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3 years ago

Explain what an ecosystem would look like without scavengers and decomposers.

1 answer:

6 0

Nitrogen and phosphorous would be trapped in dead remains and nutrients wouldn't return. Lots of dead material everywhere. Life would likely not continue due to lack of nutrients

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Which equation represents the reaction of acetic (ethanoic) acid with water?

xz_007 [3.2K]

Chemical equation:

CH₃COOH + H₂O = CH₃COO⁻ + H₃O⁺

hope this helps!

5 0

3 years ago

Ethylene C2H2 reacts with Oxygen according to the equation below.what volume of Oxygen (in dm3) reacts with 0.40 dm3 of C2H2 ?

seraphim [82]

The answer is (2) 1.0 dm3. In a balanced equation, the ratio of the mole number of the compounds is equal to the coefficients. And the ratio of volume of gas is equal to the mole number under same condition. So the answer is 1.0 mol.

3 0

3 years ago

What is the difference between alectronegativity and ioniztion energy

s344n2d4d5 [400]

Electronegativity is the tendency of the element to attract shared pair of electron towards itself in bonded condition.
Ionisation enrgy is the amount of energy required to remove the outermost electron from neutral gaseous atom

5 0

3 years ago

Why doesn't benzaldehyde undergo a self aldol condensation?

Vladimir79 [104]

Actually the main reason being benzaldehyde completely lacks alpha hydrogen within its whole structure and then this alpha hydrogen is the only hydrogen adjacent to the carbon from the carbonyl group, hence it will not undergo a self aldol condensation at all.

5 0

4 years ago

What volume of 6.9 M NaOH is needed to completely titrate 0.42 L of 2.39 M phosphoric acid according to

kirill115 [55]

Taking into account the definition of molarity and the stoichiometry of the reaction, the correct option is option C) 0.44 L of 6.9 M NaOH is needed to completely titrate 0.42 L of 2.39 M phosphoric acid.

The balanced reaction is:

H₃PO₄ (aq) + 3 NaOH (aq) → Na₃PO₄ (aq) + 3 H₂O(aq)

Then, by stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction), the following amounts of moles of each compound participate in the reaction:

H₃PO₄: 1 mole
NaOH: 3 moles
Na₃PO₄: 1 mole
H₂O: 3 moles

Molarity is the number of moles of solute that are dissolved in a given volume.

Molarity is determined by:

$Molarity=\frac{number of moles of solute}{volume}$

Molarity is expressed in units $\frac{moles}{liter}$ .

In this case, 0.42 L of 2.39 M phosphoric acid reacts. So, by definition of molarity, the number of moles that participate in the reaction is calculated as:

$2.39 \frac{moles}{liter}=\frac{number of moles of phosphiric acid}{0.42 liters}$

Solving:

number of moles of phosphiric acid= 2.39 $\frac{moles}{liter}$ * 0.42 liters

number of moles of phosphiric acid= 1.0038 moles ≅ 1 mole

Approaching 1 mole of the amount of phosphoric acid required, then by stoichiometry of the reaction, 3 moles of NaOH are necessary to react with 1 mole of the acid.

Then by definition of molarity and knowing that 6.9 M NaOH is needed, you can calculate the necessary volume amount of NaOH by:

$6.9 \frac{moles}{liter} =\frac{3 moles}{volume}$

Solving:

6.9 $\frac{moles}{liter}$ * volume= 3 moles

$volume=\frac{3 moles}{6.9\frac{moles}{liter} }$

volume= 0.44 L

The correct option is option C) 0.44 L of 6.9 M NaOH is needed to completely titrate 0.42 L of 2.39 M phosphoric acid.

Learn more about molarity with this example: brainly.com/question/15406534?referrer=searchResults

5 0

3 years ago