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3 years ago

If I have one mole of gold atoms, how many gold atoms do I have?

Chemistry

2 answers:

Bad White [126]3 years ago

5 0

Answer:

I hope it's helpful for you....

Explanation:

There are 6.022 X 1023 atoms in one mole of gold.

yuradex [85]3 years ago

3 0

Answer:

6.022 X 10^23

Explanation:

avatars number states that for every mole of an element there are 6.p22 X 10^23 atoms of that element

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How many atoms of oxygen are in 4.00 moles of N2O5

SVETLANKA909090 [29]

Answer:

there are 20 oxygen atoms in 4.00 moles of Dinitrogen pentoxide

Explanation:

there are 2 atoms in an oxygen molecule , so each oxygen molecules has at least 2. Dinitrogen pentoxide is N2O5, which has 7 atoms, 2 nitrogen and 5 oxygen. 1 molecule of N2O5 has 5 oxygen atoms, so 4 of then would be 20

8 0

3 years ago

Experiments, ATOMS, plz answer, and thx for your help

aalyn [17]

Yuppppp they are absolutely rightt

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3 years ago

The is the si unit that expresses the amount of substance. Specifically, it is defined as the amount of substance containing the

Dmitry_Shevchenko [17]

The Mole is the SI unit that expresses the amount of substance.

Mole is defined as - The mole is the amount of substance containing the same number of entities as there are in the 12 grams of Carbon - 12.

Mole is denoted by using symbol mol.

Mole = 6.022 x 10²³ elementary entities.

These number of elementary entities in 1 mole is equal to or called as an Avogadro's number. Mole is equal to 6.022 x 10²³ because this number of entity is same as in exactly 12 g of carbon-12.

It is a very important SI unit of measured which is used by the chemists. Moles are used in measuring in small or tiny things such as atoms, molecules and the other tiny particles.

To learn more about the mole concept,

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2 years ago

The eastfork forest contains pine trees, birch trees, and dogwood trees. All the trees in this forest are considered a(n) _____

Vesna [10]

Answer:

The answer is community

I got it correct

Explanation:

6 0

4 years ago

Read 2 more answers

Why is the value of ea for a spontaneous reaction less than the ea value for the same reaction running in reverse?

Vsevolod [243]

Answer and Explanation:

In spontaneous reactions, activation energy (Ea) of the forward reaction is less than that for the same reaction running in the reverse direction.

Firstly, The activation energy is the minimum energy requirement for the reacting molecules to initiate the reaction. It is the potential energy difference between the activated complex and the reactants on the energy profile diagram.

Spontaneous reactions are mainly exothermic reactions and are represented on the energy profile diagram as shown in the attached image.

The forward reaction looks like: Reactants (A) → products (B) + heat

As the spontaneous reaction (exothermic), the energy of the products is lower than that of the reactants.

The difference in energy between reactants and products is the enthalpy change of the reaction (ΔH).

The activation energy (Ea) of the forward direction is the difference between the energy of the the activated complex state and the reactants state.

In the case of the reverse direction: B + heat → A

In the reverse direction we need a supply of energy because the reaction is converting from a more stable state (low energy) to a lower stable state (high energy).

The supply in the reverse direction is ΔH, the amount of heat released in the forward direction.

Here, the activation energy of the reverse direction will be (Ea of the forward direction + ΔH).

The difference between the Ea of the reverse and forward direction is ΔH.

Ea reverse = Ea forward + ΔH.

So, in spontaneous reactions, the value of the Ea of forward direction is lower than the same reaction running in the reverse direction.

3 0

4 years ago