Nitrogen Dioxide is the Answer. If any doubt leave a comment
Sound waves with a large distance between A and B would be sound waves that have a large
es
and produce loud sounds.
Answer:
Wavelength
Explanation:
Pls give me Brainliest
What is the oxidation number of vanadium in V₂O₅?
Answer:
+4
Explanation:
Treatment of the ammonium metavanadate with hot hydrochloric acid partly reduces the vanadium to the +4 oxidation state in the form of the VO2+ ion.
In vanadium oxide we increase both sides by 4. And we discover that x is equal to five. The vanadium's oxidation number is + 5.
What is oxidation ?
Loss of electron is called as oxidation. and addition of oxygen molecule is also the oxidation.
When an object comes into touch with oxygen or another oxidizer, a chemical reaction occurs. Rust and the brown color of a sliced apple are both examples of oxidation.
Antoine Lavoisier used the term "oxidation" to describe the reaction of a material with oxygen. The meaning was later expanded to cover additional reactions in which electrons are lost, regardless of whether oxygen was present, after it was realized that the substance loses electrons when it is oxidized.
Thus, the oxidation number of vanadium in V₂O₅ is + 5.
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The meaning of the word symptom:
The word "symptom" refers to a specific manifestation or indication of a condition, disease, or disorder that is experienced or observed by an individual.
Symptoms are subjective or objective changes in the body's normal functioning that may be recognized as abnormal, uncomfortable, or problematic. Symptoms can manifest in various ways depending on the nature of the underlying condition. They can be physical, such as pain, rash, cough, fever, or fatigue, indicating an illness or injury affecting the body. Symptoms can also be psychological, such as anxiety, depression, or confusion, reflecting disturbances in mental health.
Symptoms serve as important clues for medical professionals to identify and diagnose diseases or disorders. They provide valuable information about the nature, severity, and progression of an illness, helping healthcare providers formulate appropriate treatment plans. Additionally, symptoms may also be important for individuals to self-assess their own health status and seek appropriate medical attention.
It is essential to note that symptoms alone may not provide a definitive diagnosis, as they can overlap across different conditions. Further evaluation, including medical tests and examinations, is often necessary to confirm a diagnosis and determine the appropriate course of action.
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How many Stars are In the Milky way Galaxy
Answer:
100 thousand million stars
Explanation:
Answer:
100 to 400 billion stars
Which statement summarizes the law of superposition? A. The oldest rock is found in the bottom layer of a rock formation. B. The rarest elements are found in the lowest layer of a rock formation. O C. The densest layer of rock in a rock formation is the bottom layer. D. The top layer of rock in a rock formation is the oldest. SUBMIT e
Answer:
A superposition says that the newest rocks are nearer to the surface and oldest are near the bottom
Answer:
A.
Explanation:
A chemist makes 380. mL of magnesium fluoride (MgF2) working solution by adding distilled water to 20.0 mL of a 18.8 L stock solution of magnesium fluoride in water.
Calculate the concentration of the chemist's working solution.
Round your answer to 3 significant digits
Answer:
0.99 μmol/L
Explanation:
From the question given above, the following data were obtained:
Volume of stock solution (V₁) = 20 mL
Concentration of stock solution (C₁) = 18.8 μmol/L
Volume of diluted solution (V₂) = 380 mL
Concentration of diluted solution (C₂) =?
The concentration of the diluted solution can be obtained as follow:
C₁V₁ = C₂V₂
18.8 × 20 = C₂ × 380
376 = C₂ × 380
Divide both side by 380
C₂ = 376 / 380
C₂ = 0.99 μmol/L
Therefore, the concentration of the diluted solution the chemist is working on is 0.99 μmol/L
Use the periodic table or graphic in lesson. Choose the correct electron configuration of carbon. 1s 22s 22p 4 1s 22s 22p 2 1s 22s 22p 1 1s 22s 12p 2
The Correct electron configuration of carbon as 1s² 2s² 2p². Option B.
To understand why this is the correct electron configuration, let's break it down step by step:
The atomic number of carbon is 6, which means it has six electrons. Electrons are distributed in energy levels or shells around the nucleus.
The first shell, known as the 1s orbital, can hold a maximum of 2 electrons. Therefore, the first part of the electron configuration is 1s², indicating that two electrons occupy the 1s orbital.
The second shell has two subshells: the 2s orbital and the 2p orbital. The 2s orbital can hold a maximum of 2 electrons, while the 2p orbital can hold a maximum of 6 electrons. In the case of carbon, after the 1s orbital, two more electrons occupy the 2s orbital. So far, we have 1s² 2s².
The remaining two electrons in carbon are placed in the 2p orbital. The 2p orbital consists of three separate p orbitals: 2px, 2py, and 2pz. Each p orbital can hold a maximum of 2 electrons. Therefore, the last part of the electron configuration for carbon is 2p², indicating that two electrons occupy the 2px and 2py orbitals. Option B is correct.
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In Which State of matter are molecules moving the slowest
A. Solid
B. Liquid
C. Gas
Answer:
Solid
Explanation:
Molecules in solids only vibrate in place, while the other two have moving molecules
7.5 L of a gas at 2 ATM and a temperature of 75°C is changed and volume to 3.4 L and a pressure of .5 ATM what is the new temperature
Answer:
Explanation:
Combined Gas Law
T2= T1P2V2/ (P1V1) = 348.15 X .5 X 3.4/(2 X 7.5) =39.46 K or -233.69C
given the incomplete reaction which compound is represented by x
The compound that is shown as X can be seen in the option labelled C
What is esterification?The process of esterification involves the condensation of an alcohol (or phenol) with an acid to produce an ester. To create the ester bond, the water molecule must be removed from the alcohol and acid (dehydration).
Usually, an acid catalyst is used to catalyze the reaction, which makes it easier to remove water and encourages the creation of the ester. The acid catalyst aids in protonating the acid's carbonyl oxygen, which increases its electrophilicity and makes it more vulnerable to alcohol's nucleophilic attack.
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Which best describes the relationship between population size, carrying capacity, and limiting factors?
O The size of a population usually stays high due to its carrying capacity and limiting factors.
The size of a population usually stays near its limiting factors due to carrying capacity.
The size of a population usually stays near its carrying capacity due to limiting factors. O
The size of a population usually stays low due to its carrying capacity and limiting factors.
The best description of the relationship between population size, carrying capacity, and limiting factors is: "The size of a population usually stays near its carrying capacity due to limiting factors."
Carrying capacity refers to the maximum number of individuals that a particular environment can sustainably support. It represents the limit to which a population can grow given the available resources, such as food, water, and habitat. Limiting factors, on the other hand, are the factors that restrict population growth by reducing birth rates, increasing death rates, or limiting access to resources.As a population approaches its carrying capacity, limiting factors come into play and regulate the population size. These limiting factors can include competition for resources, predation, disease, availability of suitable habitat, and other environmental factors. They act as checks on population growth, preventing it from exceeding the carrying capacity of the ecosystem.
Therefore, the size of a population usually stays near its carrying capacity because the limiting factors ensure that the population does not exceed the available resources and ecological limits of the environment. If the population surpasses the carrying capacity, the limiting factors will intensify, causing a decline in resources and an increase in mortality rates, which ultimately brings the population back towards the carrying capacity.It's important to note that the relationship between population size, carrying capacity, and limiting factors is dynamic and can vary depending on various ecological and environmental factors.
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Which treatment(s) will help remove contaminants from minerals or from the pipes carrying water from a source? you can select more than one (Water Contamination Gizmos) **ONLY ANSWER IF YOU ACTUALLY KNOW ❗️❗️**
answer choices:
Sedimentation
Disinfection
Filtration
Coagulation
Sedimentation, filtration, and coagulation are the treatments that will help remove contaminants from minerals or from the pipes carrying water from a source.
Sedimentation is a process in which suspended particles settle out of water. It is one of the most basic techniques for removing particles from water. As particles settle, they become trapped in the bottom of a container or settle to the ground in an outdoor setting
Filtration is a method of removing particles from a fluid. It is a physical or chemical separation method that separates solids from fluids (liquids or gases) by adding a medium through which only the fluid can pass.
Coagulation is the process of using chemicals to remove contaminants from water. By creating a chemical reaction, coagulation destabilizes particles and causes them to clump together. This helps to remove the contaminants from the water.
Disinfection is the process of eliminating or destroying pathogens that cause infection. Disinfection eliminates harmful microorganisms by destroying or inactivating them. The disinfectant is a chemical or physical agent that is used to destroy or inactivate harmful microorganisms.
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Method A: Dilute 10.00 mL up to 100 mL with a transfer pipet and volumetric flask. Then take 10.00 mL of the dilute solution and dilute it again to 100 mL.
Based on dilution methods, the dilution given is a serial dilution with dilution factor of 1/10.
What is serial dilution?A serial dilution is the stepwise dilution of a substance in solution usually using a constant dilution factor at each step of dilution.
The above dilution step is a serial dilution.
Dilution factor = original volume/final volume.Therefire, the dilution factor of the dilution above is:
initial volume = 10 mL
final volume = 100 mL
Dilution factor = 10/100
Dilution factor = 1/10
Therefore, the dilution given is a serial dilution with dilution factor of 1/10.
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According to Le Châtelier’s principle, does the equilibrium
shift in the direction of products or reactants when N2
is
added to the equilibrium mixture of each of the following
reactions? 110.52
a. 2NH31g2 hv 3H21g2 + N21g2
b. N21g2 + O21g2 hv 2NO1g2
c. 2NO21g2 hv N21g2 + 2O21g2
d. 4NH31g2 + 3O21g2 hv 2N21g2 + 6H2O1g2
According to Le Châtelier’s principle or reactions in chemical equilibrium;
2 NH₃ (g) → 3 H₂ (g) + N₂(g) : addition of N₂ shifts equilibrium to the left
N₂ (g) + O₂(g) → 2 NO (g) : addition of N₂ shifts equilibrium to the right
2 NO (g) → N₂ (g) + O₂ : addition of N₂ shifts equilibrium to the left
4 NH₃ (g) + 3 O₂ (g) → 2 N₂ (g) + 6 H₂O (g) : addition of N₂ shifts equilibrium to the left
What is equilibrium in a chemical reaction?Equilibrium in a chemical reaction refers to the point in a chemical reaction in which the rate of the formation of product from the reactants or the forward reaction is equal to the rate of formation of reactants from products or the backward reaction.
For equilibrium to be achieved in a chemical reaction the reaction must occur in a closed or isolated system.
The condition that occur in a reaction in equilibrium are described by Le Châtelier’s principle which states that for a reaction in equilibrium, the equilibrium position will shift to annul any constraint or change imposed on the system.
Considering the given reactions:
2 NH₃ (g) → 3 H₂ (g) + N₂(g) : addition of N₂ shifts equilibrium to the left
N₂ (g) + O₂(g) → 2 NO (g) : addition of N₂ shifts equilibrium to the right
2 NO (g) → N₂ (g) + O₂ : addition of N₂ shifts equilibrium to the left
4 NH₃ (g) + 3 O₂ (g) → 2 N₂ (g) + 6 H₂O (g) : addition of N₂ shifts equilibrium to the left
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7. What specific information about the atomic structure do the periods and groups give you?
Periods tell you...
Groups tell you...
Considering the definition of period, group and electronic configuration:
Periods tell you the energy level.Groups tell you number of electrons in the last occupied level or valence shell.The elements are arranged in horizontal rows, called periods, and in columns, called groups.
The Electronic Configuration of the elements is the arrangement of all electrons of an element in energy levels and sub-levels (orbitals).
There are 7 energy levels, numbered from 1 to 7, and in which electrons are distributed, logically in order according to their energy level.
Each level is divided into sub-levels. These sub-levels into which each level is divided can be up to 4. These 4 sub-levels are called: s, p, d, f.
The placement of the elements in the periodic table is done taking into account the electronic configuration.
In each period, the elements whose last level of their electronic configuration coincides with the number of the period appear.
On the other hand, in each group appear the elements that present the same number of electrons in the last occupied level or valence shell.
In summary:
Periods tell you the energy level.Groups tell you number of electrons in the last occupied level or valence shell.Learn more:
brainly.com/question/19710066?referrer=searchResults brainly.com/question/20985070?referrer=searchResults brainly.com/question/13980678?referrer=searchResults brainly.com/question/8140611?referrer=searchResults brainly.com/question/21267620?referrer=searchResults brainly.com/question/8001694?referrer=searchResultsA cannonball made of iron has a volume of 110. cm3. What is the mass, in kilograms, of the cannonball?
Answer:
1 cubic centimeter (cu cm) = 0.001 kilogram (kg)
110cm³ =110*0.001=0.11kg
Explanation:
The volume has been the space occupied by the object and substances and uses the derived units. The mass of the iron ball with a volume of 110 cubic centimeters is 0.11kg.
What is volume?
Volume has been the three-dimensional space that an object has been using in space. The volume can be measured differently for the various states of matter in various units. Volume is the physical parameter to measure the states of matter.
The estimation of the volume can be given by density or mass and has been expressed by the various units like liters, milliliters, cubic meters, cubic centimeters, kiloliters, cubic decimeters, gallons, etc.
The unit cubic centimeter can be converted into kilogram (kg) as:
1 cubic centimeter = 0.001 kilogram
Given,
The volume of a cannonball made of iron = 110 cubic centimeters
The unit conversion from cubic centimeter to kg is shown as:
1 cubic centimeter = 0.001 kg
110 cubic centimeters = 0.11 Kg
Therefore, 0.11 kilogram is the mass of a cannonball made of iron.
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What is the molarity 10.0g of Cr(NO3)3 in 325 mL of solution
Answer:
Explanation:
molar mass Cr(NO3)3 = 238 g/mol
Convert 325 ml to liters: 325 mls x 1 L / 1000 mls = 0.325 L
Convert 10.0 g to moles: 10.0 g x 1 mol / 238 g = 0.0420 moles
Molarity = moles/liters = 0.0420 moles / 0.325 L = 0.129 M (3 sig. figs.)
Rank the the following parts of the EMS from shortest wavelength to longest wavelength. Input your answer as a 7 digit number (ex. 7654321)
1. visible light
2. ultraviolet
3. gamma rays
4. radio waves
5. x rays
6. microwaves
7. infrared
The order of the components of the electromagnetic spectrum from shortest wavelength to longest is as follows: 3-5-2-1-7-6-4.
What is electromagnetic spectrum?Electromagnetic spectrum is the entire range of wavelengths of all known electromagnetic radiations extending from gamma rays, to X-rays through visible light, infrared, to radio waves.
The components of the electromagnetic spectrum from order of shortest to longest wavelength is as follows;
Gamma raysX-raysUV radiationVisible lightInfrared lightMicrowavesRadio wavesThis suggests that gamma rays have the shortest wavelength while radio waves have the longest wavelength.
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Help anyone? :) please
Answer:
6. protons, mass number from the atomic number
7. Li= ,
i. red the answers to this chemistry quiz sheet please!
1. decreases.
According to Boyle's Law, the relation between pressure and volume cab be stated as PV = k, where P is the pressure inside the container and V is the volume of the container.
So, pressure and volume are inversely proportional. If volume decreases pressure in the container increases and vice-versa. But this law is obeyed until the temperature and amount of gas remain unchanged.
2. Solids
Only solids are the substances which have fixed volume, changing shape and are not compressible.
3. 22.4 liters
At STP (Standard Temperature and Pressure), one mole of any ideal gas occupies a volume of approximately 22.4 liters.
4. D.
According to the kinetic Molecular Theory, solid's molecules move very quickly with high kinetic energy.
5. direct
Temperature and volume have direct relationship according to ideal gas law equation PV = nRT. We can see that temperature (T) and volume (V) are directly related.
6. Indirect
Pressure and volume have direct relationship according to ideal gas law equation PV = nRT. We can see that Pressure (T) and volume (V) are indirectly related.
7. P1 V1/n1 T1 = P2 V2/n2 T2
As the values V = 0.35 L, T = 18. degree celsius and P = 980 mmHg and constant R = 8.314 J/(mol·K), we can easily find V2 easily.
8. PV = nRT
The ideal gas law equation PV = nRT can be used fing V as the values for P, T, n are given in the problem and R value is a constant.
When Logan opens a new bottle of carbonated beverage, the sudden release of pressure causes the beverage to bubble up and overflow. What could Logan do in the future to prevent the next bottle from overflowing when he opens it
Answer:
When Logan opens a new bottle of carbonated beverage, the sudden release of pressure causes the beverage to bubble up and overflow. What could Logan do in the future to prevent the next bottle from overflowing when he opens it.
Explanation:
This is an application of Boyle's law.
According to Boyle's law:
the volume of a fixed amount of gas is inversely proportional to its pressure at a constant temperature.
\(V \alpha \frac{1}{P}\)
So, if pressure reduces all of a sudden, the volume increases and this causes an overflow of the beverage from the bottle.
To avoid this situation, the pressure inside the bottle should not be released at once. The bottle cap should be opened slowly in such a way that opens a little and then close again open a little and then close like that many times if we do, then pressure inside the bottle goes slowly then, the volume will not increase all of a sudden.
Moles in 75.4g HCCl3
Answer:
0.630 mole
Explanation:
mole = \(\frac{mass}{molar mass}\)
molar mass of \(HCCl_{3}\) = 119.5
moles \(\frac{75.4g}{119.5g/mol}\) = 0.630 mole
An element has three stable isotopes of masses 24, 25, and 26. They exist in abundances of 79%, 10%, and 11%, respectively. What is the average atomic mass, and what is the element? *
Answer:
12 this is your answer
hope you like it
. How many moles of oxygen (O) are in 1 mole of calcium carbonate (CaCO3)?
In 1 mole of calcium carbonate, there are approximately 18.066 x 10^23 moles of oxygen.
To determine the number of moles of oxygen (O) in 1 mole of calcium carbonate (CaCO3), we need to examine the chemical formula of calcium carbonate and identify the number of oxygen atoms present.
The chemical formula of calcium carbonate is CaCO3. In this formula, we have one calcium atom (Ca), one carbon atom (C), and three oxygen atoms (O).
The subscript numbers in the formula indicate the number of atoms for each element. Therefore, we have:
1 calcium atom (Ca)
1 carbon atom (C)
3 oxygen atoms (O)
To calculate the number of moles of oxygen in 1 mole of calcium carbonate, we multiply the number of oxygen atoms (3) by the Avogadro's number, which is approximately 6.022 x 10^23 molecules/mol.
Number of moles of oxygen (O) in 1 mole of calcium carbonate (CaCO3) = 3 moles of oxygen x (6.022 x 10^23 molecules/mol)
Calculating this value, we find:
Number of moles of oxygen (O) in 1 mole of calcium carbonate (CaCO3) ≈ 18.066 x 10^23 moles of oxygen
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A balloon is filled with 266 L of He gas, measured at 38 °C and 0.995 atm. What will its volume be when the temperature is lowered to −76 ° C and the pressure is 0.561 atm?
When the temperature is lowered to -76 °C and the pressure is 0.561 atm, the volume of the balloon will be approximately 179 L.
To solve this problem, we can use the combined gas law equation, which relates the initial and final conditions of a gas sample:
(P1 * V1) / (T1) = (P2 * V2) / (T2)
where P1, V1, and T1 are the initial pressure, volume, and temperature, respectively, and P2, V2, and T2 are the final pressure, volume, and temperature, respectively.
Substituting the given values:
(P1 * 266 L) / (38 + 273.15 K) = (0.561 atm * V2) / (-76 + 273.15 K)
Simplifying the equation:
(0.995 atm * 266 L) / (311.15 K) = (0.561 atm * V2) / (197.15 K)
Solving for V2:
V2 = [(0.995 atm * 266 L) / (311.15 K)] * (197.15 K / 0.561 atm)
V2 ≈ 179 L
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What is the name of the compound Si5F7?
A. Pentasilicon hexafluoride
B. Sulfur fluoride
C. Pentasilicon heptafluoride
D. Silicon fluoride
Answer:
i think sulfur fluoride
How is a polar molecule different from a non-polar molecule?
A.)Polar molecules have charges separated like poles of a magnet.
B.)Polar molecules have charges evenly distributed across their poles.
C.)Polar molecules are attracted to the lipids of the phospholipids of the plasma membrane.
D.)Polar molecules are always larger than non-polar molecules.
The polar molecule different from a non-polar molecule is option A) Polar molecules have charges separated like poles of a magnet.
Polar molecules and non-polar molecules differ in terms of their distribution of electrical charge. This results in an uneven distribution of charge, with one side of the molecule having a slightly positive charge (δ+) and the other side having a slightly negative charge (δ-).
This charge separation occurs when there is an uneven distribution of electrons within the molecule, resulting in a molecular dipole. The positive and negative charges are like the poles of a magnet, with one end being slightly positive (δ+) and the other end slightly negative (δ-).
In contrast, a non-polar molecule has an even distribution of electrons and does not have a significant separation of charges. The electrons are shared equally among the atoms in the molecule, resulting in a neutral overall charge and no distinct positive or negative ends.The correct answer is option A.
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Calculate the pH resulting from mixing 15.00 mL of 0.800 M HIO3 (pKa = 0.77) with 45.00 mL of 0.0200 M NaOH.
Answer:
pH = -0.32
Explanation:
The reaction of HIO₃ with NaOH is:
HIO₃ + NaOH → IO₃⁻ + Na⁺ + H₂O
Moles that react are:
15.00mL = 0.015L * (0.800mol / L) = 0.012 moles HIO₃
45.00mL = 0.045L * (0.0200 mol / L) = 9x10⁻⁴ moles NaOH.
The moles of NaOH that reacts are equal to moles of IO₃⁻, and moles of HIO₃ are:
0.012 mol - 9x10⁻⁴ moles = 0.0111 moles HIO₃
Now, the mixture of a weak acid, HIO₃ and IO₃⁻, its conjugate base, produce a buffer. The pH of the buffer is obtained using H-H equation:
pH = pKA + log [IO₃⁻] / [HIO₃]
Where [] could be taken as moles of each compound.
Replacing:
pH = 0.77 + log [9x10⁻⁴ moles IO₃⁻] / [0.0111 moles HIO₃]
pH = -0.32Yes, it is possible to have negative pH's!
What is the best way to measure the pH of a natural solution while out in a forest?
The best way to measure the pH of a natural solution while out in a forest is to use a portable pH meter or pH test strips specifically designed for field use. These instruments provide accurate and reliable pH measurements and are convenient for outdoor applications.
1. Prepare the necessary equipment: Before heading out to the forest, gather the required tools. You will need a portable pH meter or pH test strips, as well as the necessary reagents or calibration solutions if using a pH meter.
2. Collect the sample: Locate the natural solution you want to measure the pH of, such as a stream, pond, or soil. Use a clean container to collect a representative sample of the solution.
3. Calibrate the pH meter (if applicable): If you are using a portable pH meter, it is essential to calibrate it before taking measurements. Follow the manufacturer's instructions to calibrate the meter using the provided calibration solutions.
4. Conduct the measurement: For pH meters, immerse the electrode into the collected sample. Allow some time for the reading to stabilize, and then record the pH value indicated on the meter's display.
5. Using pH test strips: If you are using pH test strips, dip the strip into the collected sample for the recommended amount of time. Remove the strip and compare the color change with the provided color chart. Determine the corresponding pH value from the chart.
6. Repeat for accuracy: To ensure reliability, repeat the measurement process at least once and compare the results. This step helps confirm the accuracy of your measurements.
7. Record and analyze the data: Note down the pH values obtained and any relevant observations. Analyze the data as needed for your research or monitoring purposes.
By following these steps and using the appropriate equipment, you can effectively measure the pH of a natural solution while in a forest setting.
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The decomposition of potassium chlorate (KClO3) is used as a source of oxygen in the laboratory. How much potassium chlorate is needed to produce 19.4 mol of oxygen?
Answer: 6.47 moles of (KClO3) will be needed
Explanation:
There are 3 atoms of oxygen in each potassium chlorate molecule.
divide the desired number of moles of oxygen by three and you have your answer.