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3 years ago

Which of the following best describes an empirical formula?

Chemistry

1 answer:

Monica [59]3 years ago

6 0

Answer:

Option C :

a chemical formula that shows the relative number of each type of atom in a molecule, using the smallest possible ratio

Explanation:

Empirical Formula:

Empirical formula is the simplest ration of atoms in the molecule but not all numbers of atoms in a compound.

So,

Tha ration of the molecular formula should be divided by whole number to get the simplest ratio of molecule

For Example

C₂H₆O₂ Consist of Carbon (C), Hydrogen (H), and Oxygen (O)

Now

Look at the ratio of these three atoms in the compound

C : H : O

2 : 6 : 2

Divide the ratio by two to get simplest ratio

C : H : O

2/2 : 6/2 : 2/2

1 : 3 : 1

So for the empirical formula the simplest ratio of carbon to hydrogen to oxygen is 1:3:1

So the empirical formula will be

Empirical formula of C₂H₆O₂ = CH₃O

So, Option C is correct :

a chemical formula that shows the relative number of each type of atom in a molecule, using the smallest possible ratio

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2 years ago

Which root word of the binary ionic compound ends with -ide

kondor19780726 [428]

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Explanation:-

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1. Positive ion or metal is written first.

2. The negative ion or non metal is written next and a suffix is added at the end of the negative ion. The suffix written is '-ide'.

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2 years ago

Which type of energy change causes a <br> leaf to grow

Leviafan [203]

Electromagnetic energy

Explanation:

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3 years ago

Nuclear scientists have synthesized approximately 1600 nuclei not known in nature. More might be discovered with heavy-ion bomba

Nesterboy [21]

I shall assume the following equations are the ones of interest as none was provided:

(a) 63 Li + 56 28Ni →?

(b) 40 20Ca + 248 96Cm→147 62Sm + ?

(d) 40 20Ca + 238 92U→70 30Zn + 4 10 n + 2?

I shall also assume in the following calculations that the mass number of the unknown products is 'a' and the atomic number of the unknown products is 'b'.

In balancing nuclear equations, we observe the following rules:

I. The total number of protons and neutrons in the products and reactants must be the same ( conservation of mass number, A ).

II. The total number of nuclear charges in the products and reactants must be the same ( conservation of atomic number, Z ).

For (a),

63 Li + 56 28Ni→?

Add mass number, A, of reactants = 6+56 = 62

Add atomic number, Z, of reactants = 3+28 = 31

A of reactants = A of unknown product = 62

and, Z of reactants = Z of unknown product = 31

Hence, unknown product is the element with Z as 31 = Ga

Balanced equation becomes:

63 Li + 56 28Ni → 62 31Ga

For (b),

40 20Ca + 248 96Cm→147 62Sm + ?

A of reactants = 40+248 = 288

A of products = 147 + 'a'

But A of reactants = A of products

288 = 147 + 'a'

‘a’ = 288 – 147 = 141

Also,

Z of reactants = 20 + 96 = 116

Z of products = 62 + 'b'

Z of reactants = Z of products

116 = 62 + 'b'

'b' = 116 – 62 = 54

So, unknown product is the element with Z = 54 = Xe

Balanced equation is:

40 20Ca + 248 96Cm→147 62Sm + 141 54Xe

For (c),

88 38Sr + 84 36Kr→116 46Pd + ?

A of reactants = 88 + 84 = 172

A of products = 116 + 'a'

But A of reactants = A of products

172 = 116 + 'a'

‘a’ = 172 – 116 = 56

Also,

Z of reactants = 38 + 36 = 74

Z of products = 46 + 'b'

Z of reactants = Z of products

74 = 46 + 'b'

'b' = 74 – 46 = 28

So, unknown product is the element with Z = 28 = Ni

Balanced equation is:

88 38Sr + 84 36Kr→116 46Pd + 56 28Ni

For (d),

40 20Ca + 238 92U→70 30Zn + 4 10 n + 2?

A of reactants = 40 + 238 = 278

A of products = 70 + (4 x 1) + (2 x 'a') = 70 + 4 + 2a = 74 + 2a

But, A of reactants = A of products

278 = 74 + 2a

2a = 278 – 74

2a = 204

'a' = 204/2 = 102

Also,

Z of reactants = 20 + 92 = 112

Z of products = 30 + (4 x 0) + (2 x b) = 30 + 0 + 2b = 30 + 2b

Z of reactants = Z of products

112 = 30 + 2b

2b = 112 – 30

2b = 82

‘b’ = 82/2 = 41

Therefore, unknown product is element with Z = 41 =Nb

Balanced equation is:

40 20Ca + 238 92U→70 30Zn + 4 10 n + 2 102 41Nb

8 0

3 years ago

Please help I need this

gizmo_the_mogwai [7]

This is going to be a true answer so put true

mark me brainliest

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2 years ago