Answer:
The amount of sample remain after 48 years is 12.5 g.
Amount of sample decayed = 100 g- 12.5 g = 87.5 g
Explanation:
Given data:
Half life of Pu²⁴¹ = 14 years
Total amount of sample = 100 g
Sample remain after 42 years = ?
Sample decayed = ?
Solution:
First of all we will calculate the number of half lives.
Number of Half lives = T elapsed / half life
Number of Half lives = 42 years / 14 years
Number of Half lives = 3
At time zero = 100 g
At first half life = 100 g /2 = 50 g
At second half life = 50 g/2 = 25 g
At third half life = 25 g/ 2 = 12.5 g
So the amount of sample remain after 48 years is 12.5 g.
Amount of sample decayed = 100 g- 12.5 g = 87.5 g
Which of these mixtures could be most easily separated by filtration ?
Explanation:
Filtration is a separation procedure where a mixture is gone through a filter that permits one segment to go through uninhibited yet hinders another segment from going through. We can utilize filtration to isolate a mixture of a solid in a fluid or a solid in a gas. When all is said in done this technique sorts by size, with the filter going about as a barrier that permits littler particles to experience, however, holds bigger particles back. Filtration works best when the solute isn't dissolved in the solvent. For example, sand and water can be separated through filtration as the two mixes don't dissolve up with one another. In any case, sugar and water would not be separated through filtration as they break down with one another.Select all that reasons that the reaction contents does not conduct at this low point.
There are too few cations from the base available (Ba+2).
There are too few anions from the acid available (SO4-2).
The water molecules formed are neutral.
It's all three of the answers
Answer:
All of these will be correct, so check-box all of them.
Explanation:
Can i please have brainliest?
Which structure of the respiratory system connects the pharynx to the trachea?
Answer:
Larynx
Explanation:
It is a cartilaginous structure inferior to the laryngopharynx that connects the pharynx to the trachea and helps regulate the volume of air that enters and leaves the lungs.
The larynx, also known as the voice box, is the structure in the respiratory system that connects the pharynx to the trachea. It serves as a conduit for air and also house the vocal cords, playing a crucial role in speech and vocalization.
Explanation:The structure of the respiratory system that connects the pharynx to the trachea is the larynx. The larynx, also known as the voice box, is a short passageway that connects the pharynx (the region that receives air from the nasal cavities and the mouth) to the trachea (the 'windpipe' that leads to the lungs). The larynx not only serves as a conduit for air, it also houses the vocal cords, and thus, plays a crucial role in speech and vocalization.
Learn more about Respiratory System here:https://brainly.com/question/18289690
#SPJ6
how is a mole like a dozen?
Answer:
Answer in explanation.
Explanation:
The mole is a unit for counting 6.02 1023 representative particles. The dozen is used to count 12 items.
The mole is a unit for counting 6.02 1023 representative particles.
The dozen is used to count 12 items
over the course of two years the top layer of soil at a Michigan farm is blown away
For each of the situations below, state whether it describes erosion, weathering, or possibly both.
Answer:
Erosion
Explanation:
The blowing away of the top layer of the soil at a Michigan farm is best described as scenario that shows wind erosion.
Erosion is the removal of the top layer of the earth on which plant grows. In short is the washing away of soil by stream or blowing away by wind.
When soil is blow away, it is a pure case of erosion. The process of erosion usually follows weathering or sometime occurs together with it.
Weathering is the physical disintegration and chemical decomposition of rocks to form sediments and soils.
Often times, the process of weathering and erosion occurs together. It is loose weathering products that are carried away during erosion.
In the soil layer at Michigan, the process of erosion by wind is current taking place by ablation.
Over the course of two years, there has been change in the concentration the top layer of soil at a Michigan farm due to natural forces, leading to potential agricultural challenges.
Erosion of the topsoil layer at a Michigan farm over two years can have detrimental effects on agricultural productivity and the environment. Topsoil is crucial for plant growth as it contains essential nutrients and organic matter. When it is blown away, as in this scenario, farmers face difficulties in cultivating crops as the soil becomes less fertile and less capable of retaining moisture. This can result in reduced crop yields and increased vulnerability to drought conditions.
Furthermore, the erosion of topsoil can lead to environmental issues such as water pollution, as sediment runoff can contaminate nearby water bodies. Soil conservation practices, such as planting cover crops and implementing erosion control measures, are essential to mitigate these negative consequences and maintain the long-term sustainability of the Michigan farm's agricultural activities.
Learn more about concentration here: https://brainly.com/question/35383336
#SPJ3
Jayne's science teacher mixed a clear liquid with a blue liquid in a beaker. After a few minutes there was a white solid at the bottom of the beaker. What is most likely true about the white solid?
A.
It is a new substance with different properties.
B.
It is an organic compound.
C.
It will dissolve in water to form a blue solution.
Two boxes are filled with air. The molecules that make up the air in Box A
have more kinetic energy than those in Box B. What can you say about these
boxes?
Answer:
box a is warmer than box b, so the molecules are moving around a lot more
Compared to size of earth, the atmosphere is very
Answer:
thin
Explanation:
Answer:
very thin
Explanation:
the atmosphere is actually very thin compared to the size of the earth.
using the soubility curve what is the solubilityof nh4cl in 10 mL of water at a temperature of 60 degrees Celsius
Answer:
Please, see attached two figures:
The first figure shows the solutility curves for several soluts in water, which is needed to answer the question.The second figure shows the reading of the solutiblity of NH₄Cl at a temperature of 60°C.Answer: 5.5gExplanation:
The red arrow on the second attachement shows how you must go vertically from the temperature of 60ºC on the horizontal axis, up to intersecting curve for the solubility of NH₄Cl.
From there, you must move horizontally to the left (green arrow) to reach the vertical axis and read the solubility: the reading is about in the middle of the marks for 50 and 60 grams of solute per 100 grams of water: that is 55 grams of grams of solute per 100 grams of water.
Assuming density 1.0 g/mol for water, 10 mL of water is:
[tex]10mL\times 1.0g/mL=10g[/tex]
Thus, the solutibily is:
[tex]10gWater\times 55gNH_4Cl/100gWater=5.5gNH_4Cl[/tex]
Decide whether you agree or disagree with the statement, "New theories in science are
accepted quickly as soon as supporting evidence is reported." Justify your reasoning.
Answer:
Time is relative - and science is still arguing about singlet versus doublet Carbenes; they fought over whether Oxygen was “real”, and refused to believe in Radium until one by one they SAW that drop glow! (And affect photographic film).
Explatnation:
which changes can reach dynamic equilibrium
A- nuclear only
B- chemical only
C- nuclear and physical
D - chemical and physical
Answer:
D - chemical and physical
Explanation:
Only chemical and physical changes can reach the level of dynamic equilibrium. Nuclear reactions cannot reach dynamic equilibrium.
A system is in dynamic equilibrium when the rate of forward reaction is the same as that of backward reaction in a reversible reaction. Nuclear reactions cannot be reversed. Dynamic equilibrium is prominent in chemical reactions. It is commonly found that as a reaction occurs, the backward and forward reactions can reach equilibrium levels. In physical changes, this can also occur when certain conditions of pressure and temperatures are satisfied.which term best describes the physical properties of a rainbow
Answer: meteorological phenomenon
Explanation: Hello, there! A rainbow is a meteorological phenomenon that is caused by reflection, refraction and dispersion of light in water droplets resulting in a spectrum of light appearing in the sky. It takes the form of a multicoloured circular arc. Rainbows caused by sunlight always appear in the section of sky directly opposite the sun.
I hoped i help and im here for any more questions you might have! thankyou!
01:44:44
If a gas is moved from a large container to a small container but its temperature and number of moles remain the same, what
would happen to the pressure of the gas?
O
It would increase.
It would be halved.
It would stay the same
It would slightly decrease
Mark this and retum
Save and Exit
The pressure of the gas would increase.
Explanation:
Using the ideal gas formulae we can evaluate this fact;
P₁V₁/T₁ = P₂V₂/T₂
We can assume that the volume is reduced by half (the T₁ and T₂ will cancel out because they remain constant);
P₁V₁ = P₂ * 0.5V₁
P₁V₁/0.5V₁ = P₂
P₁/0.5 = P₂
You can observe that the pressure will also increase – diving a number by a fraction or decimal number increases the resultant value. In this case, the pressure will increase by 2 fold
Calculate the mass of Cu deposited by the electrolysis of CuCl2 at 4A for 40 minutes.
Answer:
3.16g
Explanation:
Data obtained from the question include:
I = 4A
t = 40mins = 40 x 60 = 2400secs
Q =?
Q = It
Q = 4 x 2400
Q = 9600C
Now let us generate a balanced half equation to determine the number faraday needed to deposit metallic Cu. This is illustrated:
Cu^2+ + 2e —> Cu
From the equation,
2 faraday is needed to deposit metallic cu
1 faraday = 96500C
Therefore 2 faraday = 2 x 96500 = 193000C
Molar Mass of Cu = 63.5g/mol
193000C deposited 63.5g of Cu
Therefore, 9600C will deposit = (9600 x 63.5)/193000 = 3.16g of Cu
can you answer this for me
Answer:
Algebra is an area in mathematics that uses variables, in the forms of letters and symbols, to act as numbers or quantities in equations and formulas. Geometry is an area in mathematics that studies points, lines, varied-dimensional objects and shapes, surfaces, and solids.
Explanation:
It is your own opinion on which is more difficult. In my opinion, Geometry is more difficult.
Answer: I believe they want you to know the variables; and Newton described what? Force, action, mass.
I think you should read the Laws, and see how the variables, those important pieces, are shown in an equation. That will be of real help to you. Get the very basics down in your head (and on paper), and it will be much easier!
Explanation:
Which of the following statements is most likely true about the solubilities of CF4 and CCl2F2 in water? CF4 is soluble in water; CCl2F2 is not. Both CF4 and CCl2F2 are insoluble in water. CF4 is insoluble in water; CCl2F2 is soluble in water. Both CF4 and CCl2F2 are soluble in water.
Answer:
Explanation:
CF4 is insoluble in water; CCl2F2 is soluble in water
According to the concept of solubility,CF₄ is insoluble in water; CCl₂F₂ is soluble in water.
What is solubility?Solubility is defined as the ability of a substance which is basically solute to form a solution with another substance. There is an extent to which a substance is soluble in a particular solvent. This is generally measured as the concentration of a solute present in a saturated solution.
The solubility mainly depends on the composition of solute and solvent ,its pH and presence of other dissolved substance. It is also dependent on temperature and pressure which is maintained.Concept of solubility is not valid for chemical reactions which are irreversible. The dependency of solubility on various factors is due to interactions between the particles, molecule or ions.
Learn more about solubility,here:
https://brainly.com/question/8591226
#SPJ2
is jelly beans substance
Answer:Jelly Beans are a mixture
Explanation:
you cannot separate them
A piece of copper has a temperature of 73.6 C. When the metal is placed in 96.2 grams of water at 17.1 C, the temperature rises by 5.1 C. What is the mass of the metal?
Answer:
103.8 g
Explanation:
When the hot piece of copper is placed in the water at lower temperature, the piece of copper gives off thermal energy to the water; as a result, the temperature of the copper decreases while the temperature of the water increases, until they both reach the equilibrium temperature.
The heat given off by the piece of copper is equal to the heat absorbed by the water, so we can write:
[tex]Q_c=Q_w[/tex]
where:
[tex]Q_w=m_w C_w \Delta T_w[/tex] is the heat absorbed by the water, where
[tex]m_w = 96.2 g[/tex] is the mass of water
[tex]C_w=4.186 J/gC[/tex] is the specific heat of water
[tex]\Delta T_w=5.1C[/tex] is the rise in temperature of the water
Solving,
[tex]Q_w=(96.2)(4.186)(5.1)=2053.7 J[/tex]
[tex]Q_c=m_c C_c (T_c-T)[/tex] is the heat released by the copper, where
[tex]m_c[/tex] is the mass of copper
[tex]C_c=0.385 J/gC[/tex] is the specific heat of copper
[tex]T_c=73.6C[/tex] is the initial temperature of copper
[tex]T=17.1C+5.1C=22.2 C[/tex] is the equilibrium temperature
Solving for the mass,
[tex]m_c=\frac{Q_c}{C_c(T_c-T)}=\frac{2053.7}{(0.385)(73.6-22.2)}=103.8 g[/tex]
The correct answer is the mass of the copper piece is approximately 16.3 grams.
To solve this problem, we can use the principle of conservation of energy, which states that the heat lost by the copper will be equal to the heat gained by the water.
The heat transfer can be calculated using the formula:
[tex]\[ q = mc\Delta T \][/tex]
For the copper piece, the heat lost is given by:
[tex]\[ q_{copper} = m_{copper}c_{copper}(T_{final} - T_{initial,copper}) \][/tex]
For the water, the heat gained is given by:
[tex]\[ q_{water} = m_{water}c_{water}(T_{final} - T_{initial,water}) \][/tex]
Since the heat lost by the copper is equal to the heat gained by the water, we can set the two equations equal to each other:
[tex]\[ m_{copper}c_{copper}(T_{final} - T_{initial,copper}) = m_{water}c_{water}(T_{final} - T_{initial,water}) \][/tex]
Given that [tex]\( T_{final} \)[/tex] is the temperature of the water after the copper is added plus the temperature rise:
[tex](17.1C + 5.1C = 22.2C), \( T_{initial,copper} \) is 73.6C, and \( T_{initial,water} \) is 17.1C,[/tex]we can plug in the values:
[tex]\[ m_{copper}(0.385)(22.2 - 73.6) = (96.2)(4.184)(22.2 - 17.1) \][/tex]
Now, we solve for [tex]\( m_{copper} \)[/tex]:
[tex]\[ m_{copper} = \frac{(96.2)(4.184)(22.2 - 17.1)}{(0.385)(22.2 - 73.6)} \] \[ m_{copper} = \frac{(96.2)(4.184)(5.1)}{(0.385)(-51.4)} \] \[ m_{copper} = \frac{(96.2)(4.184)(5.1)}{(0.385)(-51.4)} \] \[ m_{copper} \approx \frac{(96.2)(4.184)(5.1)}{(-20.163)} \] \[ m_{copper} \approx -16.3 \text{ grams} \][/tex]
Since mass cannot be negative, the negative sign indicates a direction in heat transfer (the copper loses heat), but the magnitude of the mass is what we're interested in.
Therefore, the mass of the copper piece is approximately 16.3 grams.
If 10.00 g of iron metal is burned in the presence of excess of O2 how many grams of Fe2O3 will form
14.292 grams of Fe2O3 is formed when 10 gram of iron metal is burned.
Explanation:
The balanced equation for the reaction is to be known so that number of moles taking part can be known.
The balanced chemical equation is
4Fe + 3[tex]O_{2}[/tex]⇒ 2 [tex]Fe{2}[/tex][tex]O{3}[/tex]
From the given weight of iron to be used for the production of [tex]Fe{2}[/tex][tex]O{3}[/tex], number of moles of Fe taking part in the reaction can be known by the formula:
Number of moles= mass ÷ Atomic mass of one mole of the element.
(Atomic weight of Fe is 55.845 gm/mole)
Putting the values in equation
Number of moles = 10 gm ÷ 55.845 gm/mole
= 0.179 moles
Applying the stoichiometry concept
4 moles of Fe gives 2 Moles of Fe2O3
0.179 moles will produce x moles of Fe2O3
So, 2÷ 4 = x ÷ 0.179
2/4 = x/ 0.179
2 × 0.179 = 4x
2 × 0.179 / 4 = x
x = 0.0895 moles
So from 10 grams of iron metal 0.0895 moles of Fe2O3 is formed.
Now the formula used above will give the weight of Fe2O3
weight = atomic weight × number of moles
= 159.69 grams × 0.0895
= 14.292 grams of Fe2O3 formed.
When 10.00 g of iron metal is burned in the presence of excess O2, 14.30 g of Fe2O3 will form.
Explanation:When iron metal reacts with oxygen in the presence of excess oxygen, it forms iron(III) oxide (Fe2O3). The balanced equation for this reaction is:
4Fe + 3O2 → 2Fe2O3
Using the molar mass of iron, we can calculate the number of moles of iron in 10.00 g:
10.00 g Fe ÷ (55.85 g/mol Fe) = 0.1787 mol Fe
Since the reaction ratio is 4:2, we can calculate the number of moles of Fe2O3 formed:
0.1787 mol Fe × (2 mol Fe2O3 ÷ 4 mol Fe) = 0.0894 mol Fe2O3
Finally, we can convert the number of moles of Fe2O3 to grams:
0.0894 mol Fe2O3 × (159.69 g/mol Fe2O3) = 14.30 g Fe2O3
Learn more about Formation of Fe2O3 here:
https://brainly.com/question/32455941
#SPJ3
The reaction for the decomposition of ammonia can be written as shown below. If a student starts with 21.7 g of ammonia how many grams of hydrogen gas will be produced by the reactions?Why
2NH3 = N2 + 3H2
A. 1.28g
B. 2.55g
C. 3.85g
D. 32.5g
Answer:
Option C. 3.85g
Explanation:
2NH3 <=> N2 + 3H2
Molar Mass of NH3 = 14.0067+ (3x1.0078) = 14.0067 + 3.02352 = 17.03022g/mol
Mass of NH3 from the balanced equation = 2 x 17.03022 = 34.06044g
Molar Mass of H2 = 2x1.00784 = 2.01568g/mol
Mass of H2 from the balanced equation = 3 x 2.01568 = 6.04704g
From the equation,
34.06044g of NH3 produced 6.04704g of H2
Therefore, 21.7 of NH3 will produce = (21.7 x 6.04704)/34.06044 = 3.85g of H2
Methane gas reacts with oxygen in a gas stove.
The reaction can be illustrated by the following equation:
Methane plus Oxygen leads to carbon dioxide plus water.
Identify the role of each substance participating in the reaction.
carbon dioxide:
methane:
oxygen:
water:
Hey there!
CH₄ + 2O₂ → CO₂ + 2H₂O
carbon dioxide: product
methane: reactant
oxygen: reactant
water: product
Methane and oxygen are reactants because they are the substances we start with. They are on the side of the equation that the arrow is pointing away from.
Carbon dioxide and water are products because they are the new substances that are the yields of the equation. They are on the side of the equation that the arrow is pointing towards.
Hope this helps!
Answer:
carbon dioxide: product
methane: reactant
oxygen: reactant
water: product
Explanation:
correct on edg
what is symmetry in chemistry
Answer:
A symmetry element is a line, a plane or a point in or through an object, about which a rotation or reflection leaves the object in an orientation indistinguishable from the original.
Explanation:
Symmetry in chemistry is a mathematical concept applied to molecular and crystalline structures, assisting in classifying molecules, predicting vibrational spectra, and understanding bonding.
Symmetry in chemistry refers to the balance and proportion found in molecular structures and crystals. Though it stems from mathematical concepts, symmetry and group theory serve as fundamental tools in understanding various aspects of chemical behavior.
Chemists leverage these concepts to classify molecular structures, predict vibrational spectra, and assess chemical bonding.
Oxidation is common because?
Which is an example of radiation?
Your car parked in the sun is hot when you return.
Hot air rises and cool air moves in to take its place.
Heated water begins circulating in a fish tank.
An example of radiation is a car that gets hot when parked in the sun, as it involves the transfer of heat via infrared waves emitted by the sun. Heat transfer by radiation does not require a medium and is significantly influenced by the emitting object's surface area and temperature. Hence, option A is correct.
Examples of radiation involve the transfer of heat energy without the need for a medium, such as air, to facilitate the transfer. It occurs through electromagnetic waves, and an example of this is when your car parked in the sun is hot when you return. The sun emits infrared waves that transfer heat to the car's surfaces, warming them even without direct contact. Other forms of heat transfer, like convection and conduction, necessitate the movement of air or physical contact, respectively.
Electromagnetic radiation can come in various forms, including microwaves, infrared radiation, and visible light. The Earth is warmed by the sun through radiation, and even the human body emits thermal radiation. Understanding heat transfer by radiation is essential in many applications, from household heating to climate science. The power of radiation is significantly influenced by the emitting object's surface area and is dramatically affected by its absolute temperature (as per the relationship P × T⁴).
Which factor most directly affects potential energy?
Answer:
Mass, gravitational force and height
Explanation:
Potential energy of body is the energy at rest in a body and it depends on the mass, acceleration due to gravity and height of a body;
Potential energy = mass x gravity x height = mgh
The more the mass, gravity and height of a body, the higher the potential energy a body will posses. This is why a stone at a height has more potential energy than one on the ground.
Hydrogen gas (H2) and oxygen gas (O2) react to form liquid hydrogen peroxide (H2O2). Which statement is true about the reaction?
A.
The same atoms are present, so the chemical properties are the same.
B.
The atoms of the reactants have combined to form a new substance.
C.
The two gases have mixed together, but a new substance has not formed.
D.
The product that is formed has the same physical properties as the reactants.
Answer:
B. The atoms of the reactants have combined to form a new substance.
Explanation:
When hydrogen and oxygen gas combined they form hydrogen peroxide. This is happen through chemical reaction so a new substance is formed. The state of reactant is also different, reactants are present in gaseous form while product is present in liquid form. So option b is correct.
Chemical change:
The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.
These changes are irreversible
These changes occur due to chemical reactions
These may not be observed with naked eye
Example:
Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood
Boiling of egg: that change the chemical composition of protein in the egg .
The reaction of Hydrogen and oxygen:
H 2 (g) + O 2 (g) -------------------------------------> H2O2 (l)
Explanation: The chemical reaction has combined the atoms of hydrogen gas and the atoms of oxygen gas to form a new substance. Since hydrogen peroxide is a different substance, it has different chemical and physical properties. All chemical reactions produce new substances with different chemical and physical properties than the reactants.
There are many different natural resources found in Florida. Florida's climate is warm
and humid with an abundance of solar energy. The state is surrounded by ocean
water and has fertile soil great for farming fruits and vegetables. Half of Florida sana
is covered by trees, ideal for wildlife habitats and the production of paper products.
Florida has a rich source of mineral deposits including: limestone, phosphate and
silicon deposits. Florida is also a source of natural gas and oil.
Which of the following is a nonrenewable resource found in the State of Florida?
C. Phosphate is the non renewable resource found in the state of Florida.
Explanation:
There are so many things made from the non renewable resource, phosphate found in the state of Florida.
It is used in the large scale preparation of fertilizers, that is supplied to the world wide farmers and small amount of the phosphate is utilized to manufacture some of the supplements like soft drinks, tooth paste and vitamins.
Both gas and oil are also non-renewable, since it takes an ample amount of time to regenerate.
A ball has a volume of 5.27 liters and is at a temperature of 27.0°C. A pressure gauge attached to the ball reads 0.25 atmosphere. The atmospheric pressure is 1.00 atmosphere.
Calculate the absolute pressure inside the ball and the amount of air it contains.
The absolute pressure inside the ball is ??? atmospheres
The ball contains ???mole of air
The absolute pressure inside the ball is 1.25atm.
Explanation:
Given-
Volume, V = 5..27L
Temperature, T = 27°C
Gauge Pressure, Pg = 0.25 atm
Atmospheric pressure, Patm = 1 atm
Absolute pressure, Pabs = ?
We know,
[tex]Pabs = Pg + Patm\\\\\\Pabs = 0.25 + 1 atm\\\\Pabs = 1.25atm[/tex]
Therefore, absolute pressure inside the ball is 1.25atm.
Answer:
The absolute pressure inside the ball is 1.25 atmospheres.
The ball contains 0.267 mole of air.
Explanation:
im typing this to trick the algorithm but yeah that's right lol
How much Na2SO4 solution (in L) must be added to initiate the precipitation of CaSO4?
Final answer:
To initiate the precipitation of CaSO4, enough Na2SO4 solution must be added to increase the sulfate ion concentration just above 9.86 × 10-5 M in the presence of 0.50 M Ca2+ ions.
Explanation:
To determine how much Na2SO4 solution is needed to initiate the precipitation of CaSO4, we must consider the solubility product constant (Ksp) of calcium sulfate and the concept of reaction quotient (Q). Calcium sulfate will precipitate when the product of the concentrations of its ions in the solution exceeds its Ksp value. For calcium sulfate, this value is 4.93 × 10-5. The formula to calculate Q for calcium sulfate is Q = [Ca2+][SO42-]. Given that the concentration of Ca2+ ions is 0.50 M, we can rearrange the inequality for [SO42-] to determine the maximum concentration before precipitation occurs:
[0.50 M] [SO42-] < 4.93 × 10-5
[SO42-] < ¹⁹.86 × 10-5 M
To initiate precipitation, we need to add enough Na2SO4 solution to the Ca(NO3)2 solution to increase the sulfate ion concentration just above 9.86 × 10-5 M.
A reaction will occur when CaCl2 is combined with _______. A) F2 B) N2 C) Br2 D) I2
Answer:
A reaction will occur when CaCl2 is combined with F2.
Explanation:
Let us know the terms at first.
Ca- Calcium
Cl2- Chloride, therefore CaCl2 is Ca+ Cl2 and that is calcium chloride.
Now, F2 is fluorine which is a yellow compressed gas.
When CaCl2 combines with F2, it gives out products like CaF2 or calcium fluoride, which is a white crystalline solid in powder form, and Cl or chlorine, which appears as a greenish-yellow compressed liquid gas with a pungent smell.
Here is the equation,
CaCl2+ F2= CaF2+ Cl.
Final answer:
A reaction occurs when CaCl2 is combined with F2, resulting from fluorine's higher reactivity which allows it to displace chlorine in a single-replacement reaction.
Explanation:
A reaction will occur when CaCl2 is combined with F2. This is due to the fact that in the context of a single-replacement reaction, a more reactive halogen (in this case, fluorine) can displace a less reactive halogen (like chlorine in CaCl2) from its compound. The example provided in the supporting information illustrates a similar scenario where the reactivity of fluorine above bromine on the periodic table allows for the replacement to occur, yielding products such as CaF2 and Br2. Therefore, fluorine (F2) is the correct answer.