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2 years ago

Which statement describes a homogeneous catalyst?

Chemistry

2 answers:

vladimir1956 [14]2 years ago

7 0

Answer:

Explanation:

Alik [6]2 years ago

6 0

Answer:

it is in the same phase as the reactants

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Helpppp plzzzzzz it's due Monday :(

Murrr4er [49]

Answer: but thx for the points

Explanation:

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3 years ago

Does the number of electrons reaching the detector increase or decrease as you change the frequency?

velikii [3]

If you increase the frequency, the photon will have more energy and can therefore transfer more electrons to the other side. As such, you will have an increased current.

3 0

3 years ago

Gallium is produced by the electrolysis of a solution obtained by dissolving gallium oxide in concentrated NaOH(aq). Calculate t

Alina [70]

<u>Answer:</u> The mass of gallium produced by the electrolysis is 0.0354 grams.

<u>Explanation:</u>

The equation for the deposition of Ga(s) from Ga(III) solution follows:

$Ga^{3+}(aq.)+3e^-\rightarrow Ga(s)$

To calculate the total charge, we use the equation:

$C=I\times t$

where,

C = charge

I = current = 0.490 A

t = time required (in seconds) = $50\times 60=300s$ (Conversion factor: 1 min = 60 s)

Putting values in above equation, we get:

$C=0.490\times 300=147C$

To calculate the moles of electrons, we use the equation:

$\text{Moles of electrons}=\frac{C}{F}$

where,

C = charge = 147 C

F = Faradays constant = 96500

$\text{Moles of electrons}=\frac{147}{96500}=1.52\times 10^{-3}mol$

Now, to calculate the moles of gallium, we use the equation:

$\text{Moles of Gallium}=\frac{\text{Moles of electrons}}{n}$

where,

n = number of electrons transferred = 3

Putting values in above equation, we get:

$\text{Moles of Gallium}=\frac{1.52\times 10^{-3}}{3}=5.077\times 10^{-4}mol$

To calculate the mass of gallium, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$

Moles of Gallium = $5.077\times 10^{-4}mol$

Molar mass of Gallium = 69.72 g/mol

Putting values in above equation, we get:

$5.077\times 10^{-4}mol=\frac{\text{Mass of Gallium}}{69.72g/mol}\\\\\text{Mass of Gallium}=0.0354g$

Hence, the mass of gallium produced by the electrolysis is 0.0354 grams.

8 0

3 years ago

Illustrate: The Avogadro constant is so large it is normally written in scientific notation. To

omeli [17]

Answer:

602200000000000000000000

Explanation:

move the decimal place over 23 places to the right

4 0

3 years ago

Read 2 more answers

NH3 + CO2 + H2O → NH4HCO3 Balance this reaction if necessary. A) balanced B) 1, 1, 2, 1 C) 1, 2, 1, 2 D) 1, 2, 2, 2

Julli [10]

Answer:

NH3 + CO2 + H2O -> NH4HCO3

This equation is already balanced

4 0

3 years ago

Read 2 more answers