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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3. All chemical reactions, whether they are endothermic or exothermic, must reach a particular activation energy to get started.
Describe the difference between reactions that have high activation energy and reactions that have low activation energy
Explanation:
for reactions to occur, the reactants must've reach a certain amount of energy for collisions to occur. hence, if a reaction has a lower activation energy, this energy can be reached sooner therefore, reaction would occur faster.
If 0. 3 moles of H2O were produced, how many moles of carbon dioxide would also have been produced?
In a chemical reaction, 0. 3 moles of H2O result in the production of 0.2 moles of CO2. Chemical reactions are the means through which one group of chemical compounds are changed into another.
Chemical reactions are typically defined as changes that only affect the positions of electrons in the formation and breakage of chemical bonds between atoms, with no change to the nuclei (i.e., no change to the elements present). These types of changes are often included in the term chemical reactions.
Number of moles Definition We utilize this enormous quantity to measure atoms. Additionally, it equals the 6.022* 10 23 atoms that make up 12 grammes of carbon-12, or atoms.
C2H6 + 7/2O2 = 2CO2 + 3H2O,
where moles(CO2)=(2*0,3)/3=0.2 mol,
and n(CO2)=(2*0,3)/3=n(H2O);
n(CO2)=n(CO2)=n(H2O).
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what is the melting point of a solution that is formed when 130 g of ethylene glycol (c2h6o2) is dissolved in 1.00 kg of water?
The melting point of a solution that is formed when 130 g of ethylene glycol (C2H6O2) dissolved in 1.00 kg of water is -6.518C.
What is melting point?
Melting point is the temperature at which substance changes state from solid to liquid. Different solids have different melting points. This depends on the pressure which is usually taken as standard pressure that is 1 atmosphere or 100kPa.
The melting point for the given solution can be calculated as,
Number moles of ethylene glycol is calculated as,
n = m / M = 130 g / 62 gmol^-1 = 2.096 mol.
m is mass, M is molecular mass.
Then the molality of the solution is calculated,
Molality = n / mass of solvent in Kg = 2.096 mol / 1 kg = 2.096 mol/kg
The Kf of ethylene glycol = -3.11
Melting point = Kf x molality = -3.11 x 2.096 = -6.518C.
Therefore, the melting point of a solution that is formed when 130 g of ethylene glycol (C2H6O2) dissolved in 1.00 kg of water is -6.518C.
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If one of the organ systems were removed or stopped functioning, how will it affect the health and activity of a person?
I need help with the table
But not the Lewis dot diagram part
The valence electrons and oxidation number and the total no. of dot is given below.:
a) Ca - 2 0 2
b) Ca⁺² - 0 + 2 0
c) Cl 7 0 7
c) Cl⁻ 8 -1 8
d) Li 1 0 1
e) Al³⁺ 3 +3 0
Valence electrons Oxidation number total number of dots
a) Ca 2 0 2
b) Ca⁺² 0 + 2 0
c) Cl 7 0 7
c) Cl⁻ 8 -1 8
d) Li 1 0 1
e) Al³⁺ 3 +3 0
Thus, the total number of valence electron , oxidation number and the total number of dots is given as:
a) a) Ca - 2 0 2
b) Ca⁺² - 0 + 2 0
c) Cl 7 0 7
c) Cl⁻ 8 -1 8
d) Li 1 0 1
e) Al³⁺ 3 +3 0
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in a typical heating curve, what is the nature of the slope of the curve when the substrate, in one state of matter, is being heated to another state of matter, but no change of state is occurring? group of answer choices slope < 0 slope
The temperature of a substance does not change while the state does, this shows that the slope has positive gradient. So, the answer is slope > 0.
What is heating curve?The heating curve is the relationship between the flow temperature of the heating system and the outside air temperature.The heat required to change the temperature of a particular substance (without changing phase) is: q = m × c × ΔT. The heat required to produce a particular phase change is given by q = n × ΔH. The slope is actually 1/mc. Continue heating and the solid will melt. During this time the temperature remains constant. The total length of this line is the amount of heat required to melt the solid.To know more about heating curve visit:
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Calculate the mass of silver deposited when a current of 3 ampere is passed through a solution of silver salt for 50 minutes
The mass of silver deposited in the electrode when a current of 3 ampere passes in 50 minutes is 6.71 g.
What is electrolysis?Electrolysis is the process of passing current through an electrolyte solution and results in the redox process where the reduced metal is deposited in the cathode.
The mass deposited w of a metal in electrolysis is can be calculated using the equation w = zit where, the z is the equivalent mass and t be the time I is the current passed.
The equivalent mass of Ag is 108 g. for one ampere the charge q will be 96500 C. Now,
w = 108 × 3 × ( 50 × 60 seconds) /96500 = 6.71 g.
Hence, the mass of silver deposited is 6.71 g.
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what if you measurd out more Fe then you calculated but the same amount of CUSO4 How would your amount of CU produced be affected
Answer:
Increase
Explanation:
Fe + CuSO4 - - > Fe2(SO)3 + Cu
If concentration of Fe increases, it will increase the frequency of collisions between the two reactants. Therefore the amount of Cu will also increase.
a flask is filled with 1.65 moles of a gas at 26.1 k and 444.8 mm hg. the flask is then opened and additional 1.76 moles are added. the temperature of the flask is then changed to 281.1 k. what is the pressure (in atm) of the flask under these final conditions?
The pressure of the flask under these final conditions is 13 atm .
What are moles ?
The current SI definition of moles and the "new SI" draft definition will be reviewed. Current textbook treatments of moles are compared to these official definitions. From a historical perspective, in 1971 he reviews the treatment of moles and material quantities in textbooks before and after the introduction of these quantities in SI. Textbook definitions do not always match official definitions, but reflect common usage by chemists. This is because when the new SI is adopted, the textbook definition will likely be closer to the official definition, and the draft definition more closely matches what is found in many textbooks than the current official definition. However, SI-based quantities of substances are likely to continue to cause problems for chemistry teachers and, if retained, are largely ignored by chemistry practitioners.
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what is the concentration in molarity of lithium hydroxide prepared by dissolving 48.0 grams 48.0 grams of solid in sufficient water to make 250 ml 250 ml of solution?
the concentration of lithium hydroxide in molarity was 8M
what are the properties of lithium hydroxide?
A transparent to water-white liquid with a possible strong odour is what lithium hydroxide solution looks like. Skin, eyes, and mucous membranes may have very irritating contact reactions. Through consumption, inhalation, or skin absorption, it may be harmful. Other compounds are created using it.
Given,
weight =48 g
No. of moles =2448=2 moles
volume =250mL
Molarity Volume (in L)No. of moles=0.25L2=8M
=8M
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what volume (in ml) of 1.508 m h3po4 (aq) would be required to react completely with 11.73 ml of 1.006 m ca(oh)2? (aq) aleks
The volume required is 4.86 ml that would be required to react completely with 11.73 ml of 1.006 m ca(oh)2.
This can be calculated using:
3Ca(OH)2 (aq) + 2H3PO4 (aq) ---> Ca3(PO4)2 (s) + 6H2O (l)
moles of Ca(OH)2 present: 11.00 moles
moles of H3PO4 needed: 7.33 moles
volume (mls) of H3PO4 needed: 7.33/1.508 = 4.86
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A volume of 25cm3 of a carbonate solution of concentration 0.2mol dm-3 was neutralized by 20 cm3 of acid of concentration 0.5 mol dm-3. The mole ratio in which the reactants combine is?
1 mol of carbonate to 1 mol of acid
1 mol of carbonate to 2 mol of acid
2 mol carbonate to 1 mol of acid
3 mol of carbonate to 1 mol of acid
The correct mole ratio of the reaction is 1 mol of carbonate to 2 mol of acid. Option B
What is the mole ratio?We know that the ratio of the reactants that are involved in a reaction is what we call the mole ratio. We have to note that a neutralization reaction is the type of reaction that occurs between an acid and a base. We also have to recall that is vita to be able to write the balanced reaction equation before we can be able to find the mole ratio.
Now, we have the balanced reaction equation as;[tex]CO_{3} ^2-(aq) + 2H^+(aq) ----- > H2O(l) + CO2(g)[/tex]. The reaction is thus a 1:2 reaction for the carbonate and acid.
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how many atoms of sulfur are in 60.0 g of aluminum sulfide, al2s3? molar masses: al: 27.0 g/mol s: 32.1 g/mol
There are [tex]1.77 * 10^{24}[/tex] atoms of sulfur in 60.0 g of aluminum sulfide.
How do you calculate the number of atoms in a gram?
To get the answer in grams, divide the element's relative atomic mass by Avogadro's number. The same method can be used to determine a molecule's mass. Add up all the atomic masses in the chemical formula in this situation and divide by Avogadro's constant.What is the purpose of aluminum sulfide?
Hydrogen sulfide is made with the help of aluminum sulfur. The chemical industry uses it most frequently. It is employed in the production of cathodes. It is used to create structures for nano-networks.To learn more about Aluminum sulfide, follow the link https://brainly.com/question/5390765
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sam wanted to do a demonstration for her class. the directions called for kcl. there was not kcl in the stockroom. what would be the best choice to substitute in the reaction?
NaCl would be the best choice to substitute in the reaction
The transfer of electrons from one reactant to another occurs during an oxidation-reduction (redox) reaction.
Numerous processes that you have already examined, such as single replacement, combustion, and combination, are redox processes. The loss of electrons is called oxidation. Gaining electrons is what reduction is. In the process, electrons are lost and gained simultaneously. For instance, when oxygen and elemental calcium react, calcium oxide is the result.
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a sample of a gas has a pressure of 95 kpa and takes up 4.0 l at a certain temperature. if the pressure is raised to 101 kpa and the volume expands to 6.0 l at 471 k. what was the original temperature?
According to combined gas law:
[tex]P_{1}V_{1}/T_{1}=P_{2}V_{2}/T_{2}[/tex]
So, given [tex]P_{1}=95kpa,V_{1}=4l,P_{2}=101kpa,V_{2}=6l,T_{2}=471k[/tex]
After substituting values in the formula,
[tex]95*4/T_{1}=101*6/471[/tex]
[tex]T_{1}=295k[/tex]
What is the Combined Gas Law?
The Combined Gas Law states that for a fixed amount of gas:PVT=k (k being the proportionality constant)
The Combined Gas Law combines Charles's Law, Boyle's Law, and Gay-Lussac's LawThe Combined Gas Law is written as: [tex]P_{1}V_{1}/T_{1}=P_{2}V_{2}/T_{2}[/tex]Thus, the original temperature is 295k.
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an ax ceramic compound has the rock salt crystal structure. if the radii of the a and x ions are 0.137 nm and 0.241 nm, respectively, and the respective atomic weights are 22.7 g/mol and 91.4 g/mol, what is the density of this material?
The density of the material would be 1.75 gm/cc.
p = n'∑Ac + ∑AA/VcNA
= n'(∑Ac + ∑AA)/9³NA
=n'(∑Ac + ∑AA)/(2(rA + rX))³ NA
n' = number of atoms per unit cell
= 4(assumption)
rA = 0.137 × 10⁻⁷ cm
rX = 0.241 × 10⁻⁷ cm
NA = Avagadros number
= 6.022 × 10²³
∑Ac = Atomic weight of all cations
∑AA = Atomic weight of all anions
p = n'(∑Ac + ∑∑AA)/(2(rA + rx))³NA
= 4(22.7 + 91.4/(2(0.137 × 10⁻⁷ + 0.241 × 10⁻⁷))³ 6.022× 10²³
= 1.75 gm/cc
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calculate the empirical formula for a compound that contains 40.0% carbon, 6.70% hydrogen, and 53.3% oxygen
The empirical formula for the hydrocarbon is CH₂O.
First, we assume that we have 100g of formaldehyde
According to the question we have 40.0% of carbon, 6.70% of hydrogen, and 53.3% of oxygen. With help of this, we calculate the moles of individual elements.
Moles of C = 40.0 g of C × 1 mol of C / 12.01 g C = 3.331 mol C
Moles of H = 6.7 g of H × 1 mol of H / 1.008 g H = 6.65 mol H
Moles of O = 53.3 g of O × 1 mol of O / 16.00 g O = 3.331 mol O
To get the molar ratio we divide all the moles by the smallest moles which are 3.331. From here the ratio comes out to be C: H: O = 1:2:1.
Thus the empirical formula is, CH₂O.
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assume that you have produced the amount of 2-methylbenzoic acid from the previous question. what volume, in ml, of 6m naoh would you need to fully deprotonate the 2-methylbenzoic acid?
If we assume that you have produced the required amount of 2-methylbenzoic acid, then we would require 4.2 ml of 6m NaOH to completely deprotonate the 2-methylbenzoic acid.
Benzoic acid is more acidic than 2-methylbenzoic acid. because the +R (electron donating) nature of the methyl group causes the negative charge on the oxygen atom to become destabilized when the latter ions form 2 methyl benzoate ion. Consequently, it wouldn't have a propensity to emit H+.
An inorganic substance having the formula NaOH is sodium hydroxide, sometimes referred to as lye and caustic soda. Sodium cations and hydroxide anions make up this white solid ionic combination.
volume of 6 m NaOH = 6 1.8 = 4.2 ml.
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Energy Changes and chemical Reaction
The volume of oxygen is 14.7 litres.
What is volume?
volume is a measure of occupied three dimensional space.
Sol-Balanced chemical reaction: C₃H₈ + 5O₂ → 3CO₂ + 4H₂O.
m(C₃H₈-propane) = 5.53 g.
n(C₃H₈) = m(C₃H₈) ÷ M(C₃H₈).
n(C₃H₈) = 5.53 g ÷ 44.1 g/mol.
n(C₃H₈) = 0.125 mol.
From chemical reaction: n(C₃H₈) : n(O₂) = 1 : 5.
n(O₂) = 0.625 mol.
T = 25° = 298.15K.
p = 1.04 atm.
R = 0.08206 L·atm/mol·K.
Ideal gas law: p·V = n·R·T .
V(O₂) = n·R·T / p.
V(O₂) = 0.625 mol · 0.08206 L·atm/mol·K · 298.15 K / 1.04 atm.
V(O₂) = 14.7 L.
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what is the chemical formula of the ionic compound formed along with water in the reaction of chlorous acid and barium hydroxide?
Barium chloride and water are created when barium hydroxide and hydrochloric acid combine.
what is ionic compound?
An ionic compound in chemistry is a chemical complex made up of ions kept together by electrostatic forces known as ionic bonding. Although the chemical is generally neutral, it does include positively charged ions known as cations and negatively charged ions known as anions. Simple ions like sodium (Na+) and chloride (Cl) in sodium chloride or polyatomic species like the ammonium (NH+ 4) and carbonate (CO2 3) ions in ammonium carbonate can be present in these compounds. Since each individual ion in an ionic compound typically has many nearest neighbours, they aren't thought of as being a part of molecules at all but rather as a continuous three-dimensional network. When solid, ionic chemicals often take the shape of crystals.
The balanced equation for this reaction is: 2HCl (aq) + Ba (OH)2 (aq) → BaCl2 (aq) +2H2 0 (1) If 4 moles of barium hydroxide react The reaction consumes moles of hydrochloric acid.
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what precautions should a remote pic do to prevent possible inflight emergencies when using lithium-based batteries?
When using lithium-based batteries In order to enable optimal recharging, store the batteries in a fridge.
What are the dangers of lithium batteries?As long as there are no flaws as well as the cells are not damaged, lithium batteries are type of ethical and unlikely to malfunction. Lithium batteries may pose a fire and/or detonation risk if they are damaged or unable to function safely.
Lithium or ion batteries: which performs better?For reliable and high-power use, lithium-ion and battery packs are both appropriate. But compared to battery packs, battery packs are more effective and common. This is so that they may be used in large quantities due to their higher power levels.
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Electronic configuration An element's atomic number tells you the number of _______________ in the nucleus. The number of in an atom is equal to the number of In the first shell of an atom there are shell there are_______ electrons. In the third shell there are electrons. electrons. In the second
Answer:
Electronic configuration An element's atomic number tells you the number of protons in the nucleus. The number of protons in an atom is equal to the number of electrons. In the first shell of an atom there are 2 electrons. In the third shell there are 18 electrons.
ridget performed an investigation to determine if a television set transformed electrical energy into other types of energy. She recorded her observations in a table. What statement best describes the results? Question Observation Does it transform into heat energy? Yes Does it transform into light energy? Yes Does it transform into sound energy? Yes Does it transform into energy of motion? No A television transforms electrical energy into heat and light energy. Electrical energy transforms into more than one type of energy. Sound energy is transformed from heat and light energy. You can transform electrical energy into energy of motion.
The statements that best describe Bridget's recorded observations are:
Does it transform into heat energy? YesDoes it transform into light energy? YesDoes it transform into sound energy? YesDoes it transform into the energy of motion? No1 A television is a device that converts electrical energy into heat and light energy.
2 Electrical energy may be converted into other types of energy.
3 Sound energy is created by combining heat and light energy.
4 Electrical energy may be converted into motion energy.
Energy transfer is the process of transferring energy from one system to another, such as by heat, work, or mass transfer.
Energy is required for living organisms to grow, breathe, reproduce, and move. Because energy cannot be created from a vacuum or a void, it must be transported via the biosphere. The sun is the principal source of energy for practically every ecosystem on Earth.
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Full Question:
Bridget performed an investigation to determine if a television set transformed electrical energy into other types of energy. She recorded her observations in a table. What statement best describes the results?
Question Observation
Does it transform into heat energy?
Does it transform into light energy?
Does it transform into sound energy?
Does it transform into energy of motion?
boron has two isotopes; boron-10 and boron-11. which is more abundant, given that the atomic mass of boron is 10.81?
Given that boron has an atomic mass of 10.81 amu, which is closer to 11 than 10, boron-11 is more common. This indicates that boron-11 is more prevalent.
What is atomic mass ?The quantity of protons and neutrons in a specific element's nucleus is known as the atomic mass. This number of electrons in an object's nucleus is often indicated by its atomic number. It is an element's typical weight. The mass of the neutrons and protons can be added to determine the isotopes of an atom in an element.
Why do we use atomic mass?The term "atomic mass" refers to the weight of a molecule or atom. To determine the average weight of elements and macromolecules as well as to resolve stoichiometry issues, the number of protons is used.
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chemicals that are not medicinal but are encountered in the environment or in industrial activity include all of the following, except...
Carbon Dioxide.
A presumptive test called phenolphthalein reacts with the heme molecule found in blood. Pink is produced when a reaction is favorable. While bloodstains typically have a reddish-brown hue, the color of the substrate or the stain's age can have an impact on how visible or noticeable the stain is.
A technique for separating substances or metal complexes based on their relative solubilities in two different immiscible liquids, typically water (polar) and an organic solvent, is known as liquid-liquid extraction (LLE), also known as solvent extraction and partitioning (non-polar).
Precipitin Test confirmation is required for positive results. The serologist must determine whether a stain is actually blood after a presumptive test suggests it might be blood. A precipititin test can detect proteins that are only present in human blood.
The Ouchterlony test compares the responses of a blood sample to particular antibodies to identify if it is human or animal. A sample of the unidentified bloodstain is put in an agar gel well.
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Which of these statements is one of the conclusions that formed the basis of dalton’s atomic theory?.
The correct answer is option D.
The statement that formed the basis of Dalton’s atomic theory is atoms are the smallest particles of matter and cannot be divided farther.
In 1808, Dalton presented a theory named atomic theory which suggests that atoms are the smallest particles of an element and it is impossible to divide them further.
According to his theory every element is composed of these tiny particles.
Furthermore, his theory suggests that atoms neither can be divided nor destroyed.
In a particular matter, for example gold, all atoms have similar properties while their mass varies for every single different element.
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The complete question is:
Which of these statements is one of the conclusions that formed the basis of Dalton’s atomic theory?
a. Atoms can only change into atoms of another element through nuclear reactions.
b. Atoms of gases have less mass than atoms of liquids and solids.
c. Atoms of a particular element all have the same number of protons.
d. Atoms are the smallest particles of matter and cannot be divided farther.
Which missing item would complete this alpha decay reaction?
The missing item which would complete this alpha decay reaction is: C. ²⁵³Fm₉₈.
The types of radioactive decay.In Science, there are three (3) main types of radioactive decay and these include the following:
Beta decayGamma decayAlpha decayWhat is an alpha decay?An alpha decay can be defined as a type of radioactive decay in which the atomic nucleus of a radioactive element emits an alpha particle, thereby, producing chemical elements that have different atomic nucleus.
During an alpha decay, a radioactive element such as fermium (Fe) with a mass number of 257 would be decreased by four (4) while its atomic number (number of protons) of 100 is decreased by two (2), to produce an isotope and an atom of Helium (⁴He₂), as illustrated in the chemical reaction below:
²⁵⁷Fe₁₀₀ ----> ²⁵³Fm₉₈ + ⁴He₂
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5. What is the difference between an orbital, a
sublevel, and an energy level?
Energy levels are the fixed distances of electrons from the nucleus, sublevel is a level that is lower than another level whereas an orbital is the most likely location of an electron present around an atom.
What is orbital, sublevel, and energy level?The sublevels contain carry orbitals. Orbitals are spaces that have a high prospect of containing an electron. An orbital is an area or location where the electrons are present. There can be two electrons in one orbital extreme. Each energy level or shell is divided into many sublevels. Both sublevel and subshell are used interchangeably. The sublevels are constituted by the letters s, p, d, and f. Each energy level has certain sub-levels. Therefore, these circular orbits are called as energy levels or energy shells. The orbits of an atom act for the energy levels of the electrons in it.
So we can conclude that Orbitals and sublevels are both concepts used in chemistry to describe the energy states of electrons.
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The letter "B" is labeling what part of the wave?
B
Wavelength
Compression
Rarefaction
Amplitude
Answer:
What property of the wave is addressed by the letter B?
Picture result for The letter "B" is marking which part of the wave? B Frequency Pressure Rarefaction Plentifulness
What property of the wave is addressed by the letter "B"? Abundancy.
Explanation:
1,Wavelength,
Definition: Frequency can be characterized as the distance between two progressive peaks or box of a wave. It is estimated toward the wave.
2,Compression,
pressure thing [U] (Go ahead)
the demonstration of squeezing something into a more modest space or coming down on it from various sides until it gets more modest: Structural powers caused pressure in the world's outside layer.
3,Rarefaction,
At the point when rarefaction happens, the particles in a gas become more fanned out. You might run over this word with regards to sound waves. A sound wave traveling through air is comprised of exchanging areas of higher and lower thickness. The areas of lower thickness are called rarefactions
4,Amplitude,
At the point when rarefaction happens, the particles in a gas become more fanned out. You might go over this word with regards to sound waves. A sound wave traveling through air is comprised of substituting areas of higher and lower thickness. The areas of lower thickness are called rarefactions
how many grams of glucose (c6h12o6) are in 4.9 moles of glucose? report your answer to the nearest 1 g.
The answer is 0.0055 grams of glucose (c6h12o6) are in 4.9 moles of glucose
The formula weight is a quantity calculated in chemistry by multiplying each element's atomic weight (measured in atomic mass units) by the number of atoms it has in the formula, and then adding up the results. Sometimes referred to as equation weights, these relative weights computed from the chemical equation. This is how isotropically weighted averages are used to get the molar mass(of glucose) (average molecular weight). This differs from molecular mass, which is the weight of a single molecule made up of distinct isotopes.
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