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o-na [289]
3 years ago
12

Explain why an insoluble compound added to water is considered a nonelectrolyte.

Chemistry
1 answer:
DaniilM [7]3 years ago
8 0

Explanation:

A non-electrolyte is defined as a solution which does not contain any ions and hence, it is unable to conduct electricity.

For example, when a non-polar substance like CCl_{4} is dissolved in water then it will not dissociate into ions.  

As electricity is the flow of ions or electrons. So, a non-electrolyte solution is not able to conduct electricity.

Similarly, a compound that is insoluble in water will not dissociate into ions. Hence, this type of solution will not be able to conduct electricity.

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Why do we need an isolated system for the law of conservation of mass to be true?
Alex_Xolod [135]

Answer:

The law of conservation of mass states that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

7 0
3 years ago
Read 2 more answers
Why doesn't the density of the object change when you adjust the mass and volume of the objects?
Pachacha [2.7K]
Because as you change the mass the volume will change and as you change the volume the mass will change too, it's a constant ratio for each element. Mass and volume are not factors that affect the density. factors that affect the density are temperature and type of the material/element
6 0
3 years ago
Explain why atomic radius decreases as you move to the right across a period for main-group elements but not for transition elem
Korolek [52]

Atomic radius decreases across a period because valence electrons are being added to the same energy level at the same time the nucleus is increasing in protons. The increase in nuclear charge attracts the electrons more strongly, pulling them closer to the nucleus.

5 0
3 years ago
Hydrogen sulfide decomposes according to the following reaction: 2H2S(g) ⇋ 2H2(g) + S2(g) Kc=9.30x10-8 at 700.°C.If 0.45 mol of
Natalija [7]

Answer:

[H₂] = 1.61x10⁻³ M

Explanation:

2H₂S(g) ⇋ 2H₂(g) + S₂(g)

Kc = 9.30x10⁻⁸ = \frac{[H_{2}]^2[S_{2}]}{[H_{2}S]^2}

First we <u>calculate the initial concentration</u>:

0.45 molH₂S / 3.0L = 0.15 M

The concentrations at equilibrium would be:

[H₂S] = 0.15 - 2x

[H₂] = 2x

[S₂] = x

We <u>put the data in the Kc expression and solve for x</u>:

\frac{(2x^2) * x}{(0.15-2x)^2}=9.30x10^{-8}

\frac{4x^3}{0.0225-4x^2}=9.30*10^{-8}

We make a simplification because x<<< 0.0225:

\frac{4x^3}{0.0225} =9.30*10^{-8}

x = 8.058x10⁻⁴

[H₂] = 2*x = 1.61x10⁻³ M

5 0
3 years ago
Read 2 more answers
What mass of magnisium bromide is formed when 1.00 g of Mg + br
ella [17]

Mass of  Magnesium bromide : 5.76 g

<h3>Further explanation</h3>

Complete question

<em>What mass of  Magnesium bromide is formed when 1.00 g of magnesium reacts with 5.00 g of bromine?</em>

<em />

Reaction

<em />\tt Mg+Br_2\rightarrow MgBr_2<em />

mol Mg

\tt \dfrac{1}{24}=0.042

mol Br₂

\tt \dfrac{5}{160}=0.0313

Limiting reactants : Br₂(smaller)

mol MgBr₂ = mol Br₂=0.0313

mass MgBr₂ :

\tt 0.0313\times 184,113 =5.76~g

5 0
3 years ago
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