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Salsk061 [2.6K]
3 years ago
15

The calvin cycle: A).Was named after an american biochemist B).does not require light energy to work C).produces glucose and wat

er D). All of the above
Chemistry
1 answer:
Lisa [10]3 years ago
8 0
D) all of the above
A, B, and C are true
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What is the relationship between developed land, population and resource use?
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Explanation:

While both developed and developing countries have contributed to global environmental problems, developed countries with 85% percent of the gross world product and 23% of its population account for the largest part of mineral and fossil-fuel consumption, resulting in significant environmental impacts

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Functions of the following ingredients in the production of dairy products.ii. Enzyme in cheese​
Serjik [45]

Answer:

sugar in melk

Explanation:

cow eat sugar then make sugar :)

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3 years ago
I’m confused on this what do I do??
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yes

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The chemical symbol of several elements are given below. Determine the atomic number of each element. Chemical Atomic Number Sym
spayn [35]

<u>Explanation:</u>

Atomic number is defined as the number of protons or electrons that are present in a neutral atom.

Atomic number = number of protons = number of electrons

Mass number is defined as the sum of number of protons and neutrons that are present in an atom.

Mass number = Number of protons + Number of neutrons

The isotopic representation of an atom is: _Z^A\textrm{X}

where,

Z = Atomic number of the atom

A = Mass number of the atom

X = Symbol of the atom

  • <u>For A:</u>

1) Fe

The atom given to us is iron. It is present in Group 8 and period 4 of the periodic table. The atomic number of iron is 26

2) Be

The atom given to us is beryllium. It is present in Group 2 and period 2 of the periodic table. The atomic number of beryllium is 4

3) Kr

The atom given to us is krypton. It is present in Group 18 and period 4 of the periodic table. The atomic number of iron is 36

  • <u>For B:</u>

1) _{24}^{53}\textrm{Cr}

Atomic number = Number of protons = Number of electrons = 24

Mass number = 53

Number of neutrons = 53 - 24 = 29

The number of protons, electrons and neutrons for the given element are 24, 24 and 29 respectively

2) _{44}^{103}\textrm{Ru}

Atomic number = Number of protons = Number of electrons = 44

Mass number = 103

Number of neutrons = 103 - 44 = 59

The number of protons, electrons and neutrons for the given element are 44, 44 and 59 respectively

3) _{30}^{67}\textrm{Zn}

Atomic number = Number of protons = Number of electrons = 30

Mass number = 67

Number of neutrons = 67 - 30 = 37

The number of protons, electrons and neutrons for the given element are 30, 30 and 37 respectively

  • <u>For C:</u>

1) Atomic number = 14; Mass number = 28

The element having atomic number '14' is Silicon

The isotopic symbol of the element is _{14}^{28}\textrm{Si}

The symbol of the element is 'Si'

2) Atomic number = 18; Mass number = 40

The element having atomic number '18' is Argon

The isotopic symbol of the element is _{18}^{40}\textrm{Ar}

The symbol of the element is 'Ar'

3) Atomic number = 19; Mass number = 39

The element having atomic number '19' is Potassium

The isotopic symbol of the element is _{19}^{39}\textrm{K}

The symbol of the element is 'K'

5 0
3 years ago
What characteristics of sodium and chlorine atoms allow them to form the stable compound sodium chloride, Also known as table sa
katrin2010 [14]
Atoms 'like' to have 8 valence electrones. sodium has one electron 'in excess' and chlorine 'lacks' in one. so they just exchange :) both are happy. then the ionic bond is formed because chlorine is now charged negative (additional electron) and sodium is charged positive (gave up one electrone) - the opposite charges cause electrostatic pull. many atoms, many bonds and thats how salt is built.
3 0
3 years ago
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