Carbon dioxide is a chemical compound made up of molecules that all have one carbon atom covalently double bonded to two oxygen.
What does a molecule of carbon dioxide contain?Carbon dioxide is relaxed of one carbon atom covalently bonded to two oxygen atoms. It is a gas (at standard temperature and pressure) that is expired by animals and utilized by plants during photosynthesis. Carbon dioxide, CO2, is a chemical compound claim of two oxygen atoms and one carbon atom. Carbon dioxide is a one-carbon compound with the formula CO2 in which the carbon is nuts about to each oxygen atom by a double bond. A molecule of carbon dioxide (CO2) is made up of one carbon atom and two oxygen atoms. Carbon dioxide is the main greenhouse gas that helps to trap heat.
So we can conclude that Carbon dioxide is a molecule with the molecular formula CO2. The linear molecule comprises a carbon atom that is doubly bonded to two oxygen atoms.
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in a titration, 20 ml of 0.056 m koh was titrated with 0.20 m hcl. calculate the ph of the resulting solution after the addition 0 ml of the acid? (give your answer to two decimal places)
The pH of the final product is 7.
the pH of the final mixture following the addition of 0 ml of acid is?The quantity of hydrogen and hydroxyl ions in a solution determines pH. The negative logarithm of the hydrogen ion concentration is another name for pH.
A solution's pH defines how basic and how acidic it is. It establishes how many protons have been released or given. We have the situation as it stands.
0.20 molar HCL after titrating 0.056 molar koh.
20 ml of the solution yield a pH of 7.
Consequently, the given solution's pH value is 7.
Titration is employed in quantitative tests to keep the solution's concentration constant. The balancing of volume and concentration can be distinguished by a subtle shift in color.
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How about the Neon, Argon, Oxygen and Water molecules, do they take up more space as a liquid or as a solid?
PLS HELP
The substances would take up more space as gas than as a solid.
What is the space taken up?We know that a solid has a definite shape and a definite volume. We know what the space that a solid is going to occupy is because the space that it can occupy is fixed. This is quite important to be at the back of our minds as we discuss.
A gas does not take up a definite space. We know that a gas does take up the volume of the object thus we can be bold to say that the gas is going to take up more space than the solid in all the cases.
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Determine the freezing point of a solution that contains 78. 8 g of naphthalene (C10H8, molar mass = 128. 16 g/mol) dissolved in 722 mL of benzene (d = 0. 877 g/mL). Pure benzene has a melting point of 5. 50°C and a freezing point depression constant of 4. 90°C/m. 0. 74°C4. 76°C4. 17°C1. 68°C1. 33°C
The freezing point of a solution that contains 78. 8 g of naphthalene (C10H8, molar mass = 128.16 g/mol) dissolved in 722 mL of benzene (d = 0. 877 g/mL) is
First we need to find out the mass of benzene using volume and density. The formula of density is
density=mass×volume
Rearrange and solve for the mass of benzene
mass=density×volume
mass=0.877g×722 mL/mL
mass=633.194 g
Convert this mass in kg
633.194 g×(1 kg/1000 g)=0.633194 kg
To find freezing point of solution, first we need to find out ΔT_f which is given as
Δ(T_f)=i×(K_f)×m
Where, m-molality
i- Van't hoff factor=1 (as naphthalene is non-electrolyte)
(K_f) = 4.90°C/m
Molality is calculated using formula
molality=(moles of solute/mass of solvent)
The solute is naphthalene and its moles is
mole = 78.8 g×(1 mol/128.16 g)
=0.61486 mol
Hence, the molality of solution is
molality=(0.61486 mol/0.633194 kg)
=0.97104 mol/kg
=0.97104 m (∵m=mol/kg)
Plug all values in the formula
Δ(T_f)=1×(4.90°C/m)×0.97104 m
Δ(T_f)=4.7581°C
The another formula of Δ(T_f) is
Δ(T_f)=T_f(solvent)-T_f(solution)
Rearrange formula for T_f(solution)
T_f(solution)=T_f(solvent)-Δ(T_f)
∴T_f(solution)=(5.50-4.7581)°C
∴T_f(solution)=0.7419°C
T_f(solution)=0.74°C
Therefore, the freezing point of a solution is 0.74°C.
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co3 forms a more stable complex with the chelating ligand en (h2nch2ch2nh2) than it does with the monodentate ligand methylamine (ch3nh2). what is the reason that [co(en)3]3 is more stable than [co(ch3nh2)6]3 ?
[CO(en)₃]³⁺ is more stable than [CO(CH₃NH₂)]³⁺ to make more stable complex because of chelate effect.
[CO(en)₃]³⁺ is a metal chelate due to presece of bidentate ligand ethylene diamine ligand. Metal chelates are more stable than complexes containing only monodentate ligands because of the chelate effect, we expect ethylenediamine to form a stronger complex with Co than ammonia.
The Chelate Effect is that complexes resulting from coordination with the chelating ligand is much more thermodynamically stable than complexes with non-chelating ligands.
The chelate effect defined as the augmented affinity of chelating ligands for any metalic ion in comparison of the affinity of a similar nonchelating ligands for the same metallic ion.
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imagine you can treat heat as a reactant or a product of a reaction. what do the observations about the temperature dependence in parts c and d tell you about the change in these two reactions. i.e. is heat a product or a reactant for these reactions, and what does that say about whether they are endo or exothermic?
If heat is supplied to the reaction, it is endothermic reaction. If heat is evolved during a reaction it is called exothermic reaction.
What is exothermic reaction?In every chemical process, energy is involved. When new bonds form in products, energy is produced. Energy is used to break bonds in reactants.
When new bonds form in the products of some chemical reactions, known as endothermic reactions, less energy is released than is required to break bonds in the reactants.
Exothermic reactions work the other way around. It requires less energy to break bonds in the reactants than is produced when new bonds form in the products in an exothermic reaction.
Exothermic reactions characterize all combustion processes. A substance burns when it reacts with oxygen in a combustion reaction. Burning materials often release energy in the form of heat and light.
Therefore, If heat is supplied to the reaction, it is endothermic reaction. If heat is evolved during a reaction it is called exothermic reaction.
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q9 (1pts) which of the following substances will display an incomplete octet in its lewis structure? a) co2 b) cl2 c) icl d) no e) so2
No substance's Lewis structure will ever show an unfinished octet.
How to find out incomplete octet?With fewer than eight valence electrons, certain atoms of specified elements can form stable bonds. When this occurs, the atom of the element included in the molecule is thought to retain a partial octet.
Boron, aluminum, beryllium, and hydrogen are typical examples of these elements, all of which are stable with just two valence electrons (stable with only 6 valence electrons). For all other periods below period 1, this is comparable to the octet rule, with the exception of hydrogen, where a noble gas structure should be assigned two valence electrons instead (like He).
The valence electrons in stable compounds that do not have a noble gas structure can be produced by covalent compounds in groups 2 and 3.
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What is the empirical formula of a substance that contains 2. 64 g of c and 0. 444 g of h?.
The empirical formula for the compound is CH₂
The empirical formulaThe empirical formula is a formula that states the ratio of the number of elements that make up the simplest molecule. While the molecular formula is the actual formula that states the number of elements that make up a molecule.
Calculated the number of moles of different atoms.
Number of moles of Carbon:
n = (given mass of carbon)/(molar mass of carbon)
= 2.64 g/12.011 gmol⁻¹
= 0.220 mol
Number of moles of Hydrogen:
(given mass of hydrogen)/(molar mass of hydrogen)
= 0.444 g/1.008 gmol⁻¹
= 0.440 mol
Ratio of carbon:
= 0.220/0.220
= 1
Ratio of hydrogen:
= 0.444/0.220
= 2
The ratio of C : H : O = 1 : 2
So, the empirical formula is CH₂
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Which reactant is getting reduced and which reactant is getting oxidized?
In the reaction
2Mg(s)+CO₂(g)→2MgO(s)+C(s)
The reactant which is going to oxidised is Mg(s) and the reactant which is going to reduce is CO₂(g).
Oxidation is defined as the loss of electron from the element, whereas reduction is defined as the gain of electron done by the element. When any element is present in solid form, its oxidation state is zero. Hence, the oxidation state of Mg(s) and C(s) is zero. The oxidation state of O is -2. On product side, the oxidation state of Mg is
x+(-2)=0
x-2=0
x=+2
The oxidation state of Mg is increased from zero(0) to 2. Hence, Mg(s) is oxidised.
The oxidation state of C in CO₂(g) is
x+2(-2)=0
x+(-4)=0
x-4=0
x=4
The oxidation state of C is decreased from +4 to 0. Hence, C in CO₂ is reduced in the reaction.
Therefore, the reactant which is going to oxidised is Mg(s) and the reactant which is going to reduced is CO₂(g).
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AG CHEM CLASS!! Please label the rest of the following of the dog skeleton.
The parts of dog skeleton is pelvis, femur, fibula, fibril, tarsus, metatarsus and phalange.
What is skeleton?Skeleton is defined as the structure of vertebrate creatures that supports their soft tissues and shields many of their internal organs. Ligaments keep it together, and muscles that are connected to it move it at the joints.
The axial skeleton and the appendicular skeleton are the two sections of the canine skeleton. The vertebral column and the rib cage make up the axial skeleton. The pectoral girdle/limb and the pelvic girdle/limb make up the appendicular skeleton.
Thus, the parts of dog skeleton is pelvis, femur, fibula, fibril, tarsus, metatarsus and phalange.
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which qualitative analysis test from this module can help distinguish between different kinds of ketones? can this same test give a positive result for 4-methylacetophenone? why?
Bradys test is the test used for the qualitative analysis of different types of ketones.
the name of the reagent used in the Bradys test is 2,4-dinitrophenylhydrazine.
it reacts with aldehyde and ketones to give coloured precipitate. 2,4-DNP is red in colour but when it reacts with ketone it gives an orange colour and if it reacts with carbonyl compound and aromatic compound then it gives red precipitate.
now talking about 4-methylacetophenone .yes Bradys test gives positive response to this compound.
when 4-methylacetophenone reacts with 2,4-DNP it gives red precipitate due to hydrazone formation.
bradys give positive test for ketones & aldehyde.
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1.a 1.80 l water sample is thought to contain cadmium ions. if 26.00 g cadmium phosphate (527.18 g/mol) precipitates when 77.1 ml of a 1.28 m sodium phosphate solution is added to the water sample, what is the molar concentration of cd2 in the original water sample?
In this particular problem, the molar concentration of cd2 in the original water sample 0.0822 M.
Explain how molar concentration comes 0.0822M
Considering:-
Normality= Molarity*n-factor
So, Given that:-
Molarity of Na3po4 = 1.28 M
n-factor of Na3po4 = 3
So,
Normality of Na3po4 = 3*1.28 N = 3.84 N
Considering:-
At equivalence point
Gram equivalents of Cd2+ = Gram equivalents of Na3po4
Given that:
Normality Na3po4 = 3.84N
VolumeNa3po4 = 77.1 ml
Volume cd2+ = 1800 ml
So,
Normality cd2+ * 1800 = 3.84*77.1
Normality cd2+ = 296.064/ 1800 = 0.16448N
So,.
Molarity = Normality/ n-factor
= 0.16448/ 2
= 0. 0822M
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again considering the conversion of 1 g of liquid water to 1 g water vapor, does this process add or remove heat from the surrounding environment?
The conversion of 1 g of liquid water to 1 g of water vapor, removes heat from the surrounding environment.
Water vapor, water vapor, or aqueous vapor is the gaseous section of water. it's far one state of water in the hydrosphere. Water vapor can be made out of the evaporation or boiling of liquid water or from the sublimation of ice. Water vapor is transparent, like the maximum elements of the environment.
Water vapor is water in gaseous rather than liquid form. it may be fashioned both through a technique of evaporation or sublimation. not like clouds, fog, or mist that is surely suspended debris of liquid water within the air, water vapor itself cannot be seen because it's miles in gaseous form.
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Describe the differences and similarities between the molecules of carbon monoxide, diatomic oxygen and carbon dioxide. Which two appear most alike?
Answer:
Answer:
The major similarities between molecules of carbon monoxide, diatomic oxygen and carbon dioxide is that they all exist in gaseous states in their natural forms. Each of them also have low molecular weight of less than 70g/mol.
The difference between them is that the carbon monoxide is formed from incomplete combustion and is a toxic gas while carbon dioxide is an end product of respiration and is used by plants for photosynthesis. Oxygen on the other hand is essential for respiration and is the end product of photosynthesis.
Carbon dioxide and Carbon monoxide look most alike as they have the same elements which include Carbon and Oxygen but only different in the number of atom composition
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Explanation:
Help me with this one pleaseee
what is the number of molecules of water in 34.20 gm of sugar?
The number of molecules present in 34.20 grams of sugar is 6.02*10²⁴.
Solution:
1 mole of any compound contains Avogadro's number of molecules.
Number of moles = mass/molar mass
Number of moles = 34.2/342
Number of moles = 0.1
Number of molecules in 1 mole of sugar = 6.02*10²³
Number of molecules 0.1 moles of sugar = 0.1/6.02*10²³
Number of molecules = 6.02*10²⁴
To determine the number of molecules needed first determine the molecular weight of one mole of the substance then divide the molar mass value by the molecular weight and multiply by the Avogadro constant. The molar mass of a substance is the mass of 6.022 × 1023 atomic molecular or formula units of that substance. The number of grams in a mole is always equal to the number of atomic mass units representing atomic molecular and formula masses.
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Which food group has the largest carbon footprint and requires the most water to produce?.
Food group has the largest carbon footprint and requires the most water to produce is bovine meat
The carbon footprint is the total amount of greenhouse gases that are generated by our action and the average carbon footprint for a person in the united state is 16 tons and one of the highest rates in the world and globally the average carbon footprint is closer to 14 tons and beef has the highest carbon footprint of any food and this is because of what is required to raise and farm cattle and animals used for beef production require a tremendous amount of feed and which must be grown on its own and they also produce an extremely high amount of methane and meat as well as cheese and eggs have the highest carbon footprint and in the fruits, vegetables as well as beans and nuts have much lower carbon footprint
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over all spatial arrangement of atoms in a protein is called as secondary structure.select one:truefalse
The over all spatial arrangement of atoms in a protein is called secondary structure. This is false . it is called as conformation.
The over all spatial arrangement of atoms in a protein is called as conformation. The primary structure of protein is called as amino acid. the local spatial arrangement of the polypeptide chain is explained the secondary structure. the overall spatial arrangement is called as conformation. The native conformation is the conformation of functional protein.
Thus, The over all the spatial arrangement of atoms in a protein is called secondary structure. This is false . it is called as conformation.
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the isotope of an atom containing 31 protons and 39 neutrons suddenly has two neutrons added to it. what isotope is created? responses gallium-41 gallium-41 gallium-72 gallium-72 yttrium-72 yttrium-72 yttrium-41
The isotope of an atom containing 31 protons and 39 neutrons suddenly has two neutrons added to it. Isotope is created: is: Gallium-72.
What is isotope?
Isotopes are two or more atom types that share the same atomic number (number of protons in their nuclei), location in the periodic table, and chemical element but have distinct nucleon numbers (mass numbers) as a result of having a different number of neutrons in their nuclei. Although the chemical properties of each isotope of a given element are nearly identical, they differ in their atomic weights and physical characteristics.
The name "isotope" refers to the fact that different isotopes of a single element occupy the same position on the periodic table. The term "isotope" is derived from the Greek words isos ("equal") and topos ("place"), which together mean "the same place."
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Which is the correct equation to use when performing calculations involving the dilution of a solution?.
The correct equation to use when performing calculations involving the dilution of a solution is Option c) Mconc × Vconc = Mdil × Veil.
Dilution is the procedure of reducing the concentration of a solute in an answer, usually truly by way of blending with an extra solvent like including more water in the solution. To dilute a solution approach to feature greater solvents without the addition of greater solute.
Dilution is the manner of lowering the concentration of a given solute in its answer. The chemist can do it surely by way of blending with more solvent. as an example, we are able to upload water to the focused orange juice to dilute it till it reaches a concentration so that it will be great to drink.
Dilution is the method of lowering the attention of a solute in an answer, usually certainly by mixing with a greater solvent like including more water in the solution. To dilute a solution way to feature more solvents without the addition of greater solute.
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Disclaimer:- your question is incomplete, please see below for the complete question.
Which is the correct equation to use when performing calculations involving the dilution of a solution?.
a) Mconc/Vconc = Mdil/Vdil
b) Mconc × Vdil = Mdil × Vconc
c) Mconc × Vconc = Mdil × Vdil
d) Vconc/Mconc = Vdil/Mdil
What are 3 differences between ionic and covalent bonds?.
Covalent bonds have a low melting point and high boiling point, but ionic bonds have very high melting and boiling points.
In plain English, what is a covalent bond?When two atoms exchange an electron pair, they form an interatomic connection known as a covalent bond in chemistry. The electrical interaction of their protons for the identical electrons is what causes the binding.
What causes a covalent bond to form?A covalent bond is formed when two atoms exchange one or even more pairs of electrons. The two two atoms are concurrently drawing these electrons to them. When the difference in two atoms' electronegativities is too low for an electron transfer to happen, a covalent bond is created.
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when an electric current is passed through water, hydrogen and oxygen gases are liberated. part a what stp volume of oxygen gas is obtained from the electrolysis of 100.0 ml of water?
62.22L volume of oxygen gas is produced throughout the electrolysis process of 100.0 ml of water.
Equation:
Volume of water equals 100.0 ml.
Water has a density of 1.000g/ml.
Mass of water = Density x volume
Mass of water = 1.000g/ml x 100ml
= 100g.
Water has a molar mass of 18 g/mol.
Mass / molar mass
= 100/18
= 5.55 moles of water.
Using the partial equation
2H2O ------> O2 + 4H+ + 4e- (oxidation)
At STP, 1 mole of oxygen gas is created from 2 moles of water.
Therefore, at STP,
5.55 moles of water will result in
⇒1/2 x 5.55
= 2.77 moles of oxygen.
One mole of oxygen takes up 22.4L at STP.
Therefore, 2.77mol will take up
⇒2.77 x 22.4
= 62.22 Liters.
As a result, 62.22L of oxygen gas were produced throughout the electrolysis process.
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complete the sentence.
The ........
the forces between
the particles, the further apart the particles will be.
The weaker the forces between the particles, the father apart the particles will be. The attraction between the particles is due to the intermolecular force of attraction between them.
What are intermolecular forces?
The intermolecular force is an attractive force between the positive component of one atom to the negative component of another atom. There are 4 types of attractive forces namely, hydrogen bonds, dispersion, dipole-dipole and ion-dipole.
The particles are attracted to each other due to the intermolecular force between them. the stronger the force of attraction, the nearer the particles will be.
Therefore, the weaker the intermolecular forces between the particles, the farther apart the particles will be.
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the solubility of barium fluoride baf2 in water is 7.5 x 10^-3 m. calculate the solubility product constant of this salt.
The solubility product constant of this salt is 0.00625 M.
What is molar solubility?A compound's capacity to dissolve in a given substance is known as its molar solubility (M), which is a unit of measurement. Molar solubility is measured as moles/L and is more specifically the maximum number of moles of a solute that can dissolve in one litre of solvent.
The quantity of moles dissolved in a solution volume of 1 L is known as its molar solubility.
When BaF2 breaks down,
BaF₂ → Ba₂⁺ + 2F⁻
If BaF2 has a molar solubility of X and Ba₂+ and F have molar solubilities of X and 2x, respectively, the solubility product constant -ksp is calculated as follows:
ksp = [Ba²⁺][F⁻]²
ksp = X × (2X)²
ksp = 4X³
since ksp = 7.5 x 10⁻³
4X³ = 7.5 x 10⁻³
X = 0.00625 M
BaF₂ has a 0.00625 M molar solubility.
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For the following element symbols, write the charge on each element needed in order to
make that element isoelectronic with a noble gas. Ex: F -1
a) Al _____
b) F _____
c) Li _____
d) Be_____
e) Se_____
f) Rb_____
g) In_____
h) C _____
i) Group 2 _____
j) Group 14 _____
k) Group 17 _____
l) Group 13 _____
The charge on the following element symbols are as follows:
a) Al : +3
b) F : -1
c) Li : +1
d) Be : +2
e) Se : +2
f) Rb : +1
g) I : -1
h) C : ±4
i) Group 2 : +2
j) Group 14 : +4 and +2
k) Group 17 : -1
l) Group 13 : +3 and +1
What is the electrical charge on different elements in periodic table?The charge on each element is the number of electrons gained or donated by the atom in order to reach a stable noble gas configuration.
These charges can be positive if the electrons are donated. For example, sodium(Na) has 11 electrons and if it donate 1 electron to achieve the electronic configuration of Neon (Ne) and result in +1 charge on sodium.
Similarly if an atom lose electron(s) to reach a stable configuration the atom will have a negative charge.
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An atom of sodium has 11 electrons. Make a sketch of a sodium atom, showing how many electrons it has at each energy level. Infer how reactive sodium atoms are.
11 electrons make up sodium. Consequently, sodium's electrical arrangement is (2,8,1).
How do electrons work?The negatively charged components of an atom are called electrons. A positive proton, a negative electron, and a neutral neutron make up an atom. Electrons are atom-revolving, negatively charged particles.
The earth has about 118 different elements. Sodium is a crucial component. Sodium has an atomic number of 11. In sodium, the first shell has two electrons, the second shell has eight, and the third shell will have one electron.
A metal is sodium. It will become a cation after losing that one electron. It changed to Na+.
We are aware that sodium has an atomic number of 11. This informs us that sodium possesses 11 protons and 11 electrons due to its neutral state.
Sodium therefore has 11 electrons. Consequently, sodium's electrical arrangement is (2,8,1).
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Relative mass of mg(oh)2
The molar mass of Mg(OH)2 is 58.3 g mol−1.
The relative atomic mass of an element indicates its mass compared to the mass of atoms of other elements. Carbon has a relative atomic mass of 12 and magnesium has a relative atomic mass of 24. This means that each magnesium atom has twice the mass of a carbon atom. Atomic weights related to 1/12th the mass of a carbon atom are called relative atomic masses.
It is called the relative atomic mass because it compares the atomic mass to 1/12 the mass of a carbon atom. Relative mass is the average atomic mass of all isotopes present expressed as a percentage, and absolute mass is the sum of proton number and neutron mass. As the speed of an object approaches the speed of light, its relativistic mass m becomes infinite.
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what is the iupac name for the compound shown? the molecule has the formula c h 3 c h 2 c o o h. iupac name:
Although it is more frequently referred to as lactic acid, the IUPAC nomenclature for it is 2-hydroxypropanoic acid.
What does Iupac's naming scheme entail?Whether in a linear chain or a ring, the main chain of carbons joined by a single bond serves as the basis for IUPAC nomenclature. According to a particular set of priorities, all deviations, whether numerous links or atoms other than hydrogen and carbon are denoted by prefixes or suffixes.
What is a good IUPAC example?Therefore, the IUPAC name is 2,5,5-trimethyl-2-hexene. The blockchain in example (2) that contains both carbon atoms from the double bond is five atoms long. There is a six chain present, but there is only one double-bonded carbon atom in the chain. Consequently, this compound's root name will be
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In which cell is there is an absence of homologous chromosomes?
The cell where there is an absence of homologous chromosomes is Gamete.
Chromosomes in a couple – commonly one inherited from the mother and one from the daddy. For example, the two copies of Chromosome 1 in a cell could be called homologous chromosomes.
This organism is diploid, however only has a 1 pair of chromosomes. these are homologous chromosomes, because they create the same genes. however, they can deliver distinct alleles of every gene, proven by their inner pattern.
Homologous chromosomes are matched pairs containing the identical genes in equal places along their period. Diploid organisms inherit one reproduction of every homologous chromosome from every discern; all together, they may be considered a complete set of chromosomes.
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Sodium is much more apt to exist as a cation than is chlorine. This is because ________.
Compared to chlorine, sodium is significantly more likely to exist as a cation. This is so because chlorine ionizes with a higher energy than sodium.
What is the crucial factor here?The ionization energy is the minimal energy needed to remove the valence electron that is weakly bound from the isolated gaseous atom. As a result, removing one electron from sodium is simple since it will adopt the structure of a noble gas and become stable. Chlorine, however, does not fall into this category, so it has a higher ionization energy than sodium. Because chlorine has a higher ionization energy than sodium, sodium is much more likely to exist as a cation.
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an unknown gas effuses through an opening at a rate that is one third that of helium gas. what is the molar mass of the unknown gas?
The molecular mass of a unknown gas would be 36g/mol.
According to Graham's law of Effusion , we can find the molecular mass of a unknown gas. Rate of effusion of gas 1 / rate of effusion of gas 2 = square root of molecular weight of helium gas / molecular weight of unknown gas.
(1/3) / 1 = (square root of 4g/mol)/ MW of x
= 36 gm/mol
Graham's Law states that the rate of effusion of a gas is inversely proportional to square root of the density of the gas. Since equal volumes of gas at the same temperature and pressure contain equal number of gas molecules, the rate of effusion is also inversely propotional to the square root of molecular weight of the gas. The gas with the lowest molecular weight effuses the fastest and vice versa.
Law deals with the rate at which a gas will escape from a pinhole into a vaccum, which is different from Graham's law of diffusion.
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