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posledela
2 years ago
15

What is the most specific classification of Ca(NO3)2

Chemistry
2 answers:
Cerrena [4.2K]2 years ago
7 0
"Compound" is the one among the following choices given in the question that is the <span>most specific classification of Ca(NO3)2. The correct option among all the options that are given in the question is the second option. It is actually an inorganic compound. I hope that this is the answer that has come to your help.</span>
NISA [10]2 years ago
7 0

Answer: Option (b) is the correct answer.

Explanation:

A compound is defined as the substance in which different atoms chemically combine together in a fixed ratio by mass.

For example, Ca(NO_{3})_{2} is a compound as here both calcium ion and nitrate ion chemically combine together.

A compound can be broken down into its constituent particles.

Whereas an atom is the smallest particle present in a substance. It is indivisible in nature.

A molecule is a substance that contains either same or different atoms which are chemically combined together.

For example, Cl_{2}, H_{2}O etc are molecules.

An element is a substance that consists of only same type of atoms.

For example, aluminium element will consists of only aluminium atoms.

Thus, we can conclude that compound is the most specific classification of Ca(NO_{3})_{2}.

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How many moles are in 3.4 x 10-7 grams of Silicon dioxide, SiO2?
Varvara68 [4.7K]

Answer:

Number of moles = 0.057 × 10⁻⁷  mol

Explanation:

Given data:

Mass of SiO₂ = 3.4 × 10⁻⁷ g

Number of moles = ?

Solution:

Number of moles = mass/molar mass

Molar mass of SiO₂ = 60 g/mol

by putting values,

Number of moles =  3.4 × 10⁻⁷ g / 60 g/mol

Number of moles = 0.057 × 10⁻⁷  mol

8 0
2 years ago
1. A student tried to solve the following problem by selecting the tile as shown. What, if anything, did the student do wrong?
slega [8]

Answer:

B. The student chose the correct tile, but needs to flip the tile to make the units cancel

Explanation:

Based on the reaction:

2AgNO₃(aq) + Cu(s) → 2Ag(s) + Cu(NO₃)₂ (aq)

<em>2 moles of AgNO₃ react per mole of Cu producing 2 moles of Ag and 1 mole of Cu(NO₃)₂</em>

Thus, if you want to produce 6.75moles of Cu(NO₃)₂ you need:

6.75moles of Cu(NO_3)_2  \frac{2 mol AgNO_3 }{1 mol Cu(NO_3)_2} = 13.50 moles of AgNO₃ are needed

Thus, if you analize the tile shown by the student:

<em>B. The student chose the correct tile, but needs to flip the tile to make the units cancel</em>

6 0
3 years ago
Which type of energy is stored in the nucleus of an atom?
Lapatulllka [165]
Nuclear energy is energy in the nucleus (core) of an atom. Atoms are tiny particles that make up every object in the universe. There is enormous energy in the bonds that hold atoms together. Nuclear energy can be used to make electricity.
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Explanation:

The scientific disciplines that are related to chemistry mentioned or alluded to in the article are:

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3 years ago
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olga55 [171]

Answer:

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