How many grams of solid iron will be produced from 32.1 grams of iron (III) oxide? Hint: Balance the equation first

Answer:

A homogeneous mixture

Explanation:

A homogeneous mixture has the same composition throughout

Answer: right and what are the answers for?

Explanation:

Answer:

237 K

Explanation:

Given that,

Initial temperature, T₁ = 201⁰C = 474 K

Let P be the initial pressure. Upon cooling the gas, the pressure decreases by a factor of 2.0, while the volume and the amount of gas remain constant.

Final pressure = P/2

The relation between the pressure and temperature is as follows :

[tex]\dfrac{P_1}{P_2}=\dfrac{T_1}{T_2}[/tex]

Put all the known values,

[tex]\dfrac{P}{\dfrac{P}{2}}=\dfrac{474}{T_2}\\\\2=\dfrac{474}{T_2}\\\\T_2=\dfrac{474}{2}\\\\T_2=237\ K[/tex]

So, the final temperature of the gas is equal to 237 K.

Answer:

6.3986g

Explanation:

The balanced chemical equation of this reaction is as follows:

Pb(NO3)2(aq) + 2KCl (aq) → PbCl2(s) + 2KNO3(aq)

In this equation, 2 moles of KCl solution will produce 1 mole of PbCl2.

To calculate the number of moles of PbCl2 produced, we use the formula:

Molarity = number of moles (n) ÷ volume (V)

0.101 = n/0.46

n = 0.046mol of KCl

If 2 moles of KCl solution will produce 1 mole of PbCl2

Then, 0.046mol of KCl will be react to produce (0.046 × 1/2) of PbCl2

0.046 × 1/2 = 0.023mol of PbCl2

To find the mass of PbCl2 using mole = mass ÷ molar mass

Molar mass of PbCl2 = 207.2 + 35.5(2)

= 207.2 + 71

= 278.2g/mol

0.023 = mass/278.2

mass = 6.3986g

Answer:

Can you help me with other question please

Answer:

what does the photo look like

Explanation:

Answer:

    The blood circulatory system (cardiovascular system) delivers nutrients and oxygen to all cells in the body. It consists of the heart and the blood vessels running through the entire body. The arteries carry blood away from the heart; the veins carry it back to the heart.

Explanation:

You're welcome!

Stay Safe!

Answer:

2:38

Explanation:

Answer:

2.58 good luck with everything

Answer: The mole ratio of sodium to sodium chloride 2:2.

Explanation:

As the given reaction equation is as follows.

[tex]2Na + Cl_{2} \rightarrow 2NaCl[/tex]

Here, 2 moles of sodium reacts with 1 mole of [tex]Cl_{2}[/tex] and leads to the formation of 2 moles of NaCl.

This means that 2 moles of sodium gives 2 moles of NaCl on reaction with chlorine.

Hence, the ratio of moles of sodium to sodium chloride is 2:2.

Thus, we can conclude that the mole ratio of sodium to sodium chloride 2:2.

Answer: 371 g MgCl2

Explanation:

Answer:

1 N2 + 3 H2 --> 2 NH3 :))) !!

Answer:

Wave X is the brightest light

Explanation:

The amplitude of a wave refers to the maximum upward or downward displacement of a wave from its rest position. This implies that the amplitude is the measured distance from rest position to crest position. Similarly, the amplitude is also measured from the rest position to the trough position.

The crest of a wave is the point on a travelling wave that has the maximum amount of positive or upward displacement from the rest position. The trough of a wave is the point on the travelling wave that has the maximum amount of negative or downward displacement from the rest position.

From the wave diagrams shown in the attachment below, the wave that shows the highest amount of upward or downward displacement from the rest position (x - axis) is wave X. Since the brightness of a light wave increases with increaese in amplitude, wave X will have the highest amount of brightness.

Answer:

B

Explanation:

Answer:

Personally, I believe it is unsafe. When people include a link in their answer, they are breaking the Brainly code, which states that a link to an unknown website is prohibited material.

Explanation:

The difference of squares of two numbers is 180. The square of the smaller number is 8 times the larger number. Find the two numbers.

Let the larger number be x

And, the square of the smaller number be 8x

x² − 8x = 180

⇒ x² − 8x − 180 = 0

⇒ x² − (18 − 10)x − 180 = 0

⇒ x² − 18x + 10x − 180 = 0

⇒ x (x − 18) + 10(x − 18) = 0

⇒ (x − 18) (x + 10) = 0

⇒ x − 18 = 0, x + 10 = 0

⇒ x = 18, x = −10

⇒ x = −10, 18

[tex] \therefore [/tex] Either, x = −10 and x = 18

x = 18 (Positive value)

Now, the square of the smaller number = 8x = 8 × 18 = 144

So, the square of the smaller number = [tex]\sqrt{144} [/tex] = 12

Iron gets converted from Fe2+ to Fe3+ during rusting. Details about rusting can be found below.

Rusting is the deteriorated state of iron or steel as a result of moisture and oxidation.

Rusting is characterized by a reddish-brown color on the surface of the iron.

Rusting is caused by oxidation of iron II (Fe2+) ion into iron III (Fe3+) ion.

Learn more about iron rusting at: https://brainly.com/question/18376414

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Answer:

24.2 mL.

Explanation:

Assuming constant temperature, we can solve this problem using Boyle's law, which states:

Where:

We input the data:

And solve for V₂:

The closest option is the second one: 24.2 mL.

Answer:

firstly for separating fillings we should use

magnet for separating it, and we left with sulphur and salt so for this we will use water

when we add water then salt get dissolve in it and we can easily take out sulphur again by evaporation we will obtain salt

hope it helps

Answer:

Ethane & propane are members of same homologous series : alkane which is indicated with Cn H2n+2

Explanation:

Answer:

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Answer: The specific heat of given metal is [tex]1.195 J/^{o}C[/tex].

Explanation:

Given: Mass of sample = 22.8 g

Heat energy = 1450 J

Initial temperature = [tex]21.8^{o}C[/tex]

Final temperature = [tex]75^{o}C[/tex]

Formula used to calculate the specific heat is as follows.

[tex]q = m \times C \times (T_{2} - T_{1})[/tex]

where,

q = heat energy

m = mass of substance or sample

C = specific heat

[tex]T_{1}[/tex] = initial temperature

[tex]T_{2}[/tex] = final temperature

Substitute the values into above formula as follows.

[tex]q = m \times C \times (T_{2} - T_{1})\\1450 J = 22.8 g \times C \times (75 - 21.8)^{o}C\\C = \frac{1450 J}{22.8 \times 53.2^{o}C}\\= 1.195 J/^{o}C[/tex]

Thus, we can conclude that the specific heat of given metal is [tex]1.195 J/^{o}C[/tex].

Answer:

Explanation:

As weathered products are carried away, fresh rocks are exposed to further weathering.

Answer:

melting

Explanation:

I think think helpful it is or not

Answer:

3

Explanation:

from the KLMN shell

K has the maximum of 2 electrons

M has the maximum of 8

M has the maximum of 18

so 12 electrons fell on M shell which is the third one

that's all....have fun

Answer: 2M + 3Q2 -----> 2MQ3

Explanation:

2 Ms either side, and 6 Qs either side

Answer:

CO + 3H2 -> H20 + CH4 :)) !!

Answer:

ethane is formed due to side reaction

Explanation:

During chlorination of methane, ethane is formed due to side reaction in termination step by the combination of two methyl free radicals.

Answer:

During chlorination of methane, ethane is formed due to side reaction in termination step by the combination of two methyl free radicals.