Methane (CH4) is a hydrocarbon that is mostly found in natural gas and has a molecular weight of 4.051747moles per 65.0 grams.
What effects has methane on people?Methane concentrations above a certain threshold can affect how much oxygen is breathed in. This can include headaches, face flushing, memory loss, vision issues, slurred speech, mood swings, nausea, and vomiting. Serious cases could result in altered breathing and heart rate, balance issues, numbness, and coma.
Why is methane bad? What is it?The gas methane (CH4) is colorless, odorless, and very combustible. Carbon and hydrogen are its main ingredients. According to us Environmental Protection Agency, it is also a powerful greenhouse gas, meaning means it influences climate change by causing more warming.
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Magnesium acts similar to sodium when forming an ionic bond in terms of losing or gaining electrons.
What is the most likely way in which an atom of magnesium (Mg) will satisfy the octet rule when it forms bonds?
The most likely way in which an atom of magnesium (Mg) will satisfy the octet rule when it forms bonds is by losing two electrons.
What is the octet rule?The octet rule is described as a chemical rule of thumb that reflects the theory that main-group elements tend to bond in such a way that each atom has eight electrons in its valence shell, giving it the same electronic configuration as a noble gas.
The octet rule is held responsible for the relative inertness of the noble gases and the chemical behavior of certain other elements.
Magnesium (Mg) will satisfy the octet rule when it forms bonds is by losing two electrons.
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Answer:
by losing two electrons
Explanation:
I got it right on edge 2023
good luck
This graph shows the displacements and times for the winner of
a horse race.
What was the average speed of the horse that won the race?
O 0.05 m/s
O 20 m/s
O 45 m/s
Just answer 11 and i will mark brainlest
A compound is formed by the combination of two or more different atoms. The white dot and black dot in the image are two different elements which combines together to form the compound AB.
What are compounds?Atoms are the basic units of every substances. Atoms combines to form molecules and molecules combines to form compounds. Thus compounds are chemical substances formed by the combination of different atoms.
For instance two oxygen atoms combines to form O₂ molecule similarly H₂, N₂ etc. can be formed from their respective atoms. When atoms of two different elements combines together they form compounds such as H₂O CO₂ etc.
These compounds can be formed through a specific type of chemical bonding such as ionic bonding, covalent bonding etc. The bond type depends on the nature of bonding atoms.
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A sample of grape juice has a hydroxide ion concentration of 1.4 × 10-10 M. Is the grape juice more or less acidic than a sample of orange juice that has a hydronium ion concentration of 1.8 × 10-4 M? To compare the acidity of the orange juice and grape juice, compare the hydronium ion concentrations and/or pH values of the two solutions. How does the acidity of a solution vary with hydronium ion concentration and pH?
For the grape juice, we get that the hydroxyl ion concentration is 1.4 ×10-10M.
Hence, pOH will be = -log[1.4*10⁻¹⁰] which is approximately 9.6.
Now the value of pH will be = 14-pOH = 14 - 9.6 = 4.4.
For the orange juice, we know that the H+ or hydronium ion concentration is 1.8 × 10-4 M.
Then, the value of the pH will be= -log[1.8*10⁻⁴]=3.7.
Thus from the above result, it is clear that the range juice has lower pH, hence it will be more acidic. While the grape juice will be less acidic.
The pH can either go up or down depending on the change in hydronium concentration. If the hydronium concentration increases, the pH decreases, causing the solution to become more acidic. This happens when an acid is introduced. As H+ ions dissociate from the acid and bond with water, they form hydronium ions, thus increasing the hydronium concentration of the solution. If the hydronium concentration decreases, the pH increases, resulting in a solution that is less acidic and more basic. This is caused by the OH^- ions that dissociate from bases
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Can a chain reaction occur with only one radioactive nucleus? Explain why or why not
Yes, a chain reaction can only be carried out using just one atom.
What is a chain reaction?We know that a chain reaction has to do with the type of reaction in which there is a a continuous self sustaining reaction. In this kind of reaction, there is one radioactive material that is bombarded by a particle such as a neutron. The bombardment of the particle would make the a cycle of reactions to begin which is able to sustain itself.
Given the fact that we only need to have a single radioactive atom that is bombarded for the process of radioactivity to occur tell us that it is a process that requires just one atom.
Take for instance, all we need is one Uranium fuel that would be bombarded with neutrons in order to have a chain reaction that involves uranium.
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Please look at attached image !!!
Ideal gas law is valid only for ideal gas not for vanderwaal gas. Therefore 26.55g of iron is needed to completely consume 18.5L chlorine gas at 25 degree Celsius and 1 atm pressure.
What is ideal gas equation?Ideal gas equation is the mathematical expression that relates pressure volume and temperature.
Mathematically the relation between Pressure, volume and temperature can be given as
PV=nRT
where,
P = pressure of chlorine gas =1 atm
V= volume of chlorine gas =18.5L
n =number of moles of chlorine gas
T =temperature of chlorine gas =298K
R = Gas constant = 0.0821 L.atm/K.mol
1 atm×18.5L= 0.0821×n×298K
1 atm×18.5L=n×24.4
n=0.75mol
mass of chlorine=0.75mol×35.453 g/mol
=26.55g
Therefore 26.55g of iron is needed to completely consume 18.5L chlorine gas at 25 degree Celsius and 1 atm pressure.
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The sun, moon, and planets of the solar system are shown with their orbits.
The loops in Ptolemy’s model, and those shown on the video, are called motion.
This phenomenon is caused by Earth’s orbit than those of other planets.
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Answer: 1 one is B 2 one is C 3 one is A
The sun, moon, and planets of the solar system are shown with their orbits.
The loops in Ptolemy’s
1 one
A retrograde
B geocentric
C retrograde
model, and those shown on the video, are called
2 one
A heliocentric
B geocentric
C retrograde
motion.
This phenomenon is caused by Earth’s
3 one
A faster
B slower
C larger
orbit than those of other planets.
What is the common use of minerals?
Answer:
Make Li-Ion batteries.
Produce commercial electric vehicles.
Create underwater subsea electrification.
Power telecommunication devices.
Explanation:
Minerals are essential raw materials in our daily lives, and are vital for economic, social and technological development. For example, in the following:
Agriculture: Phosphate rock, potash and lime are used in agricultural fertilisers and other mineral products are used to improve soil. The water you drink uses minerals to make it clean.
Construction: About 60 tonnes of aggregate are used to build an average house in the UK. If we include the associated infrastructure, this can be as high as 400 tonnes.
Minerals are used in building houses, schools, libraries, hospitals, offices and shops. Buildings use a wide range of minerals:
iron (as steel) in the framework of large building,
clay in bricks and roofing tiles,
slate for roofing tiles,
limestone, clay, shale and gypsum in cement,
gypsum in plaster,
silica sand in window glass,
sand and gravel and crushed rock as aggregates for fill and in concrete,
copper for plumbing and wiring,
clays for bathroom fixtures and fittings and tiles,
paint may include pigments, extenders and fillers from mineral sources.
Answer: toothpaste
Explanation:
This process combines the analytical techniques of both the mass spectrometer
and the gas chromatograph to separate chemical components of a sample
mixture, detect their presence or absence and then identify the compound.
Gas chromatography-mass spectrometry (GC-MS) is an analytical method that combines both the mass spectrometer and the gas chromatograph to separate the chemical components of a sample mixture to detect the presence and then identify the compound.
What is Gas chromatography-mass spectrometry?Gas chromatography-mass spectrometry (GC-MS) can be described as an analytical method that combines the characteristics of gas chromatography and mass spectrometry to identify various substances within a test sample.
Applications of GC-MS include fire investigation, drug detection, environmental analysis, and identification of unknown samples, including that material samples.
The GC-MS is made of two major blocks: the gas chromatograph and the mass spectrometer. The gas chromatograph uses a capillary column whose features regarding molecule separation depend on the column's dimensions as well as the phase properties.
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An atom is found to have 44 Protons.
What would be necessary to balance out the charge, making it a neutral atom?
For any component: Proton count equals atomic number
Number of protons plus number of electrons equals the atomic number.
The number of neutrons is equal to the atomic number-mass number.
What does atomic number mean?The quantity of protons in an element's atom is known as the atomic number. The atomic number of krypton in our illustration is 36. This indicates that the nucleus of a ruthenium atom contains 36 protons.
Every atom of ruthenium has 44 protons, which is intriguing. A Ruthenium atom cannot exist if it does not have 44 protons. A distinct element is produced by changing the number of protons in an atom's nucleus. An atom of rhodium is produced, for instance, by taking one proton away from a krypton atom.
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When fossil fuels, such as gasoline, are burned, they create smoke. Smoke is best described as a heterogeneous mixture of solid particles from the burning fuel dispersed in a gas – usually air. Smoke can be described more specifically as a suspension.
What will most likely happen over time to smoke in the atmosphere?
A.The solid particles will spread out and dissolve.
b.The particles will eventually come together in a cloud and produce rain.
c.Over time, the solid particles will settle on whatever is outside.
d.The particles will remain mixed in the air.
The most likely will happen to smoke in the atmosphere is over time, the solid particles will settle on whatever is outside (Option C).
What is smoke?Smoke can be defined as any group or mixture of small particles that may be present in different states of matter in the air (i.e., in the solid state, liquid state and or gas state), generally composed of burning fossil fuels or carbon.
Therefore, with this data, we can see that smoke is generally composed of carbon but it is also represented by other types of particles in suspension in the atmosphere.
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In the SI system of units [International System of Units], the mole is one of seven base units. It is frequently used in chemical calculations. However, a mole of something is just a particular quantity of it. It is not a unit of measure in the way that meters, seconds, and kilograms are. Calculations performed with the number of moles of a substance could also be performed with the number of particles of a substance. Based on this information, do you think that the mole should be considered a base unit in the SI system? Explain why or why not.
A Mole should not be considered a base unit in the SI system.
SI system is a metric system which is also known as the International system of units. Most of the measurements across the globe is measured by SI system. SI units are used in nearly every part of the globe, such as science, technology, mathematics and many more. The system includes coherent units known as derived units.
A Mole is not considered as any property of the units and also it is not a base unit.Moles can be considered for chemical and physical comparison.A Mole of a substance can indicate the number of particles of that substance.Learn more about SI system from the link given below.
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Why might a chemist add a buffer to a solution?
The buffer can keep the pH stable when small amounts of acid or base are added.
The buffer can magnify the changes to pH caused by adding small amounts of acid or base.
The buffer changes color to indicate the pH of the solution.
The buffer reacts with the acid or base in solution to form a useful product.
A chemist adds a buffer to a solution because the buffer can keep the pH stable when small amounts of acid or base are added. Thus, Option A is correct.
Buffer is a solution that resists the change in pH when acid or alkali is added in a small amount. Buffer is made up of weak acid and its conjugate base or a weak base and its conjugate acid. It absorbs H+ and OH- ions when strong acid or alkali is added so that the pH remains the same and neutralizes the added acid or alkali. While maintaining the pH of the solution, the pH of the buffer changes in a small amount.
Thus, a chemist adds a buffer to a solution to keep the pH constant when strong acid or base is added.
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The tarnish that forms on objects made of silver is solid silver sulfide; it can be removed by reacting it with aluminum metal to produce silver metal and solid aluminum sulfide according to the reaction,
3Ag2S(s) + 2Al(s) --> 6Ag(s) + Al2S3(s)
How many moles of aluminum are required to remove 0.253 mol of silver sulfide from a silver bowl? Include a road map that shows how you planned the solution.
0.506 moles of aluminum are required to remove 0.253 mol of silver sulfide from a silver bowl.
3Ag2S(s) + 2Al(s) --> 6Ag(s) + Al2S3(s)
2 moles of Al required to make 1 mole Al2S3
1 moles Al2S3= 2 moles Al
0.253 moles Al2S3 = 0.506 moles Al
The mole idea facilitates the measurement of a material's amount. When interacting with particles at the atomic (or molecular) level, it is acknowledged that even a single gram of a pure element has a significant number of atoms. The mole theory is widely used in this context. The most often used unit of measurement is the "mole," which is a count of many particles.
The number 6.02214076*1023, also known as the Avogadro constant, is frequently denoted by the letter "NA". One of the most fundamental entities that may be represented in moles are atoms, molecules, monoatomic and polyatomic ions, as well as other particles (such as electrons).
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50 POINTS!!! PLS ANSWER FAST In each test, iron(II) sulfate and iron(III) nitrate were combined with the same substance or substances. However, the sulfate and nitrate parts of the compounds didn’t participate in any of the chemical reactions; only the iron ions reacted. Comparing the results for each pair of tests, what can you conclude about the iron(II) and iron(III) ions?
Answer:
In each test, iron(II) sulfate and iron(III) nitrate were combined with the same substance or substances. However, the sulfate and nitrate parts of the compounds didn’t participate in any of the chemical reactions; only the iron ions reacted. Comparing the results for each pair of tests, what can you conclude about the iron(II) and iron(III) ions? i need the answer to it please do this
There are various kind of reaction like combustion reaction, displacement reaction. So to solve this problem we must be knowing the displacement reaction. Displacement reaction is taking place over here
What is displacement reaction?
Displacement reaction is a reaction in which one atom replaces other atom from a molecule on the basis of reactivity strength. The element which on the top of reactivity series displace the element that is lying below to that reactive element
According to our question the balanced equation is
FeSO₄+Zn ZnSO₄+Fe(II)
Fe(NO₃)₂+Zn Zn(NO₃)₂+Fe(II)
In both reaction Zn is more reactive than Fe(II) and Fe(III) that is why Zn replace or displace iron ion from its compound of sulfate and nitrate. Metal displace metals. anions are displaced by anions. So, here metal is displaced by zinc.
Thus we can conclude that zinc is more reactive than iron Fe(II) and Fe(III). Displacement reaction is taking place over here
Hope this helps!
I need to know what’s the answer for the check point question on the picture. please help me.
In the combustion of methane the are reactants are CH₄(g) and O₂(g). The products are CO₂(g) and H₂O(g) .
Combustion is process in which the substance react with the oxygen to produce heat. In the combustion of , the methane , CH₄ is burnt in the presence of oxygen, O₂ produce carbon dioxide, CO₂ and water H₂O. it is very useful as fuel source. the chemical reaction is given as follows :
CH₄(g) + 2O₂(g) ----> CO₂(g) + 2H₂O(g) . + heat + light
Thus, In the combustion of methane the are reactants are CH₄(g) and O₂(g). The products are CO₂(g) and H₂O(g).
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How many grams of a 12.5 % sugar solution contain 56.0 g of sugar?
Considering the definition of percentage by mass, 448 grams of a 12.5 % sugar solution contain 56.0 g of sugar
Percentage by massThe percentage by mass expresses the concentration and is defined as the ratio of the mass of the solute to the mass of the solution, expressed as a percentage.
The percentage by mass is calculated as the mass of the solute divided by the mass of the solution, the result of which is multiplied by 100 to give a percentage:
percent by mass= (mass of solute÷ mass of solution)×100%
Mass of sugar solutionIn this case, you know:
percent by mass= 12.5%mass of sugar= 56 gmass of solution= ?Replacing in the definition of percent by mass:
12.5%= (56 g÷ mass of solution)×100%
Solving:
12.5%÷ 100%= 56 g÷ mass of solution
12.5%÷ 100%= 56 g÷ mass of solution
0.125= 56 g÷ mass of solution
0.125× mass of solution= 56 g
mass of solution= 56 g÷ 0.125
mass of solution= 448 g
Finally, the mass of solution is 448 grams.
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Explain how humans hear. Be sure to include the following terms in your response: outer ear, cochlea, eardrum, auditory nerve.
According to research, the ear is a complex organ that meets hearing, being of great importance to humans.
How humans hear?Hearing is a physiological process where sound waves, which are vibrations, enter through the outer ear and reach the middle ear, causing the eardrum to vibrate.
In this sense, the vibrations, in turn, cause the movement of small bones called stirrup, anvil and malleus, where they reach the organ of Corti, stimulating the auditory nerve and finally become nerve impulses that reach the brain.
Therefore, we can conclude that according to research, hearing is a process that implies that sound waves first impact the eardrum until finally reaching the auditory centers of our brain.
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The bond enthalpy of F2(g) is 156.9 kJ/mol. Calculate ΔH o f for F(g).
The bond enthalpy of F2(g) is 156.9 kJ/mole. The ΔH o f for F(g) is 78.5 kJ/ mole.
What is bond enthalpy?Bond enthalpy is defined as the amount of energy needed to dissolve one mole of a certain type of bond between two gaseous atoms. In general, the amount of energy acquired or lost during a reaction is comparable to the process's change in enthalpy.
Given the bond enthalpy of F2 = 156.9 kJ/ mole
The ΔH can be calculated as
ΔH = bond enthalpy of F2 / 2
ΔH = 156.9 kJ/mole / 2
ΔH = 78.5 kJ/mole
Thus, the bond enthalpy of F2(g) is 156.9 kJ/mole. The ΔH o f for F(g) is 78.5 kJ/ mole.
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What is the strength of the final solution of a 20% solution is diluted twice 1:5, then 1:2?
The final solution has a strength of 2%.
Let the initial volume of solution = x unit^3
The solution is initially by 20%
Amount of solute = x*20/100
= x/5 unit^3
Now,
We first diluted by 1:5
1 part of initial solution is diluted with 4 parts of diluent
For 'x' unit^3 solution,
Diluent added = 4x unit^3
Total volume of solution becomes = x+4x
= 5x unit^3
Now,
We diluted by 1:2
1 part of solution is diluted with 1 part of diluent
5x unit^3 of solution is diluted with 5x unit^3 of diluent
Final solution = 5x + 5x = 10x unit^3
Final strength = (Amount of Solute/Final solution)*100%
= (x/5/10x)*100%
= x/50x*100%
= 2%
The final strength of final solution is 2%
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3. Which electromagnetic wave types have frequencies higher than microwaves but lower than
UV radiation?
X-rays and gamma rays have frequencies higher than microwaves but lower than UV radiation.
X-rays and gamma rays are both types of electromagnetic radiation. They are similar in that they are both invisible, travel at the speed of light, and can penetrate human tissue. They differ in their wavelength and energy. X-rays have a shorter wavelength and higher energy than gamma rays
Gamma rays are a type of electromagnetic radiation. They are the most energetic form of electromagnetic radiation. Gamma rays are produced by the most energetic events in the universe, such as supernova explosions and the merging of neutron stars.
X-rays are used in medicine and dentistry because they can penetrate the human body, which Gamma rays cannot.
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Meghan is baking cookies. When she turns the oven on, she notices that the heating coils in the back of the oven start to glow orange. As she opens the oven to place the cookie sheet on the oven rack, she can feel the warmth from the oven. She watches the cookies puff up and turn a golden brown. Read the paragraph that describes energy as Meghan bakes. Choose the word that correctly completes each sentence. Baking cookies in the oven is an example of how energy is . Electrical energy is neither or . Thermal energy either from one object to another as it is transferred or into a different form as it is transformed.
1. Baking cookies in the oven is an example of how energy is conserved.
2. Electrical energy is neither transformed nor transferred.
3. Thermal energy either moves from one object to another as it is transferred or changes into a different form as it is transformed.
Baking is the process of cooking with dry heat, particularly in an oven. It is most likely the oldest type of cooking. Bakery goods including bread, rolls, cookies, pies, pastries, and muffins are typically made with flour or meal that comes from grains of some kind.
The stages of the ingredients originally start out in distinct states (e.g., flour is solid, eggs are liquid, etc.), and they change several times as the cookies bake. When they are combined to create cookie dough, a state known as a colloid results (like a mix between solid and liquid). Eventually, the cookies reach a solid state when baking is.
Thus, Baking cookies in the oven is an example of how energy is conserved . Electrical energy is neither transferred or transformed . Thermal energy either moves from one object to another as it is transferred or changes into a different form as it is transformed.
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Avogadro's constant is the same as the number of
a. magnesium atoms in 24g of magnesium
b. nitrogen molecules in 14g of nitrogen
c. copper II sulfate formula units in 160g of copper II sulfate
Avogadro's constant is the same as the number of copper II sulfate formula units in 160g of copper II sulfate; option C.
What is Avogadro's constant?Avogadro's constant is a number that describes the number of particles in 1 mole of a substance.
The value of the Avogadro constant is 6.02 * 10²³.
The carbon-12 isotope is used as the standard to define the mole of a substance.
12 grams of the carbon-12 isotope contains the Avogadro number of particles which is equal to 6.02 * 10²³.
Hence, 1 mole of a substance is defined as the amount of a substance that contains as many elementary particles as there are in 12 grams of carbo-12.
Considering the given substances:
a. 24g of magnesium off magnesium contains two moles of magnesium atoms.
b. 14g of nitrogen gas contains 0.5 moles of nitrogen gas molecules
c. 160g of copper (ii) sulfate contains 1 mole of copper (ii) sulfate formula units. Hence, this is equal to the Avogadro constant
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Consider an atom of Sulfur. Predict one atom in the same group which is larger than a sulfur atom, and one which is smaller. Using these trends and your understanding of Coulomb's Law, analyze how forces of attraction and repulsion affect the size of an atom.
Explanation:
as the number of shell increased the size of the atom increase but the same shell with different number of valence electron, as electron number increase the attraction between nucleus and valance electron increased then the atom becomes shrinks and so the size of it decreased.
Given that the vapor pressure of water is 17.54 Torr at 20 °C, calculate the vapor-pressure lowering, AP, of an aqueous solution
that is 1.80 m in sucrose (C₁2H₂₂O₁1).And
calculate the vapor-pressure lowering, AP, of an aqueous solution that is 1.80 m in aluminum chloride. Assume 100%
dissociation for electrolytes.
The vapor-pressure lowering, AP, of an aqueous solution is 2.44Torr.
Mole = [tex]\frac{weight}{molecular weight}[/tex]
In a 1.80m (molal) solution, 1 kilogram of the solvent contains 1.80 moles of the solute (which is water in this case).
Water's molar mass is equal to 2(atomic mass of H) + [2(1)+16] (atomic mass of O).
=18g/mol
The mole of water in 1 kilogram (equivalent to 1000 grams)::
[tex]n_{H_{2} O}[/tex]= [tex]\frac{1000}{18g/mol}[/tex] = 55.56mol
The solute's mole fraction in the 1.80 m solution is as follows::
[tex]x_{solute}[/tex] = [tex]\frac{n_{solute} }{n_{H_{2}O }}[/tex]
⇒[tex]x_{solute} =[/tex] [tex]\frac{1.80}{55.56}[/tex] = 0.032
a. Sucrose is a non-electrolyte, i.e., it does not undergo dissociation in the aqueous solution.
As a result, the Van't Hoff factor for sucrose is = i = 1
The lowering in vapor pressure of the solution, which is 1.80m in sucrose:
=[tex]ix_{solute}p^{0}[/tex]
=(1)(0.032)(17.54)Torr
=(0.56)Torr
b. Aluminum chloride dissociate in water as follows:
[tex]AlCl_{3}[/tex] →[tex]Al^{3+}+ 3Cl^{-}[/tex]
As a result, an aqueous solution containing one aluminum chloride particle yields four more particles.
Thus, i=4
The lowering in vapor pressure is thus:
=[tex]ix_{solute}p^{0}[/tex]
=(4)(0.032)(17.54)Torr
=(2.24)Torr
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Using the table from the previous question determine which substance would sink if placed in the pan of mercury.
Iron
Copper
Lead
Gold
All of them
Any object which have less density than the mercury will float in it and which have higher density will sink on it. Here, gold has higher density than mercury. Thus it will sink on mercury.
What is density?Density of a substance is the measure of its mass per volume. Thus it says about how much denser the substance is in a specific volume. The ratio of density of an object to the density of water is called specific gravity.
The density of mercury is 13.4 g/ml. Any object which is less dense than mercury will float on its surface whereas, objects which have higher density than mercury will sink on it.
The density of gold is 79.3 g/ml. All other given metals iron, lead and copper have a density less than that of mercury. Hence the substance which sink on mercury is gold. Option Dis correct.
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Hi, can someone please help me find out what the compound names are for each of these.. thank you!! kindly appreciate it (:
The organic nomenclature of the condensed structural compound is 1. Octane.
1. Octane
2. But - 2- ene
3. ethylene
4. Penatne
5. But - 2 - yne
6. hept 1 - yne
7. Hexx-2 - ene
8. But -1 - yne
In chemical nomenclature, the IUPAC nomenclature of organic chemistry is a method of naming natural chemical compounds as recommended by using the global Union of natural and applied Chemistry. it is posted inside the Nomenclature of Organic Chemistry.
The name of the organic compound is written out with the substituents in alphabetical order observed via the bottom call (derived from the wide variety of carbons in the discern chain). Commas are used among numbers and dashes are used between letters and numbers. There are no spaces inside the call.
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To what volume should you dilute 35 mL of a 12 M stock HCl solution to obtain a 0.500 M
HCl solution?
Volume should you dilute 35 mL of a 12 M stock HCl solution to obtain a 0.500 M is 840 mL,
Given that :
Molarity of the solution M1 = 12 M
volume of the solution V1 = 35 mL
Molarity of the solution after the dilution M2 = 0.500 M
volume of the solution after the dilution V2 = ?
the dilution law states that :
M1 V1 = M2 V2
12 × 35 = 0.500 × V2
V2 = 840 mL
Thus, Volume should you dilute 35 mL of a 12 M stock HCl solution to obtain a 0.500 M is 840 mL.
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I need help with #2 please
Answer:
Third choice
Explanation
Because reactivity of the elements decrease across the periodic table and it depends on the number of protons it has. Hence low number of protons more reactive.
Which element would be expected to have properties similar to antimony
Answer:
N, P, As, Bi, Mc
Explanation:
Similar chemical properties are usually found within the same column of the periodic table.
Antimony is Sb, which is in column 15.
Therefore all the elements in column 15, including N, P, As, Bi, Mc, should have similar chemical properties
