years ago

A neutral atom of helium has 2 protons and _____ electrons. (Enter a whole number.)

Mariulka [41]

Answer:

2 electrons

Explanation:

Since the atomic structure is at it's neutral state

6 0

3 years ago

Give the nuclear symbol for the isotope of gallium, ga, that contains 40 neutrons per atom. Replace the question marks with the

Cerrena [4.2K]

The nuclear symbol of an element have three parts namely:

the symbol of an element
mass number of the element
atomic number of the element

The general representation is as:

$_{Z}^{A}X$

where X is the chemical symbol of the element, A is mass number of the element that is total number of neutrons and protons in the nucleus of an atom, and Z is atomic number of the element that is number of protons in the atom.

Element = Gallium, $Ga$ (given)

Number of neutrons = 40 (given)

Let the nuclear symbol be $_{?}^{?}Ga$ . So, we need to determine the values of "?" in the symbol.

Atomic number of Gallium, $Ga$ = 31

Since, atomic number = Number of protons.

So, number of protons of Gallium, $Ga$ = 31

Mass number = number of protons + number of neutrons

Substituting the values:

Mass number = $31+40 = 71$

So, the nuclear symbol is $_{31}^{71}Ga$ .

7 0

3 years ago

Which of the following aspects of biotechnology is not considered to be a moral or ethical issue

ryzh [129]

The question is incomplete, the complete question is;

Which of the following aspects of biotechnology is Not considered to be a moral or ethical issue?

a.research and testing on animals

b.cloning living material

c.reducing research cost

d.damaging the environment

Answer:

c.reducing research cost

Explanation:

Ethical issues arise when a particular course of action is at odds with the generally acceptable moral standard in the society.

Research and testing on animals is contested as an ethical issue by animal rights activists.

Cloning living material is prohibited among some sections of society and is also being contested as an ethical issue.

Damaging the environment the environment owing to biotechnology research is generally regarded as an ethical issue.

However, reducing research cost is highly acceptable in any research. It does not pose an ethical issue.

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3 years ago