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3 years ago

JOIN MY AMONG US GAME TELL ME IF YOU JOIN THE CODE IS QUVNDF PLEASE JOIN

Chemistry

2 answers:

vivado [14]3 years ago

5 0

Answer:

Ok im going to...

Explanation:

madam [21]3 years ago

4 0

Answer:

i thought i could but i can't because i have a computer :((

Explanation:

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3 years ago

PLEASE HELP FOR 15 BRAINY POINTS!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

evablogger [386]

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3 years ago

the rate constant for the decomposition of acetaldehyde, ch3cho, to methane, ch4, and carbon monoxide, co, in the gas phase is 1

Mademuasel [1]

The rate constant for the decomposition of acetaldehyde, CH₃CHO, to methane, CH₄, and carbon monoxide, CO, in the gas phase is 1.10 × 10² m⁻¹ s⁻¹ at 703.7 k and 4.90 x 10⁻² m⁻¹ s⁻¹ at 865 k.The activation energy for this decomposition in KJ/mole is 154.303

To determine the activation energy of a reaction (Ea) from two reaction rates (k₁ and k₂) at two different temperatures (T₁ and T₂).

we use the equation -

k₂ = Eₐ x ( 1 - 1 )

k₁ R T₁ T₂

Where,

R is the gas constant (8.3145 J/mol.K).

We have -

k₁= 1.10 x 10⁻² m⁻¹ s⁻¹

T₁= 703.7 K

k₂= 4.90 x 10⁻² m⁻¹ s⁻¹

T₂= 865 K

Putting the values in the equation -

4.90 x 10⁻² m⁻¹ s¹ = Ea x ( 1 - 1 )

1.10 x 10⁻² m⁻¹ s⁻¹ (8.3145 J/K.mol) 703.7 K 865 K

Ea = (4.90 x 10⁻² m⁻¹ s⁻¹) / ( 1 - 1 ) x (8.3145 J/K.mol)

1.10 x 10⁻² m⁻¹ s⁻¹ 703.7 K 851 K

Ea = 154303 J/mol

When divided by 1000,

Ea in KJ/mol = 154.303 KJ/mol

To learn more about activation energy,

brainly.com/question/8911926

#SPJ4

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1 year ago

Fill in the coefficients that will balance the following reaction:

bulgar [2K]

2Ca + 2CO2 + O2 → 2CaCO3

Hope it helps

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3 years ago

Read 2 more answers

The table shows a chemical equation and the dimensional analysis used by a student to calculate the number of moles of Ba3N2 req

UNO [17]

This problem is providing the chemical reaction whereby barium nitride reacts with water to produce barium hydroxide and ammonia, so the number of moles of barium nitride are required in order to produce 8.3 moles of ammonia. It asks for us to evaluate the student's setup, so we conclude the answer is C. "1 mol of NH3 should be replaced with 2 mol of NH3", according to:

<h3>Mole ratios:</h3>

In chemistry, stoichiometric calculations are used to figure out the moles or mass of a substance, given information about another one in the reaction. In this case, for the given chemical equation:

$Ba_3N_2 + 6H_2O \rightarrow 3Ba(OH)_2 + 2NH_3$

We evidence a 1:2 mole ratio of barium nitride to ammonia, for that reason, the student's setup:

$8.3 mol NH_3 * \frac{1 mol Ba_3N_2 }{1 mol NH_3}$

Is incorrect, because the ammonia must be accompanied by a 2 rather than the 1 it is given there:

$8.3 mol NH_3 * \frac{1 mol Ba_3N_2 }{2mol NH_3}$

Thereby, the correct answer is C. "1 mol of NH3 should be replaced with 2 mol of NH3"

Learn more about mole ratios: brainly.com/question/15288923

5 0

3 years ago