The coefficients in front of the chemical formulas indicate the relative amounts of the reactants and products, and the subscripts within the chemical formulas indicate the ratios of atoms of each element present.
A chemical equation is a statement using chemical formulas to describe the identities and relative amounts of the reactants and products involved in a reaction. A chemical equation typically consists of the chemical formulas of the reactants (the substances being reacted), separated by an arrow, followed by the chemical formulas of the products (the substances produced by the reaction).
For example, the balanced chemical equation for the reaction between hydrogen gas (H2) and oxygen gas (O2) to form water (H2O) is:
2H2 + O2 → 2H2O
This equation indicates that two molecules of hydrogen react with one molecule of oxygen to form two molecules of water. The coefficients in front of the chemical formulas indicate the relative amounts of the reactants and products, and the subscripts within the chemical formulas indicate the ratios of atoms of each element present.
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A student finds a piece of metal and wants to determine the
specific heat. The mass of the metal is 4.70g. After the
metal absorbed 57.2J of heat, the temperature of the sample
rises 32°C. What is the specific heat?
The metal has a specific heat of 0.390 J/g°C.
What is Specific Heat ?
Specific heat is an important concept in thermodynamics and is used to determine the amount of heat required to raise the temperature of a material, or conversely, the amount of heat that is released when a material cools. Different materials have different specific heats, which means that they require different amounts of heat to change their temperature. For example, water has a very high specific heat, which means that it takes a lot of heat energy to raise its temperature, while metals have much lower specific heats and require much less heat energy to change their temperature.
We can use the formula for the heat absorbed or released by a material:
Q = m * c * ΔT
where Q is the heat absorbed or released, m is the mass of the material, c is the specific heat, and ΔT is the change in temperature.
In this case, the metal absorbs 57.2 J of heat, and the temperature of the sample rises 32°C. The mass of the metal is 4.70 g. When these values are added to the formula, we obtain:
57.2 J = 4.70 g * c * 32°C
Solving for c, we get:
c = 57.2 J / (4.70 g * 32°C)
= 0.390 J/g°C
Therefore, the specific heat of the metal is 0.390 J/g°C.
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Matter is anything that has mass and………
O energy
O volume
O gravity
O plasma
how much heat (in cal) is required to boil 142 g of ammonia, nh3? the heat vaporization of ammonia is 327cal/g
It would require 46434 calories of heat to boil 142 g of ammonia.
When a liquid changes form into a gas, the process is called vaporization. You can watch vaporization when you boil a pot of water. Vaporization happens in two ways: evaporation and boiling. Evaporation occurs when sunlight shines on water until it changes to vapor and rises into the air
To calculate the amount of heat required to boil 142 g of ammonia, NH3, we can use the formula:
Heat = mass x heat of vaporization
where the mass is 142 g and the heat of vaporization is 327 cal/g.
Therefore, the heat required to boil 142 g of ammonia is:
Heat = 142 g x 327 cal/g
Heat = 46434 cal
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a solution is prepared with 3.85 grams of a non ionic unkwon compound in 100.0g cyclohexane. the solution had a freezing point of 4.18c. what is the molar mass
3.85 grammes of a non-ionic unidentified substance are dissolved in 100.0 grammes of cyclohexane to create a solution. The solution's freezing point was 4.18 c. The molar mass is 186.
Kf of cyclohexane = 20.2 C0/m
ΔTf =i* kf * m
i= 1 for non-electrolyte
4.18 = 1*20.2*m
m = 4.18/20.2 = 0.207m
molality = W*1000/G.M.Wt* weight of solvent
0.207 = 3.85*1000/G.M.Wt*100
G.M.Wt = 3.85*1000/0.207*100 = 186g/mole
the molar mass of the unknown compound is 186
A substance's molar mass is its mass in grammes per mole of the chemical. A mole is 6.022 1023 molecules of any given chemical. A mole is a unit used to quantitatively quantify the size of the tiniest entities, much like how we use a standard number to compute many things, such as how a dozen equals twelve objects.
Everybody is interested in learning how many molecules are there in a given substance. In terms of size and mass, molecules and atoms are incredibly small. The weight of one sample mole is known as the molar mass. The molar mass is determined by adding the atomic masses (atomic weights) of each atom in the molecule.
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The volume of air that can be exhaled after normal exhalation is the:_________
The volume of air that can be exhaled after normal exhalation is called the residual volume.
The residual volume is the amount of air that remains in the lungs after a person has exhaled as much air as they can. This volume is estimated to be about 1.0 to 1.5 liters in healthy individuals. It is important for maintaining adequate lung function and preventing lung collapse. The residual volume serves as a "reserve" of air that can be used for activities such as exercise, speaking, and deep breathing. The lungs are made up of several different parts, including the alveoli, bronchioles, and airways. During normal breathing, air flows in and out of the lungs through the airways and into the alveoli, where oxygen is exchanged with carbon dioxide. However, after a person has exhaled as much air as they can, there is still some air remaining in the lungs. This remaining air is referred to as the residual volume. The residual volume is estimated to be about 1.0 to 1.5 liters in healthy individuals.The residual volume serves several important functions. Firstly, it helps to maintain the shape and structure of the lungs. Without a residual volume, the lungs would collapse, which could lead to airway blockages and reduced lung function.
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QuestionThe product formed in Aldol condensation is:Aan alpha, beta unsaturated esterBa beta-hydroxy acidCA beta-hydroxy aldehyde or a beta-hydroxy ketoneDan alpha-hydroxy aldehyde or ketoneMedium
Aldol condensation produces a beta-hydroxy aldehyde or a beta-hydroxy ketone (C). Aldol condensation is a process that occurs when two carbonyl compounds combine with each other in the presence of a base.
resulting in the creation of a -hydroxy aldehyde or ketone. An enolate ion (from one carbonyl molecule) is added to the carbonyl group of another carbonyl chemical in the process. Depending on the type of the carbonyl molecules utilized in the process, Aldol condensation produces a beta-hydroxy aldehyde or a beta-hydroxy ketone (C). Aldol condensation is a process that occurs when two carbonyl compounds combine with each other in the presence of a base. the result of the Aldol condensation reaction is either a -hydroxy aldehyde or a -hydroxy ketone.
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What is the difference between adhesion and cohesion properties?
Cohesion is the force that holds the same substance together, while adhesion is the force that holds different substances together.
Cohesion refers to the force of attraction between the same type of molecules within a substance. It is the bond between molecules of the same substance, such as the hydrogen bonds between water molecules. This property determines the internal strength of a substance and is responsible for the ability of a liquid to maintain its shape and not flow easily. For example, water is said to have high cohesion because its molecules are strongly attracted to each other, giving it its characteristic cohesive behavior.
Adhesion, on the other hand, refers to the force of attraction between two different substances. It is the bond between molecules of different substances, such as the attraction between water and a glass surface. This property determines the ability of a substance to stick to other substances, such as when a droplet of water adheres to a window. For example, gecko lizards can climb smooth surfaces because of the strong adhesion between their feet and the surface.
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What is Pb+Cuso4 balanced
Answer:
Explanation:
The balanced equation for the reaction between lead (Pb) and copper (II) sulfate (CuSO4) is:
Pb + CuSO4 -> PbSO4 + Cu
In this equation, one mole of lead reacts with one mole of copper (II) sulfate to produce one mole of lead sulfate and one mole of copper. This equation represents a redox reaction, where lead acts as the reducing agent and copper (II) sulfate acts as the oxidizing agent. The transfer of electrons from lead to copper (II) sulfate results in the formation of lead sulfate and copper.
which set of three quantum numbers does not specify an orbital in the hydrogen atom?
any set of quantum numbers that violate the rules for the allowed values of n, l, and m_l will not specify a valid orbital in the hydrogen atom.
The trio of quantum numbers n = 3, l = 3, and m l = -2 do not identify an orbital in the hydrogen atom.
This is because l = 3 is an invalid quantum number for n = 3, as the value of l cannot be bigger than n-1. When n = 3, the permitted values of l are 0, 1, and 2. As m l has a value between -l and +l, the quantum number m l = -2 is acceptable for l = 2 but not for l = 3.
In summary, any set of quantum numbers that violate the rules for the allowed values of n, l, and m_l will not specify a valid orbital in the hydrogen atom.
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of these, which solution could be in the beaker that contains the isotonic solution? 0.05% (m/v) nacl solution 0.92% (m/v) nacl solution 4% (m/v) nacl solution
In this case, the solution with 0.92% (m/v) NaCl is most likely to be isotonic, as it has a concentration of solutes that is closest to the concentration inside the cell, 2nd option.
What is an isotonic solution?An isotonic solution has the same concentration of solutes as the cell, meaning that the concentration of solutes inside and outside the cell are equal.
This means that when a cell is placed in an isotonic solution, there is no net movement of water into or out of the cell, so the cell retains its normal shape and size. This solution will cause neither an increase nor decrease in the size of the cell.
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the equilibrium fraction of lattice sites that are vacant in silver (ag) at 700c is 2 x 10-6. calculate the number of vacancies (per meter cubed) at 700c. assume a density of 10.35 g/cm3 for ag.
the number of vacancies per cubic meter of silver at 700°C is approximately 5.16 x [tex]10^{19}[/tex]
The number of vacancies per cubic meter can be calculated using the equation:
n_v = N exp(-Q_v / kT) * C_v
where:
n_v = number of vacancies per cubic meter
N = Avogadro's number = 6.022 x [tex]10^{-23}[/tex]atoms/mole
Q_v = vacancy formation energy = 0.92 eV/atom for silver
k = Boltzmann's constant = 8.617 x [tex]10^{-5}[/tex] eV/K
T = temperature in Kelvin = 700 + 273 = 973 K
C_v = equilibrium fraction of lattice sites that are vacant = 2 x 10^-6
density of Ag = 10.35 g/cm = 10,350 kg/m (1 g/cm = 1000 kg/m)
Plugging in the values:
n_v = 6.022 x [tex]10^{-23}[/tex] ×(-0.92 / (8.617 x [tex]10^{-5}[/tex] × 973)) × (2 x[tex]10^{-6}[/tex]) × 10,350
n_v = 5.16 x [tex]10^{19}[/tex] vacancies/m
Therefore, the number of vacancies per cubic meter of silver at 700°C is approximately 5.16 x [tex]10^{19}[/tex]
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When a 0.680 g
sample of olive oil is burned in a calorimeter, the heat released increases the temperature of 370 g
of water from 22.7 ∘C
to 39.0 ∘C
. What is the energy value of the olive oil in kcal/g
?
Express your answer using two significant figures.
45.3 Kj is the correct answer
What is energy ?
Energy is a property of matter and radiation that is the ability to do work. It can take many forms, including thermal energy, light energy, mechanical energy, electrical energy, and chemical energy. Energy can be transformed from one form to another but cannot be created or destroyed, according to the law of conservation of energy. Energy is essential for many processes and activities in the natural world, such as photosynthesis in plants, movement of ocean currents, and generation of electricity in power plants. In physics, energy is often described as a scalar quantity and is typically measured in units of joules (J) or electron volts (eV).
q = mCdT = (370g)(4.184J/g/deg)(16.4deg) = 25389J = 25.389 kJ. Since you have 0.560 g of oil, the energy per gram is 25.389 kJ/0.560g = 45.34 kJ/g = 45.3 kJ/g (to 3 sig figs)
1 cal = 4.184 j so hopefully you can convert to calories and kcal etc.
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oil is less dense than water b. oil is immiscible (does not dissolve) in water c. oil is both less dense and immiscible with water d. water is heavier than oi
The statement that correctly describes the relationship between oil and water is: "Oil is both less dense and immiscible with water."
Oil is less dense than water, which means that it will float on top of water when the two are combined in a container. Additionally, oil and water are immiscible, which means that they do not mix together to form a homogenous solution. Instead, the oil will form droplets or a separate layer on top of the water.
Water is actually heavier than oil, which is why the less dense oil floats on top of it. This property of oil and water has important implications in various industries, such as in the separation of oil from water during oil spills or in the purification of water.
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what is/are the diagnostic signal(s) in the ir spectrum of the indanol product that suggests that the desired product is being formed? is it possible to tell whether any unreacted starting material is present?
The presence of a hydroxyl group (OH) stretching at around 3300–3500 cm-1 and a carbonyl group (C=O) stretching at about 1700–1750 cm-1 are two diagnostic signal indications in the IR spectrum of the indanol product that point to the formation of the intended product.
Diagnostic signals are distinct traits that can be utilised to determine if a molecule, functional group, or physical attribute is present or absent in a spectrum or analysis. Diagnostic signals are signals that are specific to a certain chemical structure or bond, allowing for the identification of the compound or the presence of specific functional groups, in the context of spectroscopy. These signals can be utilised to locate and measure the target molecule or functional group because they are frequently connected to certain peaks, wavelengths, or frequencies. Chemical analysis frequently relies on diagnostic signals because they make it possible to precisely and accurately identify certain substances or functional groups in intricate combinations.
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What would be the theoretical yield of CO2 in grams if there is 6.4 amount of moles present?
Theoretical yield is the maximum amount of product that can be obtained from a given amount of reactant, assuming complete conversion of the reactant.
What do you mean by reactants?
Reactants are the substances that are involved in a chemical reaction. Reactants are typically made up of two or more elements or compounds that are combined to create a new substance, the product. Reactants are consumed in a reaction, and the product is what is left over after the reaction has taken place.
The theoretical yield of CO2 in grams is calculated using the following equation:
Mass (g) = Moles (mol) x Molar Mass (g/mol)
Mass (g) = 6.4 mol x 44.01 g/mol
Mass (g) = 281.264 g
Hence, the theoretical yield of CO2 in grams would be 281.264 g.
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of the following, which gives the correct order for atomic radius for mg, na, p, si and ar?
The proper order is Na > Mg > Si > P > Ar. As a result of the valence electrons' low nucleostatic attraction, sodium (Na) has the biggest atomic radius.
The electrons' orbitals get bigger and bigger as we go from top to bottom, increasing the atomic size.S and Ar are hence real. S is the largest element on the periodic table since it is on the left. Na has the most atoms of any of the other elements mentioned. Due to its position to the right of silicon, phosphorus will have a lower atomic radius for an uncharged atom than silicon. Due to its position to the right of silicon, phosphorus will have a lower atomic radius for an uncharged atom than silicon. The atomic radius grows in a group from top to bottom and decreases across a period, as seen in the figures below. The smallest element is therefore helium, whereas the largest is francium.
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When solid ammonium chloride is added to water, all of the solid dissolves and the solution becomes cold.
a. True
b. False
True. When solid ammonium chloride is put to water, it dissolves quickly and undergoes an endothermic reaction, meaning that heat from the environment is absorbed, cooling the solution.
A salt with no flavour or scent, ammonium chloride has a number of uses. It is frequently used in fertilisers, as an animal feed addition, and in several medical procedures. Ammonium chloride, often known as NH4Cl, is a chemical compound made up of ammonium ions (NH4+) and chloride ions (Cl-). Water rapidly dissolves ammonium chloride when it is introduced, releasing ammonium and chloride ions into the solution. Because of the endothermic nature of this process, the solution cools down as a result of heat being absorbed from the surroundings. This quality is frequently applied in cooling applications, such as cold packs.
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how many moles of barium are in a 25.0 g sample of barium? your answer should have three significant figures.
1 mole is equal to 6.023 × 10 ²³ molecules. 0.182 moles of barium are in a 25.0 g sample of barium.
What do you mean by mole ?The term mole is defined as the amount of substance of a system which contains as many elementary entities.
One mole of any substance is equal to 6.023 × 10²³ units of that substance such as atoms, molecules, or ions. The number 6.023 × 10²³ is called as Avogadro's number or Avogadro's constant.
The mole concept can be used to convert between mass and number of particles.
I mole of any molecule = 6.023 × 10 ²³
1 mole of barium = 137.328g
To calculate moles, divide mass by molar mass yields number of moles.
25.0g barium × 1mol barium 137.328g barium
= 0.182mol barium
Thus, 0.182 moles of barium are in a 25.0 g sample of barium.
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How many atoms of manganese
are in 250.0 g of braunite,
Mn3SiO6? The molar mass of
braunite is 288.91 g/mol.
? ] × 10[?]
x
atoms Mn
Answer:
1.56x10^23 atoms of Mn
Explanation:
250 grams of braunite (Mn3SiO6) is:
(250 g)/(288.91 g/mole) = 0.865 moles of Mn3SiO6
One mole of Mn3SiO6 would contain 3 moles of Mn, since it appears 3 times in the compound. Breaking apart 1 mole of Mn3SiO6 into individual atoms of each element would procude 3 moles of Mn atoms (and 1 mole of Si and 6 moles of O atoms),
Since we have 0.865 moles of Mn3SiO6,
we should have:
(0.865 moles of Mn3SiO6)*((3 moles of Mn)/(1 mole Mn3SiO6))
this is equal to 2.596 moles of Mn atoms
Since 1 mole is 6.02x10^23 particles of anything, we can write:
(2.596 moles of Mn)*(6.02x10^23 particles Mn atoms/mole) =
1.56x10^23 atoms of Mn
elements that are most similar in their properties are found _____
Elements that are most similar in their properties are found in the same period of the periodic table. The number of electron shells is the same for elements in the same period of the periodic table.
As a result, they have similar electron configurations and thus similar chemical and physical properties. Elements are arranged in columns termed "groups" according to their chemical similarities (or families). When two different elements share the same number of valence electrons, their chemical characteristics are likely to be comparable. The same column of the Periodic Table contains elements that have the same number of valence electrons. Elements having the same valence shell are found in the same row of the periodic table.
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the strength of peptidoglycan resides in group of answer choices sugar polymers. peptide linkages. d-amino acids. both a and b all of the above
The strength of peptidoglycan resides in both sugar polymers and peptide linkages, so the correct answer is "both a and b."
Peptidoglycan is a polymer that makes up the cell wall of most bacteria. It consists of long chains of sugar molecules (N-acetylglucosamine and N-acetylmuramic acid) linked together by peptide chains composed of both L- and D-amino acids. These peptide chains provide strength and rigidity to the peptidoglycan, while the sugar polymers give it a flexible and porous structure.
The peptide linkages are particularly important for the strength of the peptidoglycan because they form cross-links between adjacent sugar chains, creating a mesh-like network that provides the cell wall with its strength and shape. The D-amino acids are also crucial for the stability of the peptide chains, as they make the cell wall resistant to degradation by bacterial enzymes that would otherwise break down the peptide bonds.
In summary, both the sugar polymers and peptide linkages are important for the strength of peptidoglycan, making "both a and b" the correct answer.
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in any organic redox reaction, you can recognize the reduced and oxidized organic molecules by tracking the charges between products and reactants. reduction corresponds to an increased charge . oxidation corresponds to
Reduction corresponds to an increased charge, while oxidation corresponds to a decreased charge.
Reduction involves a decrease in oxidation number and an increase in charge. On the contrary, oxidation of a compound or an element in a reaction involves increase in oxidation number and a decrease in overall charge.
Reduction is a process in which hydrogen ions are added to the reactant, while oxidation experiences a loss of hydrogen ions. Another aspect of redox reactions involves addition of electrons in reduction, while loss of electrons in oxidation. Redox reactions are the chemical reactions in which there is a chemical change in the substrate or the reactants. Where reduction stores energy, oxidation releases it.
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what are the oxidation states of s in sulfate and sulfide? b. write the balanced half-reaction for the reduction of sulfate to sulfide. (since this is a half- reaction, electrons will appear in the final reaction.)
From the given information, the oxidation state of sulfur in sulfate (SO₄²⁻) is +6, while in sulfide (S²⁻) it is -2.
The oxidation state of an atom can be determined by a set of rules, which assigns electrons to the more electronegative atom in a bond, or to the atom with a higher formal charge.
The balanced half-reaction for the reduction of sulfate to sulfide can be written as follows:
SO₄²⁻+ 8H+ + 8e- → H₂S + 4H₂O
In this half-reaction, sulfate is being reduced to sulfide by gaining 8 electrons and 8 hydrogen ions (H⁺) on the left-hand side of the equation. The right-hand side of the equation shows the products of the reaction, which are hydrogen sulfide (H₂S) and water (H₂O).
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Propane burns completely in oxygen according to the equation shown.
C3H8 (g)+50₂ (g)=3CO₂ (g)+4H₂O(g)
If 0.1 mole of propane gas is burnt completely. What colume of gaseous product is obtained,
measured at room temperature and pressure?
Answer:
17.1L
Explanation:
use ideal gas law
PV=nRT
101.325x = 0.7 x 8.314 x 298.15
^
Solve for x
X = 17.12424525 ~~ 17.1L
Answer:
17.11 L
Explanation:
The molar volume of a gas at room temperature (25°C) and pressure (1 atm) is 24.45 L/mol.
0.1 mole of propane reacts with oxygen to form 0.1 x 3 = 0.3 mole of carbon dioxide and 0.1 x 4 = 0.4 mole of water vapor.
The total volume of the gaseous products is 0.3 + 0.4 = 0.7 mole of gas.
Therefore, the volume of gaseous products obtained from the complete combustion of 0.1 mole of propane is 0.7 x 24.45 L/mol = 17.11 L.
for a reaction that starts with 2.2 moles of no 2 gas in a 0.40 l container, what is the concentration of n 2o 4 in the container after one half-life of the reaction? give your answer in units of mol/l with two significant figures
Rounding to two significant figures, the concentration of N2O4 in the container after one half-life of the reaction is 1.4 mol/L.
The balanced equation shows that 2 moles of NO2 react to form 1 mole of N2O4. Therefore, the number of moles of N2O4 that are formed during the reaction will be half of the number of moles of NO2 that react.
After one half-life of the reaction, half of the NO2 will have reacted. Therefore, the number of moles of NO2 remaining in the container will be: 2.2 mol / 2 = 1.1 mol
Since 2 moles of NO2 react to form 1 mole of N2O4, the number of moles of N2O4 that are formed will also be half of the number of moles of NO2 that reacted, which is 1.1/2 = 0.55 mol.
The volume of the container is 0.40 L, so the concentration of N2O4 in the container will be:
C(N2O4) = moles of N2O4 / volume of container
= 0.55 mol / 0.40 L
= 1.4 mol/L
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What is the mole ratio for hydrochloric acid and chlorine?
2MnO2 + 4HCl → 2MnCl2 + 2H2O + 2Cl2
Answer:
4:2 (2:1 simplified)
Explanation:
Check the coefficients!
Scientists plan to use selective breeding to produce a new type of wheat for farmers who live in northern areas with short summer seasons. Which of these traits would be MOST useful for these farmers?
C. Fast growth rate would be the most useful trait for these farmers.
Selective breeding is used to produce a crop with desired characteristics, such as a fast growth rate. A fast growth rate is beneficial to farmers in northern areas with short summer seasons because it allows the wheat to mature quickly and be harvested in a shorter amount of time, thus providing a larger yield despite the shorter growing season.Selective breeding is a process of selecting chemical compounds with specific desired properties and breeding them together to create a new compound with the desired traits. This is done by rearranging the chemical bonds between the two compounds and creating a new molecule with the desired characteristics. This process is known as chemical hybridization.
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complete question:Scientists plan to use selective breeding to produce a new type of wheat for farmers who live in northern areas with short summer seasons. Which of these traits would be MOST useful for these farmers?
a.large seed size
b.long stem length
c.fast growth rate
d.shallow root systems
What is the temperature of calcium chloride, baking soda, and water usually at?
The temperature of calcium chloride, baking soda, and water will depend on the specific application and the environment.
What do you mean by temperature?
Temperature is a measurement of how hot or cold something is. Temperature is expressed in degrees Celsius (°C) or Fahrenheit (°F). The temperature of an object, a room, or the air around us can all be referred to as temperature.
The temperature of calcium chloride, baking soda, and water will depend on the specific application and the environment in which it is used. For example, if calcium chloride is used as a de-icing agent, it will be affected by the outside temperature and humidity. If baking soda is used as a leavening agent in baking, it will be affected by the ambient temperature of the kitchen. Finally, if water is being heated on a stove, the temperature will depend on the heat source and the amount of time it is heated. The temperature of all three will fluctuate depending on the application and environment, making it impossible to provide a definitive answer.
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Carbon tetrachloride is a solvent which is used as a refrigerant and also as a cleaning agent. Today, methane and chlorine are mainly used to produce carbon tetrachloride:
CH4+4012-> CC14+4H1
How many grams of carbon tetrachloride can be produced from reacting 190.1 grams of chlorine with excess methane?
The amount of carbon tetrachloride that can be produced from reacting 190.1 grams of chlorine with excess methane is 159.8 grams.
What do you mean by chlorine?
Chlorine is basically a chemical element with symbol Cl and atomic number 17. It is a halogen, which means it is a highly reactive nonmetal. Chlorine is a yellow-green gas at room temperature and is highly soluble in water. It is most commonly used as a disinfectant and water purifier, but it has many other uses, including production of plastics, bleach, and synthetic fibers.
This is calculated using the equation:
mass of carbon tetrachloride = (mass of chlorine / molar mass of chlorine) x molar mass of carbon tetrachloride
= (190.1 / 70.906) x 153.82
= 159.8 grams
Hence, 159.8 grams of carbon tetrachloride can be produced from the reaction.
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What is the normality of:
2.5 M gallium(III) hydroxide
6.0 M barium hydroxide
4.5 M sulfuric acid
0.54 M iron(II) hydroxide
Answer:
The term "normality" refers to the number of moles of a solute present in one liter of a solution, expressed as equivalents per liter (Eq/L). To calculate the normality of a solution, you need to know the molarity (moles of solute per liter of solution) and the equivalent weight of the solute. The equivalent weight of a solute is the atomic weight or molecular weight of the solute divided by the number of ions or molecules that can be formed from one molecule of the solute.
2.5 M gallium(III) hydroxide: Gallium(III) hydroxide is a basic compound and forms Ga(OH)3. One mole of Ga(OH)3 will yield three moles of hydroxide ions, so the equivalent weight of Ga(OH)3 is 1/3 of its molecular weight. Therefore, the normality of 2.5 M gallium(III) hydroxide solution is 2.5 x 3 = 7.5 N.
6.0 M barium hydroxide: Barium hydroxide is a basic compound and forms Ba(OH)2. One mole of Ba(OH)2 will yield two moles of hydroxide ions, so the equivalent weight of Ba(OH)2 is 1/2 of its molecular weight. Therefore, the normality of 6.0 M barium hydroxide solution is 6.0 x 2 = 12 N.
4.5 M sulfuric acid: Sulfuric acid is an acidic compound and forms H2SO4. One mole of H2SO4 will yield two moles of hydrogen ions, so the equivalent weight of H2SO4 is 1/2 of its molecular weight. Therefore, the normality of 4.5 M sulfuric acid solution is 4.5 x 2 = 9 N.
0.54 M iron(II) hydroxide: Iron(II) hydroxide is a basic compound and forms Fe(OH)2. One mole of Fe(OH)2 will yield two moles of hydroxide ions, so the equivalent weight of Fe(OH)2 is 1/2 of its molecular weight. Therefore, the normality of 0.54 M iron(II) hydroxide solution is 0.54 x 2 = 1.08 N.
