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2 years ago

When 50.0 g iron(III) oxide reacts with carbon monoxide, 32.5 g iron is produced. What is the percent yield of the reaction?

Chemistry

1 answer:

scoray [572]2 years ago

4 0

Answer:

92.9%

Explanation:

You have been given the actual yield of the reaction. First, you need to find the theoretical yield of the reaction. To do this, you need to (1) convert grams Fe₂O₃ to moles Fe₂O₃ (via molar mass from periodic table values), then (2) convert moles Fe₂O₃ to moles Fe (via mole-to-mole ratio from reaction coefficients), and then (3) convert moles Fe to grams Fe (via molar mass).

Once you have found the theoretical yield, you need to use the percent yield equation to calculate the final answer. This number should have 3 sig figs to match the given values.

(Step 1)

Molar Mass (Fe₂O₃): 2(55.845 g/mol) + 3(15.998 g/mol)

Molar Mass (Fe₂O₃): 159.684 g/mol

1 Fe₂O₃(s) + 3 CO(g) ---> 2 Fe(s) + 3 CO₂(g)

Molar Mass (Fe): 55.845 g/mol

50.0 g Fe₂O₃ 1 mole 2 moles Fe 55.845 g
-------------------- x ------------------ x --------------------- x ---------------- = 35.0 g Fe
159.684 g 1 mole Fe₂O₃ 1 mole

(Step 2)

Actual Yield
Percent Yield = --------------------------- x 100%
Theoretical Yield

32.5 g Fe
Percent Yield = ---------------------- x 100% = 92.9%
35.0 g Fe

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Define matter. Give 5 examples of matter.

Vladimir79 [104]

Answer:

Matter is the term for any type of material. Matter is anything that has mass and takes up space. At a minimum, matter requires at least one subatomic particle, although most matter consists of atoms.

Some examples are: Water, books, pencils, sun, earth, moon, electron, proton, mesons, and quarks

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3 years ago

Read 2 more answers

Earth revolving around the sun, you walking down the street, and molecules moving in space all have

Ann [662]

Answer:

B. Kinetic energy

Explanation:

moving is kinetic, potential is inside a body

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4 years ago

The correct increasing order of Bond angle is H2O < NH3 < BCl3 < CCl4 H2O < NH3 < CCl4 < BCl3 NH3 < H2O &lt

Step2247 [10]

Answer:

H2O < NH3 < CCl4 < BCl3

Explanation:

Bond angle of a molecule or an ion can be explained by two concepts which are either by their valence shell electron pair repulsion (VSEPR) model or hybridization.

The VSEPR model determines the total number of electron pairs surrounding the central atom of the species. All the electron pairs will orient themselves in such a way as to minimize the electrostatic repulsions between them. These repulsions hence determine the geometry of the covalent bond angles around the central atom.

Hence; as the number of lone pairs increases from zero to 2 the bond angles diminish progressively.

Hybridization is the mixing and blending of two or more pure atomic orbitals to form two or moe hybrid atomic orbitals which are identical in shape and energy. During the process of formation of these hybrid orbitals, The bonds formed i.e the sigma bond and the pi bond determines the bond angle of such compound.

From the given compounds;

H20 have a bond angle of 104.5°

NH3 have a bond angle of 107°

BCl3 have a bond angle of 120°

CCl4 have a bond angle of 109.5°

thus in an increasing order of bond angle:

H2O < NH3 < CCl4 < BCl3

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3 years ago

An electron on an energy level has an energy of 16.32 x 10-19 J. It moves to another level by releasing 5.4 x 10-19 J of energy.

SVEN [57.7K]

From the information provided in the question, we can see that; the electron moved up to an energy level and has an energy of 21.72 x 10-19 J.

Bohr's model of the atom tells us that electrons are found in certain specific energy levels. Energy is absorbed when an electron moves from a lower to a higher energy level and energy is released when an electron moves from a higher to a lower energy level.

Given that;

ΔE = E2 - E1

E2 = final energy level

E1 = initial energy level

E2 = ?

E1 = 16.32 x 10-19 J

ΔE = 5.4 x 10-19

E2 = ΔE + E1

E2 = 5.4 x 10-19 + 16.32 x 10-19 J

E2 = 21.72 x 10-19 J

Learn more: brainly.com/question/4612545

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3 years ago

You must find happiness right where you are lyrics

Vlad [161]

Answer:

I'm guessing this is for "Where you are" from Moana as it's the only song I could find that goes "You must find happiness where you are".

Lyrics:

Moana, make way, make way

Moana, it's time you knew

The village of Motunui is

All you need

The dancers are practicing

They dance to an ancient song

(Who needs a new song? This old one's all we need)

This tradition is our mission

And Moana, there's so much to do (make way)

Don't trip on the taro root

That's all you need

We share everything we make (we make)

We joke and we weave our baskets

The fishermen come back from the sea

I wanna see

Don't walk away

Moana, stay on the ground now

Our people will need a chief

And there you are

There comes a day

When you're gonna look around

And realize happiness is

Where you are

Consider the coconut (the what?)

Consider its tree

We use each part of the coconut

That's all we need

We make our nets from the fibers

The water is sweet inside

We use the leaves to build fires

We cook up the meat inside

Consider the coconuts

The trunks and the leaves

The island gives us what we need

And no one leaves

That's right, we stay

We're safe and we're well provided

And when we look to the future

There you are

You'll be okay

In time you'll learn just as I did

You must find happiness right

Where you are

I like to dance with the water

The undertow and the waves

The water is mischievous

I like how it misbehaves

The village may think I'm crazy

Or say that I drift too far

But once you know what you like, well

There you are

You are your father's daughter

Stubbornness and pride

Mind what he says but remember

You may hear a voice inside

And if the voice starts to whisper

To follow the farthest star

Moana, that voice inside is

Who you are

We make our nets from the fibers

The water is sweet inside

We use the leaves to build fires

And cook up the meat inside

The village believes in us

The village believes

The island gives us what we need

And no one leaves

So here I'll stay

My home, my people beside me

And when I think of tomorrow

There we are

I'll lead the way

I'll have my people to guide me

We'll build our future together

Where we are

'Cause every path leads you back to

Where you are

You can find happiness right

Where you are

3 0

3 years ago