If 28.0 grams of N2 and 5.04 grams of H2 are reacted, producing 17.8 grams of NH3. the percent yield is 52.4%. Therefore, the answer is option 3,
To calculate the percent yield, we first need to calculate the theoretical yield of NH3 based on the amounts of N2 and H2 that were reacted.
The balanced chemical equation for the reaction is:
N2 + 3H2 → 2NH3
From the equation, we can see that 1 mole of N2 reacts with 3 moles of H2 to produce 2 moles of NH3. Therefore, the moles of N2 and H2 reacted can be calculated as:
moles of N2 = mass of N2 / molar mass of N2
= 28.0 g / 28.014 g/mol
= 0.999 mol
moles of H2 = mass of H2 / molar mass of H2
= 5.04 g / 2.016 g/mol
= 2.5 mol
Since N2 is the limiting reactant (its mole value is less than H2's mole value), we can calculate the amount of NH3 produced based on the mole ratio of N2 and NH3:
moles of NH3 = 2/1 x moles of N2
= 2/1 x 0.999 mol
= 1.998 mol
The theoretical yield of NH3 can be calculated from its mole value:
mass of NH3 = moles of NH3 x molar mass of NH3
= 1.998 mol x 17.031 g/mol
= 34.06 g
Now, we can calculate the percent yield by dividing the actual yield (17.8 g) by the theoretical yield (34.06 g) and multiplying by 100:
percent yield = actual yield / theoretical yield x 100%
= 17.8 g / 34.06 g x 100%
= 52.24%
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what volume is needed to make a 2.45 M solution of KCl using 0.50 mol of KCl
The molarity of a substance is simply defined as the mole of solute per unit litre of the solution. Mathematically, it is expressed as:
[tex]Molarity = \frac{mole}{volume }[/tex]
From the question given above, the following data were obtained:
Molarity of KCl = 2.45 M
Mole of KCl = 0.5 mole
Volume =?The volume of KCl needed can be obtained as follow:
[tex]Molarity = \frac{mole}{volume }\\\\2.45 = \frac{0.5}{Volume }[/tex]
Cross multiply
2.45 × Volume = 0.5
Divide both side by 2.45
[tex]Volume = \frac{0.5}{2.45}\\[/tex]
Volume = 0.20 LTherefore, 0.20 L is needed to make the solution.
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What is the correct symbol equation for the reactions between propanoic acid + sodium carbonate?
Explanation:
[tex]2CH _{3}CH_{3}COOH + Na _{2}CO_{3} → 2CHCHCOONa + 2H ^{ + } + CO_{3} ^{ 2- } [/tex]
What type of conversion is taking place when natural gas is used to heat water?
A. Chemical energy into thermal energy.
B. Thermal energy into mechanical energy.
C. Mechanical energy into electromagnetic energy.
D. Electromagnetic energy into chemical energy.
Answer:
A
Explanation:
I looked it up and this was the answer for your question
Can someone help me please
Answer these questions to get marked as a BRAINLIEST!!!!
Answer:
c
Explanation:
Answer:
I think ur answer would be C.)
Explanation:
hope this helps <3
What geologic process could have formed the channel on Mars?
Answer:
How can we decide which geologic process formed the channel on Mars? Students figure out: The channel on Mars was probably formed by water. The rover Curiosity found rocks near the channel that were made up of many smaller rocks.
Explanation:
Hope it helps! Correct me if I am wrong :>
Can you please mark me as brainlest?
Answer:Water
Explanation:
Water could have formed the channel on Mars because some of the rocks that scientists studied from the earth looks similar to the rocks on Mars.
The surface temperature of a white dwarf is higher than a red supergiant. True or False
Answer:
True.
Explanation:
How did mitochondria
become part of the cell?
Answer: The mitochondria, as bacteria, only wanted to rob the host cells of their energy and then leave them to die. But the bacteria soon realized the benefit of working together with simple cells. The simple cells provide them with antioxidants to protect them from free radicals and toxic reactive oxygen species that the mitochondria generate as a byproduct of energy production.
Hope dis helps!
:)
This question is about iron three of the raw material added to a blast furnace used to extract iron from henatite are coke hematite and limestone name one other raw material added to the blast furnace
Answer: The fourth material that is added to the blast furnace is HOT AIR which provides OXYGEN for used for combustion of carbon (Coke).
Explanation:
Iron is the second most abundant metal found in the earth's crust after aluminium. It is not found in the free metallic state but are extracted from rocks which are rich in iron that contains other materials. These are known are iron ores and the most common iron ores are haematite ( Fe2O3).
Iron can be extracted from its ore with the used of blast furnace. The materials used for extraction of iron includes:
--> Coke
--> haematite( iron ore)
--> limestone and
--> Hot air.
The iron ore is first roasted in air so that iron(III)oxide is produced. The iron(III)oxide is then mixed with coke and limestone and heated to a very high temperature. Hot air is introduced into it from the bottom of the furnace. The coke is oxidizes the the oxygen in the hot air blast to liberate carbondioxide.
if you had to explain to a friend how to balance a chemical equation, what
would you say to them?
Answer:
make sure that the number of atoms on the left side of the equation equals the number of atoms on the right.
Explanation:
A chemical reaction can be balanced by multiplying each side with suitable integers such that the number of each element in the reaction must be equal number on both side.
What is a balanced chemical equation?According to the law of conservation of mass for a chemical reaction, the total mass in the reactant side is equal to the total mass in the product side. Thus, a balanced chemical equation represents the perfect stoichiometry for each reactants and products.
The number of each elements in both side have to be equal in number. If they are unequal on both side, we can balance the reaction by multiplying with suitable integers.
Lets have one example. Consider the given reaction.
[tex]\rm CH_{4} + O_{2} \rightarrow H_{2}O + CO_{2}[/tex]
Here, 4 H are in left side and only 2 in right side. Similarly number of oxygen also not balanced.
The balanced equation requires a coefficient of 2 for water and 2 for oxygen in reactant thus, it can be written as:
[tex]\rm CH_{4} + 2O_{2} \rightarrow 2H_{2}O + CO_{2}[/tex]
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Balance each equation by entering the correct coefficients.
NH3 +
O2 →
NO +
H2O
Balanced equation:
4 NH3 + 5 O2 = 4 NO + 6 H2O
Explain the role light plays on the rate
of photosynthesis.
Answer:
The process of photosynthesis occurs when green plants use the energy of light to convert carbon dioxide (CO2) and water (H2O) into carbohydrates. Light energy is absorbed by chlorophyll, a photosynthetic pigment of the plant, while air containing carbon dioxide and oxygen enters the plant through the leaf stomata.
Which statement describes how snow is formed?
Answer:Snow in the atmosphere. Once snow crystals form in the atmosphere, they grow by absorbing surrounding water droplets. The snowflakes we end up seeing on the ground are an accumulation of these ice crystals.
Explanation:
Answer: Snow is defined as wet if there's a presence of water. within the context of snow formation, "dry" and "wet" don't seem to be used literally. Instead, they're wont to provide a distinction supported how each kind of snow is created and therefore the resulting property of either type. When the snowflakes are formed within the atmosphere, gravity takes over. Explanation: Because there were no statements I had to show the definition instead I hope this helped you to find your answer
89. What is the pressure of a fixed volume of a gas at 30.0C if it has a pressure of 1.11atm at 15C?
0.555 atm is the pressure of a fixed volume of a gas at 30.0C if it has a pressure of 1.11atm at 15C.
What is an ideal gas equation?The ideal gas equation, pV = nRT, is an equation used to calculate either the pressure, volume, temperature or number of moles of a gas.
According to Ideal Gas Equation,
PV = nRT
Therefore, P ∝ T
P₁T₂ = P₂T₁
Given :
P₁ = ?
P₂ = 1.11 atm
T₁ = 30.0 C
T₂ = 15 C
Solving :
P₁ x 30 = 1.11 x 15
P₂ = 0.555 atm
Hence, 0.555 atm is the pressure of a fixed volume of a gas at 30.0C if it has a pressure of 1.11atm at 15C.
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HELP ME ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!
Answer:
Digestive
Explanation:
What is radiation exactly
radiation is energy that comes from a source. (travels through the speed of light)
how many kg of solvent would contain 130 grams of ZnBr2 if the solution was 0.950 grams
Answer:
0.00731 kg
Explanation:
Given that solution is a product of solute and solvent.
Hence, solution = solute * solvent
In this case, the solution is given as 0.950 grams = 0.00095 kilograms
solute is given as 130 grams = 0.13 kilograms
Hence to get the amount of solvent in kilograms, we have
Solution ÷ Solute => 0.00095 ÷ 0.13
= 0.0073076923
=> 0.00731 kilograms
EASY SCIENCE QUESTION
Answer:
utcluclult
Explanation:
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Answer:
no WAYYYYYYY ITS SO EASY!!111!11
Explanation:
Which mass is made up of 6.02x10^23 atoms? none of these 23 g sodium 42 g krypton 24 g carbon 78 g potassium
Answer:
23 g sodium
Explanation:
In chemistry, one mol (1mol) of a substance equals Avagadro's number or constant (6.02 × 10^23 atoms/particles/molecules).
According to this question in which the mass of different elements were given, the mass of the element that equals 6.02 × 10^23
Using the formula; mole = mass/molar mass
- Sodium = 23g/23g/mol = 1mol
- Krypton = 42g/84g/mol = 0.5mol
- Carbon = 24g/12g/mol = 2mol
- Pottasium = 78g/39g/mol = 2mol
Therefore, from the above illustration, it can be observed that only 23g of sodium contains 1 mol, hence, 23g sodium contains 6.02 × 10^23 atoms.
Will there ever be grams of a limiting reactant remaining after a reaction has stopped? Why or why not?
Assuming the reaction is complete, there should be no limiting reactant remaining after a reaction. This is because the limiting reactant, by definition, is "the reactant that is completely used up in a reaction."
Which of the following is a chemical property of water at 4°C?
its temperature
its color
its ability to decompose into hydrogen and oxygen
its state
Answer:
At 4°C what is not able to decompose into hydrogen and oxygen chemical changes cannot be reverted, in this case it can. It will not change color, because water is always clear, and won't at this state turn into ice. though it can be reverted.
Explanation:
I hope that is correct that's all I've learned so far!
Answer:
A) Its temperature
Explanation:
What is the mass of an element with 3 protons and 4 neutrons? Also, how many neutrons are in the nucleus of an atom that has an atomic mass of 36 and atomic number of 25?
Convert 300K to degrees Celsius.
A full moon is observed every...
A. 2 weeks.
B. 24 hours.
C. 29.5 days.
D. 365 days
correct=brainliest
Answer:
C
Explanation:
I will seriously give all my points to someone who can help me with my science homework page; please. I'm so bad at science
Which combination of carboxylic acid and alcohol produces this ester?
If you can solve both
Will mark brainly
ASAP
Answer:
1. answer is subcutaneous tissue 2. answer is spleen
Explanation:
The subcutis is also known as the hypodermis or subcutaneous layer, and functions as both an insulator, conserving the body's heat, and as a shock-absorber, protecting the inner organs.
Excretory Organs. Organs of excretion include the skin, liver, large intestine, lungs, and kidneys. Together, these organs make up the excretory system.
Answer:
the answer is Subcutaneous Tissue
Explanation:
and the second one is Intestine
In plant cells, how are chloroplasts and mitochondria related?
Answer:
Mitochondria are the "powerhouses" of the cell, breaking down fuel molecules and capturing energy in cellular respiration. Chloroplasts are found in plants and algae. They're responsible for capturing light energy to make sugars in photosynthesis.
Which squirrel do you think is better suited for the environment, the gray one or the white one? and why
Answer:
The grey squirrel.
Explanation:
This is your answer because the white one would have a harder time to blend in with the tree's and the environment, whilst the grey one is better suited for its environment better due to the fact that it can blend in with the trees, and hide better.
If you evaporated 722 mL of a 7.8 M solution of NaCl, what mass of NaCl would you recover?
Answer:
0.19g NaCl
Explanation:
Multiply the volume by the concentration to get the moles. Then, convert moles to grams which gives you that.