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3 years ago

_ _ _ _ _ P _ _ _ _ _ _ _ mediums allow light to pass through

Chemistry

1 answer:

koban [17]3 years ago

5 0

Answer:

I thought the answer was " T R A N S P A R E N T " but I don't know what the extra two letters are! I'm sorry, that's all I've got..

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Consider the following reversible reaction.

andriy [413]

Answer:

No one is correct. The correct expression is:

Keq = [H₂]² . [O₂]² / [H₂O]²

Explanation:

To build the Keq expression in a chemical equilibrium you must consider the molar concentrations of reactants / products, and they must be elevated to the stoichiometric coefficient.

The balance reaction is:

2 H₂O (g) ⇄ 2 H₂ (g) + O₂ (g)

Keq = [H₂]² . [O₂] / [H₂O]²

In opposite side: 2 H₂ (g) + O₂ (g) ⇄ 2 H₂O (g)

Keq = [H₂O]² / [H₂]² . [O₂]

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3 years ago

Match these items with their examples.

postnew [5]

Salt=compound, soda=liquid solution, aluminum foil=element, milk=colloid,
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Which of the following is used for chemical symbols today? a. drawings c. letters b. icons d. numbers

devlian [24]

Answer:

Letters

Explanation:

For example, today we use the periodic table which is full of elements named with 1 or 2 letters. Like how Helium is He and Sodium is Na. Hope this helps!!!

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3 years ago

Which best describes electromagnetic waves moving from gamma rays to radio waves along the electromagnetic spectrum?

snow_lady [41]

When a wave is moving from gamma rays to radio waves, this means that the frequency is decreasing whereas the wavelength is increasing in value.Thank you for your question. Please don't hesitate to ask in Brainly your queries.

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What are the common units for expressing solution concentration?

Ira Lisetskai [31]

It would be mol/dm^3 Formula of concentration: (no. of moles/volume of solution in dm^3) 1 cm^3 = 0.001dm^3 Hope this helped. :)

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3 years ago

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___ ___ ___ ___ ___ P ___ ___ ___ ___ ___ ___ ___ mediums allow light to pass through

_ _ _ _ _ P _ _ _ _ _ _ _ mediums allow light to pass through