Answer:
Si ⇔ Neon
Fr ⇔ Radon
Hg ⇔Xenon
V ⇔Argon
Explanation:
Silicon (Si) is, part of the carbon-group, and has atomic number 14. This means it has 14 protons and 14 elecrons ( same amount), as well as 14 protons ( 28-14).
⇒There are 14 electrons spread over 3 shells.
If we look closer to the electron configuration of a silicon atom:
₁₄Si 1s² 2s² 2p⁶ 3s² 3p² ⇔ this is [Ne] 3s² 3p²
⇒ Neon (Ne) is noble gas ( group 18) with atomic number 10.
⇒The following orbital is 3s, which is complete with 2 electrons.
⇒The next orbital is 3p, and Silicon is the second element in that section, so two electrons are used.
Francium (Fr) is part of the alkali / lithium group and has atomic number 87. This means it has 87 protons and 87 electrons ( same amount), and 136 neutrons (223 - 87).
⇒There are 87 electrons spread over 7 shells.
If we look closer to the electron configuration of a francium atom:
₈₇Fr 1s²2s²2p⁶ 3s² 3p⁶ 3d¹⁰ 4s² 4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² 6p⁶ 7s¹ ⇔ this is [Rn] 7s¹
⇒ radon (Rn) is noble gas( group 18) with atomic number 86
⇒we will see that the 4 s orbital fills with electrons before any of those in the 3 d subshell as the 4 s orbital is lower in energy than the 3 d s, and it is favorable for electrons to fill low-energy orbitals first (closer to the nucleus)
⇒Francium will fill orbitals all the way up to the 7 s subshell, where it will have a half-filled orbital: 7 s 1
Mercury (Hg) is part of the zinc group, and has atomic number 80. This means it has 80 protons and 80 electrons ( same amount), and 121 neutrons ( 201 - 80).
⇒There are 80 electrons spread over 6 shells
If we look closer to the electron configuration of a Mercury atom:
₈₀Hg 1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶ 4d¹⁰ 5s² 5p⁶ 4f¹⁴ 5d¹⁰ 6s² ⇔ this is[Xe] 4f¹⁴ 5d¹⁰ 6s²
⇒xenon (Xe) is noble gas ( group 18) with atomic number 54.
⇒After the 6s orbital is filled, 4f fills next (can hold 14 electrons) because it lower in energy than 5d.
⇒Then, the 10 remaining electrons will go in the 5d orbital. The f orbitals will always be one principle quantum number(n) behind the d orbitals.
Vanadium (V) is part of the vanadium group, and has atomic number 23. This means it has 23 protons and 23 electrons (same amount), and 28 neutrons (51 - 23).
⇒There are 23 electrons spread over 4 shells
If we look closer to the electron configuration of a vanadium atom:
₂₃V 1s² 2s² 2p⁶ 3s² 3p⁶ 3d³ 4s² ⇔ this is [Ar] 3d³ 4s²
⇒argon (Ar) is a noble gas (group 18) with atomic number 54.
⇒ When the atom of V releases 5 electrons from 3d and 4s orbital, V ion (V5+) will attain the octet structure, 1s2 2s2 2p6 3s2 3p6 which is same as Argon
Answer:
Neon (Ne) for Silicon (Si)
Radon (Rn) for Francium (Fr)
Xenon (Xe) for Mercury (Hg)
Argon (Ar) for Vanadium (V)
Explanation:
Did it on edge
What is the energy of a microwave photon of frequency 2.5x 10^9 HZ?
Answer in units of J.
Answer:
the energy of a microwave photon E = 16.565 x 10^-25 Joule
Explanation:
To get the energy of the photon we are going to use this formula : E = hf
when E is the energy of the photon which we need to calculate
h is Planck's constant = 6.626 x 10^-34 J.S
f is the photon of frequency = 2.5 X 10^9 Hz
so by substitution:
the energy of a microwave photon E = 6.626 x 10^-34 J.S * 2.5 X 10^9 S-1
= 16.565 x 10^-25 Joule
Final answer:
The energy of a microwave photon with a frequency of 2.5 x 10⁹ Hz is 1.6565 x 10⁻²⁴ Joules, calculated using Planck's equation.
Explanation:
The question asks: What is the energy of a microwave photon of frequency 2.5 x 10⁹ Hz? To find this energy, we use Planck's equation, which states that the energy (E) of a photon is equal to the product of Planck's constant (h) and the frequency (f) of the photon. Mathematically, this is expressed as E = hf. Planck's constant is 6.626 x 10⁻³⁴ J-s. Substituting the given frequency and Planck's constant into the equation gives E = (6.626 x 10-⁻³⁴J-s)(2.5 x 10⁹ Hz), which calculates to 1.6565 x 10⁻²⁴ Joules (J).
Which option correctly explains electrical conductivity of metals?
Metals are poor conductors of electricity because the inner electrons in metallic crystals are not free to move.
Metals are poor conductors of electricity because the valence electrons in metallic crystals are not free to move.
Metals are good conductors of electricity because the valence electrons in metallic crystals are free to move.
Metals are good conductors of electricity because the inner electrons in metallic crystals are free to move.
Answer:
Metals are good conductors of electricity because the valence electrons in metallic crystals are free to move.
Explanation:
Metallic bonds joins atoms of metals and alloys together. The formation of this bond type is favoured by large atomic radius, low ionization energy and a large number of electrons in the valence shell.
The metallic bond is responsible for the bulk of the physical properties of metals we know such as malleablility, ductility, electrical and thermal conductivity e.t.c.
Which best describes the purpose of a control sample
Answer:
The purpose of a control sample is to compare its results to those with the experimental sample. Control sample is a type of renown forensic samples usually used to ensure analyses are properly performed to assure reliable results.
HOPE THIS HELPED!!!!!!!!!!!XDDDDDDDDD
The control sample in the experimental system has been used as the reference for the test.
The experimentation setup has been consisted of the test sample along with the control sample as designated conditions.
What is the use of Control sample?The control sample has been set in an experimental setup as the reference. The test sample has been consisted of the substance to be tested, and the control sample lack the substance.
The samples are treated at equivalent conditions and the results has been compared from test to control abut the difference bought by the substance.
Thus, the control sample in the experimental system has been used as the reference for the test.
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"Any process used to ask and answer testable questions about observations of the natural world" defines which term?
Answer:
Scientific inquiry
Explanation:
A scientific inquiry is a systematic way of finding out about certain phenomena in our environment through the use of careful observations and experimentation. It follows a series of steps and procedures which helps a scientist to critically think and observe certain events in his environment. Through the observations, scientific conclusions are then drawn.
9474 millimeters to centimeters using scientific notation showing work
Answer:
9.474 x 10^2
Explanation:
ok. first you have to get the value in the required unit so 9474mm/(10mm/cm) = 947.4 so scientific notation states that the number must be raised to any power of an integer and the value of the number being raised must be less than than 10 and more than or equal to 1
so it must have one digit in front so.. 947.4 becomes 9.474 and because you move 2 places to the left, ur power is positive 2
and proof 10^2 is 100 so multiply 9.474 by 100 and u will get 947.4 cm which is also 9474 mm
Grade
In a chemical reaction, sulfuric acid and aluminium metal react
to form hydrogen gas and a salt solution of aluminium sulfate.
Ben has written this equation for the reaction:
Al +H,SO(g) → A1,(SO )3(aq) + H, (R
Ben's equation is not balanced. Write a balanced chemical equation for this reaction.
Answer:
2Al + 3H2SO4 (g) → Al2(SO4)3 (aq) + 3H2 (g)
Explanation:
On the right side we have Al2 ( so 2x aluminium, So on the left side we multiply Al by 2, On both sides is 2x Al now)
The formula for Sulfuric acid is H2SO4.
The result ( aluminium sulfate ) is Al2(SO4)3. Aluminium has an oxidation number of +3, SO4 has an oxidation number of -2 ( S(+6) + 4O (4x-2) : 6-8 = -2
So we have to multipy aluminium 2x and SO4 (3x) to equal.
On the right side we have 3x S, so on the right side we have to multiply H2SO4 also by 3 to get the same amount.
This results in 12x Oxygen (3xO4). Which is the same as the right side.
On the left side we have 6H ( 3xH2) so on the right side we multiply H2 by 3 to get the same amount.
So we have on both sides:
2x Al
6xH
3xS
12xO
Rob is conducting an experiment in which he measures a person's body temperature in response to changes in air temperature. What is the independent variable that is manipulated in the experiment?
Answer:
Explanation:
Persons body temperature
Answer: Change in air temperature is the independent variable
Explanation:
The independent variable can be defined as the factors that is under control of the experimenter.
There can be changes in the air temperature based on that the temperature of the body will change.
So, in this condition the independent variable is air temperature and dependent variable is body temperature.
A student calculates the density of iron as 6.8 g/cm3 using lab data for mass and volume. A handbook reveals that the correct value is 7.39 g/cm3. What is the percent error?
Answer:
7.983761 %
Explanation:
Step 1: What is percent error ?
⇒Percent error is calculated using the following formula:
⇒% error = | Experimental value-theoretical value/theoretical value | x 100%
⇔ this can be written as well as : error = (| Experimental value/ theoretical value | - | Theoretical value / Theoretical value | ) * 100%
⇒ which, after simplifying, will become :
%error = (| Experimental value - theoretical value - 1 |) x 100%
For this case, this means :
%error = ( |6.8 g/cm³ - 7.39g/cm³ - 1 | ) x100%
%error = | 0.92016238 -1 | x100%
%error = |-0.07983761 | x100%
%error = 0.07983761 x100%
%error = 7.983761 %
The %error is 7.983761 %
If an isotope of an element has 40 neutrons and a mass number of 79, how many electrons must it have?
Answer: 39 electrons
Explanation: Subtract 79 by 40 to get the atomic number (amount of protons) which is 39. The number of electrons must be the same as the number of protons if it's not an ionic compound so the amount of electrons is the same amount of protons.
To find the number of electrons in an atom, identify the atomic number which is equal to the number of protons. Since the mass number is 79 and the isotope has 40 neutrons, the number of protons is 39, meaning an atom of this isotope also has 39 electrons.
Explanation:In order to find the number of electrons in an isotope of an element, we need to identify the atomic number of the isotope. The atomic number is equal to the number of protons in the nucleus of the atom, which is also equal to the number of electrons in a neutrally charged atom.
The mass number of an isotope is the total number of protons and neutrons in the nucleus. Given that the mass number is 79 and the isotope has 40 neutrons, we can subtract the number of neutrons from the mass number to find the number of protons: 79 - 40 = 39.
Therefore, we can conclude that the volumetric element has 39 electrons. This is because in a neutrally charged atom, the number of electrons equals the number of protons.
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The substances in a ___________ mixture can usually be seen and are easily separated.
A. homogeneous
B. heterogeneous
C. simple
D. compound
The substances in a heterogeneous mixture can usually be seen and are easily separated, exemplified by a mixture of sand and water. Option B is correct.
The substances in a heterogeneous mixture can usually be seen and are easily separated. A heterogeneous mixture consists of two or more substances that are not uniformly distributed, meaning the different components can usually be observed with the uncovered eye.
An example of a heterogeneous mixture is a mixture of sand and water, where the sand can be easily seen and separated from the water by simple means such as filtration.
In contrast, a homogeneous mixture is uniform, meaning its composition is the same throughout, and the different components cannot be seen. Salt dissolved in water is an example of a homogeneous mixture because the salt is evenly distributed within the water and cannot be seen separately.
Hence, B. is the correct option.
Which statements describe lattice energy?
Answer:
Which statements describe lattice energy?
B,C,D
Explanation:
just did it
Both protons and neutrons are located inside the nucleus of an atom. Changing the number of neutrons in the nucleus would form different isotopes of the same element. Which of these BEST describes the outcome of decreasing the number of protons in the nucleus?
A) The element would become an ion.
B) The atom would become a different element.
C) The number of neutrons would also decrease.
D) The atomic mass of the element would increase.
Answer:
A
Explanation: Decreasing the protons makes the atom negatively charged as there is less protons and more electrons therefore it's an ion now.
Answer:
B) The atom would become a different element.
Explanation:
As we know, the proton is a subatomic particle characterized as the particle that has a positive charge.
An atom can gain, lose or share electrons to achieve electronic stability. However, this does not happen with the proton. If the number of protons in a element decreases, that element begins to have a different atomic number, which indicates that another element has been formed.
Which law states that the volume and absolute temperature of a fixed quantity of gas are directly proportional under constant pressure conditions?
Boyle’s law
Charles’s law
Dalton’s law
Gay-Lussac’s law
Answer:
Charles law
Explanation:
Relationship between volume and absolute temperature is given by Charles's law.
According to Charles's law, at constant pressure, volume of a gas of a fixed quantity is directly proportional to the absolute temperature.
Mathematically Charles's law is expressed as:
[tex]V \propto T[/tex]
Charles's law is applicable only for ideal gases.
Bolyles's law gives relationship between pressure and volume at fixed temperature.
Gay-Lussac’s law gives the relationship between pressure of a gas and its absolute temperature.
Dalton's law gives the relationship between pressure of the mixture of non reacting gases and partial pressure of individual gas.
Therefore, among, Charles's law is the correct opion.
You and your roommates have already decided to spend a week volunteering in the relief effort over the winter break, but in order to convince your roommates to write to Congress to demand action on climate change, you want to give them a sense of how much water fell. To do this, you calculate how many gallons of water would be in your dorm room if 52 inches of rain landed in this space. Assume that your dorm room is 228 ft^2 and know that 1 gallon = 231 in^3 and that 1 foot = 12 inches.
Answer:
Gallons of water in the dorm room =7391 gallons
Explanation:
Given:
Amount of rainfall = 52 inches
Area of the room = 228 ft^2
To determine:
The gallons of water in the room
Calculation:
Convert area of room from ft^2 to inches^2
1 foot = 12 inches
Therefore, [tex]1 ft^{2} = (12\ in)^{2} = 144\ in^{2}[/tex]
Area of room is:
[tex]\frac{228ft^{2}*144in^{2}}{1ft^{2} } =32832in^{2}[/tex]
Volume of water in the room is:
[tex]=Area\ of\ room * Amount\ of\ rainfall\\\\= 32832 in^{2} * 52\ in = 1707264\ in^{3}[/tex]
Convert from in^3 to gallons:
1 gallon = 231 in^3
Therefore:
[tex]\frac{1707264in^{3} * 1 gallon}{231in^{3}} =7391 gallons[/tex]
Compare mechanical energy and thermal
energy.
Answer:
Explanation:
Mechanical and thermal energy are both different forms of energy. They can be converted from one to another. Some systems relies solely on this form of energy conversion between these types of interactions.
Mechanical energy is a form of energy that is due to the motion of a body.
Thermal energy is due to the temperature changes between bodies.
Both forms of energy are not related but they can be converted from one from to anther.
According to the following reaction, what volume of 0.244 M KCl solution is required to react exactly with 50.0 mL of 0.210 M Pb(NO3)2 solution? 2 KCl(aq) + Pb(NO3)2(aq) → PbCl2(s) + 2 KNO3(aq)
Answer:
86 mL
Explanation:
First find the moles of Pb (NO3)2
n=cv
where
c ( concentration)= 0.210 M
v ( volume in L) =0.05
n= 0.210 × 0.05
n= 0.0105
Using the mole ratio, we can find the moles of KCl by multiplying by 2
n (KCl) =0.0105 ×2
=0.021
v (KCl)= n/ c
= 0.021/ 0.244
=0.08606557377
=0.086 L
= 86 mL
Answer:
The volume of 0.244 M KCl solution is required 86.07 mL.
Explanation:
[tex]Concentration=\frac{Moles}{Volume (L)}[/tex]
Moles of lead nitrate in 50.0 mL of 0.210 M solution be n.
Molarity of the lead nitrate solution = 0.210 M
Volume of the solution = 50.0 mL = 0.050 L ( 1 mL = 0.001 L)
[tex]0.210 M=\frac{n}{0.050 L}[/tex]
[tex]n=0.210 M\times 0.050 L=0.0105 mol[/tex]
According to reaction given, 1 mole of lead nitrate reacts with 2 moles of KCl.
Then 0.0105 moles of lead nitrate will react with:
[tex]\frac{2}{1}\times 0.0105 mol=0.021 mol[/tex] of KCl
Moles of KCl = 0.021 mol
Volume of KCl solution = V
Molarity of the KCl solution = 0.244 M
[tex]0.244 M=\frac{0.021 mol}{V}[/tex]
[tex]V=\frac{0.021 mol}{0.244 M}=0.08607 L = 86.07 mL[/tex]
The volume of 0.244 M KCl solution is required 86.07 mL.
Who discovered the electron and what instrument did he use?
Answer:J.J. Thomson, he was using a high-vacuum cathode-ray tube
Explanation:(I Googled it)
J.J. Thomson discovered the electron in 1897 using a cathode ray tube.
The discovery of the electron is attributed to the English physicist J.J. Thomson in 1897 through his groundbreaking work with the cathode ray tube. A cathode ray tube operates by passing an electric current through gases at low pressure, forming a glowing beam or cathode ray from the negatively charged cathode to the positively charged anode. Thomson's experiments demonstrated that these rays consisted of negatively charged particles, later named electrons, indicating that atoms were not indivisible as previously thought but composed of smaller subatomic particles. This realization marked a pivotal moment in the understanding of atomic structure, disproving the notion that the atom was the smallest unit of matter.
A substance contains an arrangement of different types of atoms joined together by chemical bonds. Which of the following classes of substances could this describe?
A) all matter
B) all elements
C) all compounds
D) all pure substances
Answer:
The correct classification of the statement is all compounds.
Explanation:
All matter is defined as something that entirely has weight and occupies some sought of space. That's why it can't be used to describe the above statement.All elements are defined as substances that have an equal number of protons. The atoms in an element contain an exact atomic number.All compounds can be defined as a formation that takes place when a variety of atoms are chemically combined. Hence, this explains the answer above.All pure substances mean that the substance is not mixed with anything at all. It's just by itself.Which is the frequency of the wave shown?
Answer:
The frequency of wave is 0.125 Hz.
Explanation:
Frequency:
"It is an event repeat itself in a given period of time"
The unit of frequency is the Hz . If time is measured in seconds then frequency will be in Hz. Hz is equal to the per second.
Formula:
f = 1/ T
f = 1/ 8 sec
f = 0.125 Hz
b. Write the formula for density.
Density is mass divided by volume
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Answer and Explanation:
[tex]\huge\boxed{Density=\frac{mass}{volume}}[/tex]
That's the formula ↑
For a 20-gram mass that takes up a volume of 5 cubic centimeters:
[tex]density[/tex] [tex]is=\frac{20}{5} gm/cm^{3}[/tex]
[tex]=4gm/cm^3[/tex]
Which phrase best discribes wave motion
Answer:
any sound really do you have a multiple choice answer
Explanation:
Answer:
we need some more answer so we can answer them
‘By using displacement reactions it is possible to deduce the order of reactivity of the halogens.’
Discuss this statement with reference to the elements bromine, iodine and chlorine only.
Answer:
Explanation:
The halogens have seven electrons in their outermost shell. Each halogen atom lacks a single electron to make their octet a complete one. Elements in the halogen group are univalent and also acceptors of electrons. They are all non-metals and oxidizing agents. The oxidizing power of the halogens decreases from top to down the group. This is why the more powerful halogens displaces a less powerful one from simple salts.
Cl₂ + 2KBr → 2KCl + Br₂
Cl₂ + 2KI → 2KCl + I₂
Br₂ + 2KI → 2KBr + I₂
I₂ + 2KCl → No reaction
Final answer:
By using displacement reactions, we can deduce the reactivity order of halogens. A more reactive halogen displaces a less reactive one in compounds, and the reactivity order is [tex]F2 > Cl2 > Br2 > I2,[/tex] indicating chlorine is more reactive than both bromine and iodine.
Explanation:
Displacement reactions among halogens indeed allow us to determine their order of reactivity. When a more reactive halogen, like chlorine, reacts with the salt of a less reactive halogen, such as iodide, it displaces the less reactive halogen from its compound. The order of reactivity for halogens is fluorine, chlorine, bromine, and then iodine, with fluorine being the most reactive and iodine being the least. The reaction between chlorine and potassium iodide, which results in the displacement of iodine, can be written as:
[tex]Cl2 (g) + 2KI (aq) -- > 2KCl (aq) + I2 (s)[/tex]
In this reaction, chlorine oxidizes the iodide ions to elemental iodine and is itself reduced. This shows that chlorine is more reactive than iodine. Similar displacement reactions can be set up to compare the reactivity of bromine and iodine or chlorine and bromine, following the principle that a more reactive halogen will displace a less reactive halogen from its compounds.
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Carl creates the model of a diamond shown below. His model shows atoms of carbon in a crystalline structure. What can Carl determine about diamonds using his model?
Group of answer choices
A diamond is a mixture because it is made of compounds.
A diamond is an impure substance because it made of mixtures.
A diamond is a pure substance because it is made of one element.
A diamond is a mixture because it is made of elements.
(here is the pic)
Answer:
A diamond is a pure substance because it is made of one element.
Explanation:
From the crystalline structure model of the diamond, we can see that we only have just one element represented by the green balls connected in a cross linked fashion to one another. Therefore, one can rightly conclude that this is a pure substance made up of one element.
In a pure substance, all parts are homogeneous and composition is definite.
33. According to the law of conservation of mass,
when is mass conserved?
Answer:
that mass in an isolated system is neither created nor destroyed by chemical reactions or physical transformations. According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.
Explanation:
According to the law of conservation of mass, mass can only be conserved in an isolated system.
Recall:
The law of conservation of mass states that mass can neither be created nor destroyed. However, it can be converted from one form to another.
In an open system, the mass may not be conserved because materials and energy are being exchanged between the system and the surrounding.
The mass may also not be conserved in a closed system because energy can be exchanged between the system and the surroundings even though materials cannot.
An isolated system does not exchange materials or energy with its surrounding. Thus, mass is only conserved when a system is in an isolated state.
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which organism does not have a tail or black hair
Please help me. ? :)
Answers and explanation:
To answer these questions you use a periodic table.
A is In because it has 49 protons and In is element number 49.
B is 27 because Co is element number 27.
C is 73 because Ta is element number 73.
D is 49 because the number of electrons in an atoms is always equal to the number of protons.
E is 56 because the atomic number of Ba is 56.
F is 54 because 56 - 54 = 2. The charge is equal to the number of protons minus the number of electrons.
G is 66. The number of neutrons is equal to the atomic mass minus the number of protons. 115 - 49 = 66.
H is 108 because 181 - 73 = 108.
I is 32. The atomic mass of an element is equal to the amount of protons plus the amount of neutrons. So 16 + 16 = 32.
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The energy to form plasma comes from which of the following sources?
The movement of particles
Attractive forces between particles
The shape of the plasma
Heat or electricity in the atmosphere
Heat or electricity in the atmosphere
Answer:
Option (4)
Explanation:
The Plasma is formed when a gas is heated and becomes very hot. Due to this heating of gas, the atoms within the gas acquires a huge amount of energy. This energy facilitates the electrons to get eliminated from its nucleus of the gas atoms.
In simple words, plasma is defined as the ionized gas.
These plasma forms more than 99% of the universe that is visible to us. At night, these plasma appears to shine in the form of nebula, stars and auroras that is formed in the atmosphere of both the poles.
Thus, the plasma are formed due to heating or electricity in the atmosphere.
Hence, the correct answer is option (4).
2. Now look at the segment of the graph between the two data points marked with black squares. Describe how the boiling point and melting point plots behave between these points. Be as specific as possible.
Answer:
The given graph in the question shows relation between melting point and boiling point of the given substance.
Explanation:
The above given graph shows Direct proportionality between melting point and boiling point that is with the decreasing of melting point, the boiling point is also decreasing. Hence the proportionality is shown between the two temperatures of boiling and melting in the given graph.
Q6.The manufacturer supplying concentrated ethanoic acid for the production of vinegar als
supplied other acids. The label had come off a batch of one of these other acids.
A sample of this unknown acid was analysed and found to contain 54.5% of carbon and 9.10% OL
hydrogen by mass, the remainder being oxygen.
CHO
(a)
Use these data to calculate the empirical formula of the unknown acid.
Show your working.
The problem gives us the percentages for carbon and hydrogen in the unknown acid:
54.5 % carbon
9.10 % hydrogen
The difference until 100 % is oxygen:
36.4 % oxygen
Now we may calculate the empirical formula of the unknown acid:
First we divide each percentage by the atomic mass of each component:
carbon = 54.5 / 12 = 4.54
hydrogen = 9.1 / 1 = 9.1
oxygen = 36.4 / 16 = 2.28
Now we divide the answers to the smallest number, which is 2.28:
carbon = 4.54 / 2.28 = 2
hydrogen = 9.1 / 2.28 = 4
oxygen = 2.28 / 2.28 = 1
Now the empirical formula for the acid will be:
C₂H₄O₁
And molecular formula:
(C₂H₄O₁)ₓ , but here we do not have enough information to determine unknown "x".
• How does convection drive plate movement?
Answer:Convection currents drive the movement of Earth's rigid tectonic plates in the planet's fluid molten mantle. In places where convection currents rise up towards the crust's surface, tectonic plates move away from each other in a process known as seafloor spreading (Fig. 7.21).
Explanation:
Convection drives plate movement because of high convection current on the Earth’s core. It makes molten rocks to move in molten layer.
Explanation:
In the aesthenosphere, high convection currents pass heat on the surface, where less dense magma leaves break down plates in distribution centres and create different plate boundaries.
When the plate moves away from the propagation centres, they also cool down to higher-density rocks, which are part of the oceanic crust consumed in ocean subduction areas. Then, the crust returns to aesthenosphere.
Generally, the heat generated by the radioactive decomposition of elements deeper in the Earth produces magma (molten rock) in aesthenosphere. It (70 to 250 km) is a part of mantle, the central globe, extending over 2,900 km.