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2 years ago

Calculate the grams of so2 gas present at stp in a 5.9 l container. (r = 0.0821 l·atm/k·mol)

1 answer:

6 0

There is an exact value for the standard volume at standard conditions of 1 atm and 273 K. This standard volume for any ideal gas is 22.4 L/mol. Thus,

Moles SO₂ = 5.9 L * 1 mol/22.4 L = 0.263 mol

The molar mass for SO₂ is 64.066 g/mol. So, the mass is:

Mass = 0.263 mol * 64.066 g/mol = 16.87 g SO₂

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what is the quotient of 8.01 grams divided by 3.127 grams expressed to the correct number of signicant figures

likoan [24]

Your going to want to round 8.01 to 8.01 and change 3.127 rounded too 3.1
then u want to take 8.0 and 3.1 and times it and u will get 24.8 or 25

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2 years ago

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Glade air freshener gel “disappearing” is an example of

netineya [11]

Answer:

Vaporization

Explanation:

Vaporization is the change of a specie to the gaseous state. To 'disappear' in this case simply means to change to the gaseous state.

Substances with high vapour pressure tend to be easily converted to vapour phase. Hence if Glade air freshener gel 'disappears' easily, then it has a high vapour pressure and is easily converted to vapour (gas).

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2 years ago

A certain isotope x2+ contains 48 electrons and 75 neutrons. what is the mass number for this element?

gulaghasi [49]

The most important identity of an element is its atomic number or number of protons. Electrons and neutrons may vary, but protons stay constant. To start with, when an element is neutral, the number of protons and electrons are equal. When the isotope is a positive ion, that means that the element gives away 2 electrons. So, if the electrons is 48, then that means it was originally 48 - 2 = 46 electrons. From the periodic table, element 46 is Palladium (Pd).

8 0

2 years ago

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Consider this chemical reaction, where moving from left to right represents moving forward in time. A five panel comic strip. In

yulyashka [42]

Answer:

The reaction reaches equilibrium at the fourth panel.

Explanation:

Chemical Equilibrium is achieved when the overall properties the system seem to be constant, that is, stop changing.

Although, for chemical equilibrium, the right term for this equilibrium is dynamic equilibrium; the rate of forward reaction balances the rate of backward reaction, but concentrations can keep changing.

The point where equilibrium is achieved is when exactly when we reach the panel where the spheres that make up this panel is the same as the next panel and the next, that is, the specific colour and number of spheres start to become unchanged.

And from the description given in the question,

- In the first panel, there are ten large red spheres.

- In the second panel, there are 8 large red spheres and two small blue spheres.

- In the third panel, there are six large red spheres and four small blue spheres.

- In the fourth panel, there are four large red spheres and six small blue spheres.

- In the fifth panel, there are four large red spheres and six small blue spheres.

It is evident that the make-up of the spheres have become the same as at the fourth and fifth panel. This means that the first point where this final configuration of spheres first appeared is the fourth panel.

Hence, equilibrium is first reached at the fourth panel.

Hope this Helps!!!

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2 years ago

The potential energy diagram shows the gain and loss of potential energy as water molecules decompose into hydrogen and oxygen.

Dovator [93]

Answer:

The diagram with the five labels of the parts is in the image attached. Please, see the image.

Explanation:

1) General explanation: a potential chemical energy diagram is used to show how the reactants gain energy until they reach the activation energy, form the activated complex, and release part of the energy to form the products.

The difference between the chemical potential energy of the products and the reactants is the enthalpy of the reaction:

ΔH rxn = ΔH products - ΔH reactants.

The labels that correspond to each part of the diagram are explained next.

2) Reactants:

This is the substances at the start, so they appear on the left bottom side of the diagram.

3) Activation energy:

It is the energy that the reactants must reach (the highest point) in order to the reaction occurs.

4) Activated complex:

This is the intermediate state and of highest energy. The reactants have formed a complex at mid way between the reactants and the products.

5) Products:

These are the substances formed when the reaction is completed. They are lower in energy than the activated complex. They can be either higher or lower in energy than the reactants. The products are shown to the right of the diagram.

6) Enthalpy of the reaction:

The enthalpy of the reaction is the difference in energy of the products and the reactants. In this case, since, the products are higher in energy, it means that the reaction absorbed energy and it is an endothermic reaction.

4 0

2 years ago