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Ulleksa [173]
2 years ago
15

For the following following balance the equation and indicate the correct coefficients used. when Methanol (CH3OH) burns in oxyg

en, carbon dioxide, water and heat are produced.
Chemistry
1 answer:
Ahat [919]2 years ago
6 0

Answer:

CH₃OH + 1.5 O₂ ⇒ CO₂ + 2 H₂O

Explanation:

Let's consider the unbalanced chemical equation for the complete combustion of methanol.

CH₃OH + O₂ ⇒ CO₂ + H₂O

We will balance it using the trial and error method.

First, we will balance H atoms by multiplying H₂O by 2.

CH₃OH + O₂ ⇒ CO₂ + 2 H₂O

Finally, we get the balanced equation by multiplying O₂ by 1.5.

CH₃OH + 1.5 O₂ ⇒ CO₂ + 2 H₂O

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Does metals replace nonmetals in a compound
AlexFokin [52]

Answer:

A metal only replaces a metal, and a nonmetal only replaces a nonmetal. Only a more reactive element can replace the other element in the compound with which it reacts.

7 0
2 years ago
Read 2 more answers
At higher elevations, the boiling point of water decreases, due to the decrease in atmospheric pressure. As a result, what concl
White raven [17]
I believe the correct response is A. At higher elevations it would take less time to hard boil an egg, because there is less atmospheric pressure.
5 0
2 years ago
What volume of a 0.155 M potassium hydroxide solution is required to neutralize 25.7 mL of a 0.388 M hydrobromic acid solution
vekshin1

Answer: Therefore, the volume of a 0.155 M potassium hydroxide solution  is 56.0 ml

Explanation:

Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.

According to the neutralization law,

n_1M_1V_1=n_2M_2V_2

where,

M_1 = molarity of HBr solution = 0.338 M

V_1 = volume of HBr solution = 25.7 ml

M_2 = molarity of KOH solution = 0.155 M

V_2 = volume of KOH solution = ?

n_1 = valency of HBr = 1

n_2 = valency of KOH = 1

1\times 0.338\times 25.7=1\times 0.155\times V_2

V_2=56.0ml

Therefore, the volume of a 0.155 M potassium hydroxide solution  is 56.0 ml

8 0
2 years ago
A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the f
viva [34]

Answer: -2.373  x 10^-24J/K(particles

Explanation: Entropy is defined as the degree of randomness of a system which is a function of the state of a system and depends on the number of the random microstates present.

The entropy change for a particle in a system  depends on the initial and final states of a system and is given by Boltzmann equation as  

S = k ln(W) .

where S =Entropy

K IS Boltzmann constant ==1.38 x 10 ^-23J/K

W is the number of microstates available to the system.

 The  change in entropy is given as

S2 -S1 = kln W2 - klnW1

dS = k ln (W2/W1)

where w1 and w2 are initial and final microstates

from the question, W2(final) = 0.842 x W1(initial), so:

= 1.38*10-23 ln (0.842)

=1.38*10-23  x -0.1719

= -2.373  x 10^-24J/K(particles)

4 0
3 years ago
How many moles of Na3PO4 are in 820. grams of it?
kotegsom [21]

Answer:Hello

D is correct

Explanation:

4 0
2 years ago
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