If you bring the two balloons close together, they would experience a force of attraction. This is because like charges would repel each other, while opposite charges attract each other. The balloons would experience an electric force, which would cause them to move towards each other.
What do you mean by electrostatic force?Electrostatic force is a type of force that occurs between charged particles. It is a fundamental force of nature that arises from the interaction between charged objects.
How do electrostatic force play an important role?The electrostatic force plays a crucial role in many natural phenomena, such as the behavior of charged particles in electric and magnetic fields, the formation of lightning, and the behavior of colloidal suspensions. In technology, the electrostatic force is used in many applications, such as electrostatic precipitators, electrostatic spraying, and electrophoresis.
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Answer:
The balloons move away from each other.
Explanation:
This is 100% Correct
when an oxygen atom forms a chemical bond with another oxygen atom, what product does this reaction produce?
When an oxygen atom forms a chemical bond with another oxygen atom, a molecule (O₂) is formed which is covalently bonded.
A covalent bond is defined as the bond that consists of the mutual sharing of one or more pairs of electrons between two atoms. Generally, these electrons are simultaneously attracted by the two atomic nuclei.
Basically, there are two types of covalent bonds which are polar and nonpolar. Nonpolar covalent bonds are usually formed between two atoms of the same element or between different elements that share the electrons equally. Lets consider an example, when an oxygen atom makes bond with another oxygen atom to fill their outer shells, a non - polar covalent bond arises between two oxygen atoms which forms an oxygen molecule.
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Which one of the following molecular formulas is also an empirical formula?
a) C6H6O2
b) C2H6SO
c) H2O2
d) H2P4O6
e) C6H6
Another molecular formula that has an empirical formula is C2H6SO. So, B is the correct response.
How would you summarize the empirical rule?The "68-95-99.7 rule" is another name for the empirical rule, which specifies how data should be dispersed in a normally distributed. The rule stipulates that: - 68% of the data sets will be within 1- standard deviation of each other (roughly). - The mean value and two standard deviations will be shared by 95% of the data points. of the atoms in a chemical molecule is its empirical formula.
C2H6SO, for instance, is an empirical formula because it depicts the proportional number of atoms in the simplest ratio.
The other examples serve as examples of molecular formulas since they show the actual number of atoms in a given molecule.
For instance, the chemical formula for C6H6O2 has the common number 2 and may be represented as C3H3O.
Only in C2H6SO is there no common number; as a result, the formula is empirical.
The resulting response is B.
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the equivalent conductance of two parallel resistors with the conductance of g1 and g2 is equal to: group of answer choices g1 g2 g2-g1 g1-g2 (1/g1 1/g2 )^(-1)
The effective conductance of two parallel resistors with conductance g1 and g2 is, g1 + g2
The term conductance(g) is the inverse of resistance. It is the ratio of current(i) over voltage(v).
This gives us yet another way to write Ohm's Law,
i = v × g
g = 1/r, where r is the resistance.
Using the conductance form of Ohm's Law, we can write these expressions,
Current = current through conductance 1 + current through conductance 2
i = v × g1 + v × g2
i = v × (g1 + g2)
The effective conductance is, g1 + g2.
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--The complete question is, The equivalent conductance of two parallel resistors with the conductance of g1 and g2 is equal to:
a) g1 g2
b) g2-g1
c) g1+g2
d) (1/g1 + 1/g2 )^(-1)--
Which one of the common electrophilic aromatic substitution reactions puts an electron donating group on a benzene ring?Multiple ChoiceRCI+ AICI3RCOCI+ AICI3SO3+H2504Br2, FeBr3
The most common electrophilic aromatic substitution reactions puts the electron donating group on the benzene ring is the correction is RCl + AlCl₃.
The Electrophilic aromatic substitution reactions is the organic reactions in which an electrophile will replaces the atom which is attached to the aromatic ring. Generally, these reactions include the replacement of the hydrogen atom which belongs to the benzene ring with an electrophile.
The RCl + AlCl₃ will add the alkyl group, The R group to the benzene ring. As the R is an electron donating group.
Thus, the RCl + AlCl₃ will puts the electron donating group on a benzene ring.
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A semi-permeable membrane can withstand an osmotic pressure of 0.75 atm. What molarity of aqueous magnesium bromide solution would reach the limit for this membrane? Assume RT=25 L
⋅
atm/mol.
(a) 0.03 mM
(b) 0.01 mM
(c) 0.01 M
(d) 1 M
(e) 0.03 M
Molarity of aqueous magnesium bromide solution would reach the limit for this membrane while assuming RT=25 L, is 0.03 M. hence, the correct option is (e).
Osmotic pressure is a measure of the pressure required to prevent the flow of water across a semi-permeable membrane due to a difference in concentration of solutes on either side of the membrane.
The formula of osmotic pressure:
= π
= MRT
here π is osmotic pressure in atmospheres,
M is molarity of solution,
R is gas constant (R = 0.0821 L·atm/mol·K),
T is temperature in Kelvin.
Given that:-
The membrane can withstand an osmotic pressure of 0.75 atm
and assuming T = 298 K,
To solve for molarity:
= Molarity
= π / R T
= 0.75 atm / (0.0821 L·atm/mol·K x 298 K)
= 0.75 / (0.0821 x 298)
= 0.75 / 23.54
= 0.0318 M
Rounding to the first decimal place, we have:
= Molarity
= 0.0318 M
= 0.03 M
So the molarity of the aqueous magnesium bromide solution that would reach the limit for the membrane is 0.03 M. The correct answer is (e) 0.03 M.
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if a person eats 12 milligrams (mg) of salt in a day and excretes 11 mg of it in the urine, what happened to the remaining 1 mg?
Salinity levels in the body are still at 1 mg. As it is digested, glucose produces CO2 and water.
The mass equilibrium of these two chemicals is upset by the addition of water and CO2 during glucose metabolism. Both metabolites need to be either expelled or subjected to additional metabolising in order to maintain mass balance.
The main type of sugar found in blood is glucose, which serves as the body's cells' principal source of energy. Our bodies can also produce glucose from other compounds or from the foods we consume. In the blood, glucose which is transported to the cells in the blood. Your blood's primary sugar is known as blood sugar or glucose. It is the primary source of energy for your body and is obtained from the food you consume.
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A. Write a mechanism for the reaction of aniline with maleic anhydride to form maleanilic acid . Be as complete as possible and show electron flow for all steps. *Note: Do NOT simply write out the book mechanism without any critical review. It may not be complete in terms of showing ALL electron flow (proton transfers, in particular, are often assumed and not drawn out fully).B. Draw the chemical structure of the mixed anhydride intermediate.
Aniline's nitrogen atom functions as a nucleophile because it has a spare pair of electrons that it can give away.
When aniline interacts with acetic anhydride/glacial acetic acid in the presence of zinc dust, acetanilide is created from aniline. In order to obtain acetic anhydride precipitate, a mixture of aniline, glacial acetic acid, acetic anhydride, and zinc dust is refluxed under anhydrous conditions. By means of a nucleophilic substitution reaction, aniline and acetic anhydride combine to generate acetanilide, a process known as acetylation. Aniline serves as the nucleophile in this reaction, and the acyl (CH3CO-) group from acetic anhydride serves as the electron donor. The following diagram illustrates the chemical pathway that results in maleanilic acid when aniline and maleic anhydride are combined.
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Oh no! a thermometer suddenly fell on the floor and broke! check all actions, if any, that you must take. a. pick up the broken thermometer, throw the broken glass away, and clean the area. b. tell the teacher about the accident right away. c. call 911. d. try to save the red alcohol from the thermometer for recycling purposes. e. pay for a replacement thermometer.
In the event that a thermometer breaks, the most important action to take is to pick up the broken glass and dispose of it properly.
The correct answer is: a. pick up the broken thermometer, throw the broken glass away, and clean the areaYou should also clean the area to ensure that there are no remaining pieces of glass. Additionally, it is important to tell the teacher about the accident right away and not try to save the red alcohol or pay for a replacement thermometer, as this is not necessary.
Calling 911 is not necessary, unless someone is injured by the broken thermometer. When cleaning up a mercury spill, it is important to use caution and protective gear, such as gloves, goggles, and a face mask, to reduce the risk of exposure to mercury vapors. You should also make sure to keep any children and pets away from the spill area.
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how do the polarities of 1-butanol, diethyl ether, and 1-hexene compare to each other?
The polarity of a molecule depends on the distribution of electrical charge within the molecule, and is determined by the arrangement of atoms and their bond polarities.
1-Butanol (C4H10O) is a polar molecule due to its hydroxyl (-OH) functional group, which gives the molecule a partially positive charge at the carbon atom and a partially negative charge at the oxygen atom.
Diethyl ether (C2H5OC2H5) is a non-polar molecule because its two carbon atoms are linked by a non-polar single bond and the molecule has a symmetrical distribution of electrons.
1-Hexene (C6H12) is also a non-polar molecule because its carbon atoms are linked by non-polar single bonds and its distribution of electrons is symmetrical.
So, compared to 1-butanol and diethyl ether, 1-hexene has the lowest polarity. Meanwhile, diethyl ether has lower polarity compared to 1-butanol.
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Determine the composition of the liquid equilibrium with a vapor containing 70 mol% benzene 30 mol% toluene if the system exists in a vessel under 2 atm pressure. Predict the equilibrium temperature.
Using the data for benzene and toluene's vapor-liquid equilibrium (VLE) at 2 atm, one may determine the composition of the liquid equilibrium in a vessel under that pressure.
Assuming ideal conduct, Raoult's law can be used to define the vapor-liquid equilibrium connection.
Each component's vapour pressure in a combination is inversely correlated with its mole fraction in the liquid phase at a particular temperature. As a result, the formula for calculating the mole fraction of benzene in the vapour phase (y benzene) is as follows:
P is the total pressure, x benzene and x toluene are the mole fractions of benzene and toluene in the liquid phase, respectively, and y benzene is equal to (P benzene/P) * (x benzene / (x benzene + x toluene)) = 0.70.
where P is the overall pressure, P benzene is the vapour pressure of benzene at the specified temperature, and x benzene and x toluene are the corresponding mole fractions of benzene and toluene in the liquid phase.
The temperature where the system achieves equilibrium can be predicted using a VLE database or correlation.
This is only an estimate, and non-ideal behaviour or other factors may cause the actual temperature at which the system reaches equilibrium to vary.
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a laser in my laboratory uses argon gas, delivered from a gas cylinder at 17.2 mpa. assuming an ideal gas, what is the density of gas in this cylinder when the room temperature is 20 deg c?
The density of gas in the given cylinder is 281.9 kg/m^3.
The ideal gas law or the general gas equation refers to is the equation of state of a hypothetical ideal gas and is a good approximation of the behavior of many gases under many conditions. It is given by:
PV = nRT
Where P is the pressure, V is the volume, n is the number of moles of the substance, R is the ideal gas constant, and T is the temperature.
Number of moles = mass of a substance/molar mass of a substance
Ley m be the mass of the substance and molar mass of argon gas is 39.948 mol/gas, hence number of moles = m/39.948.
In the given case,
P = 17.2 mpa
V = ?
n = m/39.948 moles
R =8.31446261815324 joules per kelvin per mole
T = 20 deg c = 293.15 K
Hence,
17.2 x 10^3 V = (m/39.948)( 8.3145)(293.15)
Density (ρ) is the substance's mass per unit of volume and is given by ρ = m/V . Hence, the ideal gas formula can be rewritten as:
(17.2 x 10^3*39.948)/ (8.3145*293.15) = m/V = ρ
ρ = 281.9 kg/m^3
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42.0 liters of so2 gas are collected at stp. how many moles are in this amount
The 42.0 liters of SO₂ gas are collected at the STP. The number of moles are in this amount is 1.8 mol.
According to the ideal gas equation we get :
P V = n R T
V = volume of the gas = 42.0 L
n = moles
R = gas constant = 0.823 atm L / mol K
At STP ,
T = temperature = 273.15 K
P = pressure = 1 atm
substituting the values, we get :
n = P V / R T
n = ( 1 × 42 ) / ( 0.0823 × 273.15)
n = 1.8 mol
Thus, the moles at STP for the volume of 42 L is 1.8 mol.
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imagine you are setting up a factory to create cocl2 using the reaction in this lab. what conditions would you create in order to maximize the production of cocl2 ?
To maximize the production of COCl2, certain conditions should be considered such as temperature, pressure, reactant concentration, stirring and catalyst.
Temperature: The reaction is exothermic, so increasing the temperature can increase the rate of reaction and thus increase the production of COCl2. However, temperatures that are too high may cause thermal decomposition of COCl2.
Pressure: Higher pressures can increase the concentration of reactants and increase the production of COCl2, but too high pressures may cause safety concerns and damage to the equipment.
Reactant Concentration: Increasing the concentration of reactants can increase the production of COCl2. However, higher concentrations may also increase the rate of side reactions that compete with the desired reaction.
Stirring: Stirring can increase the reaction rate by improving the mixing of reactants and increasing the surface area for reaction.
Catalyst: A suitable catalyst can increase the reaction rate and increase the production of COCl2.
It is important to note that these conditions should be optimized based on specific reaction conditions, such as the reactant stoichiometry and reaction kinetics. An optimal balance must be found between maximizing production and avoiding unwanted side reactions or decomposition of the product.
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why does labour create value according to locke?
According to Locke, productive labor is a moral activity because it produces the products needed to maintain human life. As such, it is required that productive labor be a value-creating activity.
Locke claimed that private property rights are inalienable human rights. According to the reasoning, one is entitled to the rewards of their job because they worked hard to earn them. The worker must also have a natural property interest in the material itself because instant production required exclusive ownership. Marx used this theory of value, which holds that the amount of labor in a product determines its worth and that labor has the sole legal claim to production.
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1. What i the advantage of making unblock lightly non polar? Provide a full explanation of the chemical principle involved
The advantage of making a solvent unblocking lightly nonpolar is to increase the solubility of polar and ionic compounds.
The solubility of a solute in a solvent is largely determined by the relative polarity of the solute and solvent. Polar solvents dissolve polar solutes, while nonpolar solvents dissolve nonpolar solutes. Making a solvent unblock lightly nonpolar increases its ability to dissolve polar and ionic compounds by reducing the difference in polarity between the solvent and solute.
This allows polar and ionic compounds to be dissolved in a nonpolar solvent, which can be useful in various applications, such as chromatography and chemical reactions.
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why β-carotene is much more soluble in petroleum ether than in water
The β-carotene is much more soluble in the petroleum, ether than in the water because the β-carotene is non polar compound and the petroleum , ether is also a non-polar compound.
The like dissolve like means that the polar solvent dissolves the polar compounds and the non polar solvents will dissolves the non polar compounds. Therefore, the β-carotene is the non - polar compound and the petroleum and the ether is the non polar solvents, this is why the β-carotene are soluble in them. The other solvent is the water which is a polar solvent.
Thus , β-carotene is much more soluble in the petroleum ether than in water because of the polarity.
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what is the chemical formula of the white substance formed where the two gases meet
Ammonium chloride- NH4CL is the white substance formed when Nh3 and gases meet.
Consequently, a proton transfer from HCl to NH3 in cluster II results in the formation of ammonium chloride (NH4Cl). Considering that cluster II is just the union of two stable HCl-NH3 units, this result is extremely startling.
Ammonium chloride's main use is as an electrolyte in dry cells and as a source of nitrogen for fertilizers. Ammonium chloride is also widely used as a component of galvanizing, tinning, and soldering fluxes to remove oxide coatings from metals and so enhance the solder's adherence.
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What hypothesis has come about, at least in part, because of the discovery of chiral amino acids in the Murchison meteorite, which landed in Australia in 1969?
a. the universe is most likely expanding
b. natural amino acids are D-amino acids
c. homochirality originated on Earth d. the origins of homochirality might be extraterrestrial
The correct option is "d". The origins of homochirality might be extraterrestrial.
The discovery of chiral amino acids in the Murchison meteorite, which landed in Australia in 1969, has led to the hypothesis that the origins of homochirality might be extraterrestrial in origin. This hypothesis suggests that homochirality might have been introduced to Earth by meteorites, which could have provided the necessary organic molecules for life on Earth to form.
Homochirality means the fact that most molecules are composed of only one version of a particular chiral molecule, rather than a mix of both.
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Which pair of molecules interacts through hydrogen bonding? CH3OH and CH3CH3
CH4 and CH3CH3
CH3Cl and HCl
H2O and NH3 CO2 and C2H6
The pair of molecules which interacts through the hydrogen bonding is the H₂O and NH₃ .
The hydrogen bonding is the type of the intermolecular force of the attraction that occurs because of the dipole dipole interaction. The hydrogen bonding occur between the hydrogen atom of the one molecule attached to the high electronegative atom and the other high electronegative atom. There is two types one is intermolecular hydrogen bonding and the other is intramolecular hydrogen bonding. The hydrogen bonding is shown as :
H
|
H - O - H ------ : N - H
|
H
Thus, the water and the ammonia interacts through the hydrogen bonding.
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12 11 25. The percentage by mass of oxygen in Al₂(SO₂), 2H₂O [A1 = 27, S = 32, H = 1,0 = 16] [UTME] (a) 14.29% (c) 50.79% (b) 25.39% (d) 59.25%
Answer: (d) 59.25%
Explanation: :D
What does the Kinetic Theory of Matter state?
Particles in solids do not move at all
Matter is anything that has mass and volume
All particles of matter are in constant motion
Particles in liquid move the fastest
The kinetic theory of matter state that all particles of matter are in constant motion.
Matter is made up of particles which are constantly moving. The energy level of these particles depend upon the temperature possessed by the matter and the frequency of movement of these particles helps us to determine whether that matter is in a solid, liquid, or gaseous state.
What is matter?Matter is something that takes up space having volume and can be weighed.
What is temperature?Temperature is the degree of hotness or coldness of a body.
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The C-H bond in the methyl cation, CH3*, results from the overlap of which orbitals? a. Sp3-sp2 b. sp3-sp3 c. sp2-sd. sp3-p p-s
The C-H bond in the methyl cation, CH₃⁺, results from the overlap of which orbitals is sp² - s orbitals.
The valency of the carbon is 4. The valence electrons in the carbon atom is 4. The carbon normally forms the 4 bonds, but, in the cases where the carbon atom has a charge or the unpaired electron, Carbon for only 3 bonds . The carbon atom is sp² hybridized and the unhybridized P orbital is empty. Therefore , the bond form by the overlap of the sp² - s orbitals.
Thus, the sp² - s orbitals will overlap C - H bond in the methyl cation CH₃⁺.
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An iron wire (density = 7.87 g/cm³) has a diameter of 0.20 mm. If a sample of this iron wire has a mass of 21 g, how long is this
wire?
The length of the iron wire is 2077 cm.
How long is the wire?We have to note that the length of the wire is the thing that we are supposed to obtain in this question. We must note that the density of the object is the ratio of the mass to the volume of the object.
In this case, we need to first find the area of the iron wire from;
A = πr^2
A = A rea of the circle
r = radius of the circle
A = 3.142 * (0.2 * 10^-1)^2
A = 1.3 * 10^-3 cm^2
Now;
Density = mass/volume
Volume = Mass/ Density
Volume = 21 g/7.87 g/cm³
= 2.7 cm^3
Then volume = Area * length
Length = Volume/Area
Length = 2.7 cm^3/ 1.3 * 10^-3
= 2077 cm
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wine is 13 % alcohol by volume. how many milliliters of alcohol are in a 0.800- l bottle of wine? express your answer to two significant figures.
The milliliters of alcohol are in a 0.800 l bottle of wine are: 104 ml
What is a percentage?Percentage is defined as the number that represents a ratio of a total that is divided by 100 equal parts. It is represented by the symbol %.
To solve this exercise, the percentage formula and the procedure to be applied is as follows:
n= (% * nt) / 100
Where:
% = percentagen= number portionnt = total of the number portionInformation about the problem:
% = 13%nt = 0.800 l n(alcohol) = ml?Using the percentage formulate, we get:
n= (% * nt) / 100
n(alcohol) = (13 * 0.800 l)/100
n(alcohol) = 0.104 l
By converting the volume to (ml) we get:
n(alcohol) = 0.104 l * 1000 ml/ 1l
n(alcohol) = 104 ml
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calculate the expected ph of buffer plus added hcl. show your work for full credit. how much did the value decrease when acid was added
The expected pH of a buffer solution can be calculated using the Henderson-Hasselbalch equation is the initial pH of the buffer is 5.57.
The Henderson-Hasselbalch equation can be used to calculate the predicted pH of a buffer solution: [tex]pH=pKa+log(\frac{A-}{HA})[/tex].
Where pKa is the buffer system's acid dissociation constant, [A-] is the concentration of the base (A-), and [HA] is the concentration of the acid (HA).
Because 5 mL of NaOH reacts with 5 mL of acetic acid.
Acetic acid millimole remaining = 7.5 – 5 = 2.5 Millimole
Sodium acetate millimole = 12 + 5 = 17 millimoles.
[tex]P^H[/tex]=4.74+log [17 millimoles / 30 mL] / [2.5 millimole / 30 mL]
= 4.74 + 0.83
= 5.57
Hence, the buffer system's value decreases when acid was added is 5.57.
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HELP ME ASAP PLSSSSSSSSSSSSSSSSSSSSSSS
what statement correctly describes how nitrogen in the soil return to the Atmosphere
a- soil bacteria convert nitratrates into nitrogen gas
b- nitrogen fixing bacteria in the plant roots convert nitrates into nitrogen gas
Answer:
I'm pretty sure that it's B but maybe Im wrong
what are the coordination numbers of cobalt(iii), platinum(ii), and platinum(iv) in complexes?
The coordination numbers of cobalt(III) is 3, platinum(II) is 5, and platinum(IV) is 7 in complexes refer to the number of ligands or atoms that are bonded to the central metal ion in the complex.
The coordination number can vary depending on the nature of the ligands and the oxidation state of the metal ion.
For cobalt(III), the most common coordination numbers are 6 and 8, with octahedral and square-planar geometries being the most common.
For platinum(II), the most common coordination number is 6, with octahedral geometry being the most common.
For platinum(IV), the most common coordination number is 6, with square-planar geometry being the most common.
It's important to note that these are general trends, and the actual coordination number can vary depending on the specific complex.
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what is the ph of a 2.45 x10-3 m sulfuric acid (h2so4) solution? (assume both h dissociate completely).
The pH of a 2.45 x10-3 m sulfuric acid (H2SO4) solution is 4.90*10^-3 M.
1 mol of H2SO4 given 2 mol of H+
So, [H+] = 2*[H2SO4]
= 2*2.45*10^-3 M
= 4.90*10^-3 M
The pH scale is a useful tool for illustrating how basic or acidic a solution is. By taking the negative logarithm of the hydronium ion concentration, or pH = -log[H3O+], we can determine the pH of a solution. The pH is measure of acidity or basicity of a solution by measuring the concentration of OH- and H+ in the solution. Highly basic solution have a pH value near 14 and that of acidic solution is near 1. H2SO4 is an higly acidic solution its pH is usually seen near 1. H2SO4 is diluted using water to make it less acidic and used in labs.
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which of the following statements correctly describe the relationship between the number of particles in a sample and its mass? select all that apply. multiple select question. two different samples of c-12 atoms that have the same mass must contain the same number of atoms. two samples may contain the same number of atoms but have different masses. a 10.00-g sample of li atoms contains the same number of atoms as a 10.00-g sample of ar atoms. the number of ne atoms in a sample can be determined from the mass of the sample.
The statements correctly describe the relationship between the number of particles in a sample and its mass are:
Two different samples of c-12 atoms that have the same mass must contain the same number of atoms.Two samples may contain the same number of atoms but have different masses.The number of ne atoms in a sample can be determined from the mass of the sample.What is the mass about?The statement "Two different samples of C-12 atoms that have the same mass must contain the same number of atoms." is true because the atomic mass of a carbon-12 atom is a constant and its mass does not change. This means that if two samples of carbon-12 atoms have the same mass, then they must contain the same number of atoms.
Note: The mass of a sample is proportional to the number of atoms it contains, but the relationship between mass and number of particles is not one-to-one. The atomic masses of different elements differ, which means that different elements will have different numbers of atoms for the same mass.
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the specific heat of aluminum is 2.70. what mass of aluminum (al) has a volume of 29 ml?
Aluminum's mass is 78.39 grams.
You may calculate the mass of aluminum using a substance's density.
Aluminum's density is 2.70.
Volume of aluminum (al) = mass of aluminum (m) = m/v = m/29 glml
Algebraic density divided by hydrogen density gives the specific gravity.
H2O's density is 1 glml.
m = 2.7 * 29 = 78.39; 2.70 = m/29 glml /1 glml m/29 = 2.70
Aluminium mass = 78.39.
Aluminum, for instance, has a density of 2.7 g/cm3. The phrase "every cubic centimeter of aluminum has a mass of 2.7 g" is another way to state this. Its mass is 5.4 g if you have 2 cubic centimeters of space. An object with a 3 cm3 volume would weigh 8.1 g.
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