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3 years ago

8

A small, rocky island is home to a community of organisms. They include birds,

1 answer:

In-s [12.5K]3 years ago

7 0

Brenda is correct!
Hope this helps!:)

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Number 1 please fast answer

Natasha2012 [34]

Answer:

I will give you 5

Explanation:

color chage, formation of a precipitate, formation of a gas, odor change, temperature change. are all signs of a chemical reaction

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3 years ago

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Tierra is playing in her backyard when she hears her friend calling out to her. She can't see her friend but can hear her friend

mixer [17]

Answer:

diffraction

Explanation:

the correct answer is diffraction

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3 years ago

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What is the pressure if 0.567 moles of gas occupy 4.5 liters at a temperature of 300.0 K?

kakasveta [241]

The answer is D. Use the equation PV=nRT
P=(.567mol)(.0821)(300K)/4.5L

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3 years ago

The acid HOCl (hypochlorous acid) is produced by bubbling chlorine gas through a suspension of solid mercury(II) oxide particles

sergejj [24]

<u>Answer:</u> The expression for equilibrium constant is $K_{eq}=\frac{[HOCl]^2}{[H_2O][Cl_2]^2}$

<u>Explanation:</u>

Equilibrium constant is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_{eq}$

For the general chemical equation:

$aA+bB\rightleftharpoons cC+dD$

The expression for $K_c$ is given as:

$K_c=\frac{[C]^c[D]^d}{[A]^a[B]^b}$

For the given chemical reaction:

$2HgO(s)+H_2O(l)+2Cl_2(g)\rightleftharpoons 2HOCl(aq.)+HgO.HgCl_2(s)$

The expression for $K_{eq}$ is given as:

$K_{eq}=\frac{[HOCl]^2[HgO.HgCl_2]}{[HgO]^2[H_2O][Cl_2]^2}$

The concentration of solid is taken to be 0.

So, the expression for $K_{eq}$ is given as:

$K_{eq}=\frac{[HOCl]^2}{[H_2O][Cl_2]^2}$

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4 years ago

Balance the equation by ion electron method

irina1246 [14]

Answer:i believe you are to decompose the formula (i think)

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3 years ago