Answer:
The theory of seafloor spreading explains how new crust is created at mid-ocean ridges.
Explanation:
This theory proposes that the Earth's crust is made up of tectonic plates that move and spread apart from each other, allowing molten material from the mantle to rise up and fill the gap, forming new crust. This process of plate tectonics also explains the formation of mountain ranges, volcanoes, and earthquakes.
During photosynthesis, all plants make the same kind of sugar? true or false
Sugar concentrations vary across a plant's many components. Concentration gradients are the results of these various concentrations. To sugars to specific cells or locations, increase concentration gradients,
The state is false
What kind of sugar are plants able to produce?The amount of sugars in various plant sections varies. Gradients of concentration are created by these various concentrations. Plants must employ proton pumps to transport sugars up concentration gradients to specific locations or cells; many of these pumps need phosphorus or other enzymes to function.
To produce sugar, do all plants employ photosynthesis?Instead, plants produce glucose, a type of sugar that they require to thrive, using sunshine, water, and gases from the atmosphere. All vegetation, algae, and some microbes engage in this activity, which is known as photosynthesis.
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A throwback to the six periods of music and evaluate how its development affected modern music. “
Medieval, Renaissance, Baroque, Classical, Romantic, and 20th/21st Century are the six musical eras, with each roughly corresponding to a specific time period.
Explain about the modern music?Electronic drums, electric guitars, and other contemporary instruments are considerably more frequently used in modern music. Modern compositions emphasizes the use of novel or formerly reserved for classical music instruments in an effort to make them "cool" and increase audience appeal.
Modernism in music is an aesthetic position that underlies the period of change and development in musical language that took place around the turn of the 20th century. During this time, there were many responses to challenging and reinterpreting older categories of music, as well as innovations that led to new ways of organizing and approaching.
The terms popular music and pop music are sometimes used synonymously, despite the fact that the former refers to all music that is popular and encompasses a wide range of different genres.
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a prescription medication requires 8.50 mg per kg of body weight convert this quantity to the number of grams required per pound of body weight
The number of grams required per pound of body weight, given the kg requirement, is 0.00385714 g per pound of body weigh.
How to find the number of grams required ?To convert the dosage of 8.50 mg per kg of body weight to the number of grams per pound of body weight, you would first need to convert kg to lbs. 1 kg is equal to 2.20462 lbs. So, you would divide the dosage of 8.50 mg by 2.20462 to get the dosage in mg per pound of body weight.
= 8.50 mg / 2.20462
= 3.85714 mg/lb
To convert mg to g, we know that 1g = 1, 000mg. So we can divide 3.85714 mg/lb by 1000 to get the dosage in grams per pound
= 3.85714 mg/lb / 1000
= 0.00385714 g/lb
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Which molecule will engage in the strongest dispersion forces? Select the correct answer below: CF4 O CCL CBra CL
The molecule that will engage in the strongest dispersion forces is CL.
Dispersion forces, also known as London forces, are the weakest type of intermolecular forces and exist between all types of molecules.
They arise from the momentary fluctuations of electron density in a molecule, which creates temporary dipoles. These temporary dipoles then interact with each other and result in attractive forces between the molecules.
Dispersion forces are important in determining the physical properties of substances, such as boiling and melting points, and are responsible for the cohesive properties of nonpolar liquids and solids.
The strength of dispersion forces depends on the size and polarizability of the molecule.
The larger and more polarizable the molecule, the stronger the dispersion forces will be. Among the molecules listed, CL has the largest size and is the most polarizable, leading to the strongest dispersion forces.
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The monomer of a polymer has two ‘double bonds’. Empirical formula of the monomer is
C4H6. Write down the structure of the monomer. If the Polymer molecular weight is 108000,
what will be the ‘Degree of Polymerization’ of the polymer.
The structure of the monomer with empirical formula C4H6 and two double bonds can be represented as follows:
H2C=CH-CH=CH2
The degree of polymerization (DP) is defined as the number of monomer units in a polymer chain. If the polymer molecular weight is 108000, the DP can be calculated as follows:
DP = Molecular weight of polymer / Molecular weight of monomer
DP = 108000 / (12 + 6 + 14)
DP = 108000 / 32
DP = 3375
Therefore, the degree of polymerization of the polymer is 3375.
2A+3B⟶4Y+5Z how many moles of Z with excess B
1.10 mol A
The relationship of ___ production and ___ ____ consumption provides a straightforward way to measure primary productivity. The answers are two different gases.
The relationship of oxygen production and carbon dioxide consumption provides a straightforward way to measure primary productivity.
In ecology, primary productivity is the rate at which energy is converted to organic substances to obtain energy. There are two ways to do the conversion: photosynthetic producers obtain energy and nutrients by harnessing sunlight, while chemosynthetic producers obtain chemical energy through oxidation.
Primary productivity is generally calculated and determined by measuring the output of oxygen or the uptake of carbon dioxide. The rate of production is expressed by grams of organic carbon, per unit area, per unit of time.
Net primary productivity is the amount of organic material produced that can be used by consumers.
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Suppose that unstable isotope A has a half life of 40 days and decays into the stable isotope B. If 120,000 atoms of isotope A were prepared, how many atoms of isotope B will be present once 120 days have passed?
Answer:
Below
Explanation:
120 days = 3 half lives of 40 days
so the count of A will go 120 000 ==> 60 000==> 30 000==> 15 000
the isotope A that changed to B is then:
120 000 - 15000 = B count = 105 000
Intramolecular forces act ______, while intermolecular forces act ______.between atoms in a molecule; between molecules in a sample
Intramolecular forces act between atoms in a molecule while intermolecular forces act between molecules in a sample..
Intramolecular forces are the forces that hold atoms together within a molecule. Intermolecular forces are forces that exist between molecules. The intramolecular forces binds together the atoms making up a molecule or compound. Intermolecular forces which are the forces present between molecules. The Chemical bonds are considered to be intramolecular forces which are stronger than intermolecular forces present between non-bonding atoms or molecules. Basically, Intramolecular forces holds atoms together within a molecule and Intermolecular forces are forces that exist between molecules.
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The temperature above which a substance cannot exist as a liquid but behaves as a gas regardless of the pressure upon it is the CRITICAL TEMPERATURE.
The temperatures and pressures when the liquid and gaseous phases are equally stable and in equilibrium.
The temperature range and pressure range at which a supercritical fluid can exist. The physical states of a substance at various pressure and temperature levels are depicted in a phase diagram. In this diagram, the pressure is often depicted on the y-axis while the temperature is displayed on the x-axis. The critical point, which is where the line separating the liquid and gaseous phases disappears, is depicted graphically. A substance that has passed the critical point is referred to as a supercritical fluid. Based on the description provided above, all responses other than A are false. The flexibility to alter fluid density-directly affecting extraction parameters like temperature and pressure.
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Consider the elements, listed, found in the human body.
Which two are major components, making up at least 3% each of the human body?
- magnesium
- nitrogen
- oxygen
- selenium
- cobalt
How many single covalent bonds does each element generally form? Enter your answers as numerals; for example, 7.
carbon:
hydrogen:
The two major components making up at least 3% each of the human body are magnesium and nitrogen.
Magnesium makes up about 2.4% of the body, while nitrogen makes up about 3.2%. Oxygen, selenium, and cobalt make up smaller percentages of the body, with oxygen making up about 65%, selenium making up 0.19%, and cobalt making up 0.0012%.
Covalent bonds of each element:Carbon usually forms four single covalent bonds, while hydrogen typically forms one single covalent bond. Therefore, the answer for carbon:hydrogen is 4:1.
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What is the equilibrium concentration of O2(g) of the following reaction?
2SO2(g) + O2(g) ⇌ 2SO3(g)
The equilibrium concentration of SO2(g) is 2.00 M and SO3(g) is 10.0 M. The equilibrium constant is 800.4.
Answer:
The equilibrium concentration of O2(g) in the reaction 2SO2(g) + O2(g) ⇌ 2SO3(g) can be determined by solving the equilibrium expression. The equilibrium constant is given as 800.4, and the concentration of SO2(g) and SO3(g) are 2.00 M and 10.0 M, respectively. Using the equilibrium expression, K = [SO3]2/[SO2]2[O2], the equilibrium concentration of O2(g) would be 0.016 M.
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Evaporation of water molecules occurs from water:
Question 8 options:
when the average temperature is 100 degrees Celsius
when one calorie of energy is added to 1 gram of water
when 580 calories of energy are added to 1 gram of water
when water is at room temperature
in all of the conditions listed above
Answer:
In a gas, they move around wildly and have a great deal of space between them. In the water cycle, evaporation occurs when sunlight warms the surface of the water. The heat from the sun makes the water molecules move faster and faster, until they move so fast they escape as a gas
What is parts per billion
Answer:
Parts per billion (ppb) is a unit of measurement used to express very low concentrations of a substance. It is equivalent to one part of a substance per billion parts of a whole, or one microgram per liter (μg/L) in the case of a liquid solution. For example, if a water sample contains 1 ppb of a certain chemical, it means that there is one microgram of that chemical per liter of water. It is often used in environmental monitoring to measure the levels of pollutants in air, water, and soil.
Explanation:
Please answer my question.
Number of sigma bond is 4, number of pi bond is 4 and hybridisation of carbon is sp³. A bond, also known as a chemical bond, is a connection between the atoms of molecules.
What is bond?A bond, also known as a chemical bond, is a connection between the atoms of molecules, compounds, and the ions and molecules of crystals. An attraction that persists over time between two atoms, molecules, or ions is referred to as a bond.
Most bonding behavior may be described by the attraction of two electrical charges that are in opposition to one another. An atom's or ion's electrons are drawn to both its own positively charged nucleus, which contains protons, and the nuclei of other adjacent atoms.
number of sigma bond =4
number of pi bond =4
hybridisation of carbon= sp³
Therefore, in above given ways blanks can be filled.
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The masses for two elements, carbon, and hydrogen, were analyzed in four separate samples, shown in the table above. In which
sample would the empirical formula be C₂H₂?
Simply demonstrating the components of a molecule using the empirical formula is common practice.
How do we find empirical formula?Simply demonstrating the components of a molecule using the empirical formula is common practice.When one wants to see all of the elements they are dealing with at once, this is helpful.Equation of Evidence.Transform each element's mass into a mole by using the periodic table's molar mass.The lowest calculated number of moles is multiplied by each mole value.Closest entire number is rounded up.The empirical formula indicates this by using subscripts, and it is the elements' mole ratio.The empirical formula is the most basic formula for a compound and is defined as the ratio of subscripts of the fewest number of parts in the formula that may be expressed as a whole.
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Based on the information given above, which of the following is the expression for Keq for the reaction that occurs when a 0.1MAgNO3(aq) is added to a saturated solution of PbCl2(aq), as represented by the following chemical equation?
The expression for Keq for the reaction is 0.25
The expression for Keq represents the relative concentrations of the products and reactants in a chemical reaction at a given temperature and pressure. To calculate Keq, one must first balance the chemical equation for the reaction and then determine the concentrations of all species involved in the reaction at equilibrium.
In this case, the balanced chemical equation for the reaction between 0.1 M AgNO3 and a saturated solution of PbCl2 is
AgNO3(aq) + PbCl2(aq) ⇌ AgCl(s) + Pb(NO3)2(aq)
At 25°C, the initial concentrations of AgNO3 and PbCl2 are 0.1 M and unknown, respectively. The reaction is performed by mixing 50 mL of 0.1 M AgNO3 with 50 mL of a saturated solution of PbCl2, so the final volume of the solution is 100 mL.
Once the reaction has reached equilibrium, the concentration of AgCl can be measured and the concentration of Pb(NO3)2 can be calculated using the stoichiometry of the balanced chemical equation. With these values, the expression for Keq can be calculated using the following formula:
Keq = [AgCl] [Pb(NO3)2] / [AgNO3] [PbCl2]
Where [AgCl], [Pb(NO3)2], [AgNO3], and [PbCl2] represent the concentrations of AgCl, Pb(NO3)2, AgNO3, and PbCl2 at equilibrium, respectively.
Given the concentration values, the expression for Keq can be calculated using the following formula:
Keq = [AgCl] [Pb(NO3)2] / [AgNO3] [PbCl2]
Plugging in the given values:
Keq = 0.05 M * 0.03 M / (0.1 M * 0.06 M)
= 0.25
Therefore, the expression for Keq for the reaction is 0.25.
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The selection is 1-10
The number that would be written in front of water in the formula Fe(C2H3O2)2.xH2O is x = 0.036056.
What is moles?A mole, often represented by the symbol "mol," is a unit of measurement for the amount of a substance. It is defined as the amount of a substance that contains the same number of entities (such as atoms, molecules, or ions) as there are in 12 grams of pure carbon-12.
From the given data, we know that the hydrate is Fe(C2H3O2)2.xH2O and the anhydrate is Fe(C2H3O2)2.
We know that when the hydrate loses water, the mass of the anhydrate (Fe(C2H3O2)2) should be equal to the mass of the hydrate minus the mass of the water lost. This means:
mass of anhydrate = mass of hydrate - mass of water lost
We know that the mass of hydrate is 9.13g and the mass of water lost is 1.58g. So,
mass of anhydrate = 9.13g - 1.58g = 7.55g
We know the molar mass of Fe(C2H3O2)2 is 208.03 g/mol
number of moles of anhydrate = mass of anhydrate / molar mass of anhydrate
number of moles of anhydrate = 7.55g / 208.03 g/mol = 0.036056 mol
We know that number of moles of water = number of moles of anhydrate, x represents the number of moles of water present in hydrate.
so x = 0.036056 mol
Therefore, the number that would be written in front of water in the formula Fe(C2H3O2)2.xH2O is x = 0.036056.
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Look at Position B on the map. Sometimes the line doesn't have an elevation
written near it, or the elevation is written somewhere else on the line (follow
around). If the line is darker than the other lines, it is called an index line.
The thickest contour lines are called index lines, and they are often numbered at some point along their length.
An index line is what?Index lines, which are the thickest contour lines, are frequently numbered along their length. The height above sea level is seen from this. 2. The thinner, more frequent intermediate lines are located between the index lines.
A curve that connects points of equal value and along which the function has a constant value is called a contour line for a two-variable function. In the three-dimensional graph of the function f, it is a section of the plane.
A contour line is a line drawn to indicate a dip or elevation of the ground on a topographic map. A contour interval is the vertical distance or elevation difference between two contour lines.
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The iodide ion reacts with hypochlorite ion (the active ingredient in chlorine bleaches) in the following way:
OCl−+I−→OI−+Cl− .
This rapid reaction gives the following rate data:
[OCl−](M) [I]−(M) Rate (M/s)
1.5×10−3 1.5×10−3 1.36×10−4
3.0×10−3 1.5×10−3 2.72×10−4
1.5×10−3 3.0×10−3 2.72×10−4
Part A
Write the rate law for this reaction.
Write the rate law for this reaction.
rate=k[OCl−]2[I−]
rate= k[I−]
rate= k[OCl−]
rate= k[OCl−][I−]
Part B
Calculate the rate constant with proper units.
Express your answer using two significant figures.
k = M−1s−1
Part C
Calculate the rate when [OCl−]= 2.1×10−3 M and [I−]= 5.6×10−4 M .
Express your answer using two significant figures.
rate = M/s =
A) rate = k[OCl^-]^2[I^-]
B) To calculate the rate constant, you can use the rate data from the experiment and rearrange the rate law.
rate = k[OCl^-]^2[I^-]
k = rate / [OCl^-]^2[I^-]
Taking one of the data points, k = 1.36 × 10^-4 / (1.5 × 10^-3)^2 (1.5 × 10^-3) = 3.07 × 10^3 M^-1s^-1
C) Using the rate law and the rate constant, the rate can be calculated when [OCl^-]= 2.1 × 10^-3 M and [I^-]= 5.6 × 10^-4 M.
rate = k[OCl^-]^2[I^-] = 3.07 × 10^3 (2.1 × 10^-3)^2 (5.6 × 10^-4) = 2.84 × 10^-4 M/s
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The metal zinc becomes superconducting at temperatures below 8675 mK. Calculate the temperature at which zinc becomes superconducting in degrees celsius. Round your answer to decimal places.
Zinc becomes superconducting at a temperature of approximately 31.75°C.
Superconductivity is a phenomenon where some materials exhibit zero electrical resistance and perfect diamagnetism (exclusion of magnetic fields) at low temperatures.
The temperature at which a material becomes superconducting is known as its critical temperature.
The conversion factor from millikelvin to Celsius is as follows:
1 mK = 1°C/273.15
The temperature at which zinc becomes superconducting in millikelvin is 8675 mK, so the temperature in degrees Celsius can be calculated as :
8675 mK * (1°C/273.15) = 31.75°C (rounded to 2 decimal places).
So, zinc becomes superconducting at a temperature of approximately 31.75°C.
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To obtain pure lead, lead (II) sulfide is burned in an atmosphere of pure oxygen. The products of the reaction are lead and sulfur trioxide (SO3). Write a balanced chemical equation for this process.
The chemical formula for the reaction is 2PbS + 3O₂ ⟶ 2Pb + 2SO₃, which is balanced equation. Lead (II) sulfide is burned in a pure oxygen environment to produce pure lead.
How may an equation be balanced?To verify that the equation is accurate, we count the atoms of each element on both sides of the equation. This equation is now balanced since such concentration of atoms found in each element on both edges is now equal.
A chemical equation's balance can be determined in what ways?The total number of atoms of each element on the reactant and product sides are then compared once more after all the different aspects have been harmonized. In the absence of differences, the chemical equation is said to be balanced.
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for the following elements write the electron configurations and the shorthand notation configuration and the orbital notations. 1. al 2. na 3. ca 4. zr 5. ga 6. as 7. bi 8. hg 9. co 10. pt 11. br 12. rn 13. ra 14. ne 15. he 16. b 17. c 18. f 19. mn 20. ru 21. u 22. w 23. v 24. ba 25. mg
The electron configuration for each element is:
Al: [He] 2s2 2p6, [He]2s2 2p6; 1s2 2s2 2p6 3s2 3p1Na: [Ne] 3s1, [Ne]3s1; 1s2 2s2 2p6 3s1Ca: [Ar] 4s2, [Ar]4s2; 1s2 2s2 2p6 3s2 3p6 4s2Zr: [Kr] 5s2 4d2, [Kr]5s2 4d2; 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d2Ga: [Ar] 3d10 4s2 4p1, [Ar]3d10 4s2 4p1; 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p1As: [Ar] 3d10 4s2 4p3, [Ar]3d10 4s2 4p3; 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p3Bi: [Xe] 4f14 5d10 6s2 6p3, [Xe]4f14 5d10 6s2 6p3; 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d10 6s2 6p3Hg: [Xe] 4f14 5d10 6s2 6p2, [Xe]4f14 5d10 6s2 6p2; 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 4f14 5d10 6s2 6p2Co: [Ar] 3d7 4s2, [Ar]3d7 4s2; 1s2 2s2 2p6 3s2 3p6 4s2 3d7Pt: [Xe] 4f14 5d9 6s1,The electron configuration of an atom is the arrangement of electrons in its atomic orbitals. This arrangement is determined by the number of protons in the atom's nucleus and the energy levels of the electrons.
Electron configurations describe the distribution of electrons in the orbitals of an atom and are used to predict chemical properties and the behavior of atoms in a molecule. Electron configurations can be written in several ways, such as the condensed version, the noble gas core version, or the orbital filling version.
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which of the following is not the correct chemical formula for the compound named? group of answer choices beryllium oxide, be2o ammonium chloride, nh4cl hydrobromic acid, hbr(aq) copper(i) fluoride, cuf calcium sulfate, caso4
The incorrect chemical formula is "be2o" for beryllium oxide. The correct formula is "BeO".
How are elements represented?In chemical formulas, the elements are represented by their chemical symbols, which are abbreviations for the element name.
The chemical symbol for beryllium is "Be", and the symbol for oxygen is "O".
Therefore, the chemical formula for beryllium oxide is "BeO". "be2o" is not a valid chemical formula as it does not follow the standard notation of using the chemical symbols for the elements in a compound.
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How many moles of gas occupy 157L at a pressure of 4.6 atm and a temperature of 471K?
Answer:
Approximately 10 moles of gas.
Explanation:
Ideal Gas Law = PV=nRT
n = (PV) / (RT)
n = (4.6 atm * 157 L) / (0.0821 Latm/mol-K * 471 K)
n = approximately 10 moles of gas.
would you expect the following compound to have a dipole moment? if the molecule has a dipole moment, specify its direction. select the single best answer. ch3cl the dipole moment is oriented from the h atoms towards the cl atom. the dipole moment is oriented from the cl atom towards the h atoms. one specific direction of the dipole moment does not exist. the molecule has no dipole moment.
The compound CH3Cl would be expected to have a dipole moment. And its direction is specified as: C: "The molecule CH3Cl has a dipole moment oriented from the Cl atom towards the H atoms".
A dipole moment occurs when there is a separation of electrical charge within a molecule. In the case of CH3Cl, the Cl atom has a higher electronegativity than the H atoms, so it attracts electrons more strongly. This creates a partial positive charge on the H atoms and a partial negative charge on the Cl atom, resulting in a net dipole moment oriented from the Cl atom to the H atoms.
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draw a complete lewis structure (include all lone pairs and multiple bonds) for histidine [c6h9n3o2]
Histidine contains a amino group and a carboxylic acid group in its backbone and have an imidazole functional group in its side chain.
Histidine is classified as a semi essential amino acid needed in humans for growth and tissue repair. It plays a important role in immunity, gastric secretion. It is required for blood cell manufacture and protects tissues against damage caused by radiation and heavy metals. It is an alpha amino acid with an imidazole functional group. It forms complexes with many metal ions. It is a basic amino acid used to make up proteins in living things. Histidine plays important roles in the active site of enzymes such as serine proteases where it is a member of the catalytic triad. Excess of histidine converted to trans-urocanate by histidine ammonia lyase in liver and skin.
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List the hierarchical organization levels from smallest to largest
Atomic, cell, tissue, organ, organ of the body, and animal levels were its six organisational levels, given in order of large to least. begin with the tiny atoms & end with the greatest macromolecules in a biota.
What four primary macromolecules are there?These include lipids (sometimes known as fats), proteins, & nucleic acids. In that they are enormous polymers constructed from little repeating monomer subunits, all of the main macromolecule classes have this in common.
What is a macromolecule, exactly?macromolecule, any extremely big molecule, often having a diameter between 100 and 10,000 angstroms (10-5 to 10-3 mm). The substance's smallest unit that yet has its distinctive features is called a molecule.
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how does electrolysis of hcl in water work?
Answer:
it cleans water and kills the germs
In naming a binary molecular compound, the number of atoms of each element present in the molecule is indicated by ____.
prefixes
The number of atoms of each element in a compound can be indicated by the number written on each element.
Determine the number of atomsSteps to calculate the number of atoms:
The number after the element symbol: indicates the number of atoms written after the element symbol in subscript format (small number below) H₃PO₄, atomic number 8The number after the brackets: indicates the number that must be multiplied by the number of atoms in the brackets (NH₄)₂CO₃ Number of atoms = 14The numbers written before the chemical formula are not part of the chemical formula. This number indicates the number of molecules that are behind it. This number usually appears in the equation (coefficient) of a chemical reaction. This number is used in calculating the number of atoms before and after the reaction. 2 H₂O Number of atoms = 6The number written after the dot (and in front of a molecular formula) represents the number of molecules behind it. The period (.) indicates the compound is actually made up of two parts joined together. This number usually appears in the crystal water formula. CaCl₂.2 H₂O Atomic number = 9Learn more about Atom here: https://brainly.com/question/6258301
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