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3 years ago

Anthony's homework assignment is to demonstrate that an orange has already undergone a chemical change. Which of the following

Chemistry

2 answers:

wolverine [178]3 years ago

8 0

B. Rotten orange is the correct answer. Hope this helps!

Wittaler [7]3 years ago

5 0

I agree, it’s B because you can’t change a rotten orange back into a fresh orange.

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If the reaction N2 (g) + 3 H2 (g) --> 2 NH3 (g) has the concentrations 1.1 M for nitrogen, 0.75 M for hydrogen and 0.25 M fo

Luba_88 [7]

Answer: The value of $K_c$ is 0.136 and is reactant favored.

Explanation:

Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as $K_{c}$

For the chemical reaction between carbon monoxide and hydrogen follows the equation:

$N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g)$

The expression for the $K_{c}$ is given as:

$K_{c}=\frac{[NH_3]^2}{[N_2][H_2]^3}$

We are given:

$[NH_3]=0.25M$

$[H_2]=0.75M$

$[N_2]=1.1M$

Putting values in above equation, we get:

$K_c=\frac{(0.25)^2}{1.1\times (0.75)^3}$

$K_c=0.135$

There are 3 conditions:

When $K_{c}>1$ ; the reaction is product favored.
When $K_{c}$ ; the reaction is reactant favored.
When $K_{c}=1$ ; the reaction is in equilibrium.

For the given reaction, the value of $K_c$ is less than 1. Thus, the reaction is reactant favored.

Hence, the value of $K_c$ is 0.136 and is reactant favored.

4 0

3 years ago

What food molecules make up lettuse

uysha [10]

Lettuce
Vegetable.
Leaf lettuce.
Head lettuce.
Romaine lettuce.
Asparagus lettuce

6 0

3 years ago

Which element has Atoms with the strongest association for electrons in A chemical bond

Marat540 [252]

The most electronegative element will have atoms with strongest association for electrons. Electronegativity is the ability of an atom to attract electrons and form bonds with electrons. . In the periodic table the left hand side favors the loss of electrons because less energy is required to lose an electron than to gain an electron. On the other han, the right hand side favors gaining electrons since less energy is required than when losing electrons.

Henceforth, from left to right in the periodic table the tendency to gain electrons increases. In contrast, going down a group there is decreased association for electrons, because atomic radius increases which suggests that valence electrons are further away from the nucleus.This makes fluoride the ion with strongest association of electrons. The noble gases have a complete shell so cannot attract electrons to themselves, which means they have no electronegativity.

6 0

3 years ago

The nucleus of most atoms is composed of which of the following sub-atomic particles?

____ [38]

Answer:

C. Tightly packed protons and neutrons

Explanation:

It consists of two sub-atomic particle namely proton and neutron.

This dense nucleus is responsible for most of the mass of atom.

8 0

3 years ago

Read 2 more answers

Which determines whether the fire will have open flames?

pentagon [3]

Which determines whether the fire will have open flames?

flash point - this is not the answer as it only denotes the minimum temperature required for vapors of something combustible will ignite
exothermic energy - is the energy released during the combustion reaction so this is not the answer
type of fuel - is not the general answer

The answer is fuel-air mix as it will determine the vigor of the flame.

4 0

3 years ago