Answer:
Explanation:
Quantum numbers are a set of numbers that describe the state of an electron in an atom. There are four types of quantum numbers:
Principal quantum number (n): This quantum number determines the energy level of an electron in an atom. The larger the value of n, the higher the energy level and the farther the electron is from the nucleus.
Azimuthal quantum number (l): This quantum number determines the shape of the electron orbital. The value of l can range from 0 to n-1, and it describes the angular momentum of the electron.
Magnetic quantum number (m): This quantum number determines the orientation of the electron orbital in space. The value of m can range from -l to +l, and it describes the orientation of the orbital.
Spin quantum number (s): This quantum number describes the intrinsic angular momentum, or spin, of an electron. The value of s is always ±1/2.
These four quantum numbers together describe the state of an electron in an atom, including its energy, shape, orientation, and spin. Understanding these quantum numbers is essential for understanding the behavior of electrons in atoms and for predicting the properties of chemical compounds.
Count the number of atoms in the formula: 2Ca(OH)2
Ca atoms
There are
type your answer...
There are
type your answer...
There are type your answer...
O atoms
Hatoms
The total number of atoms is type your answer...
The total number of atoms in the formula is 2 + 4 + 4 = 10 atoms.
What are atoms?
An atom is the basic unit of matter and the defining structure of elements. The term "atom" comes from the Greek word for indivisible, because it was once thought that atoms were the smallest things in the universe and could not be divided.
Atoms are composed of a nucleus, which contains positively charged protons and uncharged neutrons, surrounded by a cloud of negatively charged electrons. The number of protons in an atom's nucleus determines what element the atom is, as each element has a unique number of protons.
To count the number of atoms in the formula 2Ca(OH)2, we need to determine the number of each type of atom present.
In this formula, there are:
2 calcium atoms (Ca)4 oxygen atoms (O)4 hydrogen atoms (H)So, the total number of atoms in the formula is 2 + 4 + 4 = 10 atoms.
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1) Precipitation reactions are ones in which ______________________________________________________.
2) Show how the cations and anions would swap in a double displacement reaction between AgNO3 and BaCl2.
The precipitation and double displacement reaction are as follows:
What is a precipitation reaction?
Precipitation reactions are ones in which two aqueous solutions containing ions react to form an insoluble solid compound, which is called a precipitate. Precipitation reactions are a type of double displacement reaction, in which cations and anions exchange partners.
These reactions typically occur when two soluble salts are mixed together, resulting in the formation of an insoluble compound. Precipitation reactions are commonly used in analytical chemistry to identify the presence of certain ions in a solution.
The double displacement reaction between silver nitrate (AgNO3) and barium chloride (BaCl2) can be written as follows:
AgNO3(aq) + BaCl2(aq) -> AgCl(s) + Ba(NO3)2(aq)
In this reaction, the silver ion (Ag+) and the chloride ion (Cl-) swap partners to form insoluble silver chloride (AgCl), which precipitates out of solution. The barium ion (Ba2+) and the nitrate ion (NO3-) also swap partners to form soluble barium nitrate (Ba(NO3)2), which remains in solution.
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A beaker is known to contain 4.65x1024 molecules of sucrose, C12H22O11. How many cg of sucrose does the beaker hold?
According to the question, 1.6 x 1028 cg of sucrose does the beaker hold.
What is sucrose?
Sucrose is a type of sugar that is naturally present in many fruits and vegetables, and is also known as table sugar. It is composed of two simple sugars, glucose and fructose, and is the most common form of dietary sugar. It is used to sweeten many foods and beverages, and is also used in the food industry as a preservative. Sucrose is a disaccharide, which means that it is composed of two monosaccharides, or simple sugars, linked together.
The mass of a molecule of sucrose (C12H22O11) is 342.3 g/mol. Therefore, the number of cg of sucrose in the beaker is:
4.65 x 1024 molecules x 342.3 g/mol x 1 cg/10-2 g = 1.59 x 1028 cg
This can be further simplified to 1.6 x 1028 cg.
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Which coefficients correctly balance the equation below
KOH+BaCI- -> KCI + Ba(OH)2
2,2,2,1
1,2,1,2
2,1,2,1
2,2,2,1
The coefficients that correctly balance the equation below would be 2,1,2,1. The third option.
Balancing chemical equationsA balanced chemical equation will have an equal number of different atoms in the reactants and in the products, irrespective of whether there is a change of form or otherwise.
Thus, the balanced equation of the reaction whose equation is shown would be: [tex]2KOH+BaCI_2- - > 2KCI + Ba(OH)_2[/tex]
In other words, the coefficients of the correctly balanced equation are 2,1,2,1.
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5.
Why do you think hydrogen (element 1) is on both sides of the periodic table? (2 marks)
Name a metal that is in the liquid state at room temperature. (1 mark)
8. Explain the difference between an atom and an ion. (2 marks)
9.
6789
6.
Will astatine (element 85) look more like
marks)
7.
Use your periodic table, pick out which atom with the highest ionization energy in these lists: (1
mark each = 4 marks)
a) Na, Sr, Be, Rb
b) B. Al, C, Si
c)
Fr, Fe, Zn, Cl
d) Cu, Ag, Au, B
10. Why is second ionization energy of atom always larger than its first ionization energy? (1 mark)
11. Which of the atoms in each of the following groups has the largest atomic radius? (1 mark each
= 3 marks)
a) Cl, Si, K
b) Cs, Ca, Be
c) N, Al, Cl
12. Arrange these groups of atoms in order of increasing atomic radius: (1 mark each = 3 marks)
a) Xe, Ar, Kr
b) K, Br, Ca
c) B, C, N
13. Explain two reasons why atomic radii increase from top to the bottom. (2 marks)
14. Explain a reason why atomic radii decrease from the left to right. (1 mark)
15. Which atom in each of the following pairs has the highest electronegativity? (1 mark each
= 3 marks)
a) Zn or Ge
b) O or Te
c) Ba or Hg
16. Which atom in each of the pairs that follow has the higher electron affinity and therefore gives off
the most energy when it forms a negative ion? (1 mark each = 3 marks)
c) Si, Ga
a) Cl, Br
b) Se, Br
Answer:
I'll only answer the first 2 questions because there are too many questions.
1) Hydrogen basically does not really belong to Group 1 or 17 of the periodic table. To be exact, there is to such an extent that some might put it under no groups at all. Hydrogen has 1 electron in its valence shell, similar to elements in group 1. Still, it also has to gain 1 more electron to attain noble gas configuration (2 electrons for 1st shell, 8 electrons for 2nd shell). Hence, no one actually knows what hydrogen should be classified in, hence classifying it into either Group 1, 17 neither or both.
2) Mercury is the only metal that will be in liquid state at room temperature at 1 atm.
1. A region of land near the ocean can reasonably be expected to experience what type of effects
on its climate due to the influence of the nearby ocean?
2.Weather and climate are influenced by interactions involving what?
3.Thermal energy from evaporation water helps drive the weather systems. Which regions of earth would have the most evaporation
This is science but in gonna put a random thing bc there is no science option
Answer:
1. A region of land near the ocean can reasonably be expected to experience milder temperatures, higher humidity, and more frequent precipitation due to the influence of the nearby ocean.
2. Weather and climate are influenced by interactions involving the atmosphere, oceans, land, ice, and the sun.
3. Regions of earth with the most evaporation would be those with warm temperatures, high humidity, and plenty of sunshine.
Solid iron (III) hydroxide decomposes to produce iron (III) oxide and water vapor. Write a balanced equation. If 0.75 L of water vapor are produced at STP,
Fe(OH)3 --> Fe2O3 + H2O (YOU MUST BALANCE THIS BEFORE STARTING)
a. How many grams of iron (III) hydroxide were used? grams of iron (III) hydroxide (3 sig figs)
b. How many grams of iron (III) oxide were produced? grams of iron (III) oxide (3 sig figs)
The balanced equation for the reaction between iron (III) hydroxide and water vapor to produce iron (III) oxide is Fe(OH)₃ -> Fe₂O₃ + 3H₂O
a. 26.5 grams of Fe(OH)₃ used.
b. 40 grams of Fe2O3 produced
How to calculate grams used and produced?Determine the number of moles of water produced: 0.75 L of water at STP (standard temperature and pressure) is equal to 0.75 moles.
Find the number of moles of Fe(OH)3: The reaction produces 3 moles of water for every 1 mole of Fe(OH)3, so 0.75 moles / 3 = 0.25 moles of Fe(OH)3.
Find the mass of Fe(OH)3: Fe(OH)3 has a molar mass of 106 g/mol, so 0.25 moles * 106 g/mol = 26.5 grams of Fe(OH)3.
So the answer to part a is 26.5 grams of Fe(OH)3 were used.
Determine the number of moles of Fe2O3: 0.25 moles of Fe(OH)3 produced 0.25 moles of Fe2O3.
Find the mass of Fe2O3: Fe2O3 has a molar mass of 160 g/mol, so 0.25 moles * 160 g/mol = 40 grams of Fe2O3.
So the answer to part b is 40 grams of Fe2O3 were produced.
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I truck travel down the highway speed of 110 km/hr how long does a trip last the truck cover 2,200 km?
Answer:
20 hours
Explanation:
The time it takes for the truck to travel 2,200 km at a speed of 110 km/hr is calculated by dividing the total distance by the speed:
Time = Distance / Speed
Time = 2,200 km / 110 km/hr
Time = 20 hours
So it takes the truck 20 hours to cover the 2,200 km trip at a speed of 110 km/hr.
Aɳʂɯҽɾҽԃ Ⴆყ ɠσԃKEY ꦿ
Why does boiling water cook food so well?
Answer: Boiling Water enhances the texture of foods and tougher proteins, making them more edible.
Explanation: WHAT ELSE CAN IT DO?It's also hot enough to kill microbes, firm meats and fish, and soften vegetables
A chemist working as a safety inspector finds an unmarked bottle in a lab cabinet. A note on the door of the cabinet says the cabinet is used to store bottles of dimethyl sulfoxide, acetone, diethytamin, tetrahydrofuran, and carbon tetrachloride. The chemist plans to identify the unknown liquid by measuring the density and comparing to known densities. First, from her collection of Material Safety Data Sheets (MSOS), the chemist finds the following information: Next, the chemist measures the volume of the unknown liquid as 0.767 L and the mass of the unknown liquid as 682. g. Calculate the density of the liquid. Round your answer to 3 significant digits. g. cm^-3 Given the data above, is it possible to identify the liquid? yes no If it is possible to identify the liquid, do so. dimethyl sulfoxide acetone diethylamine tetrahydrofuran carbon tetrachloride times 10
Yes, it is possible to identify the liquid, and the density of the liquid is closest to 0.889 g/cm³ so the liquid is most likely tetrahydrofuran.
To calculate the density of the unknown liquid, we use the formula:
Density = Mass / Volume
Substituting the given values, we get:
Density = 682. g / 0.767 L
Density = 888.5 g/L
Rounding to three significant digits, the density of the unknown liquid is 889 g/L.
Using the information provided in the question, we can compare the density of the unknown liquid to the known densities of the listed chemicals. The densities (in g/cm³) of the chemicals are:
Dimethyl sulfoxide: 1.092
Acetone: 0.790
Diethylamine: 0.707
Tetrahydrofuran: 0.889
Carbon tetrachloride: 1.594
Comparing the density of the unknown liquid to the known densities, we see that it is closest to the density of tetrahydrofuran, which is 0.889 g/cm³. Therefore, it is likely that the unknown liquid is tetrahydrofuran.
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If the volume of the reaction vessel in the previous part was 1. 25 l , what amount of br2 (in moles) was formed during the first 15. 0 s of the reaction?.
0.4 amount of br2 (in moles) was formed during the first 15. 0 s of the reaction.
A chemical reaction is a process that causes a chemical transformation of one set of chemicals into another. Classically, chemical reactions involve changes involving only the position of electrons in the formation and breaking of chemical bonds between atoms, and changes in the nucleus (no change in the elements present) can often be described by chemical equations. Nuclear chemistry is a subset of chemistry that involves the chemical reactions of unstable radioactive elements in which both electronic and nuclear changes can occur.
Now,
Correct option is (C)
N2 +O2 ⇌2NO
At t = 0 2 4 0
At eq. 2-x 4-x 2x
Half a mole of nitrogen is used up at equilibrium,
x = 0.5
So, moles of NO=1.
Molar concept of NO at equilibrium = 1/ 2.5
= 0.4.
Complete Question:
The equilibrium N₂(g)+O₂(g)⇌2NO(g) established in a reaction vessel of 2.5 L capacity. The amounts of N₂ and O₂ taken at the start were respectively 2 moles and 4 moles. Half a mole of nitrogen has been used up at equilibrium. The molar concentration of nitric oxide is :
(1) 0.2 (2) 0.8 (3) 0.6 (4) 0.1
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A hamburger is found to contain 10.1 grams of fat, 30.3 grams of carbohydrate and 13.3 grams of protein. Calculate the percent fat, carbohydrates and protein for this sandwich. (Do not have to use dimensional analysis)
The percent fat, carbohydrates and protein for this sandwich are 18%, 56.4% and 24.71% respectively.
What is mass percentage?The mass percent might be used to denote a degree. Furthermore, it defines the component during a certain mixing. The solution composition usually frequently defined in terms of mass percentage.
It represents the amount of solute contained in a constant amount of solution. The quantity of solutes can be stated in terms of mass or moles.
Mass percent of fat= (10.1/ 53.7)×100=18%
Mass percent of carbohydrate = (30.3/ 53.7)×100=56.4%
Mass percent of protein= (13.3 / 53.7)×100=24.71%
Therefore, the percent fat, carbohydrates and protein for this sandwich are 18%, 56.4% and 24.71% respectively.
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How many milligrams of sodium sulfide are needed to completely react with 4.80 mL of a 0.0900 M aqueous solution of cadmium nitrate, to form a precipitate of CdS(s)
According to molar concentration, 0.055 ×10[tex]^-3[/tex] mg of sodium sulfide are needed to completely react with 4.80 mL of a 0.0900 M aqueous solution of cadmium nitrate, to form a precipitate of CdS.
What is molar concentration?Molar concentration is defined as a measure by which concentration of chemical substances present in a solution are determined. It is defined in particular reference to solute concentration in a solution . Most commonly used unit for molar concentration is moles/liter.
The molar concentration depends on change in volume of the solution which is mainly due to thermal expansion. Molar concentration is calculated by the formula, molar concentration=mass/ molar mass ×1/volume of solution in liters.
mass of sodium sulfide is calculated as, 0.09×236.42×0.0048=0.102 g.Now, according to stoichiometry where 78.04 g Na₂S gives 144.46 g CdS ,for 0.102 g sodium sulfide 78.04×0.102/144.46=0.055 g or 0.055×10[tex]^-3[/tex] mg.
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Two solutions of different concentrations of acid are mixed creating 40 ml of a solution that is 32% acid. One-quarter of the solution is made up of a 20% acid solution. The remaining three-quarters is made up of a solution of unknown concentration, c.
The unknown concentration, c, of the acid in the remaining three-quarters of the solution is 36%.
Let x be the volume of the unknown concentration of the solution.
Then, the volume of the 20% acid solution is (40/4) = 10 ml.
We know that the total volume of the resulting solution is 40 ml, and the resulting solution is 32% acid.
This means the amount of acid in the solution is:
0.32 * 40 ml = 12.8 ml
Since we mixed 20% and c% solutions, we can set up an equation:
0.2 * 10 ml + c * x = 12.8 ml
Solving for c, we get:
c = (12.8 - 2)/x = 10.8/x
Since the volume of the unknown solution, x, is three-quarters of the total volume of the solution (40 ml),
x = 30 ml
Substituting x, we can solve for c:
c = 10.8/30 = 0.36
Therefore, the concentration of the acid in the remaining three-quarters of the solution is 36%.
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Only few substances can be used as natural indicators. Why?
Answer:
Only few substances can be used as natural indicators because, some natural indicators do not have chemical properties which can change the color of substances.
Explanation:
Natural indicators are obtained from natural sources such as plants. Some of the common examples of natural indicators include red cabbage, turnip skin, cherries, beetroots and more. The natural indicators will help individuals distinguish if it is a base or an acid.
What are the differences between an endothermic and exothermic reaction?
Answer:
Exothermic-Producing heat
Endothermic-absorbing heat
Answer:
An endothermic reaction is a chemical reaction that absorbs heat energy, causing the temperature of the system to decrease. An exothermic reaction is a chemical reaction that releases heat energy, causing the temperature of the system to increase.
Explanation:
A team of students develop a model to describe why structural changes to genes affect proteins. The team provides two groups of students with the same materials, but one group must make a bridge while the other group makes a building. Analyze the team's model and explain why it incorrectly models the impact of gene mutations on proteins.
The team provides two groups of students with the same materials, but one group must make a bridge while the other group makes a building. The bridge model is correct.
What is gene ?A gene is the fundamental and structural unit of the hereditary that codes for specific information and proteins required for signaling and cell function.
A mutation or change in the sequence of the region will result in the modification of the proteins coded, resulting in a change in the genotype and phenotype.
If a gene is mutated and the proteins change, the entire sequence and the information for which it codes will change in the building model.
Thus, gene mutation will impact the proteins.
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Hospital patients are administered oxygen from an pressurized hyperbaric oxygen chamber at 3.0 atm. 600.0 L of oxygen is compressed in a cylinder at 160.0 atm. What volume of oxygen can a cylinder supply at the given pressure?
a. 32 × 103 L
b. 32 L
c. 11 L
d. 11 × 103 L
The volume of the oxygen cylinder at a pressure of 3.0 atm is 11.25 L. The closest answer choice to this value is option C. 11 L.
How did we get the value?We can use the ideal gas law, PV = nRT, to solve this problem. Here, P is the pressure, V is the volume, n is the number of moles of gas, R is the ideal gas constant, and T is the temperature (assumed to be constant). Rearranging the equation, we get:
V = nRT/P
The number of moles of gas, n, can be found using the ideal gas law:
n = PV/RT
Substituting this expression for n into the equation for V and rearranging, we get:
V = PV/P = 600.0 L
So, at a pressure of 160.0 atm, the volume of the oxygen cylinder is 600.0 L. To find the volume of the oxygen cylinder at a pressure of 3.0 atm, we need to use the relationship between pressure and volume for a gas:
V1/V2 = P2/P1
Rearranging, we get:
V2 = V1 * (P2/P1) = 600.0 L * (3.0 atm / 160.0 atm) = 11.25 L
So, the volume of the oxygen cylinder at a pressure of 3.0 atm is 11.25 L. The closest answer choice to this value is (c) 11 L.
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Predict the missing component in the nuclear equation.
Since what we have is an alpha decay, the missing component is 234/90 Th
What is Alpha decay?Alpha decay is a type of radioactive decay in which an atomic nucleus emits an alpha particle, which is a helium nucleus consisting of two protons and two neutrons. During alpha decay, the atomic number of the parent nucleus decreases by two, and the mass number decreases by four.
Apha particles can be stopped by a thin layer of material such as paper or skin, and they do not penetrate very far into matter.
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How does the amount of energy coming from the energy source (low vs. high) affect the amount of electrical energy released.
If (A. more), (B. less) energy is put into the system, then (A. more), (B. less) energy will be released from the system.
The quantity of electrical energy released is a function of the quantity of energy coming from the energy source (low vs. high). The system will release (A) more (B) less energy depending on how much energy is introduced into it.
What is the use of electrical energy in the system?The rotor shaft of a generator is spun or rotated by the fluid's force on the blades. The generator then transforms the kinetic (mechanical) energy of the rotor into electrical energy.
Turbines come in a variety of forms, including steam, combustion (gas), hydroelectric, and wind turbines.
At the scale that a large utility would use them, solar and wind power are currently the least expensive sources of energy. They are much less expensive than coal and nuclear power plants and slightly less expensive than natural gas-fired power plants.
Therefore, Depending on how much energy is supplied into the system, it will either (A) release more (B) or less (C).
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What mass of HCl is contained in 45.0 mL of an aqueous HCl solution that has a density of 1.19g cm ^ - 3 and contains 37.21% HCl by mass?
Answer:
0.01999 g
Explanation:
To find the mass of HCl in 45.0 mL of the solution, we need to first find the volume of the solution and then convert that volume to mass.
First, we can convert 45.0 mL to liters by dividing by 1000:
45.0 mL ÷ 1000 = 0.045 L
Next, we can find the mass of the solution by multiplying the volume by the density:
0.045 L × 1.19 g/cm³ = 0.05365 g
Now that we have the mass of the solution, we can find the mass of HCl by multiplying the mass of the solution by the concentration of HCl expressed as a decimal:
0.05365 g × 0.3721 = 0.01999 g
So, there is approximately 0.01999 g of HCl in 45.0 mL of the solution.
Which substance can be classified as an Arrhenius acid
Answer:
HCl (Hydrochloric acid) can be classified as an Arrhenius acid.
Explanation:
An Arrhenius acid is a substance that donates hydrogen ions (H+) in an aqueous solution, resulting in an increase in the hydrogen ion concentration (pH). Examples of Arrhenius acids include hydrochloric acid (HCl), sulfuric acid (H2SO4), and nitric acid (HNO3).
Answer:
HCl (Hydrochloric acid)
Explanation:
Which group would most benefit from the claim?
O people who sell coffee with caffeine
• people who sell decaffeinated tea
• diners that serve only drinks without caffeine
O manufacturers of caffeine-free bottled fruit juice
The group that would most benefit from the claim is people who sell coffee with caffeine.
What was the claims assertion?Caffeine increases mental alertness, making it ideal for activities related to the workplace because it makes a person more attentive, aware of their surroundings, and better able to keep up with tasks.
Caffeine enhances motor coordination, which is the capacity to coordinate various body parts to produce complicated movements. Among those who are active, the capacity to enhance motor coordination may increase need for caffeine.
The organizations who would gain most from the claim are the dealers in caffeinated items, including; based on the link of caffeine with benefits that are desired by active people (working people who earn income).
Therefore, option A is correct.
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Given the following equation: 2N₂+502 → 2N₂O5
How many moles of N₂O5 are produced by reacting 10 moles of O₂?
We can form mole ratios by using a balanced chemical equation.
Solving the Question[tex]2N_2+5O_2\rightarrow 2N_2O_5[/tex]
2 moles of [tex]N_2O_5[/tex] can be formed with 5 moles of [tex]O_2[/tex]:[tex]\dfrac{n_{N_2O_5}}{2}=\dfrac{n_{O_2}}{5}[/tex]
We're given that we have 10 moles of [tex]O_2[/tex]:[tex]\dfrac{n_{N_2O_5}}{2}=\dfrac{10}{5}[/tex]
[tex]n_{N_2O_5}=4[/tex]
Answer4 moles of N2O4 are produced by reacting 10 moles of O2.
As per the balanced equation of the reaction, 5 moles of oxygen molecule gives 2 moles of the product N₂O₅ . Hence, 10 moles of oxygen will give 4 moles of nitrogen pentoxide.
What is mole ratio ?The balanced chemical equation of a reaction represents the perfect stoichiometry of the reactants and products. Hence, the number of atoms of each element in the reactant side must be equal to their number of atoms in the product side.
The stochiometric ratio of number of moles of one reactant to the other or the product is called its mole ratio.
From the given reaction, it is clear that 5 moles of oxygen molecules reacts with nitrogen gas to give 2 moles of dinitrogen pentoxide.
Hence, the number of moles of dinitrogen pentoxide produced by 10 moles of oxygen gas is calculated as follows:
(10× 2)/5 = 4
Therefore, the number of moles of the product formed from 10 moles of oxygen gas is 4 moles.
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How many moles are contained in 0.159 grams of aluminum sulfate, Al2(SO4)3?
0.159 grams of aluminum sulfate contains 0.000465 moles.
How to determine the number of moles of aluminum sulfate (Al2(SO4)3) in 0.159 gramsFirst we need to first calculate the molar mass of Al2(SO4)3.
Molar mass of Al2(SO4)3 = (2 x atomic mass of Al) + (3 x atomic mass of S) + (12 x atomic mass of O)
= (2 x 26.98 g/mol) + (3 x 32.06 g/mol) + (12 x 16.00 g/mol)
= 342.15 g/mol
Now, we can use the following formula to calculate the number of moles:
number of moles = mass / molar mass
Plugging in the values, we get:
number of moles = 0.159 g / 342.15 g/mol
number of moles = 0.000465 moles
Therefore, 0.159 grams of aluminum sulfate contains 0.000465 moles.
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calculate the mass of sodium chlorite that must be decomposed to form 6.5g of oxygen 2NaClO3(s) —> 2NaCl(s) +3O2(g)
Answer:
14.39 g of sodium chlorite must be decomposed to produce 6.5 g of oxygen gas
Explanation:
We can start by using the balanced chemical equation for the reaction:
2NaClO3(s) -> 2NaCl(s) + 3O2(g)
This equation tells us that for every 2 moles of sodium chlorite that are decomposed, 3 moles of oxygen gas are produced. To find the mass of sodium chlorite that must be decomposed to produce 6.5 g of oxygen, we need to know the molar mass of oxygen, which is 32 g/mol.
Since 6.5 g of oxygen is equal to 6.5 / 32 = 0.203 moles of oxygen, we can use the balanced chemical equation to determine the number of moles of sodium chlorite that must be decomposed:
0.203 moles of oxygen = (0.203 moles of oxygen) / (3 moles of oxygen / 2 moles of sodium chlorite) = 0.203 * (2 moles of sodium chlorite / 3 moles of oxygen) = 0.135 moles of sodium chlorite
Finally, we can use the molar mass of sodium chlorite, which is 106 g/mol, to find the mass of sodium chlorite that must be decomposed:
0.135 moles of sodium chlorite * 106 g/mol = 14.39 g of sodium chlorite
Compound A + Compound B —> Compound C + Compound D
———
Identify the reaction type
The type of reaction shown is a double displacement reaction.
Types of reactionThe given chemical equation represents a chemical reaction known as a double displacement or metathesis reaction.
In this type of reaction, the cations and anions of two different compounds switch places, resulting in the formation of two new compounds.
In the given equation, Compound A and Compound B react to form Compound C and Compound D by exchanging their respective cations and anions.
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Which is NOT a limiting factor when it comes to applying motivation to employees in the hospitality industry?
A limiting factor when it comes to applying motivation to employees in the hospitality industry is Payment structure.
What is the structure?The structure of a essay is straightforward and simple.It typically consists of an introduction, two to three body paragraphs and a conclusion. The introduction should introduce the main topic and provide a brief overview of what will be discussed. The body paragraphs should provide more specific details about the main topic and should include supporting evidence. The conclusion should summarize the essay and provide a final thought or opinion. It is important to keep in mind that the essay should be free of plagiarism, so it is essential to write all content in one’s own words.
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Determine an unknown concentration or volume using an acid–base titration.
Calculate the volume of 2.63×10-2 M barium hydroxide required to neutralize 16.1 mL of a 0.110 M nitric acid solution.
? mL
The volume of 2.63×10-² M barium hydroxide required to neutralize 16.1 mL of a 0.110 M nitric acid solution is 67.34mL.
How to calculate volume?The volume of a substance can be calculated using the following expression:
CaVa = CbVb
Where;
Ca = concentration of acidCb = concentration of baseVa = volume of acidVb = volume of baseAccording to this question, 2.63×10-² M barium hydroxide is required to neutralize 16.1 mL of a 0.110 M nitric acid solution.
0.0263 × Va = 16.1 × 0.110
0.0263Va = 1.771
Va = 67.34mL
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LAPTOP CART 3
COMPUTER 15
Match the group with it's correct group name.
Group Name
1. alkaline earth metals
2. halogens
3. transiton metals
4. carbon family
5. noble gases
6. alkali metal
7. boron family
8. nitrogen family
9. oxygen family
Periodic Table Quiz
Group
a 1 or IA
-configuration
b. 2 or 2A
c. 3 or 3A
d.
14 or 4A
15 or SA
f. 16 or 6A
17 or 7A
b. 18 or SA
3B to 2B
Answer the following questions.
10. How many valence electrons do the halogens have in their valence shell?
11.How many valence electrons do the alkali metals have in their valence shell?
12. The maximum of valence electrons is?
13. The principle that the properties of the elements are arranged in increasing order of
their atomic numbers is called the
14. The group of eight electrons filling the s and p orbitals of the higher-most energy
level of an atom is called
15. Give the noble gas for Al
16. Give the configuration for Ca
17. Give the configuration for Ca ion
18. Give the configuration for the elements that are isoelectronic with Neon (Ne) when
they form a l' ion element name
e-configuration
e-configuration
19.
1-ion element name
20. Which group of elements is the least reactive?
fout act
l
wwww yo
WHEAT AND
Group 1 (Alkali Metals)
Group 2 (Alkaline Earth Metals)
Group I: Lithium and sodium make up the elements.
Chlorine and bromine are the elements in Group I7.
Neon and argon are the elements in Group I8.
What are halogens?
The only periodic table group with elements in all three of the primary states of matter at standard pressure and temperature—though not much above room temperature—is the group of halogens. In groups 1 and 15, the same holds true if white phosphorus is assumed to be the standard state.
All of the halogens react with hydrogen to create acids.
Minerals or salts are often used to manufacture the majority of halogens.
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