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3 years ago

14

The steps leading to an algal-bloom fish kill

1 answer:

adoni [48]3 years ago

3 0

Answer:

the bacteria increase in number and use up the dissolved oxygen in the water. When the dissolved oxygen content decreases, many fish and aquatic insects cannot survive. This results in a dead area. Algal blooms may also be of concern as some species of algae produce neurotoxins.Explanation:

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The source of alpha particles in a smoke detector is the

pantera1 [17]

The source of alpha particles in a smoke detector is the Americium.

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3 years ago

True or false: A skeleton equation in chemistry shows the relative amounts of all materials in the reaction

Neko [114]

Answer:

false im pretty sure.

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3 years ago

kondor19780726 [428]

Answer:

.156 M

Explanation:

diluting 25 to 100 cuts the M to 1/4 of the original

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2 years ago

Which statement tells what happens during the rock cycle when rocks undergo great heat and pressure? A. Igneous rock is formed.

balu736 [363]

<span>B. Metamorphic rock is formed</span>

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3 years ago

At 25°C and constant pressure, carbon monoxide gas combines with oxygen gas to give carbon dioxide gas with the evolution of 10.

stealth61 [152]

Answer : The value of $\Delta H$ for the reaction is, -565.6 kJ

Explanation :

First we have to calculate the molar mass of CO.

Molar mass CO = Atomic mass of C + Atomic mass of O = 12 + 16 = 28 g/mole

Now we have to calculate the moles of CO.

$\text{Moles of }CO=\frac{\text{Mass of }CO}{\text{Molar mass of }CO}=\frac{1g}{28g/mole}=\frac{1}{28}mole$

Now we have to calculate the value of $\Delta H$ for the reaction.

The balanced equation will be,

$2CO(g)+O_2(g)\rightarrow 2CO_2(g)$

From the balanced chemical reaction we conclude that,

As, $\frac{1}{28}mole$ of CO release heat = 10.1 kJ

So, 2 mole of CO release heat = $2\times 28\times 10.1=565.6kJ$

Therefore, the value of $\Delta H$ for the reaction is, -565.6 kJ (The negative sign indicates the amount of energy is released)

4 0

3 years ago