Al(OH)3 = weak electrolyte
HN3 = strong electrolyte
C8H10 = Non electrolyte
HC3H5O2 = weak electrolytes.
What are electrolytes?
An electrolyte is described as a medium containing ions that is electrically conducting through the movement of those ions, but not conducting electrons. Electrolytes includes most soluble salts, acids, and bases dissolved in a polar solvent, such as water.
The human cells use electrolytes to conduct electrical charges, which is how your muscles contract. Those same electrical charges gotten from also help with chemical reactions, especially when it comes to hydration and the balance of fluids inside and outside of cells.
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Question is in picture below!
The order of boiling point from the highest to the lowest from the given compounds above are as follows:
CH3CH2CH2CH2CH2OH - CH3CH2CH2CH2CH2Br - CH3CH2CH2CH2CH3 - CH3CH2CH3.
The correct order is option b, d, c and a.
What is meant by boiling point of substances?The boiling point of substances can simply be defined as that temperature at which liquids boils and then change to vapor or steam.
However, from the above given task, the organic compound, CH3CH2CH2CH2CH2OH has the same boiling simply because of its power to participate in hydrogen bond formation. This compound CH3CH2CH2CH2CH2OH is known as 1-pentanol.
So therefore, we can confirm that the compound from above the correct order of boiling point from the highest to the lowest is 1-pentanol, 1-bromopentane, pentane and propane respectively.
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An object is placed in 20 mL of water. This water rose to a level of 26 mL. The object has a mass of 18 g. What is the density of the object.
An object is placed in 20 mL of water. This water rose to a level of 26 mL. The object has a mass of 18 g. the density of the object is 3 g/mL.
given the data as follows :
mass of object = 18 g
volume of object = final volume - initial volume
volume of object = 26 mL - 20 mL
= 6 mL
the density expression is given as:
Density = mass / volume
Density = 18 g / 6 mL
Density = 3 g/mL
Thus, An object is placed in 20 mL of water. This water rose to a level of 26 mL. The object has a mass of 18 g. the density of the object is 3 g/mL
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why were gold and copper the first forms of matter investigated by humans??
Gold and copper were the first forms of matter investigated by humans because they were pretty and have a shiny appearance.
Gold and copper have a shiny face and they were used in the production of ornaments and jewelry. Along with jewelry many other precious items were made from gold and copper. Gold and copper were so valuable forms of matter and they are also economically used by many countries. Gold was mostly used in making of ornaments and copper was used in making of frames.
In today's modern world mainly gold is one of the most precious element which is obtained for economical use.
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Hydrogen atoms absorb energy so that electrons can be excited to the n = 6 energy level. Electrons then undergo these transitions, among others: (a) n = 4 → n = 3 (b) n = 6 → n = 3 (c) n = 5 → n = 4 (i) Which transition produces a photon with the least energy? (ii) Which transition produces a photon with the highest frequency? (iii) Which transition produces a photon with the shortest wavelength?
1) The transition that produces the least energy is n = 4 → n = 3
2) The transition that produces a photon with the highest frequency is n = 6 → n = 3
3) The transition that produces a photon with the shortest wavelength n = 4 → n = 3
What is the Bohr model?We know from the Bohr model that an electron that is found in the hydrogen atom can be moved from a lower to a higher energy level and that would happen when the electron is able to absorb energy in the form of visible light.
Looking at the transitions as we have it here, we can see that the photon that would photons produce the least energy would be two levels that are closest together.
Also, the photon that would have the highest frequency is the photon that is involved in the transition that has the furthest energy apart from each other.
The transition that produces a photon with the shortest wavelength must also be farthest apart in energy.
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what mass of iron(III) oxide must be used to produce 10.6g iron?
The mass of iron (II) oxide that must be used to produce 10.6 g of iron would be 14.37 grams.
Stoichiometric problemIron is produced from iron (II) oxide by reacting with carbon monoxide according to the following equation:
[tex]Fe_2O_3 + 3CO -- > 2Fe + 3CO_2[/tex]
The equation already obeys the law of conservation of atoms. Hence. it is a balanced equation.
The mole ratio of iron (III) oxide that reacts and the iron that is produced according to the equation is 1:2.
Now, in a particular reaction involving iron (III) oxide and carbon monoxide, 10.6 grams of iron were produced. The amount of iron (III) oxide used can be obtained using the mole ratio from the balanced equation of the reaction.
Recall that: mole = mass/molar mass
Molar weight of iron = 56 g/mol
Mole of 10.6 g of iron = 10.6/56
= 0.19 moles
Since the mole ratio is 1:2, the equivalent mole of iron (III) oxide that reacts can be obtained:
0.19/2 = 0.09 moles
Molar mass of iron (III) oxide = 159.69 g/mol
Mass of 0.09 mol iron (III) oxide = 0.09 x 159.69
= 14.37 grams
Thus, the amount of iron (III) oxide that must be used to produce 10.6 g of iron would be 14.37 grams.
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How many protons and electrons are present in one Br -ion2
Answer:
Br- has 35 protons and 36 electrons
Explanation:
Do you mean Br-?
Br has atomic number of 35 => 35 protons.
Neutral Br has 35 electrons.
Br- has 1 extra electron, resulting in total of 36 electrons.
Are there substances in the lab that have bonds that are not strictly ionic, covalent, or metallic? Explain your answers.
Metallic bonds occur amid metal atoms. Whereas ionic bonds combine metals with non-metals, metallic bonding fixes several metal atoms.
What determines bond is ionic, covalent, or metallic?An ionic bond is formed by joining a metal and a nonmetal, while a covalent bond is formed by allying two nonmetals. So we check the periodic table to see if our compound is made up of metals or nonmetals, or of two nonmetals.
Covalent compounds are built when two nonmetals react with each other. Since hydrogen is a nonmetal, binary compounds that carry hydrogen are also usually covalent compounds. Metallic elements produced compounds with non-metallic elements with the help of ionic bonds.
So we can conclude that In metals, the electrons leave the outer shells of metal atoms, devise positive metal ions and a 'sea' of delocalized electrons.
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What would 5 carbons, 3 chlorine group side chains, and one propyl group side chain look like?
The structure of the compound that have been described in the question is shown in the image attached to this answer.
What is the structure?We know that in organic chemistry, the structure of a molecule is very instrumental to the way that the molecule would be able to undergo reaction. In this case, we have a compound that is said to have 5 carbons, 3 chlorine group side chains, and one propyl group side chain.
Our key task is first to visualize the molecule and they try to create the structure of the molecule. As we try to create the structure of the molecule, we must have in mind the tetravalence of carbon. That is, carbon can only form four bonds to itself.
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how to balance by hit and trial method reaction
zn + Hcl - Zncl2 + Hcl
The balanced equation by hit and trial method is:
Zn + 2HCl → ZnCl2 + H2
Because a metal is replaced by another metal, the interaction between hydrochloric acid and zinc produces a single-displacement reaction.
This can be shown by,
B + CD → BD + C
There are two requirements: either B and D must be different metals (or any element that may form a cation, such as a hydrogen), while C must be an anion, or B and D must be halogens, while C must be a cation.
Count the Zn, Cl, and H atoms on each side of the chemical equation to balance the HCl-Zn reaction equation. To balance the equation, just alter the coefficients or the numbers that come before the atoms or compounds. The equation appears as follows after the coefficients have been changed:
ZnCl2 + H2 → Zn + 2HCl
Balance the molecular equation first.
Zn + 2HCl → ZnCl2 + H2
The net ionic equation will be, once the number of ions on both sides of the reaction is equalized by crossing them out.
Zn + 2H+ + 2 Cl– → Zn2+ + 2Cl– + H2
The balanced equation will be,
Zn + 2HCl → ZnCl2 + H2
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Identify what element is reduced and what element is oxidized in the following reaction. Pb + 2l2 Pbl4
Lead (Pb )is oxidised and Iodine(I) reduction in the given reaction.
What is oxidation and reduction of elements?
An increase in an element's oxidation state or the loss of electrons is referred to as oxidation.
Gaining electrons or lowering an atom's oxidation state are both considered to be reductions in the context of chemical reactions.
Pb + 2l2 gives Pbl4
The oxidation number of lead in non bonded form is zero. In PbI4 oxidation number of lead is + 4.There is an increase in the oxidation number. The oxidation number of iodine in free state is zero. Whereas in P I4 oxidation number iodine is -1, there is a decrease in oxidation number.
Hence, lead (Pb )is oxidised and iodine(I) is reduced in the given reaction.
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In the given balanced redox reaction, Pb is oxidised and I is reduced.
What are redox reactions?
A redox reaction is one in which electrons are transferred between different chemical species (the atoms, ions, or molecules involved in the reaction).Some species go through oxidation, which is the loss of electrons, while others go through reduction, which is the gain of electrons, during a redox process.From the given balanced redox reaction
Pb + 2 Cl₂ ⇄ PbCl₄
We can identify and write balanced half-reactions describing the oxidation and reduction that happen in this reaction.
Oxidation: Pb → Pb⁴⁺ + 4 e⁻
Reduction: 2 I₂ + 4 e⁻ → 4 I⁻
From the half reactions it is determined that Pb is oxidized and its oxidation number increases from 0 to 4+ while I₂ is reduced and its oxidation number decreases from 0 to 1-.
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Look at the atoms of the molecules used for london dispersion forces and diople-dipole forces. What do you notice about the difference in these atoms and waht explanation do you have for why that difference leads to different intermolecular forces?
The difference between the molecules that have dipole forces and those that have London forces is that the molecules that have dipole forces are polar while those that have London forces are not.
What is the dipole forces?We know that dipole forces are one of the kinds of intermolecular forces that exist. Let us note that a molecule is composed of the primary bond forces that hold the atoms of the molecule together and then the secondary bond forces that do hold the molecules together.
Now, the kind of interactions that exists between the molecules is the reason for the properties of the compound that we see. The molecules have not been shown here but I would discuss the properties of the London forces and the dipole forces.
Note that the molecules that do have the dipole forces have an electronegativity difference between the atoms of the molecule. The molecules that have the London forces are largely non polar.
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Without using the periodic table, determine the group, period, and block of an atom with the following electron configurations a. [ne]3s^2
The element is in 2nd group, 3rd period and s block.
How to check the group, period and block of the elements by looking at the electronic configuration?
The total number of valence electron gives us the group, the total number of shells gives us the period and the shell which the valence electron is entering tells us about the block it belongs to.
In [Ne]3s2, the valence electron is 2, the number of shells is 3 that is 1,2 and 3. the valence electron is entering the the s subshell.
Therefore, in [Ne]3s2, the group is 2nd, the period is 3 and it belongs to s block.
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A local AM radio station broadcasts at a frequency of 742 kHz.
Calculate the wavelength at which it is broadcasting.
Wavelength =
m
(1 kHz = 10 3 sec -1)
The wavelength of the wave is obtained as 0.4 m.
What is the wavelength of the broadcasting station?The wavelength has to do with the distance that have been covered by the wave. In this case, we can use the frequency of the wave that have been supplied in the question and the speed of light which is a constant to be able to obtain the wavelength of the wave.
Knowing that;
wavelength = speed of light/frequency
speed of light = 3 * 10^8 m/s
Frequency = 742 * 10^3 Hz
wavelength = 3 * 10^8 m/s/ 742 * 10^3 Hz
= 0.4 m
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What is the strength and weakness of vaccines ?
Answer:
Strength:
can prevent diseases from making you illWeakness:
the virus/bacteria can change shape and look and your body and the vaccine won't be able to recognize it anymoreA solution is prepared by dissolving sodium benzoate and benzoic acid in water to give a 9 mmol/litre concentration of each compound. The mixture has a pH of 4.21 at 25oC. Calculate the acid dissociation constant of benzoic acid, Ka.
Hint: pH = pKa + log10 ·[sodium benzoate] / [benzoic acid]
A solution is prepared by dissolving sodium benzoate and benzoic acid in water to give a 9 m mol / liter concentration of each compound. The mixture has a pH of 4.21 at 25 °C. the acid dissociation constant of benzoic acid, Ka is 6.1 × 10⁻⁵.
the pH of solution is given as :
pH = pka + log ( [sodium benzoate / benzoic acid])
4.21 = pka + log 1
pka = 4.21
pka = - log ka
ka = 10^- pka
ka = 6.2 × 10⁻⁵
Thus, A solution is prepared by dissolving sodium benzoate and benzoic acid in water to give a 9 m mol / liter concentration of each compound. The mixture has a pH of 4.21 at 25 °C. the acid dissociation constant of benzoic acid, Ka is 6.1 × 10⁻⁵.
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Blimps, which frequently fly over sporting events, hold approximately 1.85×10^5 ft3 of helium.
Part A
If the gas is at 23 ∘C and 1.0 atm, what mass of helium is in the blimp?
Express the answer in kilograms to two significant figures.
The mass of the Helium that is produced is 860 Kg.
What is the mass of the Helium?We know that we must first be able to obtain the number of moles of the Helium gas from the ideal gas equation and that is the first step in our solution.
Thus we have;
Volume of the gas = 1.85×10^5 ft3 or 5.23 * 10^6 L
Temperature of the gas = 23 ∘C + 273 = 296 K
Pressure of the gas = 1.0 atm
Number of moles of the gas = ??
Gas constant = 0.082 atmLK-1mol-1
Then;
PV = nRT
P = pressure of the gas
V = volume of the gas
n = Number of moles of the gas
R = gas constant
T = temperature
n = PV/RT
n = 1.0 atm * 5.23 * 10^6 L/0.082 atmLK-1mol-1 * 296 K
n = 5.23 * 10^6/24.27
n = 2.15 * 10^5 moles
Mass of the Helium = 2.15 * 10^5 moles * 4 g/mol = 860 Kg
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convert 0.87 atm to inches Hg. please explain step by step
Answer:
26.03 inHg
Explanation:
1 atm = 29.92 inHg
0.87 atm = 29.92 inHg x 0.87
0.87 atm = 26.03 inHg
0.50 g of Mg reacts with excess oxygen in a
bomb calorimeter with a heat capacity of
3290 J/°C. The initial temperature is 21.5 °C
and the final temperature is 25.2 °C.
What is the enthalpy of the reaction?
The enthalpy of the reaction 12173 J/°C
Heat capacity or thermal capability is a bodily belonging of count number, described as the quantity of warmth to be supplied to an object to provide a unit trade in its temperature. The SI unit of heat capacity is joule in line with kelvin. heat capacity is an intensive property.
Heat capability is described as the quantity of warmth strength required to raise the temperature of a given quantity of matter through one diploma Celsius. warmth ability for a given count depends on its length or amount and as a result, it's far an extensive asset. The unit of heat capacity is joule in line with Kelvin or joule according to degree Celsius.
Calculation:-
heat = msΔT
= 0.50 × 3290 × (25.2 - 21.5)
= 0.50 × 3290 × 3.7
= 6086.5 J
q = mΔHf
ΔHf = q/m
= 12173 J/°C
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If a sulfuric acid (H₂SO₄, MM = 98.09 g/mol) solution is completely neutralized with 61.37 mL of the NaOH solution above what was the mass in grams of sulfuric acid in the solution. Remember, you need a balanced chemical reaction for stoichiometry. (do not forget about SF)
Assuming the concentration of the NaOH solution that reacted with the sulfuric acid is 1.0 M, the mass of the sulfuric acid that reacted is 3.01 g.
What is a neutralization reaction?A neutralization reaction is a reaction in which an acid reacts with a base to form salt and water only.
In the given reaction, a given amount of sulfuric acid was neutralized by 61.37 m:L of a NaOH solution.
The equation of the neutralization reaction is given below:
2 NaOH (aq) + H₂SO₄ (aq) ----> Na₂SO₄ (aq) + 2 H₂O (l)
The mole ratio of the reaction shows that 2 moles of NaOH solution will react with 1 mole of H₂SO₄ solution.
The moles of NaOH reacting = concentration * volume in liters
The concentration of the NaOH solution is not given. Assuming the concentration of the NaOH solution is 1.0 M
Moles of NaOH reacted = 1.0 * 61.37 mL * 1 L / 1000 mL
Moles of NaOH reacted = 0.06137 moles
Moles of H₂SO₄ reacted = 0.0614 / 2
Moles of H₂SO₄ reacted = 0.0307 moles
Mass of H₂SO₄ reacted = 0.0307 * 98.09
Mass of H₂SO₄ reacted = 3.01 g
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At 125 °C a gas has a volume of 145 mL. What will the volume be at 25.0 °C ?
If a gas has a volume of 145 mL at 125 °C, then it will have 108.56 mL at 25 °C.
According to Charles’ law, the volume of a gas is directly proportional to the temperature.
Thus, V1/T1=V2/T2 .......(i)
Here, V1 ⇒ initial volume
T1 ⇒ initial temperature in Kelvin
V2 ⇒ final volume
T2 ⇒ final temperature in Kelvin.
In the given question:
V1 = 145mL
T1 = 125°C= (125+273)K= 398K
T2 = 25°C= (25+273)K= 298K
Putting these values in equation (i),
145mL / 398K = V2 / 298K
Solving for V2, we get
V2 = 145mL * 298K /398 K
V2 = 108.56 mL
Therefore, at 25 °C, the gas will have a volume of 108.56 mL.
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The chemical equation below shows reactants and products.
6CO₂ +12H₂O+light + enzymes - C6H12O6 +602 + 6H₂O
Which statement is BEST supported by analyzing this equation?
A. CO, is made from the chemical reaction.
B. No new compounds are made from this reaction.
C. O,, oxygen gas, is needed to make the reaction start.
D. The atoms rearrange in the chemical reaction so that CeHuO.
glucose, is made.
Option D. The atoms rearrange in the chemical reaction so that glucose is made.
A chemical reaction is a manner in which one or extra substances, the reactants, are transformed into at least one or extra different materials, the goods. materials are both chemical factors or compounds. A chemical reaction rearranges the constituent atoms of the reactants to create one-of-a-kind substances as merchandise.
Examples of chemical reactions in everyday life consist of photosynthesis, rust, baking, digestion, combustion, chemical batteries, fermentation, and washing with soap and water. Chemical reactions arise everywhere in the global around you, now not simply in a chemistry lab.
On the idea of the product fashioned, special forms of reactions are Combustion response, Decomposition response, Neutralization response, Redox response, Precipitation or Double-Displacement reaction, Synthesis response
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iupac name
answerrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr
Answers answer questions and
In an investigation of the decomposition of water, a student compared the amount
of oxygen in one test tube to the amount of hydrogen in the other test tube. Which
of the following statements is correct about the comparison?
A. There is twice as much oxygen as hydrogen.
B. There is an equal amount of oxygen and hydrogen.
C. There is one-half as much oxygen as hydrogen.
D. There is four times as much oxygen as hydrogen.
In an investigation of the decomposition of water, a student compared the amount of oxygen in one test tube to the amount of hydrogen in the other test tube is There is one - half as much as hydrogen.
In decomposition of water , water can be broken into the hydrogen gas and the oxygen gas. The water decomposition reaction is given as :
2H₂O ------> 2H₂ + O₂
The ratio of hydrogen and oxygen in the decomposition reaction of water is 2 : 1.
Thus, In an investigation of the decomposition of water, a student compared the amount of oxygen in one test tube to the amount of hydrogen in the other test tube is There is one - half as much as hydrogen.
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How many liters of gasoline contain 1.98kg of gasoline
Answer:1.4652
Explanation:
0.74g/ml
0.74x1.98
=1.4652
What does atomic number describe?
Responses
mass
mass
number of protons
number of protons
number of neutrons
number of neutrons
atomic weight
Answer:
Number of protons in the nucleus of an atom
please help!!!! ⚠️⚠️⚠️⚠️⚠️⚠️⚠️⚠️
Polyatomic ions: [tex]CH_3COO^-[/tex], [tex]NO_3^-[/tex], [tex]NH^+[/tex], [tex]CN^-[/tex], [tex]Li^+[/tex], and [tex]OH^-[/tex]
Monatomic ions: [tex]Ca^{2+[/tex], [tex]O^{2-[/tex], and [tex]Fe^{3+[/tex]
Monoatomic vs Polyatomic IonsIn chemistry, monoatomic ions are ions that consist of only a single type of atom. They are usually positive or negatively charged and are otherwise known as simple ions. Examples include [tex]Ca^{2+[/tex], [tex]O^{2-[/tex], and [tex]Fe^{3+[/tex]
Polyatomic ions, on the other hand, are ions that consist of more than one atom, unlike monoatomic ions. The two or more atoms are covalently bonded and the entire structure behaves like a single chemical entity in reactions. Polyatomic ions are otherwise known as molecular ions.
Examples of polyatomic ions are [tex]CH_3COO^-[/tex], [tex]NO_3^-[/tex], [tex]NH^+[/tex], [tex]CN^-[/tex], [tex]Li^+[/tex], and [tex]OH^-[/tex]
Thus, from the diagram:
Polyatomic ions: [tex]CH_3COO^-[/tex], [tex]NO_3^-[/tex], [tex]NH^+[/tex], [tex]CN^-[/tex], [tex]Li^+[/tex], and [tex]OH^-[/tex]Monatomic ions: [tex]Ca^{2+[/tex], [tex]O^{2-[/tex], and [tex]Fe^{3+[/tex]More on ions can be found here: https://brainly.com/question/14982375
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2
A chamber contains equal molar amounts of H₂, N₂, and O₂. If the
total chamber pressure is 2.00 atm, then the partial pressure of h2 is
The mole fraction must be known in order to determine the partial pressure of h2.
What is molar fraction?
The amount of a component, ni, expressed in moles, divided by the sum of all the components, ntot, likewise stated in moles, is known as the mole fraction or molar fraction (xi or I).
Below is an example of this phrase:
xi=ni/ntot
What is partial pressure?
If a container is filled with multiple gases, each gas will exert pressure, which is known as partial pressure. Its partial pressure is the pressure of any gas contained within the container.
Using this mole fraction formula:
=Xa/Xa+Xb+Xc
=XH2/XH2+XN2+Xo2
=1/3
=1/3×2=2/3
The partial pressure of h2 is 2/3
Therefore, the partial pressure of h2 is 2/3.
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An AM radio station broadcasts at 1030 kHz , and its FM partner broadcasts at 98.4 MHz
The energy from the photons in the FM station is greater than that from the AM station.
What is the energy of the both photons?We have to recall that the radio waves are also a part of the electromagnetic spectrum and that the speed that is possessed by all of the waves waves that are in the electromagnetic spectrum is the speed of light (3 * 10^8 m/s).
We have;
E = hf
E = energy
h = Plank's constant
f = frequency
For the AM station;
E = 6.6 * 10^-34 Js * 1030 * 10^3 Hz
E = 6.798 * 10^-28 J
For the FM station;
E = 6.6 * 10^-34 Js * 98.4 * 10^6 Hz
= 6.494 * 10^-25 J
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Missing parts;
An AM radio station broadcasts at 1030 kHz , and its FM partner broadcasts at 98.5 MHz .
partA;Calculate the energy of the photons emitted by the AM radio station.
partB;Calculate the energy of the photons emitted by the FM radio station.
partC;Compare the energy of the photons emitted by the AM radio station with the energy of the photons emitted by the FM radio station.
How is a tornado different from a hurricane
A. A tornado causes less damage to an ecosystem
B. A tornado brings more rain
C. A tornado is much smaller
D. Hurricanes do not impact life on land
Answer: C. A tornado is much smaller
Explanation: A tornado can be a mile long while hurricanes can be 50 miles long.
How many Joules are needed to increase the temperature of 150 g of water from 313K to 338 K?
-18,037.5 are joules are needed to increase the temperature of 150 g of water from 313K to 338 K.
What is joules?
In the International System of Units (SI), a joule is a unit of work or energy equal to the work done by a force of one newton acting through one metre. It is named after the English physicist James Prescott Joule and equals 107 ergs, or about 0.7377 foot-pounds. The joule is equal to one watt-second in electrical terms, which is the amount of energy released in one second by a current of one ampere through a resistance of one ohm.
The distinction between heat and temperature can be difficult to grasp. Heat is essentially the total amount of kinetic energy that a substance's molecules contain, and it is measured in joules (J). Temperature is measured in degrees and is proportional to the average kinetic energy of the individual molecules. When the same quantity of heat is applied to different materials, the temperature rises at varying rates depending on the substance's specific heat capacity. If you know the amount of the substance and its specific heat capacity, you may determine the final temperature.
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