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qaws [65]
3 years ago
6

During a reaction 24 cubic cm of carbon dioxide was given off. After 8 minutes no more gas was produced and the reaction was com

plete. What was the rate of this reaction
Chemistry
2 answers:
yuradex [85]3 years ago
7 0

Answer:

Explanation:

Given parameters:

Volume of CO₂ = 24cm³

time taken for the reaction to complete = 8minutes.

Unknown:

rate of reaction

Soution

The reaction rate is a measure of speed of a chemical reaction. It is often calculated using the expression below:

    Reaction rate = \frac{change in concentration of reactant/product}{time taken}

   Reaction rate = \frac{24}{8} = 3cm³/min

In this reaction, 3cm³ of carbon dioxide were produced per minute

PIT_PIT [208]3 years ago
6 0

Answer:

Rate of the reaction = 3cm³/min

Explanation:

The rate of a reaction is essentially the speed at which the reaction proceeds. It is expressed in terms of the amount of reactants consumed or the amount of product formed.

Mathematically, it is the ratio of the change in concentration over a certain time period.

Rate = \frac{d[concentration]}{dt}

For the given reaction the initial concentration of carbon-dioxide = 0

Final concentration = 24 cm³

Change in concentration = Final - initial = 24 cm³

Time period = 8 min

Rate = \frac{24cm^{3} }{8min} = 3 cm^{3}/min

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Answer:

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Students 1 and 2 have precise measures yet is is not accurate since they measure around 5.

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Is cotton a synthetic material or a natural material? and why not​
Svet_ta [14]

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A mystery element contains 11 electrons. Which group of the periodic table will it belong to?
serious [3.7K]
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GenaCL600 [577]

Answer:

CN^- is a strong field ligand

Explanation:

The complex, hexacyanoferrate II is an Fe^2+ specie. Fe^2+ is a d^6 specie. It may exist as high spin (paramagnetic) or low spin (diamagnetic) depending on the ligand. The energy of the d-orbitals become nondegenerate upon approach of a ligand. The extent of separation of the two orbitals and the energy between them is defined as the magnitude of crystal field splitting (∆o).

Ligands that cause a large crystal field splitting such as CN^- are called strong field ligands. They lead to the formation of diamagnetic species. Strong field ligands occur towards the end of the spectrochemical series of ligands.

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5 0
3 years ago
how many moles of an ideal gas would occupy a 25.0 liter container when the temperature is 295 K and the pressure is 0.850 atm?
BlackZzzverrR [31]

Answer:

Required number of moles of ideal gas is 0.877 moles.

Explanation:

Pressure (P) = 0.850 atm

Temperature (T) = 295 K

Volume (V) = 25 ltr

Universal gas constant (R) = 0.0821

no of moles (n) = ?

we have the ideal gas equation as:

                           PV= nRT

                or, 0.850× 25 = n × 0.0821 × 295

                or, n = 0.877 moles

Hence the required number of moles of an ideal gas is 0.877 moles.

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3 years ago
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