You take in that you need to make a decision. Try to notice and define the nature of the decision you must make. This first step is very important.
What are the first characteristics of decision-making?Decision-making requires the identification and selection of alternatives on the basis of values, linking, requirements, and beliefs. To begin the procedure objectives must be defined, classified, and ordered in the order of their importance. Decision-making involves the recognition and selection of alternatives on the basis of values, preferences, concerns, and beliefs. Decision-making means selecting a course of action from two or more alternative strategic decision-making (SOM) is of great and growing importance.
So we can conclude that attribute of Decision Making · It is a process of selecting a course of action from among the alternative courses of action.
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Determine the number of valence electrons and what the atoms charge will be when it forms an ion
a. O
Answer:
You determine the valence electrons by using the Periodic Table.
Let's assume you're using a table that has the groups numbered 1-18.
The electron configurations of ions are those of the neutral atoms plus or minus a number of electrons equal to the charge on the ion.
Draw a six‑carbon alkyne that can exist as diastereomers. You do not need to specify wedge or dashed bonds.
A six-carbon alkyne that can exist as diastereomers is 3-methyl-1-pentyne.
Alkynes are hydrocarbons which contain carbon-carbon triple bonds. Their general formula is CnH2n-2 for molecules with one triple bond (and no rings). the compound contains 6 Carbon atoms, its said to be an alkyne therefore compound should contain a triple bond.
There should be single C as chiral centre. This means that one carbon has 4 different groups attached to it. In the diagram shown has one carbon connected to
1- Hydrogen
2 - CH3 group
3 - C2H5 group
4 - C≡CH
All these groups are of different types, hence the C is a chiral centre .
therefore A six-carbon alkyne that can exist as diastereomers is 3-methyl-1-pentyne.
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at what temperature would the population of the first excited vibrational state of hcl be 1/e times its population of the ground state?
At 14.52 K, the population of the first energy level is 1/e times that of the ground state.
Temperature and the energy difference between the levels affect the relative population of particles in certain rotating levels. The excitation of particles from one level to another is caused by a rise in temperature.
HCl has a rotational constant (B) of 10.59 cm⁻¹
Identify the ground state's and the first rotational level's energies.
The formula is used to calculate the energy of a rotational level.
E = hcBJ (J + 1)
The rotating level's energy is represented by E (in J).H stands for the Planck constant.The symbol for the speed of light is c.The rotational constant is denoted by B.The level of rotational energy is denoted by J.Following is the calculation of the energy of the ground state (J = 0):
E = hcBJ (J + 1)
E = 6.626 * 10⁻³⁴ J s * 2.998 * 10¹⁰cm s⁻¹ * 10.59 cm⁻¹ * 1 (1 + 1)
E = 4.207 * 10⁻²² J
Using the provided formula, the population of rotational level J in comparison to the ground state is computed.
[tex]\frac{N_{j} }{N_{0} } = 2J + 1 [ \frac{-E_{j} }{_{e}k_{B}T }[/tex] --- (I)
The J-level population is known as [tex]N_{j}[/tex]
N is the ground state's population.
The Boltzmann constant is [tex]k_{B}[/tex]
The temperature is T.
The answer to the query is
N₁ = 1 / e (N₀)
N₁ / N₀ = 1 / e ⇒ (II)
Equate (I) and (II)
1 / e = [2 (1) + 1] [tex][ \frac{-E_{j} }{_{e}k_{B}T }][/tex]
1 / 2.718 = (3) (-4.207 * 10⁻²² J) / (1.381 * 10⁻²³ J K⁻¹ * T)
0.368 = 3 * (-4.207 * 10⁻²² J) / (1.381 * 10⁻²³ J K⁻¹ * T)
0.368 = 3 * e (-30.46 K / T)
Simplifying the above expression:
0.368 = 3 * e (-30.46 K / T)
In 0.368 = In 3 + (-30.46 K / T)
-0.999 = 1.098 - (30.46 K / T)
(-30.46 K / T) = 1.098 + 0.999
Solving for T:
(30.46 K / T) = 1.098 + 0.999
(30.46 K / T) = 2.097
T = 30.46 K / 2.097
Therefore, 14.52 K is the temperature where the first energy level's population is 1/e times that of the ground state.
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COMPLETE QUESTION:
At what temperature would the population of the first rotational level of HCl be 1/e times the population of the ground state? The rotational constant for HCl, B, is equal to 10.59 cm⁻¹
.
based on the wavelength that the cobalt(ii) chloride solution absorbed most strongly, what color light did the copper(ii) sulfate solution absorb most strongly?
Copper(II) sulfate is pale blue (cyan) because it absorbs light in the red region of the spectrum.
What is Spectrophotometry ?Spectrophotometry is the branch of electromagnetic spectroscopy that deals with the quantitative measurement of reflectance or transmission properties of materials as a function of wavelength.
A method of measuring how much light a chemical absorbs by measuring the intensity of light as it passes through a sample solution. The basic principle behind spectrophotometry is that each compound absorbs or transmits light in a specific wavelength range.
Copper(II) sulfate solution appears blue because it actually absorbs red region of spectrum which is a complementary color of blue.
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what would a rotational spectrum look like (how many peaks would be present and how far apart would they be)? you must show how you arrived at the spacing between peaks
The rotational spectroscopy looks like many peaks joined together in the shape of parabola. The number of peaks depends on the shape of the molecule. The peaks are 2B distance apart from each other.
What is rotational spectroscopy?
Rotational spectroscopy is an absorption spectroscopy where the energies of transitions between the energy levels of a molecule in the gas is measured. It is also called as microwave spectroscopy. Rotational spectroscopy only works on the molecules which have permanent dipole moment.
In rotational spectroscopy each line represents a transition between energy levels.
E = BJ (J+1)
where J = energy level, B = rotational constant.
When the transition is from J = 0 to J = 1,
E = E(f) - E(i) = B x 1 (1+1) - B x 0 (0+1) = 2B - 0B = 2B.
Therefore, the spacing between the peaks in Rotational spectroscopy is 2B. The number of peaks depends on the shape of the particular molecule.
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• Which has more potential energy; a bird sitting on the roof of a skyscraper or a bird sitting on top of a house?
The term that has more potential energy is bird sitting on the roof of a skyscraper.
What is the bird's potential energy?Due to its height above the ground, it has potential energy, and because it is moving, it has kinetic energy. Because of this, a bird in flight has both kinetic and potential energy.
Norte that Potential energy in physics is the energy that an item gets to retains as a result of its position in relation to other objects, internal tensions, electric charge, or other elements.
Therefore, Higher objects have more potential energy since they will fall further. The gravitational potential energy is highest for the heavier of two objects at the same height.
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what is the common characteristic of the electron configurations of the elements ne and ar? in which group would you find them?
Common characteristic of the electronic configuration of neon and argon have is their complete outer shell.
Neon (10) - 1s2, 2s2, 2p6
Argon (20) - 1s2, 2s2, 2p6, 3s2, 3p6
as we can see both the configurations have an complete outer shell means their octet is complete. This is the common characteristic of both the elements.
The both of them lie in group 8A that is the noble gases or inert gas.
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As soon as you realize that you are in danger, you feel your heart speed up. You feel very aware of your surroundings. Your whole body is preparing to run or fight for your life. Which of the following would be the response of your nervous system?
A)heart rate speeds up
B)body moves to a safer place
C)senses become sharper so you are better able to respond
D)stress hormones are transported around the
Answer:
C would be the nervous system reacting
If you wanted to know about the other answers:
A and D are the circulatory system since it's transporting stress hormones through the blood and the heart rate speeds up
B is the muscular and skeletal system since they are the ones that make your body move
Larisa pumps up a soccer ball until it has a gauge pressure of 61 kilopascals. The volume of the ball is 5.2 liters. The air temperature is 32°C, and the outside air is at standard pressure. How many moles of air are in the ball?
A. 0.13 mol
B. 0.33 mol
C. 1.2 mol
D. 3.2 mol
The number of mole of air in the ball, given that the volume of the ball is 5.2 litres is 0.13 mole (Option A)
How to determine the number of mole of airWe'll begin by listing out the given parameters from the question. This is given below:
Pressure (P) = 61 kilopascalsVolume (V) = 5.2 litresTemperature (T) = 32 °C = 32 + 273 = 305 KGas constant (R) = 8.314 L.KPa/Kmol Number of mole (n) =?From the above parameters, we can obtain the number of mole as follow
PV = nRT
61 × 5.2 = n × 8.314 × 305
317.2 = n × 2535.77
Divide both sides by 2535.77
n = 317.2 / 2535.77
n = 0.13 mole
Thus, the number of mole is 0.13 mole (Option A)
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What is the volume in liters of hydrogen gas that would be produced by the reaction of 55.0 g of Al with excess HCl at STP according to the following reaction?
2 Al (s) + 6 HCl (aq) → 2 AlCl₃ (aq) + 3 H₂ (g)
Answer:
About 68.495 L hydrogen gas
Explanation:
Can yall help me with this
The summary of the paragraph is that if you live on a high latitude there would be greater seasonal variation.
What is the equator?The equator is said to be that imaginary line that does divide the earth into the Northern and the southern Hemispheres. This implies that the equator is the line that divides the earth into to halves and the two haves of the earth are responsible for the variations in many things on earth such as the day and night experience.
We can see from the passage that if you are living in a position that is closer to the equator then it follows that the variation of day and night would have less difference as well as less of seasonal differences.
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At room temperature , 15.0 grams of zinc will occupy
At room temperature 15 grams of zinc will occupy 2.10 cm3
What is density of an element?
When atoms occupy a specific volume of space, their mass and number are measured by the periodic table's element densities. The quantity of mass in a particular volume, commonly expressed as grams per cm3 or g/cm3, is the density, which is a measurement of the number of particles in a certain volume of a substance.
Given the mass of zinc is 15 grams.
The density of zinc in room temperature is 7.14 g/cm^3
Density = mass/ volume
Volume = mass / density
Volume = 15/ 7.14 = 2.10 cm3
Hence, at room temperature 15 grams of zinc will occupy 2.10 cm3.
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Identify two raw materials necessary for photosynthesis.
Answer:
Water and CO2
Explanation:
These are both materials that are used in the process of photosynthesis that can be acquired from the around the plant, and the rain, which are natural raw materials that can be found anywhere in nature.
-Hope this helped
outline method to obtain pure crystals of potassium chloride from potassium chloride solution
Potassium chloride can be defined as a metal halide salt composed of potassium and chlorine. It is odorless and has a white or colorless.
To prepare Potassium Chloride from Potassium Chloride Solution.
1. KCl can be analyzed by reacting bases of potassium (such as potassium hydroxide) with hydrochloric acid. This ensures acid-base neutralization reaction will yield water and potassium chloride as the products.
KCL + HCL = KCL + H2O
2. Boiling the solution can help in removing the water until a super-saturated solution is obtained and then cooling the super saturated solution at room temperature and introducing a seed crystal of Potassium chloride, crystals of Potassium chloride are obtained.
This is how , pure crystals of potassium chloride from potassium chloride solution
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what would it mean if a reagent had turned color directly upon addition to the sample prior to addition of hydrogen peroxide?
Before the reaction of hydrogen peroxide, if a reagent had changed color immediately after being added to the sample, this would indicate the presence of a contaminant and the test would be invalid.
The above experiment is also knowns as a presumptive blood testing experiment in which if a contaminant is present, the test should be deemed invalid if a vivid blue or purple color appears after adding the TMB reagent but before adding the hydrogen peroxide; this is also frequently referred to as a "false positive" result.
Presumptive tests catalyze the oxidation of a chromogenic substance, which results in a color change, by reacting with the hemoglobin of all blood in humans and animals. If the test is positive, the material will be identified as potentially blood, though not necessarily human blood.
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a certain aqueous solution boils at 375.60 k (at 1 atm). at what temperature does the same solution freeze?
The aqueous solution here would freeze at -9.163 degree celsius.
The temperature at which it boils is 375.60 K. This gets converted into Celsius = 102.45-degree Celsius (i)
The standard temperature of boiling is = 100 degree Celsius (ii)
The standard temperature of freezing is = 0 degrees celsius (iii)
We know the formula -
Depression in cooling/ Elevation in boiling = [tex]K_{b}[/tex] / [tex]K_{f}[/tex] (iv)
The standard values for both Ks are 0.5 and 1.87 respectively. (v)
Using the given values of (i), (ii), (iii), (iv), and (v), we find that -
= (102.45 - 100.00) / (0 - x) = 0.5 / 1.87
x, here is the temperature for freezing.
= Temperature at which it freezes = - 9.163 degree Celsius.
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Explain the relationship of oxidation numbers to electron confguration for Groups IA through VITA. How can an atom's electron configuration be predicted on the basis of its location in the periodic table?
The oxidation numbers of the elements show us the number of electrons lost or gained which is traceable from the electron configuration which in turn depends on the group that the atom belongs to.
What is the oxidation number?
The oxidation number is the number of charges that an atom appears to have. We know that the elements that we find in the groups IA through VIA only have a narrow range of oxidation numbers. This is because the oxidation numbers does depend on the number of electrons that the atom can be able to loose or gain at a time.
We know that each of the groups are known by the maximum number of electrons that can be found on the outermost shell of the atom. This is part of the electron configuration of the atom. Thus, if we know the group that an atom belongs to, we can at least tell the outer electron configuration of the atom because we know that all the atoms in that group have the same outer electron configuration.
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what nacl concentration results when 264 ml of a 0.650 m nacl solution is mixed with 617 ml of a 0.470 m nacl solution?
The new concentration results in 0.512 M.
The concentration of a substance is the quantity of solute found in a given amount of solution. Concentrations are normally expressed in terms of molarity, defined because of the variety of moles of solute in 1 L of answer.
Calculation:-
final conc=m1v1+m2v2/(v1+v2)
final conc=209 × 0.71+407 ×0.41/(407+209)
final conc = 0.512 M
Concentration is the abundance of a constituent divided by way of the overall volume of an aggregate. several sorts of mathematical descriptions may be outstanding: mass concentration, molar concentration, variety concentration, and extent awareness.
The Concentration of an answer is a measure of the quantity of solute that has been dissolved in a given amount of solvent or answer. A concentrated answer is one that has a rather huge quantity of dissolved solute.
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what happens to electrons to form an ionic bond?
Answer:
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What happens to electrons when an ionic bond forms?
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It is the prior distribution of electrons that constitutes the electrostatic force of interaction..
Explanation:
Commonly, ions are formed by (i) the loss of electrons from metals... electron rich materials from the left of the Periodic Tables as we face the Table, whose valence electrons are furthest removed from the positively charged nuclear core... and (ii) the gain of electrons by non-metals to the right of the Periodic Table as we face it.
We could represent these processes by the reaction...
M→M
n+
+ne
−
oxidation
X+e
−
→X
−
reduction
We add the two redox processes together in such a way that the electrons are eliminated as virtual particles and we get a neutral salt... of a material and a non-metal that are held together by a strong electrostatic force of attraction...
M+nX→MX
n
And thus the electrons are formally redistributed to give positive and negative ions that combine to form NEUTRAL SALTS.
Name the following structure. (Points)
Thank you, image is attached !
IUPAC nomenclature of structure 1 is 5-bromo-3-ethyl-2,2-dimethylhexane and for structure 2 it is 1,1,4-trimethyl-3 -(1-methylethyl)cyclohexane
IUPAC nomenclature is based on naming a molecule's longest chain of carbons connected by single bonds, whether in a continuous chain or in a ring. All deviations, either multiple bonds or atoms other than carbon and hydrogen, are indicated by prefixes or suffixes according to a specific set of priorities
In structure 1 the longest chain was found to be a 6 carbon chain and the numbering started from the side where it is highly substituted. Hence the name is 5-bromo-3-ethyl-2,2-dimethylhexane
In structure 2 we have a cyclic structure and so the numbering will be done in such a way that all the substituent gets the least numbering hence the name of the compound will be 1,1,4-trimethyl-3 -(1-methylethyl)cyclohexane
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what are halogens. B) what are transition elements.C) what are alkali metals .... please i need the awnser asap :)
Answer:
C.. Group I element they dissolve in water to form alkaline solution
B.. Element between group II and III and most of them form coloured compound
A... Group VII element they react with metals to form salts
What is the purpose of the glass heat shield? Why is it important?
A heat shield is essentially a thermal barrier intended to keep things from overheating. The automotive industry to isolate the engine block to stop heat damage to the bodywork and internal parts.
What is a heat shield used for?A heat shield is essentially a thermal barrier intended to keep things from overheating. They are frequently employed in the automotive industry to separate the engine to stop heat damage to the bodywork and internal parts.
What occurs if a heat shield is absent?If the heat becomes too high, plastic engine parts may melt or deform, and belts may also become damaged. You should schedule a visit with your mechanic right away if you start to smell burning emanating from your car or discover that the engine hood is too hot to touch.
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what volume, in l, of 10.0 m hcl is needed to make 2.00 l of 2.00 m hcl solution by dilution with water?
To make 2.00 l of 2.00 m HCl solution by dilution with water, the volume of 10.0 m HCl needed is 0.4 l.
Dilution is defined as the process in which the concentration of a sample is decreased by adding more solvent. The dilution formula is given below.
C₁V₁ = C₂V₂
where C₁ = initial concentration of sample = 10.0 m
V₁ = initial volume of sample
C₂ = final concentration after dilution = 2.00 m
V₂ = total final volume after dilution = 2.00 l
Plug in the values to the formula and solve for the volume of the solution needed.
V₁ = C₂V₂/C₁
V₁ = (2.00 m)(2.00 l)/(10.0 m)
V₁ = 0.4 l
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(d)
A teacher collected two tubes full of hydrogen gas, as shown in figure 3
She tested tube A with a lighted splint as soon as she took the bung out.
She tested tube B with a lighted splint a few seconds after taking the bung out.
(1) Suggest why tube B gave a much louder pop than tube A.
Answer:
Explanation:
This practical can be used to introduce the idea that the relative amounts of a fuel and oxygen (from air) are important in combustion, and that there will be an optimum ratio in which the two substances react. This leads on to the idea of chemical equations.
In the case of a class experiment, where students generate the hydrogen themselves under strict supervision, all the hydrogen generators must be collected once the test tubes have been filled and before any flames are lit, to prevent the possibility of accidental or deliberate ignition of the hydrogen in the generator. This has caused a number of accidents in the past. Alternatively the test tubes could be filled with hydrogen beforehand, or by students under supervision, from a steady cylinder supply.
. an organic compound containing c, h, and o was analyzed by combustion. 6.237 g of the compound yielded 8.845 g carbon dioxide and 5.438 g of water. find the empirical formula of the compound. c
The empirical formula of the compound is CH3O
What is Combustion ?
Combustion is an exothermic, high-temperature redox chemical reaction between a fuel (reductant) and an oxidant (usually oxygen in the atmosphere), producing oxidized, often gaseous, gases in a mixture called smoke. A shaped product is produced. Combustion does not always lead to fire, as the flame is only visible when the substance undergoing combustion is vaporized, but when this occurs, the flame is a characteristic indicator of the reaction. Activation energy must be overcome to initiate combustion (for example, by starting a fire using a lit match), but the heat of the flame provides enough energy to make the reaction self-sustaining can provide.
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A small, rocky island is home to a community of organisms. They include birds, insects, lichen, moss, shrubs, and small plants. Flooding during a storm damages the ecosystem, except for the lichen and moss.
Predict how the ecosystem changes immediately during the flood, after the floodwater drains, and over time.
My prediction on the conspicuous changes which occurs simultaneously during flooding activities is that it decreases the oxygen levels which are available to habitat and even destroy the community.
How does flooding affect oxygen levels in a given community of organisms during flooding?The oxygen levels are affected whenever flooding activities occur in a given habitat when its activities damage the community by way of sedimentation.
So therefore, we can now confirm from the explanation above that when flooding occurs to a given habitat of organisms, it reduces the quality of water levels which directly affect the oxygen levels too.
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Force, Motion, and Newton's Laws (8.6 A and C):Question 3
A swimmer swims across a swimming pool. At the end
of the pool she turns around and pushes off the wall with
her feet. Which option describes a pair of action-
reaction forces during the push?
Select one:
O The force of her feet on the wall and the force of
the wall on her feet.
O The force of gravity on her body and the force of
her feet on the wall.
O The force of gravity on her body and the force of
the wall on her feet.
O The force of her feet on the wall and the force of
the water on her front
K
Option C. Choice describes a couple of movement-reaction forces for the duration of the frenzy: The force of gravity on her body and the force of the wall on her feet.
Newton's laws of motion are 3 fundamental laws of classical mechanics that describe the connection between the motion of an object and the forces acting on it. those legal guidelines may be paraphrased as follows: A body stays at relaxation, or in movement at a steady speed in a straight line, unless acted upon through pressure.
Within the first regulation, an object will not alternate its motion unless pressure acts on it. inside the 2nd law, the force on an item is equal to its mass times its acceleration. inside the third law, when two objects interact, they practice forces on each other of identical value and opposite routes. Newton's 2nd regulation is one of the most important in all of physics. For a frame whose mass m is regular, it is able to be written inside the shape F = ma, in which F (pressure) and an (acceleration) are both vector quantities. If a body has a net force acting on it, its miles are multiplied in accordance with the equation.
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concentrated nitric acid usually has a density of 1.4 g/ml and is 70% hno3 by mass (the rest is water). find the concentration of water in such a solution in mol/l.
The concentration of water in such a solution in mol/l is 0.0157 M.
Molar concentration is a measure of the concentration of a chemical species, particularly of a solute in an answer, in phrases of quantity of a substance per unit quantity of solution. In chemistry, the most commonly used unit for molarity is the range of moles consistent with liter, having the unit symbol mol/L or mol/dm³ in the SI unit.
Molarity (M) is the quantity of a substance in a certain volume of solution. Molarity is described as the moles of a solute consistent with liters of an answer. Molarity is likewise called the molar attention of a solution.
Calculation:-
The density of the solution is 1.41 g/mL.
1000 g of the solution will have a volume = Mass/ Density
= 1000 / 1.41
=709 ml.
The mass percent of nitric acid is 70%.
1000 g of the solution will have = 1000× 70/100
=690 g of nitric acid.
The molarity of the solution is = Mass of nitric acid / The molar mass of nitric acid ×Volume of solution.
Mass of nitric acid = 700 / 63×709
= 0.0157 M.
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incorrect your answer: not given ammonium perchlorate nh4clo4 is the solid rocket fuel that was used by the u.s. space shuttle and is used in the space launch system (sls) of the artemis rocket. it reacts with itself to produce nitrogen gas n2, chlorine gas cl2, oxygen gas o2, water h2o, and a great deal of energy. what mass of oxygen gas is produced by the reaction of 6.54g of ammonium perchlorate? round your answer to 3 significant digits.
The amount of oxygen formed when 6.54 grams ammonium perchlorate reacted is 0.89 grams.
The balanced chemical equation of the reaction of ammonium perchlorate is,
2NH₄ClO₄ → N₂ + Cl₂ + 2O₂ + 4H₂O
From the reaction it is clear that,
2 moles of ammonium perchlorate = 2 moles of oxygen
Moles of ammonium perchlorate = Moles of oxygen
Moles = Formed/reacted mass/molar mass.
Molar mass of Ammonium perchlorate is 117 g/mol.
Molar of oxygen is 16 g/mol.
Mass of NH₄ClO₄ is 6.54 grams.
Putting values,
6.54/117 = formed mass of oxygen/16
Formed mass of oxygen = 0.89 grams.
So, the mass of oxygen formed is 0.89 grams.
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which property is a chemical property of a substance
Answer:
reactivity, flammability,toxicity some more
