What do the flames below the pot represent

Reduce the following equation to a net ionic equation: 2Na+ + SO4^2- + Ba^2+ + 2Cl^- ---> 2Na^+ + 2Cl^- + BaSOv4

Eduardwww [97]

net ionic equation

B) SO₄²⁻ (aq) + Ba²⁺ (aq) → BaSO₄ (s)

Explanation:

We have the following chemical equation:

2 Na⁺ (aq) + SO₄²⁻ (aq) + Ba²⁺ (aq) + 2 Cl⁻ (aq) → 2 Na⁺ (aq) + 2 Cl⁻ (aq) + BaSO₄ (s)

To get the net ionic equation we remove the spectator ions and we get:

SO₄²⁻ (aq) + Ba²⁺ (aq) → BaSO₄ (s)

were:

(aq) - aqueous

(s) - solid

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net ionic equation

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3 years ago

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If 588 grams of FeS2 is allowed to react with 352 grams of O2 according to the following equation, how many grams of Fe2O3 are p

Rainbow [258]

Answer: The mass of iron (III) oxide produced is 782.5 grams

Explanation:

To calculate the number of moles, we use the equation:

$\text{Number of moles}=\frac{\text{Given mass}}{\text{Molar mass}}$ .....(1)

For $FeS_2$ :

Given mass of $FeS_2$ = 588 g

Molar mass of $FeS_2$ = 120 g/mol

Putting values in equation 1, we get:

$\text{Moles of }FeS_2=\frac{588g}{120g/mol}=4.9mol$

For $O_2$ :

Given mass of $O_2$ = 352 g

Molar mass of $O_2$ = 32 g/mol

Putting values in equation 1, we get:

$\text{Moles of }O_2=\frac{352g}{32g/mol}=11mol$

The chemical equation for the reaction of $FeS_2$ and oxygen gas follows:

$FeS_2+O_2\rightarrow Fe_2O_3+SO_2$

By Stoichiometry of the reaction:

1 mole of $FeS_2$ reacts with 1 mole of oxygen gas

So, 4.9 moles of $FeS_2$ will react with = $\frac{1}{1}\times 4.9=4.9mol$ of oxygen gas

As, given amount of oxygen gas is more than the required amount. So, it is considered as an excess reagent.

Thus, $FeS_2$ is considered as a limiting reagent because it limits the formation of product.

By Stoichiometry of the reaction:

1 mole of $FeS_2$ produces 1 mole of iron (III) oxide

So, 4.9 moles of $FeS_2$ will produce = $\frac{1}{1}\times 4.9=4.9moles$ of iron (III) oxide

Now, calculating the mass of iron (III) oxide from equation 1, we get:

Molar mass of iron (III) oxide = 159.7 g/mol

Moles of iron (III) oxide = 4.9 moles

Putting values in equation 1, we get:

$4.9mol=\frac{\text{Mass of iron (III) oxide}}{159.7g/mol}\\\\\text{Mass of iron (III) oxide}=(4.9mol\times 159.7g/mol)=782.5g$

Hence, the mass of iron (III) oxide produced is 782.5 grams

8 0

3 years ago

WIl mark brainliest

liubo4ka [24]

Answer:

Solid particles have the least amount of energy, and gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles. A change in phase may occur when the energy of the particles is changed.

Explanation:

Solid particles have the least amount of energy, and gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles. A change in phase may occur when the energy of the particles is changed.

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3 years ago

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Which list places the layers of the sun in the correct order from innermost to outermost? Corona, photosphere, chromosphere Phot

Savatey [412]

Answer:

Layers of sun from inner to outermost layer-

Core<Radiative Zone<Convection Zone<Photosphere<Chromosphere<Transition Zone<Corona

Explanation:

The Sun is comprised of 7 layers, of which 3 forms the inner layers and 4 forms the outer layers.

The inner layers are namely-

Core- It is the innermost layer of the sun where the energy is produced by nuclear fusion process and the temperature is significantly high, about millions of degree celsius. Here, the hydrogens are combined in order to form helium .

Radiative zone- This is the zone through which the energy is radiated by the photon from the core outward in the form of electromagnetic radiation that usually takes more than about 170,000 years to radiate.

Convection zone- This layer starts from the interior of about 200,000 kilometers extending up to the visible surface of the sun. The temperature in this zone is extremely high but comparatively less than the core. The energy emitted from the core is then radiated through this zone. Here, the convection cells are generated due to the continuous heating and cooling of heated materials.

The outer layers of sun are as follows-

Photosphere- This layer is considered as the solar surface which is mostly concealed by the presence of granulations, that are initiated by the bubbles of gases formed in the convection zone and also presence of sunspots that are formed due to the stronger magnetic field. The temperature ranges here from 4000° to 6500°K.

Chromosphere- Here, the temperature rises extensively as one goes away from the sun and the temperature in this layer ranges from 4000° to a maximum of 8000°K.

Transition region- It is a thin layer which is about 60 miles only where the temperature highly increases from about 8000° to 500,000°K. The reason behind this increase in temperature is yet to be discovered.

Corona- It is the outermost layer where the temperature range is from 500,000° K to 1,000,000° K. This layer is difficult to be seen with the naked eye but can be seen using a coronagraph telescope during the time of solar eclipse.

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3 years ago

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Susan conducts an experiment five times and gets a solution concentration of 1.9M, 2.1M, 1.8M, 1.9M, and 2.2M. The known concent

vlada-n [284]

Answer:

This question is incomplete; the complete part/options is:

A) They are precise, but not accurate.

B) They are accurate, but not precise.

C) They are both accurate and precise.

D) They are neither accurate nor precise

The answer is C.

Explanation:

Accuracy refers to how close a series of measurements is to a known or true value while precision is the closeness of the measurements to one another.

The known concentration of a solution is 2.0M. In an experiment which Susan conducts five times and gets a solution concentration of 1.9M, 2.1M, 1.8M, 1.9M, and 2.2M respectively.

Based on these measured solute concentrations, one would observe that the measured values of: 1.9M, 2.1M, 1.8M, 1.9M, 2.2M are close to one another. This means that the measurements are PRECISE.

Also, the measured values are not too distant from the known value of 2.0M, hence, it can be said that the measurements are ACCURATE.

Therefore, Susan's measurements of the solute concentration are both accurate and precise.

8 0

4 years ago