how cold does it have to be for boiling water to evaporate
Answers
In order for boiling water to evaporate, it must be hot. The temperature of boiling water is usually between 212°F (100°C) and 212°F (373.15 K).
When it is extremely cold outside, it is possible to observe boiling water evaporate quickly in the cold air. This is because the air is dry and cold, and it has a low humidity level. Boiling water is converted to steam when it evaporates. At higher altitudes or when it is colder outside, the boiling temperature of water decreases.
When the temperature is lower than the boiling point, the boiling water converts to steam and evaporates. In cold, dry air, the evaporating water cools the boiling water much faster than it does in warmer air, allowing for the immediate transition from boiling to steam.
You can learn more about humidity at: brainly.com/question/30672810
#SPJ11
Related Questions
What is the number of carbon atoms in a cycloalkyne with 8 hydrogen atoms
Answers
Answer:
4
Explanation:
C4H8
what percentage will have heterozygous genotype?
Answers
Answer:
In another example (shown below) if the parent plants both have heterozygous (YG) genotypes, there will be 25% GG offspring in average. These percentages are determined based on the fact that each of the 4 offspring boxes in a Punnett square is 25% (1 out of 4)
I hope this helps! :D
Be sure to answer all parts. Write the number of individualions per formula unit and the coordination number of themetal ion in each of the compounds below. Dibromobis(ethylcuediamine)cobalt(III) sulfate (Ions? and Coordination number?)
Answers
The compound dibromobis(ethylenediamine)cobalt(III) sulfate, there are 3 individual ions per formula unit: one cobalt(III) complex ion [Co(en)2Br2]+3, one sulfate ion (SO4)^2-, and three water molecules as each formula unit contains three waters of hydration.
For Dibromobis(ethylcuediamine)cobalt(III) sulfate, the number of individual ions per formula unit and the coordination number of the metal ion are: - Number of individual ions per formula unit: There are a total of 6 ions per formula unit.
The compound has the following formula: [Co(ethylenediamine)2Br2]SO4. This means that there are two ethylenediamine ligands, each contributing 2 nitrogen atoms for a total of 4 nitrogen atoms.
Each nitrogen atom has a lone pair of electrons that can coordinate with the cobalt ion. There are also 2 bromide ions and 1 sulfate ion in the formula.
So, the total number of individual ions per formula unit is 4 nitrogen atoms + 2 bromide ions + 1 sulfate ion = 6 ions. - Coordination number of the metal ion: The metal ion in this compound is cobalt(III). Cobalt(III) has a coordination number of 6, which means that it can coordinate with 6 ligands. In this compound, there are 2 ethylenediamine ligands, each contributing 2 nitrogen atoms for a total of 4 nitrogen atoms.
The coordination number of the metal ion (cobalt) in this compound is 6, as there are two ethylenediamine (en) ligands, each with two nitrogen atoms coordinating to cobalt, and two bromine atoms also coordinating to cobalt (2x2 + 2 = 6).
The 4 nitrogen atoms coordinate with the cobalt ion, leaving 2 open coordination sites. These sites are occupied by the 2 bromide ions, giving a coordination number of 6 for the cobalt ion.
Visit here to learn more about Atoms:
brainly.com/question/26952570
#SPJ11
At the same conditions of temperature and pressure, 1.0 dm3 of a gas X has a mass of 3.0 g,
while 1.0 dm3 of gas Y has a mass of 2.8 g.
What is the ratio of the molecular masses of the two gases?
Answers
The ratio of the molecular masses of gas X to gas Y is approximately 1.07.
To find the ratio of the molecular masses of gases X and Y, we need to determine the number of moles of each gas using the ideal gas law equation:
PV = nRT
Given that the conditions of temperature and pressure are the same for both gases (assuming they behave ideally), we can use the equation to calculate the number of moles.
For gas X:
PV = nXRT
nX = (PV) / RT
For gas Y:
PV = nYRT
nY = (PV) / RT
Since the temperature, pressure, and volume are the same for both gases, we can simplify the equation:
nX / nY = (PV) / (PV) = 1
This means that the ratio of the number of moles of gas X to gas Y is 1:1.
Now, to find the ratio of the molecular masses, we can divide the mass of gas X by the number of moles of gas X, and the mass of gas Y by the number of moles of gas Y:
Ratio of molecular masses = (mass of gas X / nX) / (mass of gas Y / nY)
= (3.0 g / nX) / (2.8 g / nY)
= (3.0 g / 1 mole) / (2.8 g / 1 mole)
= 3.0 / 2.8
≈ 1.07
Learn more about molecular masses, here:
https://brainly.com/question/15880821
#SPJ1
Which safety procedure could prevent an accident?
using a fire extinguisher
using glass without chips or cracks
smelling a mixture of chemicals
getting a bandage out of the first aid kit when bleeding
Answers
Answer:
B
Explanation:
Does Honey have at least one carbon with tetrahedral geometry?
Answers
Answer:
Yes, Honey has at least one carbon with tetrahedral geometry. Honey is a complex mixture of sugars and other organic compounds, many of which contain carbon atoms with tetrahedral geometry.
For example, the sugars in honey, such as glucose and fructose, contain multiple carbon atoms with tetrahedral geometry.
7. Explain how water in the Earth's polar regions can produce water vapour even
when the temperature is very low.
Answers
Where energy from the sun is enough to break the bonds between water molecules in the ice and convert them directly into water vapor without passing through the liquid phase.
What is Sublimation?
Sublimation is a physical process in which a solid substance is transformed directly into a gas without passing through the liquid phase. In other words, sublimation occurs when a solid substance changes its state directly to a vapor state, bypassing the liquid state.
Sublimation occurs when the vapor pressure of a solid exceeds the atmospheric pressure, causing the solid to transform into a gas without melting. This process requires energy to break the intermolecular bonds holding the solid together. This energy is typically supplied through heating or a decrease in pressure.
Water in Earth's polar regions can produce water vapor even when the temperature is very low due to a process called sublimation. Sublimation is a phase transition from a solid directly to a gas, without passing through the liquid phase. This process occurs when the vapor pressure of the solid (in this case, ice) exceeds the atmospheric pressure.
In the polar regions, the air is very cold and dry, with low atmospheric pressure. When the sun shines on the ice or snow, it provides energy that causes the surface layer of the ice to evaporate directly into water vapor without melting into liquid water.
Learn more about Sublimation from given link
https://brainly.com/question/29624780
#SPJ1
state the homologous series to which the butane belongs
Answers
Answer:
The homologous series of straight-chained alkanes
Explanation:
Butane belongs to Alkane homologous series.
Note -
A homologous series is a group of organic compounds having similar structures and similar chemical properties in which the successive compounds differ by CH₂ group.
Vacuum-packaging food is an effective means for stopping the growth of bacteria.
true or false
Answers
Answer:
True
Explanation:
Vacuum packing is a method of packaging that removes air from the package before sealing. ... On a more short-term basis, vacuum packing can also be used to store fresh foods, such as vegetables, meats, and liquids, because it inhibits bacterial growth. Vacuum packing greatly reduces the bulk of non-food items.
Examine the EM spectrum chart. Describe what is happening as the EM spectrum goes
from Radio Waves to Gamma rays,
Vight
Uno
Somme
Morowaves
Infrared
Radio Waves
Woman
w
w
Wavelength
The amplitude increases
The wavelength increases
The wavelength decreases
The amplitude decreases
Answers
Answer:
The wavelength decreases
Explanation:
As you go along the EM spectrum from radio waves to gamma rays, the wavelength decreases as the wave's energy and frequency increase.
Which is true of binary ionic compounds?
Select one:
a. They consist of only two atoms.
b. They consist of atoms of only two elements.
c. They contain two different anions.
d. They have bonds that share two valence electrons.
Answers
Answer:
Its a or d if im stupid my b
Explanation:
Binary ionic compounds consist of atoms of only two atoms and hence the term binary is given to them.
What are ionic compounds?Ionic compounds or electrovalent compounds are the type of compounds which are formed between two elements when there is an exchange of electrons which takes place between the atoms resulting in the formation of ions.
When the atom looses an electron it develops a positive charge and forms an ion called the cation while the other atom gains the electron and develops a negative charge and forms an ion called the anion.
As the two atoms are oppositely charged they attract each other which results in the formation of a bond called the ionic bond and the compound is called ionic compound.
When the compounds consist of atoms of only two elements the compound is called as a binary ionic compound.
Learn more about ionic compounds,here:
https://brainly.com/question/9167977
#SPJ6
how many moles of koh are contained in 250 ml of a 2.0 m solution of koh
Answers
Assuming that your 2.0 m is an M for molarity
I used the formula M=number of mold/L
Converted 250mL to .250L by dividing by 1000
0.5 moles of KOH contained in 250 mL of a 2.0 M solution of KOH.
What is molarity?
Molarity is a measure of the concentration of a solution, defined as the number of moles of solute per liter of solution.
It is commonly denoted as "M" and has units of moles per liter (mol/L). The molarity of a solution can be calculated by dividing the number of moles of solute by the volume of the solution in liters.
Given:
Volume = 250 ml
250 mL = 0.25 L
Molarity = 2.0 m
To calculate the number of moles of KOH in a solution, the formula is:
Moles of solute = Molarity x volume of solution (in liters)
Use the formula:
Moles of KOH = 2.0 M x 0.25 L
Moles of KOH = 0.5 moles
Thus, there are 0.5 moles of KOH in 250 mL of a 2.0 M solution of KOH.
To learn more about the molarity, follow the link:
https://brainly.com/question/8732513
#SPJ2
what two factors affect the pressure in a solid
Answers
There are four main factors that can affect the reaction rate of a chemical reaction:
Reactant concentration. Increasing the concentration of one or more reactants will often increase the rate of reaction. ...
Physical state of the reactants and surface area. ...
Temperature. ...
Presence of a catalyst.
please make me brainlist answer
Tornadoes can negatively affect an ecosystem when
Answers
Answer:
b, their strong winds uproot many of the important plants
Explanation:
Activity 7: Crossword Puzzle
Directions Complete the crossword by filling in the word that describes each clue
Across:
2. with two symmetrical shells - mirror images of each other.
the term "crinoid" means
5. rocktype made of layers of sand and clay
7. multicellular organisms that often live in colonies
Down:
1. exoskeletons are made up of this material
4. lived inside their shells
6. phylum where starfish and sea urchins belong
8. individuality of coral is called
Need answer po
Answers
Answer: 2. with two symmetrical shells - mirror images of each other.
the term "crinoid" means: 6. phylum where starfish and sea urchins belong
4. lived inside their shells: 1. exoskeletons are made up of this material
7. multicellular organisms that often live in colonies: 8. individuality of coral is called
Explanation:
Crinoid is a term that can be used to describe the radial symmetry of animals that have oral (side of mouth) and aboral surfaces (opposite to the mouth). It is characterized by the mouth at the top surface and surrounded by the arms for feeding it. This is a characteristic feature of animals like star fish and sea urchins and echinoderm animals.
The exoskeleton is a protective shell which protect the animal from the external environment like water, sunlight and predation.
The multicellular organisms that live in the colonies they form coral reef and individually the are called the coral polyp.
Gasohol is a mixture of gasoline and ethanol (grain alcohol), C2H5OH. Calculate the maximum work that could be obtained at 25 °C and 1 atm by burning 1. 003 mol of C2H5OH. C2H5OH(1) + 302(g) 2C02(g) + 3H20(g) Maximum work = kJ Use correct number of significant digits;
Answers
Gasohol is a blend of gasoline and ethanol. To determine the maximum work that can be obtained by burning 1.003 mol of C2H5OH at 25°C and 1 atm, the Gibbs free energy equation can be utilized. What is Gibbs free energy equation? Gibbs free energy equation is a thermodynamic equation that quantifies the maximum quantity of work that may be obtained during a chemical reaction. T
he equation is as follows: ΔG = ΔH - TΔSThe values of ΔH and ΔS are calculated from thermodynamic tables or by calculating the enthalpy and entropy of the products and reactants, and the temperature, T, is usually specified in Kelvin. The change in Gibbs free energy, ΔG, is the maximum amount of energy that can be obtained from the reaction in the form of useful work if the reaction takes place at constant pressure and temperature. The reaction will proceed spontaneously if ΔG is negative. And if ΔG is positive, the reaction will not take place spontaneously. The solution to this problem is shown below:
First, let's figure out how much heat is produced when one mole of C2H5OH is burnt.ΔHrxn = [2(moles of CO2)(-393.5 kJ/mol) + 3(moles of H2O)(-285.8 kJ/mol)] - [(moles of C2H5OH)(-277.7 kJ/mol)]ΔHrxn = [2(2.006 mol)(-393.5 kJ/mol) + 3(3.009 mol)(-285.8 kJ/mol)] - [1.003 mol(-277.7 kJ/mol)]ΔHrxn = -2043.5 kJ/mol. Now, we'll figure out the entropy change for the reaction.ΔSrxn = [2(moles of CO2)(213.8 J/mol-K) + 3(moles of H2O)(69.9 J/mol-K)] - [(moles of C2H5OH)(160.7 J/mol-K)]ΔSrxn = [2(2.006 mol)(213.8 J/mol-K) + 3(3.009 mol)(69.9 J/mol-K)] - [1.003 mol(160.7 J/mol-K)]ΔSrxn = -104.3 J/mol-KThe temperature in Kelvin is 25°C.273 + 25 = 298 KΔG = ΔH - TΔSΔG = -2043.5 kJ/mol - (298 K)(-104.3 J/mol-K)/1000ΔG = -2032.6 kJ/mol. Therefore, the maximum work that can be obtained by burning 1.003 mol of C2H5OH is 2032.6 kJ/mol, which is the value of ΔG.
To know more about Gibbs free energy visit
https://brainly.com/question/13795204
#SPJ11
At 25 degrees C, a 15.000 g sample of an unknown liquid was determined to have a volume of 19.01 mL.
At 25 degrees C, water has a density of 0.9982 g/mL. If the unknown liquid had been water, what volume would it have had?
Answers
The mass of a chemical per unit volume is referred to as its density. A millilitre of temperature of 25 degrees Celsius has a density of 0.9982 grammes per millilitre, or 0.9982 grammes per millilitre.
Given that the unknown substance had a mass of 15.000 g and a density of 0.9982 g/mL at 25 °C, it would have had a volume of 15.000 f / 0.9982 c e = 15.068 mL if it had been water. However, given that the actual amount of the unidentified liquid was found to really be 19.01 mL, you may infer that it is not water because it has a distinct density from water.
Learn more about density here:
https://brainly.com/question/29775886
#SPJ4
5. View the image below and answer the question.
Answers
Answer:
where is the question?
If a flexible hot air balloon has a volume of 350,000 L of air at 40 degrees C and 1 atm,
how many moles of air are in the balloon?
How do I solve this?
Answers
If a flexible hot air balloon has a volume of 350,000 L of air at 40 degrees C and 1 atm, 13636 moles of air are in the balloon . This is taken out by ideal gas law.
What is ideal gas law?The ideal gas law, also known as the general gas equation, is the state equation for a hypothetical ideal gas. Although it has several limitations, it is a good approximation of the behavior of many gases under many conditions. Benoît Paul Émile Clapeyron proposed it in 1834 as a combination of empirical Boyle's law, Charles' law, Avogadro's law, and Gay Lussac's law.
using the equation P × V= n × R × T
P = Pressure = 1 atm
V = Volume = 350000 L
n = moles
R = 0.082 L.atm.K⁻¹.mol⁻¹
solving for n ,
moles n = 13636 moles
to know more about ideal gas law , visit ;
brainly.com/question/28257995
#SPJ1
Look at the periodic table. What type of elements are shown in green on the table?
Answers
In the periodic table, elements in green are called transition metals and are all metallic in nature.
What is periodic table?Periodic table is a tabular arrangement of elements in the form of a table. In the periodic table, elements are arranged according to the modern periodic law which states that the properties of elements are a periodic function of their atomic numbers.
It is called as periodic because properties repeat after regular intervals of atomic numbers . It is a tabular arrangement consisting of seven horizontal rows called periods and eighteen vertical columns called groups.
Elements present in the same group have same number of valence electrons and hence have similar properties while elements present in the same period show gradual variation in properties due to addition of one electron for each successive element in a period.
Learn more about periodic table,here:
https://brainly.com/question/7373020
#SPJ1
Limewater is calcium hydroxide solution. In an experiment to find the concentration of calcium hydroxide in limewater, 25.0 cm³ of limewater needed 18.8 cm³ of 0.0400 mol/dm³ hydrochloric acid to neutralise it.
Ca(OH)₂(aq) + 2HCl(aq) → CaCl₂(aq) + 2H₂O(1)
Calculate the concentration of the calcium hydroxide in:
a mol/dm³
b g/dm³
(A: H= 1, O=16, Ca = 40)
Answers
From the balanced equation, we can see that 1 mole of calcium hydroxide reacts with 2 moles of hydrochloric acid. Therefore, the number of moles of calcium hydroxide in the limewater is:
moles of Ca(OH)₂ = (0.0400 mol/dm³) × (18.8 cm³ / 1000 cm³) × (1/2) = 0.00376 mol
a) The concentration of calcium hydroxide in mol/dm³ is:
concentration of Ca(OH)₂ = moles of Ca(OH)₂ / volume of limewater in dm³
We are given the volume of limewater as 25.0 cm³, which is equivalent to 0.025 dm³. Therefore,
concentration of Ca(OH)₂ = 0.00376 mol / 0.025 dm³ = 0.150 mol/dm³
b) The molar mass of calcium hydroxide is:
Ca(OH)₂ = (1 × 40.08 g/mol) + (2 × 16.00 g/mol) + (2 × 1.01 g/mol) = 74.10 g/mol
To convert the concentration from mol/dm³ to g/dm³, we need to multiply by the molar mass. Therefore,
concentration of Ca(OH)₂ = 0.150 mol/dm³ × 74.10 g/mol = 11.1 g/dm³
So, the concentration of calcium hydroxide in limewater is 0.150 mol/dm³ or 11.1 g/dm³.
Ca(OH)₂(aq) + 2HCl(aq) → CaCl₂(aq) + 2H₂O(l)
From the equation, we see that one mole of Ca(OH)₂ reacts with two moles of HCl.
a) We can use the given information to calculate the number of moles of HCl that reacted with the Ca(OH)₂ in the 25.0 cm³ of limewater:
Number of moles of HCl = concentration × volume
Number of moles of HCl = 0.0400 mol/dm³ × 18.8 cm³/1000 cm³
Number of moles of HCl = 0.000752 mol
Since two moles of HCl react with one mole of Ca(OH)₂, we have:
Number of moles of Ca(OH)₂ = 0.000752 mol / 2
Number of moles of Ca(OH)₂ = 0.000376 mol
The volume of the limewater used is 25.0 cm³, which is equivalent to 0.0250 dm³. Therefore, the concentration of calcium hydroxide in the limewater is:
Concentration of Ca(OH)₂ = number of moles / volume
Concentration of Ca(OH)₂ = 0.000376 mol / 0.0250 dm³
Concentration of Ca(OH)₂ = 0.015 mol/dm³
Therefore, the concentration of the calcium hydroxide in the limewater is 0.015 mol/dm³.
b) To calculate the concentration of Ca(OH)₂ in g/dm³, we need to use the molar mass of Ca(OH)₂:
Molar mass of Ca(OH)₂ = 1 × 40.08 g/mol (for Ca) + 2 × 16.00 g/mol (for O) + 2 × 1.01 g/mol (for H)
Molar mass of Ca(OH)₂ = 74.10 g/mol
The mass of Ca(OH)₂ in 25.0 cm³ of limewater can be calculated using the number of moles we previously calculated:
Mass of Ca(OH)₂ = number of moles × molar mass
Mass of Ca(OH)₂ = 0.000376 mol × 74.10 g/mol
Mass of Ca(OH)₂ = 0.0279 g
The volume of the limewater used is 25.0 cm³, which is equivalent to 0.0250 dm³. Therefore, the concentration of calcium hydroxide in the limewater in g/dm³ is:
Concentration of Ca(OH)₂ = mass / volume
Concentration of Ca(OH)₂ = 0.0279 g / 0.0250 dm³
Concentration of Ca(OH)₂ = 1.12 g/dm³
Therefore, the concentration of the calcium hydroxide in the limewater is 1.12 g/dm³
How is Zinc chloride formed in the lab and please tell the steps
Answers
Answer:
When zinc metal is reacted with hydrochloric acid, hydrogen gas is released and an aqueous solution of zinc chloride is produced. ... It is important that all of the zinc used be reacted and that large excess amounts of hydrochloric acid not be used.
Anhydrous zinc chloride is synthesized by treating zinc with hydrogen chloride. Whereas, hydrated and aqueous forms of zinc chloride are prepared by treating zinc with hydrochloric acid. Zinc metal could either be in the form of zinc sulfide or zinc oxide
Have a nice Day , Hope this helped you I would appreciate it if you could mark my answer brainliest
Merry Christmas
Answer: Anhydrous zinc chloride is synthesized by treating zinc with hydrogen chloride. ... Zinc metal could either be in the form of zinc sulfide or zinc oxide. ZnS(s) + 2 HCl(aq) → ZnCl2(aq) + H2S(g) There are impurities present in zinc chloride samples due to hydrolysis.
got this from goo.gle
Hope this helps.......... Stay safe and have a Merry Christmas!!!!! :D
Solution of an unknown concentration that has another solution slowly added to it.
Answers
Titration is the correct answer.
What is titration?
Titration, commonly referred to as titrimetry, is a typical quantitative chemical analysis method used in laboratories to ascertain the unidentified quantity of an analyte (Mednick and Kirschner, 2010). Titration is frequently referred to as volumetric analysis because it relies heavily on volume measurements. To determine concentration, a solution of the analyte or titrant reacts with a known concentration and volume of the titrant. Titrations come in a variety of forms with various protocols and objectives. Redox and acid-base titrations are the two most typical types of qualitative titrations.
Acid-base titrations rely on the solution-based neutralisation of an acid and a base. The acid-base indicator changes colour to signal when the titration has reached its endpoint.
Titrations carried out in the gas phase are known as "gas phase titrations," and they are specifically used to identify reactive species through their reaction with an excess of a titrant gas. In one typical gas phase titration, nitrogen oxide and gaseous ozone are titrated in accordance with the reaction
The amount of analyte in the initial sample is determined by quantifying the remaining titrant and product after the reaction has finished (for example, using FT-IR).
Learn more about titration from given link
https://brainly.com/question/18676
#SPJ4
Solution of an unknown concentration that has another solution slowly added to it _____________.
Rewrite 5.13467 X 10-6 in correct standard form
Answers
Question 11
Which formula represents a hydrocarbon?
C₂H6
C₂H5OH
C₂H5Cl
C₂H6O
Answers
Answer:
C₂H6
Explanation:
Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A
A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:
A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.
B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.
C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.
D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.
Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.
In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A
For more such questions on hydrocarbon visit:
https://brainly.com/question/21281906
#SPJ8
What is the theoretical yield of the reaction of aluminum oxide when 15 g of aluminum reacts with excess oxygen? 4al(s) + 3o2(g) ----> 2al2o3(s)
a) 15.0 g alo
b) 7.50 g alo
c) 56.7 g alo
d) 28.3 g alo
Answers
Taking into account the reaction stoichiometry, the correct answer is option d): the theoretical yield of the reaction of aluminum oxide is 28.3 grams.
Reaction stoichiometryIn first place, the balanced reaction is:
4 Al + 3 O₂ →2 Al₂O₃
By reaction stoichiometry, the following amounts of moles of each compound participate in the reaction:
Al: 4 molesO₂: 3 moles Al₂O₃: 2 molesThe molar mass of the compounds is:
Al: 27 g/moleO₂: 32 g/moleAl₂O₃: 102 g/moleThen, by reaction stoichiometry, the following mass quantities of each compound participate in the reaction:
Al: 4 moles ×27 g/mole= 108 gramsO₂: 3 moles ×32 g/mole= 96 gramsAl₂O₃: 2 moles ×102 g/mole= 204 gramsDefinition of theoretical yieldThe theoretical yield is the maximum amount of product that could be formed from the given amounts of reagents.
Theoretical yield of Al₂O₃ formedConsidering the limiting reagent, the following rule of three can be applied: if by reaction stoichiometry 108 grams of Al form 204 grams of Al₂O₃, 15 grams of Al form how much mass of Al₂O₃?
mass of Al₂O₃= (15 grams of Al×204 grams of Al₂O₃)÷ 108 grams of Al
mass of Al₂O₃= 28.3 grams
Finally, a mass of 28.33 grams of Al₂O₃ can be produced.
Learn more about the reaction stoichiometry:
brainly.com/question/7276371
brainly.com/question/24741074
brainly.com/question/24653699
#SPJ1
PLS HELP i will give 10 points
In Mendeleev’s Periodic Table, why was there no mention of Noble gases like Helium, Neon and Argon?
Answers
Answer:Answer choices are:
A. These elements did not fit in with his pattern.
B. These elements are gases and he didn't include gases.
C. The atoms of these elements had no atomic mass.
D. These elements had not yet been discovered.
___________________________________________________________
Correct answer choice is:
D. These elements had not yet been discovered.
What is the molar mass of aluminum sulfate? 278.0 g/mol 315.2 g/mol 306.2 g/mol 123.0 g/mol 342.2 g/mol
Answers
The molar mass of aluminum sulfate is 342.2 g/mol.
The molar mass of aluminium sulfate Al₂(SO₄)₃, will be equal to the sum of the molar masses of all the atoms that make up a mole of this compound.
From (Al₂(SO₄)₃, 1 mole of aluminum sulfate contains;
two moles of aluminum, 2xAl
three moles of sulfur, 3xS
twelve moles of oxygen, 3x4x0
From periodic table, the molar mass of aluminum, sulfur and oxygen is;
Al= 26.981538 g mol⁻¹
S= 32.065 g mol⁻¹
O=14.9994 g mol⁻¹
To find molar mass of aluminum sulfate we need to do
2xMmAl+3xMmS+12XMmO
2X26.981538 g mol⁻¹+3X32.065 g mol⁻¹+12X15.9994 g mol⁻¹
This will give Mm Al₂(SO₄)₃ = 342.150876 g mol⁻¹
Learn more about the Molar mass with the help of the given link:
https://brainly.com/question/12733757
#SPJ4
psoriasis is a disease that causes a red rash on the skin. which body system does psoriasis affect?
a. respiratory
b. integumentary
c. immune
d. digestive
e. circulatory
Answers
Answer:
The answer to this question is integumentary.
Explanation:
The answer is that because that is your skin area and so if you have a rash then if will affect that part.
It's b. integumentary
I got the test right
Which of the following statements does not describe the structure of an atom? (3 points) a Inside the nucleus of an atom are protons and neutrons. b Protons are positively charged sub-atomic particles. c Electrons are negatively charged sub-atomic particles. d Most of the mass of an atom comes from the electron cloud.
Answers
Answer:
D.
Explanation:
The electron cloud has negligible mass. Most mass come from the nucleus.