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Slav-nsk [51]
3 years ago
14

5. You have already seen how to calculate the number of moles given the mass of a

Chemistry
1 answer:
Sergio039 [100]3 years ago
8 0

Answer:

The additional information needed is the molarity of the solution.

Explanation:

Molarity is simply defined as the mole of solute per unit litre of the solution. It is represented mathematically as:

Molarity = mole /Volume

Mole = Molarity x Volume

From the simple illustration above,

If the molarity (mol/L or M) of the solution is known and the volume (L) is given, then, we can simply multiply the molarity and the volume together in order to obtain the number of mole in the solution.

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Help me with this question please
mash [69]

<u>Answer:</u>

a. Oxidising agent: Cl₂

b. Reducing agent: NaBr

c. Oxidised: NaBr

d. Reduced: Cl₂

e. Oxidation numbers before reaction: Cl= 0, Na= +1, Br= -1

f. Oxidation numbers after reaction: Cl= -1, Na= +1, Br= 0

<u>Explanation:</u>

Oxidising agents reduces themselves, oxidising other elements/compounds.

Reducing agents oxidise themselves, reducing other elements/compounds.

Oxidation is the <u>loss</u> of electrons or an <u>increase</u> in oxidation number.

Reduction is the <u>gain</u> of electrons or <u>decrease</u> in oxidation number.

6 0
2 years ago
What are the oxidation states of the atoms in a diatomic gas?
mafiozo [28]

Answer:

This is apparent charge, like water molecule is neutral having zero net charge

Explanation:

Simple and understood

4 0
3 years ago
Hello please please help me​
olga nikolaevna [1]

Answer:

            Option-A is the correct answer

Explanation:

Lithium belong to group 1 metals. Hence, it can loose one electron to form lithium ion i.e. Li⁺¹ or Li⁺

While, Nitrogen is non-metal and hence has the ability to gain the electron lost by lithium metal. Furthermore, Nitrogen can gain maximum 3 electrons to acheive noble gas configuration. Hence, three Li atoms will loose their electrons and Nitrogen will gain those three electrons to form nitride ion i.e. N³⁻.

4 0
2 years ago
_Cl2 + __KI → __KCI + __12
Snowcat [4.5K]

Answer:

Cl2 +2Kl ----->2KCL +I2

Explanation:

_Cl2 + __KI → __KCI + __I2

Cl2 +2Kl ----->2KCL +I2

8 0
3 years ago
What does the nucleus of the cell control?
dusya [7]

Answer:

Image result for What does the nucleus of the cell control?

The nucleus controls and regulates the activities of the cell (e.g., growth and metabolism) and carries the genes, structures that contain the hereditary information. Nucleoli are small bodies often seen within the nucleus.

Explanation:

7 0
3 years ago
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