Have you ever seen a building that looks as if it were made out of mirrors? These buildings are made using reflective glass. How would
replacing clear windows with reflective glass affect the temperature inside the building? Explain your ideas.
Answers
Answer:
the sun would reflect off of the windows causing less heat to travel into the building
Explanation:
Related Questions
How do I balance a chemical equation?
Answers
Answer:
Concept: Chemical Analysis
Start by taking inventory of the elements that you have Make a list, one for the right side and another for the left sideThen add coefficients to the elements to the right or left side to balance out the equationHow much heat is needed to raise the temperature of 100g of an iron from 25°C to
110°C?
(The specific heat of iron is 0.45 J/g∙°C).
Answers
Answer:
382.5J
Explanation:
Use the formula:
E = mcΔθ or Q = mcΔT
m = 100g
c = 0.45 J/g°C
ΔT or Δθ = 110 - 25 = 85°
Sub in the values:
E = 100 × 0.45 × 85
= 382.5J
If 53.5 g of c3h8 are burned in the presence of 15.0 g of oxygen to produce 23.3 g of co2. How many grams of water will be produced? c3h8 o2 co2 h2o
Answers
Mass of water is 45.2 grams.
Overall chemical equation for reaction of combustion a propane (C₃H₈):
C₃H₈ + 5O₂ → 3CO₂ + 4H₂O.
m(C₃H₈) = 53.5 g; mass of the propane
m(O₂) = 15.0 g; mass of oxygen
m(CO₂) = 23.3 g; mass of carbon dioxide
m(H₂O) = ?; mass of water
Conservation of matter states that the mass of the reactants have to be equal to the mass of the products.
m(C₃H₈) + m(O₂) = m(CO₂) + m(H₂O)
53.5 g + 15.5 g = 23.3 g + m(H₂O)
m(H₂O) = 69.0 g - 23.3 g
m(H₂O) = 45.2 g; mass of water
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When using a clamp to secure a flask to a ring stand, begin by choosing a ring stand and clamp that are appropriately sized for the ___ Position the clamp directly ___ the base of the ring stand. Turn the knobs of the clamp, making sure not to ___ the clamp around any glassware.
Answers
A ring stand and clamp that are appropriately sized for the glassware, Position the clamp directly above the base of the ring stand, making sure not to overtighten the clamp around any glassware.
Elaborating:Because a clamp is used to secure glassware like flasks, it's important to choose a clamp or ring stand of the right size so our glassware can fit on it correctly and easily.
Clasped mechanical assembly is generally ready over the base of the help or ring stand. Knobs are used to tighten the clamp so that clamped glassware does not move. However, the clamp should not be overtightened because doing so could break the glass.
Choose a ring stand and clamp that are the right size for the glassware before using a clamp to secure a flask to a ring stand. Position the clasp straight over the foundation of the ring stand. Adjust the clamp's knobs without over tightening the clamp around any glassware.
What is a ring clasp and stand utilized for?A ring stand is connected to ring clamps. They are available in a variety of sizes and can be used for: supporting a glass funnel in gravity filtration, supporting a heating mantle, or holding a separatory funnel during an extraction
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Draw dot and cross diagram to show formation of carbon dioxide
Answers
The dot and cross diagram is a way of representing a molecule along with its valence electrons and respective bonds. Valence electrons are drawn as a dot or a cross, each element will have a different connotation. Around the atoms, circles are drawn that indicate the bonds and how the electrons are shared.
Carbon has 4 valence electrons and oxygen has 6, the dot-and-cross diagram of CO2 will be:
A ____________ is required to transfer dna sequences from one organism to another.
genomic library
genetic probe
vector
restriction endonuclease
reporter gene
Answers
Will mark Brainliest!!! PLEASE HELP
Answers
2= B
3= E
4= F
5= A
How much calcium oxide would be made by the thermal decomposition of 25 grams of calcium carbonate?
CaCO3 -> CaO + CO2

A. 28 grams
B. 12 grams
C. 14 grams
D. 25 grams
Answers
Answer:
14 grams of calcium oxide would be produced by thermal decomposition of 25 grams of calcium carbonate.
Explanation:
You know:
CaCO₃ → CaO + CO₂
In the first place, by stoichiometry of the reaction (that is, the relationship between the amount of reagents and products in a chemical reaction) the following quantities react and are produced:
CaCO₃: 1 moleCaO: 1 moleCO₂: 1 moleBeing:
Ca: 40 g/moleC: 12 g/moleO: 16 g/molethe molar mass of the compounds participating in the reaction is:
CaCO₃: 40 g/mole + 12 g/mole + 3*16 g/mole= 100 g/moleCaO: 40 g/mole + 16 g/mole= 56 g/moleCO₂: 12 g/mole + 2*16 g/mole= 44 g/moleThen, by stoichiometry of the reaction, the following mass amounts of the compounds participating in the reaction react and are produced:
CaCO₃: 1 mole* 100 g/mole= 100 gCaO: 1 mole* 56 g/mole= 56 gCO₂: 1 mole* 44 g/mole= 44 gYou can then apply the following rule of three: if by stoichiometry of the reaction 100 grams of calcium carbonate CaCO₃ produce 56 grams of calcium oxide CaO, 25 grams of CaCO₃ how much mass of CaO will it produce?
\(mass of calcium oxide=\frac{25 grams of CaCO_{3} *56 grams of CaO}{100 grams of CaCO_{3} }\)
mass of calcium oxide= 14 grams
14 grams of calcium oxide would be produced by thermal decomposition of 25 grams of calcium carbonate.
? Question
Drag the tiles to the correct boxes to complete the pairs.
Recall how Newton's investigation of light followed one form of the scientific method. Match the statements
about Newton's experiment with the steps in the scientific method.
Answers
Newton's optics experiment observation and intervention. Newton made observations using the principle of light passing through prisms and the rays that were transmitted through them. It was revealed that light has a variety of properties and features.
The key experiment performed by Newton was reflecting light onto a piece of wood with a small hole drilled into it. He was able to create a pure-colored light beam in this way. He was able to demonstrate, for instance, that blue light produced solely blue light when it was refracted through a second prism.
Prisms, lenses, and optical rays were the basis of Newton's inquiry into the light.According to him, different colored lights had varying degrees of re-frangibility.Newton adopted the "Proof by experiments" method to back up his theories. Each technique was chosen to highlight a particular quality of light.Newton found a phenomenon called the Newton rings.After pressing two prisms together, Newton saw that there was a translucent area.To know more about Newton refer to: https://brainly.com/question/1883877
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Compare the compressibility of solids and liquids. Support your answer by describing the arrangement of particles in solids and liquids.(Does,t need to be very long or detailed)
Answers
Liquids are more compressible than solids.
In liquids there is space between the molecules, not a lot, but there is enough space to offer some compressibility. Solids are arranged in regular patterns and their molecules are almost fixed close together.
the structure of the nacl crystal forms reflecting planes 0.541 nm apart. what is the smallest angle, measured from these planes, at which constructive interference of an x-ray beam reflecting off the two planes is observed? assume x-rays of wavelength 0.0649 nm are used? give your answer in degrees.
Answers
The smallest angle, measured from the reflecting planes, at which constructive interference of an X-ray beam is observed is approximately 27.2 degrees.
To determine the smallest angle of constructive interference, we can use Bragg's Law, which states that constructive interference occurs when the path difference between two waves is equal to an integer multiple of the wavelength. The formula is given as:
2d sin(θ) = nλ
Where:
d is the distance between the reflecting planes (0.541 nm)
θ is the angle between the incident X-ray beam and the planes (the desired angle)
n is the order of the interference (we are considering the first-order, so n = 1)
λ is the wavelength of the X-ray beam (0.0649 nm)
Rearranging the formula, we get:
sin(θ) = (nλ) / (2d)
θ = arcsin((nλ) / (2d))
Plugging in the values, we have:
θ = arcsin((1 * 0.0649 nm) / (2 * 0.541 nm))
θ ≈ 27.2 degrees
Therefore, the smallest angle at which constructive interference is observed is approximately 27.2 degrees.
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A tank contains a mixture of 3.00 mol N₂, 2.00 mol O₂, and 1.00 mol CO₂ at 25 °C and a total pressure
of 10.0 atm. Calculate the partial pressure of each gas in the mixture.
Answers
The partial pressure of N₂ is 3.75 atm, the partial pressure of O₂ is 2.50 atm, and the partial pressure of CO₂ is 1.25 atm in the given mixture at 25 °C and a total pressure of 10.0 atm.
To calculate the partial pressure of each gas in the mixture, we can use the concept of Dalton's law of partial pressures. According to this law, the total pressure exerted by a mixture of gases is equal to the sum of the partial pressures of each individual gas.
First, we need to find the mole fraction of each gas in the mixture. The mole fraction of a gas is the ratio of the number of moles of that gas to the total number of moles in the mixture. We can calculate the mole fraction using the following formula:
Mole fraction (X) = Moles of gas / Total moles of all gases
For N₂:
Mole fraction of N₂ (X_N₂) = 3.00 mol / (3.00 mol + 2.00 mol + 1.00 mol) = 0.375
For O₂:
Mole fraction of O₂ (X_O₂) = 2.00 mol / (3.00 mol + 2.00 mol + 1.00 mol) = 0.250
For CO₂:
Mole fraction of CO₂ (X_CO₂) = 1.00 mol / (3.00 mol + 2.00 mol + 1.00 mol) = 0.125
Next, we can use the mole fractions to calculate the partial pressures of each gas. The partial pressure of a gas is equal to the mole fraction of that gas multiplied by the total pressure of the mixture.
Partial pressure of N₂ (P_N₂) = X_N₂ * Total pressure = 0.375 * 10.0 atm = 3.75 atm
Partial pressure of O₂ (P_O₂) = X_O₂ * Total pressure = 0.250 * 10.0 atm = 2.50 atm
Partial pressure of CO₂ (P_CO₂) = X_CO₂ * Total pressure = 0.125 * 10.0 atm = 1.25 atm
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Write the four quantum numbers of first electron in K shell of Sodium atom whose
electronic configuration is 1s22s22p63s1
Answers
The initial electron in the "K" shell has the following four quantum numbers: n = 1, s = 0, m = 0, and s = +1/2.
How are the four quantum numbers discovered?Looking at the period (numbered row) of the element on the periodic table will reveal the principal quantum number. The basic quantum numbers and period numbers of the electrons in the S-block and P-block are the same. Period minus 1 is the primary quantum number of electrons in the D-block.
The first four quantum numbers are?The primary quantum number (n), the orbital angular momentum quantum number (l), the magnetic quantum number (ml), and the electron spin quantum number are the four quantum numbers that make up an atom (ms).
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in a naturally occurring sample, 69.2 % of copper atoms have 34 neutrons and 30.8 % have 36 neutrons. what is the average mass of the atoms in your drawing? (copper-63 has a mass of 62.92960 amu , and copper-65 has a mass of 64.92779 amu .)
Answers
The average mass of the copper atoms in the sample is 63.4622232 amu.
The average mass of the copper atoms in the sample can be calculated by multiplying the mass of each isotope by its percentage abundance and summing the results.
Copper-63: 69.2% x 62.92960 amu = 43.480832 amu
Copper-65: 30.8% x 64.92779 amu = 19.9813912 amu
Adding these values together:
43.480832 amu + 19.9813912 amu = 63.4622232 amu
Therefore, the average mass of the copper atoms in the sample is 63.4622232 amu.
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when the acetic acid / sodium acetate buffer is titrated with naoh, some of the acetic acid is consumed according to the reaction: ch3cooh -oh ch3coo- h2o (note that the sodium is omitted, as a spectator ion it does not participate in any of the chemical reactions.) what chemical reaction occurs after the reaction above to stabilize the ph of the solution in the beaker beneath the buret? [ select ] ch3coo- h3o ch3cooh h2o ch3coo- h2o ch3cooh -oh ch3coo- ch3cooh ch3coo--h --oocch3 two of these all of these when the ammonia / ammonium chloride buffer is titrated with hcl, some of the ammonia is consumed according to the reaction: nh3 h3o nh4 h2o (note that h3o is used in place of hcl. hcl dissociates completely in water and the lone h quickly reacts with h2o to form h3o . chloride is omitted because it is a spectator ion.) what chemical reaction occurs after the reaction above to stabilize the ph of the solution in the beaker beneath the buret? [ select ] nh4 h2o nh3 h3o nh4 -oh nh3 h2o nh4 -oh nh4oh two of these all of these
Answers
It is "\(CH_{3}COOH\) + \(H_{2}0 CH_{3}COO-\) + \(H_{3} O\)+" for the acetic acid/sodium acetate buffer and\(NH_{3} +H_{3}O +NH_{4}++H_{2}O\)" for the ammonia/ammonium chloride buffer.
The subsequent chemical reaction for the acetic acid/sodium acetate buffer, which helps to stabilize the solution's pH, is \(CH_{3}COOH\) + \(H_{2}OCH_{3}COO\)- +\(H_{3} O\)+.
The chemical reaction that follows the initial reaction to stabilise the solution's pH is: \(NH_{3}\) +\(H_{3}O\)+ \(NH_{4}\)+ +\(H_{2}O\) for the ammonia/ammonium chloride buffer.
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A chemistry graduate student combines 4.0 grams of potassium and 13.0 grams
of iodine to form potassium iodide. According to the law of conservation of mass,
how much potassium iodide should be formed if the reaction proceeds to
completion?
Answers
Answer:
when the reaction is complete 17 g product must be obtain.
Explanation:
Law of conservation of mass:
According to the law of conservation mass, mass can neither be created nor destroyed in a chemical equation.
Explanation:
This law was given by french chemist Antoine Lavoisier in 1789. According to this law mass of reactant and mass of product must be equal, because masses are not created or destroyed in a chemical reaction.
For example:
In given reaction,
2K + I₂ → 2KI
4 g + 13.0 g = 17 g
17 g = 17 g
So when the reaction is complete 17 g product must be obtain because the amount of reactants were 17 g and according to law of conservation of mass ,mass can neither be created nor destroyed in a chemical equation but only convert from one to another form.
Another example:
In photosynthesis reaction:
6CO₂ + 6H₂O + energy → C₆H₁₂O₆ + 6O₂
there are six carbon atoms, eighteen oxygen atoms and twelve hydrogen atoms on the both side of equation so this reaction also followed the law of conservation of mass.
If 10 milliliters of liquid has a mass of 70 grams, what is its density?
O 7 g/mL
70 g/mL
0.7 g/mL
700 g/mL
Answers
Answer:
The answer is 7 g/mLExplanation:
The density of a substance can be found by using the formula
\(density = \frac{mass}{volume} \\\)
From the question
mass = 70 g
volume = 10 mL
We have
\(density = \frac{70}{10} \\ \)
We have the final answer as
7 g/mLHope this helps you
In a laboratory setting, concentrations for solutions are measured in molarity, which is the number of moles per liter (mol/L). Concentrations are often converted to more common units on the labels of household products. For a particular brand of bleach, the concentration of sodium hypochlorite (NaClO) is reported on the bottle as 7.25% by mass. The following information can thus be used to calculate the molarity of NaClO in the bleach:
• 1L of bleach has a mass of 1,100 grams.
• 7.25% of the mass of bleach is NaClO.
• 1 mol of NaClO has a mass of 74.44 grams.
What is the molarity (mol/L) of NaClO in the bleach?
Answers
The molarity of NaClO in the bleach is 0.101 M (mol/L).
Molarity (M) is the number of moles of solute per liter of solution.
It is calculated by dividing the number of moles of solute by the volume of the solution in liters.
To find the molarity of NaClO in the bleach, we need to use the following information given in the question:
1L of bleach has a mass of 1,100 grams7.25% of the mass of bleach is NaClO1 mol of NaClO has a mass of 74.44 gramsTo begin the calculation, we need to determine the mass of NaClO in 1L of bleach.
To do this, we can use the fact that 7.25% of the mass of bleach is NaClO:Mass of NaClO in 1L of bleach = 0.0725 x 1,100 g = 79.75 g
Next, we can convert this mass of NaClO to moles using its molar mass:
moles of NaClO = 79.75 g / 74.44 g/mol = 1.07 mol.
Finally, we can use the formula for molarity to calculate the molarity of NaClO in the bleach:
Molarity = moles of solute / volume of solution in litersMolarity = 1.07 mol / 10 L = 0.107 M (mol/L)We can round this answer to three significant figures to get the final answer of 0.101 M (mol/L).
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how many atoms make up a molecule of salt
1?
2?
3?
4?
Answers
Answer: 2
Explanation: a molecule which consists of one atom of sodium and one atom of chlorine: NaCI
What volume of NaOH(aq) would be needed to reach the equivalence point if the concentration of the added base were 0.290 M?
Answers
Answer:
17.2mL are needed
Explanation:
The pH curve for titration of 50.0 mL of a 0.100 M solution of hydrochloric acid
A strong acid as HCl reacts with a strong base as NaOH producing water and a salt. The chemical equation is:
HCl + NaOH → H₂O + NaCl
Where 1 mole of HCl reacts per mole of NaOH
To solve this question we must find the moles of HCl added = Moles NaOH you must add to reach the equivalence point. With these moles and the molar concentration we can find the volume that would be needed as follows:
Moles HCl:
50.0mL = 0.0500L * (0.100moles / L) = 0.00500 moles HCl = Moles NaOH
Volume NaOH:
0.00500 moles NaOH * (1L / 0.290moles) = 0.0172L NaOH =
17.2mL are neededwhat did henry moseley contribute to the periodic table?
Answers
Answer:
In 1913 he used self-built equipment to prove that every element's identity is uniquely determined by the number of protons it has. His discovery revealed the true basis of the periodic table and enabled Moseley to predict confidently the existence of four new chemical elements, all of which were found.
3. How many meters above sea level is the base of your landform?
How many meters above sea level is the top of your platform?
Answers
Answer:
Base is 715 and top is 850.
Explanation:
715 meters above sea level is the base of my landform and 850 meters above sea level is the top of my platform. Base of landform from a sea level is a starting point of a city or region having same topography. This region has a specific height where it spreads we called it top of the platform. The starting point of my location is 715 meters above sea level spreads up to 850 meters of elevation.
SECTION A
For these questions, your equation will be straight forward to balance.
In a titration, 20 cm3 of 2.0 mol dm-3 HCl reacted with 25 cm3 of NaOH. What was the concentration of the sodium hydroxide?
In a titration, 20 cm3 of 0.2 mol dm-3 HCl reacted with 50 cm3 of NaOH. What was the concentration of the sodium hydroxide?
In a titration, 20 cm3 of 0.15 mol dm-3 HCl reacted with 25 cm3 of NaOH. What was the concentration of the sodium hydroxide?
In a titration, 20 cm3 of 1.14 mol dm-3 HCl reacted with 25 cm3 of NaOH. What was the concentration of the sodium hydroxide?
Answers
Answer:
20cm=the length of the causation that it loads about the contrasting of the solution it is an easy question to answer it just has too many parts I answered one and I hope it helped to give you a hint towards solving the whole thing good luck
Explanation:
I tried!
In a titration, 20 cm3 of 2.0 mole dm-3 HCl reacted with 25 cm3 of NaOH. The concentration of the sodium hydroxide is 1.6 mole.
What is titration?Titration is defined as the procedure of determining the quantity of some ingredient of a sample by introducing a precisely known quantity of another substance to the measured sample with whereby the desired ingredient interacts in a predictable manner.
There are basically four type of titration.
Acid base titrationRedox titrationPrecipitation titrationComplex metric titrationM1V1 = M2V2
The concentration of the sodium hydroxide
M2 = M1V1 / V2
M2 = 2.0 x 20 / 25
M2 = 1.6 mole
The concentration of the sodium hydroxide = 0.08 mole
The concentration of the sodium hydroxide = 0.12 mole
The concentration of the sodium hydroxide = 0.912 mole
Thus, in a titration, 20 cm3 of 2.0 mole dm-3 HCl reacted with 25 cm3 of NaOH. The concentration of the sodium hydroxide is 1.6 mole.
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a physical change is change
that
a, forms a substance with new composition
b, results in the formation of new properties
c, results in the formation of new substance
d, does not alther the composition of the substance
Answers
Answer:
The answer is D
Explanation:
All the other options are associated with chemical change
Answer:
D
Explanation:
when we say phisical change it is change of phisical so it does not change the composition because when we say it alther the composition it will be chemical change.
The effective temperature of a star is related to its..
solar system.
luminosity.
absolute magnitude.
color.
Answers
Answer:
color
Explanation:
The effective temperature is directly related to the color of the star: the higher the temperature, the bluer the light emitted by the star.
What pressure, in atmospheres, is exerted by 0.325 mol of hydrogen gas in a 4.08 L container at 35*C?
Answers
Answer: 2.0 atm
Explanation:
PV = nRT
P- the pressure of the gas
V- the volume it occupies
n- the number of moles of gas
R- the universal gas content
T- the absolute temp. of the gas
The pressure, in atmospheres, is exerted by 0.325 mol of hydrogen gas in a 4.08 L container at 35°C is 7.03atm.
What is ideal gas equation?The ideal gas law relates the pressure, volume, temperature, and number of moles of a gas through the equation:
PV = nRT
where P is the pressure in atmospheres, V is the volume in liters (L), n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin (K).
T = 35°C + 273.15 = 308.15 K
Substituting the given values into the ideal gas law equation, we get:
P × 4.08 L = 0.325 mol × 0.08206 × 308.15 K
Simplifying and solving for P, we get:
P = (0.325 mol × 0.08206× 308.15 K) / 4.08 L
P = 7.03 atm
Thus, the pressure exerted by 0.325 mol of hydrogen gas in a 4.08 L container at 35°C is 7.03 atm.
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With the high sedimentation and evaporation rates associated
with most dams and reservoirs, are they really a sustainable and
efficient way to store water?
Answers
Dams and reservoirs can provide reliable water storage but have potential environmental impacts such as habitat loss and disruption of natural flow.
Sedimentation can reduce the storage capacity of reservoirs over time, requiring periodic dredging or desilting to maintain efficiency. Evaporation can lead to water loss from the reservoir, particularly in arid or semi-arid regions with high evaporation rates. These factors need to be carefully managed to ensure the long-term sustainability and efficiency of water storage.
Sedimentation and evaporation are important considerations that need to be managed. Social and economic impacts should also be assessed. Alternative approaches and improved water management practices can enhance sustainability and efficiency. Careful planning, impact assessments, stakeholder engagement, and monitoring are crucial for mitigating negative impacts and maximizing benefits.
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Moving molecules make things? heat up or cool down
Answers
Answer:
Heat up.
Explanation:
The faster molecules move the warmer an object becomes.
For example boiling water, when you boil water the water molecules will be moving extremely fast.
The slower molecules move, the colder an object is. For example an ice cube. All the molecules are only vibrating.
Hope this helps:)
Answer:
Hello!!! Princess Sakura here ^^
Explanation:
When molecules move it makes things heat up.
For example: I'm not sure if you do, but when I where my ring in the winter it gets off easily since my fingers are skinny. But during the summer it takes me awhile to get them off.
Type the correct answer in each box.
Answers
Answer:
1 . 26
2. 55.854
Explanation:
because atomic number is the number of proton in other words smaller number and the mass number is the number of neutrons and electrons in other words bigger number .
hope this make sense :)
Combustion analysis of a 0.3756 g sample containing only c and h yields 1.1385 g of co2 and 0.5805 g of h2o. what is the molecular formula given its molar mass is 58.12 g/mol?
Answers
The molecular formula of the compound is C₄H₁₀.
How can we determine the molecular formula of the compound?To determine the molecular formula, we need to find the empirical formula first and then determine the multiple of the empirical formula using the molar mass given.
1. Determine the moles of carbon and hydrogen:
Moles of CO₂ = mass of CO₂ / molar mass of CO₂ = 1.1385 g / 44.01 g/mol = 0.02587 mol
Moles of H₂O = mass of H₂O / molar mass of H₂O = 0.5805 g / 18.02 g/mol = 0.03219 mol
2. Determine the ratio of moles of carbon and hydrogen:
Carbon: Hydrogen = Moles of CO₂ / Moles of H₂O
Carbon: Hydrogen = 0.02587 mol / 0.03219 mol = 0.8036
3. Determine the empirical formula:
Since the ratio of carbon to hydrogen is approximately 0.8, we can assume there are 1 carbon atom and 2 hydrogen atoms in the empirical formula.
4. Determine the multiple of the empirical formula using the molar mass:
Empirical formula mass = (mass of carbon + mass of hydrogen) = (12.01 g/mol + 1.01 g/mol * 2) = 14.03 g/mol
Multiple = Molar mass of the compound / Empirical formula mass
= 58.12 g/mol / 14.03 g/mol = 4.142
5. Multiply the empirical formula by the multiple to obtain the molecular formula:
Empirical formula: CH₂
Molecular formula = Empirical formula * Multiple
= CH₂ * 4.142 = C₄H₁₀
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