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3 years ago

Most molecules that contain carbon are _____?

2 answers:

hjlf3 years ago

7 0

<span>Most molecules containing carbon are organic. All organic compounds, from basic elements through complex living creatures, contain some degree of carbon, which is one of the most basic components of any organic molecule.</span>

Tema [17]3 years ago

5 0

Answer: Most molecules that contain carbon are organic.

Explanation:

Organic molecules are the molecules in which are majorly composed of carbon atoms.

All the flora fauna are made up cell (fundamental unit of life).
For examples : Cells are made up of proteins and lipids which contains amino acids. And these amino acids are majorly composed of carbon atoms.

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2 years ago

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Question 8 Saved Which of the following energy transformations occurs when you eat a hamburger? Question 8 options: The chemical

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The first one is the answer.

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3 years ago

What is an example of an electrolyte solution?

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Answer:

nacl with water

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3 years ago

What effect does mass have on an objects density?

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3 years ago

Write the symbol for each of the following ions:

kap26 [50]

Answer:

a) $_{31}^{71}\textrm {P^{3+}}$

b) $_{35}^{80}\textrm {Br^{-}}$

c) $_{90}^{232}\textrm {Th^{4+}}$

d) $_{38}^{87}\textrm {Sr^{2+}}$

Explanation:

For neutral atoms:

Atomic Number (Z)= number of protons = number of electrons

Mass number (A) = number of protons + number of neutrons

For ions with positive net charge:

Number of protons = Z + net charge

For ions with negative net charge:

Number of protons= Z - net charge

a) A = 71, Charge = +3

Number of electrons = 28

Number of protons = 28 +3 =31

$_{31}^{71}\textrm {P^{3+}}$

b) A = 35, Z = 45+35=80, Charge = -1

Number of protons =35

Number of neutrons = 45

Number of electrons = 36

Charge = Number of protons- Number of electrons =35-36 = -1

$_{35}^{80}\textrm {Br^{-}}$

c) Charge = +4

Number of electrons = 86

Number of protons = Z = 86+4 = 90

mass number = A = 90+142 = 232

$_{90}^{232}\textrm {Th^{4+}}$

d) Charge = +2

Atomic number = Number of protons = Z = 38

mass number = A = 87

$_{38}^{87}\textrm {Sr^{2+}}$

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3 years ago