How might someone dispute the results of your investigation? How might you counter the argument?

Can someone plzzz help me with this numbers 1-13 plzz show work plzzz due tomorrow I need help I’ll give brainliest

ipn [44]

Explanation:

Question 1:

We have to use the aid of the periodic table to solve this problem and decipher some of the species.

The number of protons is the number of positively charged particles. It the same as the atomic number.

Number of electrons is the number of negatively charged particles.

Neutrons do not carry any charges.

Mass number = number of protons + number of neutrons

Solving:

Symbol #atomic #protons #electrons #neutrons mass# atomic mass

Fe 26 26 26 30 56 55.8

As³⁺ 33 33 36 42 75 74.9

Ag 47 47 47 61 108 107.9

I¹⁻ 53 53 54 74 127 126.9

K 19 19 19 20 39 39.1

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Atomic number brainly.com/question/2057656

Question 2:

An ion is an atom that has either lost or gained electron.

A positively charged ion is one that has lost electrons and the number of protons is now more. They are called cation

A negatively charged specie is one that has gained electrons and the number of electrons are now more. They are called anions.

Mass number is the superscript = Number of protons + number of neutrons

Atomic number = number of protons = number of electrons for neutral atoms

Species:

₇¹⁴N³⁻

Number of protons = 7

Number of electrons = 7 + charge = 7+ 3 = 10

Number of neutrons = 14 - 7 = 7

¹¹²₄₈Cd²⁺

Number of protons = 48

Number of electrons = 48 -2 = 46

Number of neutrons = 112 - 48 = 64

⁶⁴₂₉Cu

Number of protons = 29

Number of electrons = 29

Number of neutrons = 64 - 29 = 35

¹¹⁹₄₄Sn⁴⁺

Number of protons = 44

Number of electrons = 44 - 4 = 40

Number of neutrons = 119 - 44 = 75

¹⁹₉F⁻

Number of protons = 9

Number of electrons = 9+ 1 = 10

Number of neutrons = 19 - 9 = 10

learn more:

Number of protons, neutrons and electrons brainly.com/question/2757829

Question 3:

Mass number

The number 79 in Se - 79 specifies the mass number of the element. It suggests that Se is the number 34 element on the periodic table.

The periodic table arranges elements based on their atomic number.
The atomic number is the number of protons in an atom
Every atoms has a unique atomic number which makes them different from other atoms.
In neutral atoms, the atomic number is the same as the number of protons and the number of electrons in an atom.
The mass number is the number of protons plus neutrons of an atom.

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Mass of proton brainly.com/question/4999318

Question 4:

Number of protons = 14

Atomic structure:

²⁸₁₄Si

In this atom designated above Si is the symbol of Silicon, the fourteenth element in the periodic table.
The superscript 28 is the mass number of the atom
The mass number is the number of protons and neutrons in the nucleus of the atom.
It is also called the nucleon number because protons and neutrons are nucleons.
The subscript 14 is the atomic number.
It is the number of protons in the atom.
For neutral atoms, it is also the number of electrons

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Number of protons, neutrons and electrons brainly.com/question/2757829

Question 5:

The total number of subatomic particles = 289

Structure is ²⁰⁷₈₂Pb

The subatomic particles in an atom are protons, neutrons and electrons
Protons are the positively charged particles in an atom
Neutrons have no charge
Electrons carry negative charges

In the atom above, since it is neutral, the number of protons = number of electrons

Number of protons = atomic number

This is the subscript;

Number of protons = 82

Number of electrons = 82

Number of neutrons = mass number - atomic number

Mass number is the superscript

Number of neutrons = 207 - 82 = 125

The total number of subatomic particles = number of protons + number of neutrons + number of electrons

Total number of subatomic particles = 82 + 82 + 125 = 289

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protons, neutrons and electrons brainly.com/question/2757829

Question 6:

29

Given parameters :

Number of neutrons = 31

Mass number = 59

Unknown:

Atomic number = ?

Solution:

The mass number of an atom is the number of protons and neutrons it contains.

The mass of an atom is concentrated in the nucleus and this is where we derive the mass number from;

Mass number = number of protons + number of neutrons

Number of protons = 59 - 31 = 28

The number of protons in an atom is the same as the atomic number.

Atomic number = 28

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Atomic number brainly.com/question/2057656

Question 13 remainder;

When sodium loses an electron, the number of protons will be more than that of electrons

It then becomes an ion;

Number of protons = 11

Number of electrons = 11 - 1 = 10 Charge = 11 - 10 = 1+

With a loss of one electron, sodium will now resemble Ne more closely because it has a stable configuration.

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7 0

3 years ago

What are the science definitions of these

Alecsey [184]

Answer:

Eon-an indefinite and very long period of time, often a period exaggerated for humorous or rhetorical effect.

Era

Paleozoic-its end was marked by mass extinctions

mesozoic-between cenozoic and paleozoic

cenozoic- most recent era

period-a length of time

epoch-age

mass extinction- a huge die off of animals

landbridge- a strip of land connecting two large land masses

geographic isolation-island

Explanation:

3 0

3 years ago

Below is a list of the first 10 residues of the B helix in myoglobin from different organisms.

max2010maxim [7]

Answer:

i dont knoiwxplanation:

8 0

3 years ago

Suppose the half-life is 9.0 s for a first order reaction and the reactant concentration is 0.0741 M 50.7 s after the reaction s

bazaltina [42]

<u>Answer:</u> The time taken by the reaction is 84.5 seconds

<u>Explanation:</u>

The equation used to calculate half life for first order kinetics:

$k=\frac{0.693}{t_{1/2}}$

where,

$t_{1/2}$ = half-life of the reaction = 9.0 s

k = rate constant = ?

Putting values in above equation, we get:

$k=\frac{0.693}{9}=0.077s^{-1}$

Rate law expression for first order kinetics is given by the equation:

$k=\frac{2.303}{t}\log\frac{[A_o]}{[A]}$ ......(1)

where,

k = rate constant = $0.077s^{-1}$

t = time taken for decay process = 50.7 sec

$[A_o]$ = initial amount of the reactant = ?

[A] = amount left after decay process = 0.0741 M

Putting values in equation 1, we get:

$0.077=\frac{2.303}{50.7}\log\frac{[A_o]}{0.0741}$

$[A_o]=3.67M$

Now, calculating the time taken by using equation 1:

$[A]=0.0055M$

$k=0.077s^{-1}$

$[A_o]=3.67M$

Putting values in equation 1, we get:

$0.077=\frac{2.303}{t}\log\frac{3.67}{0.0055}\\\\t=84.5s$

Hence, the time taken by the reaction is 84.5 seconds

6 0

4 years ago

If a sample of a different compound decomposes into 0.429 g of carbon and 0.571 g of oxygen, what is its ratio of the mass of o

EastWind [94]

Ratio is the relationship between two number indicating how many times the first number containing the second number.
The ratio of carbon to oxygen is as follows
0.429 :0.571
multiply 1000 to remove the decimals
therefore the ratio of mass of carbon to mass of oxygen =429:571

6 0

3 years ago

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