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2 years ago

Which of the following is true of the figures below?

Chemistry

2 answers:

DedPeter [7]2 years ago

8 0

I believe the answer is B

V125BC [204]2 years ago

5 0

<h2>Answer:</h2>

The option C is the correct answer.

Which is fig. I is homogeneous mixture while fig. II is heterogeneous mixture.

<h3>Explanation:</h3>

Homogeneous mixture: A mixture of two or more substance which has same composition through out the mixture.
Heterogeneous mixture: A mixture of two or more substance which does not have the same composition through out the mixture.
Hence according to above definitions, option C is correct one.

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Basic molecules contain more ...

notsponge [240]

Answer:

Option C. hydroxide ions (OH-).

Explanation:

A base is a substance which dissolves in water to produce hydroxide ion (OH-) as the only negative ion. It therefore means that a base contains more hydroxide ions (OH-).

5 0

3 years ago

How many atoms are in Sodium, Carbon, Hydrogen, Oxygen, Fluorine, Boron, Lithium, Helium, Phosphorus and Sulfur?

vlada-n [284]

Sodium. 11
Carbon. 12
Hydrogen 1
Oxygen 2
Fluuorine. 14
Boron. 5
Lithium. 6
Helium 3
Phosphorus 15
Sulfur 6

6 0

3 years ago

Draw the best Lewis structure for CH 3 -1. What is the formal charge on the C?

djyliett [7]

Answer : The formal charge on the C is, (-1) charge.

Explanation :

Lewis-dot structure : It shows the bonding between the atoms of a molecule and it also shows the unpaired electrons present in the molecule.

In the Lewis-dot structure the valance electrons are shown by 'dot'.

The given molecule is, $CH_3^{-1}$

As we know that carbon has '4' valence electrons and hydrogen has '1' valence electron.

Therefore, the total number of valence electrons in $CH_3^{-1}$ = 4 + 3(1) + 1 = 8

According to Lewis-dot structure, there are 6 number of bonding electrons and 2 number of non-bonding electrons.

Now we have to determine the formal charge on carbon atom.

Formula for formal charge :

$\text{Formal charge}=\text{Valence electrons}-\text{Non-bonding electrons}-\frac{\text{Bonding electrons}}{2}$

$\text{Formal charge on C}=4-2-\frac{6}{2}=-1$

The formal charge on the C is, (-1) charge.

3 0

3 years ago

The mass of an atom is measured in a unit named the<br> ____. fill in the blank please helpppp

Volgvan

Answer: amu

Explanation: it stands for atomic mass unit and it is the measurement that’s used to measure the mass of atoms

5 0

3 years ago

Carbohydrates and proteins are built up from their basic building blocks by the ________.

user100 [1]

C, to form bonds between each monomers

4 0

3 years ago