Answers
The theoretical yield of NaCl : 15 mol
Further explanationGiven
15 mol Na
15 mol Cl₂
Required
The theoretical yield of NaCl
Solution
Reaction
2Na + Cl₂ ⇒ 2NaCl
A theoretical yield is the amount of product that you calculate from the reaction equation according to the product and reactant coefficients
Find limiting reactant (mol : coefficient) :
Na = 15 : 2 = 7.5
Cl₂ = 15 : 1 = 15
The limiting reactant = Na(smaller ratio)
Mol of NaCl based on mol Na as limiting reactant.
From the equation, mol ratio of Na : NaCl = 2 : 2, so mol NaCl = 15 mol
Related Questions
PLEASE HELPPP!!!!!!!
Scientists observe patterns in matter. They organize matter into groups based on shared physical and chemical properties. Which statement describes a chemical property that many elements might share?
A. bonds easily with oxygen in the air
B. boils between 90°C and 100°C
C. shines when polished
D. floats in water
Answers
Answer:
a
Explanation:
bonding is chemical
A chemicals change includes bond making or breaking. The reaction between two atoms or molecules is their chemical property. Thus bonding with oxygen in air is a common chemical property of elements.
What is chemical change?A change in which a substance undergo chemical bond making or breaking and forming new products. Whereas, a physical change does not involve these bond breaking or formation instead a phase change occurs there. Such as conversion of solids to liquids.
All the elements in the periodic table have their characteristic chemical and physical properties. Metallic shining is a physical property of metallic elements and floats in water describes the density of that element which is a physical property.
Similarly, boiling and melting are physical properties and they do not include any bond formation or breaking of the element.
The reaction with oxygen in air called oxidation forming their oxidised product is a chemical change. Thus, option A is correct.
To find more about oxidation, refer the link below:
https://brainly.com/question/376562
#SPJ2
atomic radius(size)______ from left to right across a period on the periodic table
Answers
Answer:
Decreases
Explanation:
A 558 mg of a mixture of fluorene and benzoic acid was weighed out and subjected to an extraction and recrystallization. After this purification was completed the product crystals were dried and analyzed. The purification procedure produced 185 mg of fluorene and 144 mg of benzoic acid. Calculate the percent composition of this mixture.
Answers
Answer:
See explanation
Explanation:
Mass of mixture of fluorene and benzoic acid = 558 mg
Mass of pure fluorene after purification = 185 mg of fluorene
Mass of pure benzoic acid after purification = 144 mg of benzoic acid
Percentage of fluorene int he mixture = 185mg/558mg * 100 = 33.15 %
Percentage of benzoic acid in the mixture = 144mg/558mg * 100 = 25.81 %
Percentage of impurities = 100% - [33.15 + 25.81]
Percentage of impurities = 100 - 58.96
Percentage of impurities = 41.04 %
Pls help, science 8th grade question, #11 thx :)
Answers
A chemist determines by measurements that .060 moles of nitrogen gas participate in a chemical reaction. Calculate the mass of nitrogen gas that participates. Be sure your answer has the correct number of significant digits.
Answers
Answer:
1.7 g N₂
Explanation:
In order to convert moles of nitrogen gas (N₂) to grams, we'll use its molar mass:
Molar mass of N₂ = (Atomic Mass of N)*2 = (14.00 g/mol)*2 = 28.00 g/mol0.060 mol N₂ * 28.00 g/mol = 1.68 g N₂0.060 only has two significant digits, so the reported answer should have two significant digits as well. Meaning the answer is 1.7 g.
You are working in the lab and spill some acid on the counter. Because you don't want to get into trouble, you decide to clean it up by yourself. What would be best to reduce the acidity of the spill?
Answers
Answer:
By adding baking soda
Explanation:
The best way to reduce the acidity of the spill would be to add some amount of baking soda to the spill and then clean it up with a towel or any other appropriate item.
Baking soda is made up of sodium bicarbonate and has the capacity to react with acid to produce a salt and carbonic acid. The carbonic acid readily decomposes to produce carbon dioxide and water. For example, sodium bicarbonate reacts with hydrochloric acid according to the equation below:
[tex]NaHCO_3 + HCl --> NaCl + H_2CO3[/tex]
[tex]H_2CO_3 --> H_2O + CO_2[/tex]
One would expect the addition of a base to the spilled acid to work in a way as to neutralize the acid but bases are also corrosive and only a stoichiometrically balanced quantity would completely neutralize the acid. Thus, the quantity might not easily be determinable and one can end up doing more harm than good.
Hence, the best option is to add baking soda to the spilled acid to reduce its acidity before cleaning it off.
What type of charge do ionic compounds have
Answers
Answer:neutral
Explanation:ionic compounds is between a cation and anion so they cancel eachother out
PLEASE HELP ASAP I NEED IT HELP PEASEEEEEEEEEEE it’s number 4 (this is science)
Answers
Continent Polar - Cold and Dry
Maritime Polar - Cold and Humid
Arctic - Extremely Cold and Dry
Maritime Tropical- Warm and Humid
Hope this helps:)
PLEASE HELP!! PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP PLEASE HELP
CHEMJSTRY!! LONE PAIRS WILL GIVE BRAINLIEST IF CORRECT!
Answers
Answer:
T
Explanation:
Do the substances that are reactants in a chemical reaction remain the same after the reaction is complete?
Answers
The weight loss of an aluminum alloy corroding in a solution of hydrochloric acid was observed to be 0.250 g/cm2 after an 8 h immersion period [13]. What is the corresponding anodic current density in milliamperes per square centimeter, assuming that all the corrosion is due to the following anodic half-cell reaction:
Answers
This question is incomplete, the complete question is;
The weight loss of an aluminum alloy corroding in a solution of hydrochloric acid was observed to be 0.250 g/cm² after an 8 h immersion period [13]. What is the corresponding anodic current density in milliamperes per square centimeter, assuming that all the corrosion is due to the following anodic half-cell reaction:
Al → Al³⁺ + 3e⁻
The atomic weight is 58.7 g/mol
Answer:
Current density in milliamperes per square centimeter is 45.81 mA/cm²
Explanation:
Given the data in the question;
we know that Faradays law of electrolysis states that;
amount of substance produced at each electrode is directly proportional to the quantity of charge flowing through the cell.
so
m = ( Q/F) (M/z)
where m is the mass of substance liberated at an electrode( 0.250 g/cm²)
Q is the total electric charge passed through the substance
F is Faradays constant (96,500 C/mol)
M is the molar mass of the substance( 58.7 g/mol ) and Z is the number of electrons transferred(3)
Also
we know that; Q = It
where I is current and t is time( 8hrs × 60 × 60 = 28800 sec )
we substitute Q = It into our equation'
we have;
m = ( It/F) (M/z)
m = ItM / Fz
mFz = ItM
I = mFz / tM
so we substitute
I = [0.250 g/cm² × 96,500 C/mol × 3] / [ 28800 × 58.7 g/mol]
I = 72375 / 1690560
I = 0.04581 A/cm²
we know that; 1 ampere = 1000 milliampere
so
I = 0.04581 × 1000
I = 45.81 mA/cm²
Therefore, current density in milliamperes per square centimeter is 45.81 mA/cm²