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3 years ago

Iron metal reacts with solid sulfur to produce solid iron(III) sulfide.

Chemistry

1 answer:

melisa1 [442]3 years ago

5 0

Answer:

Chemical equation:

3S(s) + 2Fe(s) → Fe₂S₃(s)

Explanation:

Iron metal react with solid sulfur and produced slid iron(III) sulfide.

The chemical reaction is given below:

Chemical reaction:

S + Fe → Fe₂S₃

Balanced chemical equation:

3S + 2Fe → Fe₂S₃

Balanced chemical equation with physical state:

3S(s) + 2Fe(s) → Fe₂S₃(s)

Ionic equation can not be written because all reactant and products are in solid form.

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What particles make up the nucleus

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DNA
Nucleoulos
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4 years ago

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PLEASE HELP FAST! When 23.3 g of O2 reacts with 18.3 g C10H8, what is the limiting reactant. The equation is C10H8 + 12O2 -->

Murljashka [212]

O₂ is the limiting reagent.

<h2>What is a limiting reactant?</h2>

A limiting reactant is described as the one that will be consumed first in a chemical reaction.

<h3>Calculation</h3>

C₁₀H₈ + 12O₂ → 10CO₂ + 4H₂O

Given, Mass of O₂ = 23.3 g

Mass of C₁₀H₈ = 18.3 g

Molar mass of O₂ = 32 g

No. of moles of O₂ = 32/23.3 = 1.4 moles

Molar mass of C₁₀H₈ = 128 g

No. of moles of C₁₀H₈ = 128/18.3 = 6.9 = 7 moles

According to the equation,

1 mole of C₁₀H₈ yields 10 moles of CO₂. So, 7 moles of C₁₀H₈, give 70 moles of CO₂.

12 moles of O₂ yields 10 moles of CO₂. So, 1.4 moles of O₂ give 1.16 moles of CO₂.

We do know, however, that based on our balanced equation, if we were to totally react all 1.4 moles of O2, we could only produce a maximum of 1.16 moles of CO2. Even while there is enough C10H8 to generate more, the amount of O2 we have is a limiting factor because it will be consumed first.

So, our limiting reactant is O₂.

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2 years ago

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Use the atom builder interactive to identify each nucleus. Two protons represented as purple spheres and one neutron represented

aleksandr82 [10.1K]

Answer:

$\frac{3}{2}He$

$\frac{6}{2} He$

$\frac{7}{4}Be$

$\frac{3}{1} H$

$\frac{6}{4}Be$

$\frac{7}{3} Li$

Explanation:

In the first nucleus we are told that there are two protons and one neutron. Let us remember that the mass number = number of protons + number of neutrons.

This implies that, for the first specie the mass number is 3, for the second specie the mass number is 6 and the third specie has a mass number of 7 and so on. The mass number is indicated as a superscript.

The atomic number is the number of protons in the nucleus of the atom and helps us to identify the atom. It is always written as a subscript as shown.

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3 years ago

A sample of propane (C3H8) has a mass of 0. 47 g. The sample is burned in a bomb calorimeter that has a mass of 1. 350 kg and a

Nady [450]

The amount of heat released by the sample has been 22.54 kJ. Thus, option C is correct.

The specific heat has been defined as the amount of heat required to raise the temperature of 1 gram of substance by 1 degree Celsius.

The specific heat has been expressed as:

$q=mc\Delta T$

<h3 /><h3>Computation for the heat absorbed</h3>

The iron and calorimeter are in side the closed system. Thus, the energy released by the sample, has been equivalent to the energy absorbed by the calorimeter.

$q_{released}=q_{absorbed}\\
q_{released}=m_{calorimeter}\;c_{calorimeter}\;\Delta T$

The given mass of calorimeter has been, $m_{calorimeter}=1350\;\rm g$

The specific heat of the calorimeter has been, $c_{calorimeter}=5.82\;\rm J/g^\circ C$

The change in temperature of the calorimeter has been, $\Delta T=2.87^\circ \rm C$

Substituting the values for heat released:

$q_{released}= 1350\;\text g\;\times\;5.82\;\text J/\text g^\circ \text C\;\times\;2.87^\circ \text C\\
q_{released}=22,549.5\;\text J\\
q_{released}}=22.54\;\rm kJ$

The amount of heat released by the sample has been 22.54 kJ. Thus, option C is correct.

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3 years ago

Based on the name, which substance is a covalent compound?

Sindrei [870]

Answer:

dinitrogen pentoxide

Explanation:

Based on the research, dinitrogen pentoxide is a chemical compound containing only nitrogen and oxygen which is both nonmetal. When two nonmetals or two negatively charged atoms try to form bonds, they always form covalent bonds. Hence, Dinitrogen Pentoxide is not ionic - it is covalent.

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