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3 years ago

What is the net ionic equation for magnesium chloride and potassium hydroxide?

Chemistry

1 answer:

Harlamova29_29 [7]3 years ago

8 0

KOH + MgCl2 → KCl + Mg(OH)2

KOH + KMnO4 + MgCl2 → Cl2 + K2MnO4 + Mg(OH)2

those are two different ones

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What is a process used to separate homogeneous mixtures using physical changes

navik [9.2K]

Answer:

Evaporation

Explanation:

with the help of evaporation , the liquid components are separated out from solid components easily .

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3 years ago

If a fish gets squirted with ink it will swim slower

Natali5045456 [20]

Answer:cool

Explanation:

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3 years ago

Hydrogen, a potential future fuel, can be produced from carbon (from coal) and steam by the following reaction: C(s)+2H2O(g)→2H2

madam [21]

The question is incomplete , complete question is:

Hydrogen, a potential future fuel, can be produced from carbon (from coal) and steam by the following reaction:

$C(s)+ 2 H_2O(g)\rightarrow 2H_2(g)+CO_2(g).\Delta H=?$

Note that the average bond energy for the breaking of a bond in CO2 is 799 kJ/mol. Use average bond energies to calculate ΔH of reaction for this reaction.

Answer:

The ΔH of the reaction is -626 kJ/mol.

Explanation:

$C(s)+ 2 H_2O(g)\rightarrow 2H_2(g)+CO_2(g).\Delta H=?$

We are given with:

$\Delta H_{H-O}=459 kJ/mol$

$\Delta H_{H-H}=432 kJ/mol$

$\Delta H_{C=O}=799 kJ/mol$

ΔH = (Energies required to break bonds on reactant side) - (Energies released on formation of bonds on product side)

$\Delta H=(4\times \Delta H_{O-H})-(2\times \Delta H_{H-H}+2\times\Delta H_{C=O})$

$=(4\times 459 kJ/mol)-(2\times 432 kJ/mol+2\times 799 kJ/mol$

$\Delta H=-626 kJ/mol$

The ΔH of the reaction is -626 kJ/mol.

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4 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

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4 years ago

Why is ice in a glacer considered to be a mineral but water a glacier is not

-Dominant- [34]

If you have a book, read it!! I promise you, it tells you this answer!

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3 years ago