Answers
Answer:
1297.143g
Explanation:
35% Fe by mass means;
100g of iron ore contain 35g of pure iron
so;
35g of pure iron are produced from 100g of iron ore
454g of pure iron are produced from
\( \frac{100 \times 454}{35} \)
= 1297.143g (3dps)
Related Questions
I need to know the electron geometry and the molecular shape
Answers
In determining the shape of a molecule, the electron geometry includes both bond pairs and lone pairs. But the molecular geometry excludes the lone pairs while determining the shape of molecule.
What is VSEPR theory?The valence shell electron pair repulsion theory is proposed by the scientists Sidgwick and Powell to predict the shapes of the molecules. This theory is based on the assumption that valence shell electron pairs repel each other and are oriented in space as far apart as possible to minimize the mutual repulsion.
Electron geometry Molecular shape
NO₂⁺ Bent Linear
PCl₃ Tetrahedral Trigonal pyramidal
BCl₂H Bent Trigonal planar
ClO₃⁻ Tetrahedral Trigonal pyramidal
To know more about VSEPR theory, visit;
https://brainly.com/question/14992767
#SPJ9
pla help will give brain lest if correct
Answers
Answer:
The first and second one for sure
Explanation:
What is the difference between the R.M.M. and the molar mass of a compound?
Answers
Answer:
rmm doesn't need to include unit and molar mass need to include unit
An atom X has 2 electrons in its outer orbit. What will it do to form a stable ion?
Answers
Answer:
In a neutral molecule, the sum of the bonding valance electrons must be equal. So the products of the negative element and its charges and the positive element and its charge must be equal.
Explanation:
C1×N1 = C2×N2
If we have a 3 valance electrons , the 'A' charge will be either +3 or -5 for a full octet and valance electron in 'B' atoms will mostly result in acquisition of additional electrons (2) for an octet and relative charge of -2.
Balancing the two,
3 × A = -2 × B
To be equal, A = 2 and B = 3
Therefore, A²B³
The decomposition of hydrogen peroxide follows first order reaction kinetics with a rate constant k = 6.40 x 10-3 s-1.
2 H2O2(aq) ⟶ 2 H2O(l) + O2(g)
If the reaction starts with an H2O2 concentration of 6.80 M, how long will it take for the H2O2 concentration to reach 2 M?
Answers
In this first-order the decomposition reaction, the H2O2 concentration will drop from 6.80 M to 2 M in roughly 191.1 seconds.
The first-order rate equation can be used to calculate how long it will take for the hydrogen peroxide (H2O2) concentration to reach 2 M:
ln([H2O2]t/[H2O2]0) = -kt
Where:
The amount of H2O2 present at time t is known as [H2O2]t.H2O2 is initially present at a concentration of zero, and k is the rate constant.
To find t, we can rewrite the equation as follows:
t = -[ln([H2O2]t/[H2O2]0)] / k
Plugging in the given values:
[H2O2]t = 2 M
[H2O2]0 = 6.80 M
\(k = 6.40 \times 10^{(-3)} s^{(-1)\)
t = -[ln(2/6.80)] / (6.40 x 10^(-3))
Now, we can calculate the time:
t ≈ -[ln(0.2941)] / (6.40 x 10^(-3))
t ≈ -(−1.2231) / (6.40 x 10^(-3))
t ≈ 191.1 seconds
for more quesions on decomposition reaction
https://brainly.com/question/14608831
#SPJ8
A sample of gas at 2815 torr is cooled from 150.0 C to 100.0 C. Assuming the volume is constant what is the pressure in atm of the gas at 100.0 C
Answers
A sample of gas at 2815 torr is cooled from 150.0 C to 100.0 C. Assuming the volume is constant, 2482.2torr is the pressure in atm of the gas at 100.0 C.
The force delivered perpendicularly to an object's surface per unit area across how that force is dispersed is known as pressure (symbol: p / P). The pressure in relation to the surrounding air pressure is known as gauge pressure, also spelt gauge pressure.
Pressure is expressed using a variety of units. Some of these are calculated by dividing a unit of force by a unit of area; for instance, the metric system's unit of pressure, a pascal (Pa), is equal to one newton / square metre (N/m2).
P₁/T₁=P₂/T₂
2815 ×373/423=2482.2torr
To know more about pressure, here:
https://brainly.com/question/12971272
#SPJ1
A 1.85-mole sample of H₂O2 weighs
(A) 33.3 amu
(B) 35.9 g
C) 62.9 g
(D) 1.85 g
E 33.3 g
Answers
Considering the definition of molar mass, the correct answer is option c): the mass of 1.85 moles H₂O₂ is 62.9 grams.
Definition of molar massThe molar mass of substance is a property defined as the amount of mass that a substance contains in one mole.
The molar mass of a compound is the sum of the molar mass of the elements that form it (whose value is found in the periodic table) multiplied by the number of times they appear in the compound.
Molar mass of H₂O₂In this case, you know the molar mass of the elements is:
O= 16 g/moleH= 1 g/moleSo, the molar mass of the compound H₂O₂ is calculated as:
H₂O₂= 2× 1 g/mole + 2× 16 g/mole
Solving:
H₂O₂= 34 g/mole
Mass of 1.85 moles H₂O₂You can apply the following rule of three: If by definition of molar mass 1 mole of the compound contains 34 grams, 1.85 moles of the compound contains how much mass?
mass= (1.85 moles× 34 grams)÷ 1 mole
mass= 62.9 grams
Finally, the mass of 1.85 moles H₂O₂ is 62.9 grams.
Learn more about molar mass:
brainly.com/question/5216907
#SPJ1
3. A small piece of solid iron is placed into a 5.00 Lcontainer of oxygen gas at room. temperature and pressure (1.00 atm) and a small amount of water (assume volume of container is the volume of the gas). The container is sealed and after some time, it is observed that the iron has rusted. The container is still 5.00 L but the pressure is now only 0.800 atm. How many grams of oxygen gas were used to form rust according to this chemical equation?
4 Fe (s) + 3 Oz (g) →2 Fe2O3 (s)? How many grams did the original sample of iron weigh?
Answers
The mass of oxygen used to form the rust would be 5.44 grams.
The original mass of the iron sample would be 15.68 grams.
Stoichiometric problemAfter the reaction:
PV = nRT (P = 0.8, V = 5 L, T = 295K R = 0.082)
n = PV/RT = (0.8x5)/(0.082x295)
= 0.17
Mass of 0.17 O2 = 0.17 x 32 = 5.44 grams
From the balanced equation of the reaction:
4 Fe (s) + 3 O2 (g) →2 Fe2O3 (s)
1 mole of gas at RTP = 24 liters
5.00 L of oxygen at RTP = 5x1/24
= 0.21 mol
Mole ratio of iron to oxygen = 4:3
Equivalence mole of iron = 4/3 x 0.21 = 0.28 mol
Mass of 0.28 mol iron = 0.28 x 56
= 15.68 grams
In other words, the mass of oxygen gas used to form the rust is 5.44 grams while the mass of the original sample of iron is 15.68 grams.
More on stoichiometric problems can be found here: https://brainly.com/question/29856106
#SPJ1
How many particles are there in 0.057 moles of lithium bromide made
Answers
There are 3.44 x 10^{22} particles in 0.057 moles of lithium bromide.
What chemical compound is lithium bromide known by?The lithium bromide formula also known as the lithium monobromide formula or Bromo lithium formula is explored. It is a counterion bromide-based salt of lithium.
we have to use Avogadro's constant,
Avogadro's constant, is approximately equal to 6.022 x 10^{22} particles per mole.
we can use the following formula:
number of particles = moles x Avogadro's constant
Substitute the values,
number of particles = 0.057 moles x 6.022 x 10^{23} particles/mol
Simplifying the equation
number of particles = 3.44 x 10^{22} particles
To know more about lithium bromide visit:
https://brainly.com/question/16584013
#SPJ9
If you want there to be less of you tomorrow than today... you need to lose
Answers
Answer:
rise your words, not your voice rain grows flowers thunder does not.
Explanation:
off the top of my head
What is and ionic bond and how it forms and why it forms
Answers
a graduated cylinder which contains 47.3 mL, weighs 89.62 grams. when a solid submerged in the water, the volume level rises to 55.4 ml and the mass to 123.79 grams. a) what is the volume of the solid? b) what is the mass of the solid? c) what is the density of the solid?
Answers
Explanation:
the mass of the object is 123.97-89.62=34.35g
the volume is 55.4-47.3=8.1ml
the density is 34.35/8.1=4.2g/ml
a solution containing a kcl dissolved in water will have a than that of pure water. multiple choice higher boiling point and a lower freezing point none of the answers can be determined with the information provided. lower boiling point and a lower freezing point lower boiling point and a higher freezing point higher boiling point and a higher freezing point
Answers
A solution containing a KCl dissolved in water will have a higher boiling point and a lower freezing point than that of pure water.
Elevation in boiling point is a phenomenon that describe the boiling point of a liquid will be higher when another compound is added. Which means a solution has higher boiling point than pure solvent .
Depression in freezing point is a phenomenon that describe the freezing point of a liquid will be lower when another compound is added. Which means a solution has lower freezing point than pure solvent.
Thus, The boiling point and the freezing point of a solution of KCl in water will be greater and lower, respectively, than that of pure water.
To learn more about Boiling & Freezing point, Here :
https://brainly.com/question/7197568?referrer=searchResults
#SPJ4
A student combined two solutions of clear liquids in a test tube, after one minute a solid substance appeared in the test tube. Based on their observations, can the students correctly conclude that a chemical reaction occurred?
Answers
O
Name,
Period
Chapter 6 Practice
Choose the best answer:
1. Which of the following states the results of a sodium atom transferring an electron to a chlorine
atom.
a.
b.
Each atom ends up with a more stable electron arrangement.
The sodium atom becomes more stable, but the chlorine atom becomes less stable.
c. The chlorine atom becomes less stable, but the sodium atom becomes more stable.
d. Each atom ends up with a less stable electron arrangement.
Answers
To achieve stability Na⁺ looses its electron to chlorine ion to complete its octet, and cl⁻ gain electron from sodium ion to complete its octet, so option A and B both are right.
What is electronic configuration ?
According to electronic configurations, each electron moves individually within an orbital while being surrounded by an average field produced by all other orbitals.
The octet rule can be better understood by considering the electron configurations of sodium and chloride ions, which are the main ingredients of table salt ( NaCl ).
The Na+ ion has an electron configuration of 1s₂, 2s₂ ,2p₆ after sodium ( Na ), with an electron configuration of 1s₂, 2s₂, 2p₆, 3s₁, loses its outermost 3s electron.
So, chlorine atom gain one electron from sodium atom to complet octet and become stable.
Hence, option A and B both are correct.
To learn more about electronic configuration follow the link below;
https://brainly.com/question/28045031
#SPJ2
What kind of solid is crystalline boron (B)?
A. lonic solid
B. Metallic solid
C. Molecular solid
D. Network solid
Answers
Answer:
D
Explanation:
gr. 2.3 at 25°C; valence +3. Boron is a nonmetallic element existing as a dark brown to black amorphous powder or as an extremely hard, usually jet-black to silver-gray, brittle, lustrous, metallike crystalline solid
it is a network solid, a lattice of many covalent bonds (like diamond, except that it is black rather than transparent).
Network solid kind of solid is crystalline boron (B). Hence, option D is correct.
What is Network solid?A network solid is a solid where all the atoms are covalently bonded in a continuous network.
Boron is a nonmetallic element existing as a dark brown to black amorphous powder or as an extremely hard, usually jet-black to silver-grey, brittle, lustrous, metallike crystalline solid
It is a network solid, a lattice of many covalent bonds (like a diamond, except that it is black rather than transparent).
Hence, option D is correct.
Learn more about Network solid here:
https://brainly.com/question/2700493
#SPJ2
how does ease of ion pair formation depend on concentration.
Answers
1 points
A bottle contains a mixture of two gases: Oxygen and Hellum. The partial pressure of O2 is 1.0 atm and the partial pressure of He is 100.0 mmHg. What is the total pressure in the tank? (Volume and temperature are
constant)
101 alm
011 atm
O 101 mmHg
O 1.1 mmHg
Answers
101 mmHg is the total pressure in the tank.
Thus, Dalton's Law of Partial Pressures states that while the volume and temperature of a gaseous mixture are held constant, the total pressure of the mixture is equal to the sum of the partial pressures of its gaseous components.
Nitrogen, oxygen, argon, carbon dioxide, water vapor, and a trace amount of other gases are all present in atmospheric air and pressure.
The increased oxygen content in the chamber can displace the CO bound to hemoglobin faster than air oxygen, hence the hyperbaric chambers are also used to treat carbon monoxide (CO) poisoning. The treatment of scuba divers with the bends is another application for hyperbaric chambers.
Thus, 101 mmHg is the total pressure in the tank.
Learn more about Pressure, refer to the link:
https://brainly.com/question/30673967
#SPJ1
ZSM-5, a catalyst material, has a surface area of 581 m²/g. What is the surface
area of this material in cm²/mg?
Answers
ZSM-5 is a catalyst material, which has a surface area of 581 m²/g. This is equivalent to a surface area of 5810 cm²/mg.
What is a catalyst?A catalyst is a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change. Catalysts have large surface areas to increase the reaction rate.
Biological catalysts are known as enzymes.
ZSM-5 is a catalyst material, which has a surface area of 581 m²/g. We want to convert this value to cm²/mg.
Step 1: Convert 581 m²/g to cm²/g.We will use the conversion factor 1 m = 100 cm.
581 m²/g × (100 cm/1 m)² = 5.81 × 10⁶ cm²/g
Step 2: Convert 5.81 × 10⁶ cm²/g to cm²/mg.We will use the conversion factor 1 g = 1000 mg.
5.81 × 10⁶ cm²/g × (1 g/1000 mg) = 5810 cm²/mg
ZSM-5 is a catalyst material, which has a surface area of 581 m²/g. This is equivalent to a surface area of 5810 cm²/mg.
Learn more about catalysts here: https://brainly.com/question/12507566
3. A Wilkinson’s catalyst is widely used in the hydrogenation of alkenes. Show a catalytic cycle, including: i. chemical structure of the catalyst, with complete stereochemistry ii. molecular geometry of catalyst iii. type of reactions involved iv. the appropriate starting material, reagent and solvent v. major and minor end-products vi. all intermediates, for each reaction stated in (iii)
Answers
We can see here that the catalytic cycle for the hydrogenation of alkenes using Wilkinson's catalyst involves several steps.
What are the steps involved?Here's an overview of the catalytic cycle, including the necessary details:
i. Chemical structure of the catalyst:
Wilkinson's catalyst, also known as chloridotris(triphenylphosphine)rhodium(I), has the following chemical structure: [RhCl(PPh3)3]
ii. Molecular geometry of the catalyst:
The Wilkinson's catalyst has a trigonal bipyramidal geometry around the rhodium center. The three triphenylphosphine (PPh3) ligands occupy equatorial positions, while the chloride (Cl) ligand occupies an axial position.
iii. Type of reactions involved:
The catalytic cycle involves several reactions, including:
Oxidative addition: The rhodium center undergoes oxidative addition, reacting with molecular hydrogen (H2) to form a dihydride intermediate.Alkene coordination: The alkene substrate coordinates to the rhodium center, forming a π-complex.Hydrogenation: The coordinated alkene undergoes hydrogenation, resulting in the addition of hydrogen atoms to the double bond and formation of a metal-alkyl intermediate.Reoxidation: The metal-alkyl intermediate reacts with a hydrogen molecule to regenerate the rhodium dihydride species.iv. Starting material, reagent, and solvent:
The starting material is an alkene, and the reagent is Wilkinson's catalyst ([RhCl(PPh3)3]). The reaction is typically carried out in a suitable solvent, such as dichloromethane (CH2Cl2) or tetrahydrofuran (THF).
v. Major and minor end-products:
The major end-product of the hydrogenation reaction is the fully saturated alkane, resulting from the addition of hydrogen across the double bond. The minor end-product may include cis- or trans-configured alkanes if the original alkene substrate possesses geometric isomers.
vi. Intermediates:
The intermediates in the catalytic cycle include:
Rhodium dihydride complex: [RhH2(PPh3)3]Alkene-Rhodium π-complex: [Rh(η2-alkene)(PPh3)3]Metal-alkyl intermediate: [Rh(alkyl)(PPh3)3]These intermediates play a crucial role in facilitating the hydrogenation reaction and enabling the catalytic cycle to proceed.
Learn more about Wilkinson’s catalyst on https://brainly.com/question/31972308
#SPJ1
write an equation for the proton transfer reaction that occurs when the following base reacts with water. draw curved arrows that show a mechanism for the proton transfer, and modify the given structures to draw the resulting products.
Answers
Refer the product in the image.The transfer of a proton (H+) in chemistry typically occurs through a mechanism known as an acid-base reaction.
This process involves the transfer of a proton from an acidic species (the proton donor) to a basic species (the proton acceptor), leading to the formation of a new acidic species and a new acid-base reactions species. In the final structure, the tetrahedral shape of the molecule and the absence of charge indicate that the proton transfer has resulted in the formation of a neutral species. In other words, the proton has been transferred from an acidic species to a basic species, neutralizing both species and resulting in a neutral compound with a tetrahedral shape. However, the general idea of the transfer of a proton from an acidic species to a basic species remains a key principle in understanding acid-base reactions.
Learn more about acid-base reactions here:
https://brainly.com/question/10467673
#SPJ4
Refer the below image to answer the Question:
Consider the following scenario
A drought hits the habitat of a semi-aquatic bird population. All ponds dry up, and fish populations decline. There are two groups of birds in the population that differ in leg length and diet. Long-legged birds eat fish, while short-legged birds eat insects. The drought has little effect on insect populations
What is the main selective pressure in this scenario?
Oleg length
Odrought
Ofish population
Oinsect population
Answers
Answer: b
Explanation: jk
If you have a phone with facial recognition software or a laptop that unlocks with the touch of a finger, you’ve already experienced the world of biometrics. Biometrics is a way of identifying people based on their physical traits. But even though biometric technology is everywhere these days, it comes with serious—and potentially permanent—risks to users. For this reason, biometrics should not be used to protect particularly sensitive information like bank accounts and credit card credentials.
Proponents of biometric technology argue that it’s more secure than a traditional PIN or password. Everybody has unique fingerprints and retina, for example, so biometric data should be impossible to fake. Yet this reliance on unique traits is also one of biometrics’ biggest problems. Imagine someone lifts your fingerprints from a surface. If you have a touch identification system set up on your devices or accounts, a hacker could theoretically use those prints to gain access. And once that happens, your security might be compromised forever. After all, you can always change a password, but not your physical characteristics.
Which of the following best describes the perspective presented in this passage?
A
Hackers have developed methods to steal biometric data.
B
Biometric technology is not secure enough to guard sensitive information.
C
Biometric technology is safer than a traditional password or PIN.
D
Biometrics is a way of verifying identity based on physical characteristics.
Answers
Answer:
write
threetypesofisomerismthatalkenescanexhibit?
Please help me with this question.
Answers
Answer:1=B
2=A
Explanation:
in a triple beam balance how do you know when you have to move a weight back to the previous notches or grooves
Answers
Answer:
sdipgjaeri0ae
Explanation:
Explain why the surface of the tire melts.
Answers
Answer:
Why Heat Causes Tires to Expand and Blow Out
Explanation:
The air pressure in tires increases as the temperature goes up. ... Such a big difference it can cause a tire to pop. Even if it doesn't give out, over-inflation can cause a tire to prematurely wear and interfere with braking.
A chemist uses 22.0 mL of 0.10 M H₂SO4 to neutralize 10.0 mL of NaOH. What is the concentration of the NaOH solution?
2 A 044M
OB. 0.22 M
O C 0.11 M
OD. 0.055 M
Answers
The concentration of the NaOH solution required for the reaction given the data is 0.44 M
Balanced equationH₂SO₄ + 2NaOH —> Na₂SO₄ + 2H₂O
From the balanced equation above,
The mole ratio of the acid, H₂SO₄ (nA) = 1The mole ratio of the base, NaOH (nB) = 2How to determine the concentration of NaOHVolume of acid, H₂SO₄ (Va) = 22 mL Concentration of acid, H₂SO₄ (Ca) = 0.1 MVolume of base, NaOH (Vb) = 10 mLConcentration of base, NaOH (Cb) =?CaVa / CbVb = nA / nB
(0.1 × 22) / (Cb × 10) = 1 / 2
2.2 / (Cb × 10) = 1 / 2
Cross multiply
Cb × 10 = 2.2 × 2
Cb × 10 = 4.4
Divide both side by 10
Cb = 4.4 / 10
Cb = 0.44 M
Thus, the concentration of the NaOH solution is 0.44 M
Learn more about titration:
https://brainly.com/question/14356286
#SPJ1
5. If you have 5.0 L of a 3 molar saline solution of sodium chloride in water, how many
grams of NaCl would you find if you boiled off all the water?
Answers
You would have 175.32 grams of NaCl after boiling out all the water from 5.0 L of a 3 M NaCl solution.
When sodium chloride is boiled in water, what happens?Salt dissolves in water, forming sodium and chloride ions. If all the water were to be evaporated by boiling, the ions would join once more to produce solid salt. NaCl is safe to boil without harm, nevertheless. 2575 F, or 1413 C, is the boiling point of sodium chloride.
Three moles of NaCl would remain after boiling off all the water from a 5.0 L solution of 3 M NaCl. You can use the molar mass of NaCl, which is 58.44 g/mol, to get the mass of NaCl.
Mass of NaCl = moles of NaCl x molar mass of NaCl
Mass of NaCl = 3 mol x 58.44 g/mol
Mass of NaCl = 175.32 g
To know more about solution visit:-
https://brainly.com/question/30886177
#SPJ1
How many grams of carbon dioxide are produced when 191 g of methane (CH4) are burned
completely as shown in the reaction below:
CH4 + 202 + CO2 + 2H2O
Answers
Answer:
524g CO2
Explanation:
Just took the quiz
What is represented by a straight line on a graph?
o the sum of the independent and dependent variables
O only the independent variable
O only the dependent variable
o the relationship between independent and dependent variable
1 2
3
4
5
Answers
Answer:
the relationship between independent and dependent variable
Explanation:
A straight line or linear graph is one of the ways to represent a given data. It shows the relationship between two given set of data; one called the independent variable is plotted on the x-axis (horizontal) while the other called the dependent variable is plotted on the y-axis (vertical).
The straighter the line is, the stronger the relationship between the two variables and vice versa. Hence, the straight line in the graph represents the relationship between independent and dependent variable.