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3 years ago

The system is said to be in dynamic equilibrium when:

Chemistry

1 answer:

777dan777 [17]3 years ago

4 0

Answer:

a) there is no longer any net change in the concentration of products and reactants

Explanation:

There is dynamic equilibrium when in a reversivble reaction stop changing your reagents / product ratio; but the substances move at an equal rate; System properties do not change over time.

The system is in dynamic equlibrium if it has all three types of equilibrium:

mechanic equilibrium: if there is no net force applied to the system
thermal equilibrium: constant temperature.
material equilibrium: the composition on the system does not change.

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One isotope of oxygen differs from another isotope of oxygen in *

Reptile [31]

Each isotope of Oxygen has a different number of neutrons

<h3>Further explanation </h3>

The elements in nature have several types of isotopes

Atomic mass is the average atomic mass of all its isotopes

Isotopes are atoms has the same number of protons but has a different number of neutrons.

So Isotopes are elements that have the same Atomic Number (Proton)

Some of the isotopes of oxygen are:

$\tt _8^{16}O,_8^{17}O,_8^{18}O$

Each isotope has 8 protons and 8 electrons but has a different number of neutrons

For O-16: number of neutrons = 16-8 = 8

For O-17: number of neutrons = 17-8 = 9

For O-18: number of neutrons = 18-8 = 10

4 0

2 years ago

A chemist measures the energy change ?H during the following reaction:

Leno4ka [110]

Answer:

(A) endothermic

(A) Yes, absorbed

Explanation:

Let's consider the following thermochemical equation.

2 Fe₂O₃(s) ⇒ 4 FeO(s) + O₂(g) ΔH = 560 kJ

Since ΔH > 0, the reaction is endothermic.

We can establish the following relations:

560 kJ are absorbed when 2 moles of Fe₂O₃ react.
The molar mass of Fe₂O₃ is 160 g/mol.

Suppose 66.6 g of Fe₂O₃ react. The heat absorbed is:

$66.6g.\frac{1mol}{160g} .\frac{560kJ}{2mol} =117kJ$

5 0

3 years ago

Which of the following is the best example of heat transfer by convection

Ugo [173]

B seems like the correct answer stay safe!

6 0

2 years ago

Increasing the volume of a sealed container will cause the gas particles within the container to.

Stella [2.4K]

Answer:

collide less often and with less force

3 0

1 year ago

Its chemistry: isotopes, elements, due Wednesday thanks

bulgar [2K]

Answer:

Science, Science, Science!

Explanation:

Reeeeeeeeeeeeeee

4 0

2 years ago