which mineral would most likely be found in a necklace? graphite, halite, sulfur, or emerald?​

Answer:

84

Explanation:

From the question given above, it is evident that 222 86Rn is emitting alpha particle since the daughter nuclei produced has a mass number lesser than 4 when compared to parent element.

Therefore, the miss value in the equation is 84.

Please see attachment for further details

Based on the calculations, the missing value that will balance the equation is: A. 84.

An alpha decay is a type of nuclear reaction in which the atomic nucleus of a radioactive element emits an alpha particle (helium atom), thereby, producing chemical elements with a different atomic nucleus.

In this exercise, we are given the following nuclear equation with an alpha decay:

²²²R₈₆   -----> ²¹⁸Poₓ + ⁴He₂

For the subscript, we have:

86 - 2 = 84.

Read more on alpha decay here: brainly.com/question/23303931

#SPJ2

Answer:Electric

Explanation: Its right.

Chemical energy results from the burning of wood or gasoline. Therefore, option (C) is correct.

Chemical energy is described as the energy which is stored in the chemical bonds formed in the chemical compounds. It is liberated during the chemical reaction and produces heat as a side-product which is known as an exothermic reaction.

Examples of chemical energy are biomass, natural gas, batteries, petroleum, and coal. When chemical energy is released from a compound, it is transformed into a completely new substance.

While burning wood or fuel, the chemical energy in the wood or gasoline is liberated as heat because of the chemical reaction of oxygen in the air and wood. This kind of chemical reaction is known as a combustion reaction. Combustion reaction converts the chemical energy stored in the wood into light energy and heat.

Therefore, in the burning of wood or gasoline, chemical energy is emitted.

Learn more about chemical energy, here:

https://brainly.com/question/1371184

#SPJ2

The H₂SO₄ (sulfuric acid) and HSO₄⁻ (hydrogen sulfate or bisulfate ion) are considered a conjugate acid-base pair. The correct answer is yes.

H₂SO₄ (sulfuric acid) and  HSO₄⁻ (hydrogen sulfate or bisulfate ion) form a conjugate acid-base pair. In the context of the Bronsted-Lowry theory, an acid donates a proton (H+), while a base accepts a proton. When H2SO4 donates a proton, it becomes  HSO₄⁻.

Conversely, when  HSO₄⁻ accepts a proton, it reforms H₂SO₄. They are interconnected through the transfer of a proton, thus qualifying as a conjugate acid-base pair. This relationship allows for the reversible conversion between the two species through proton transfer reactions. Therefore, yes, H₂SO₄ and HSO₄⁻ are considered a conjugate acid-base pair.

To learn more about Bronsted-Lowry theory visit: https://brainly.com/question/15516010

#SPJ11

The atom's valence electrons experience the greatest effective nuclear charge is the valence electrons in Te. the correct option is 3.

Valence electrons are the electrons that are present in the outer shell of the atoms. These electrons are free electrons to form bonds with the electrons of other atoms.

The element that has fewer valence electrons can easily donate its electron and make the bond with another atom. Its reactivity will be high. If an atom contains many-electron in its outer shell, it will be difficult to donate them.

But if the atom will need just one or two electrons to complete its shell, then its reactivity will be high. Here, the Te will have the greatest effective nuclear charge.

Thus, the correct option is 3. The valence electrons in Te.

To learn more about valence electrons, refer to the below link:

https://brainly.com/question/12717954

#SPJ2

Answer:

129 units cubed

Explanation:

There are ten spaces between 120 and 130, so we can infer that each line represents a change in volume of 1 unit. The volume of the substance in the graduated cylinder looks like it's 1 under 130, so its volume is 129 units.

Hopefully this was helpful! :)

Answer:

0.3M

Explanation:

Find the amount concentration of the anion in a 0.100 mol/L solution of Al(CIO3)3.

FOR EVERY MOLE OF Al(CIO3)3., THERE ARE 3 MOLES OF CIO3.

SO IN A 0.00m SOLUTION, THE CONCENTRATION OF THE ANION

ClO3 IS 3X0.1M = 0.3M

.

P1/T1 = P2/T2, where P1 = 50.0 psi, T1 = 25.00C = 298 K, P2 is the unknown pressure and T2 = 100.00C = 373 K. We can solve for P2 by substituting the values in the equation. 50.0/298 = P2/373, P2 = 62.6 psi.4.

1. According to Boyle's law, pressure is inversely proportional to volume. Hence,P1V1 = P2V2, where P1 = 175 kPa, V1 = 150 mL, P2 = 120 kPa and V2 is the unknown volume of the gas. We can solve for V2 by substituting the values in the equation. 175(150) = 120(V2),  V2 = 218.18 mL2. According to Charles's law, volume is directly proportional to temperature when pressure is constant. Hence,V1/T1 = V2/T2, where V1 = 650 mL, T1 = 300 C = 573 K, V2 is the unknown volume and T2 = 0 C = 273 K. We can solve for V2 by substituting the values in the equation. 650/573 = V2/273, V2 = 291.4 mL.3. According to Gay-Lussac's law, pressure is directly proportional to temperature when volume is constant. Hence,P1/T1 = P2/T2, where P1 = 50.0 psi, T1 = 25.00C = 298 K, P2 is the unknown pressure and T2 = 100.00C = 373 K. We can solve for P2 by substituting the values in the equation. 50.0/298 = P2/373, P2 = 62.6 psi.4.

According to Boyle's law, pressure is inversely proportional to volume. Hence,P1V1 = P2V2, where P1 = 600.0 mm Hg, V1 = 400.0 mL, P2 = 760.0 mm Hg (standard atmospheric pressure) and V2 is the unknown volume of the gas. We can solve for V2 by substituting the values in the equation. 600.0(400.0) = 760.0(V2), V2 = 315.8 mL.5. According to Gay-Lussac's law, pressure is directly proportional to temperature when volume is constant. Hence,P1/T1 = P2/T2, where P1 = 30.0 psi, T1 = 27.00C = 300 K, P2 is the unknown pressure and T2 ranges from -20.00C = 253 K to 50.00C = 323 K.

To calculate the minimum pressure, we substitute the values of P1, T1 and T2 = 253 K in the equation. 30.0/300 = P2/253, P2 = 25.3 psi. To calculate the maximum pressure, we substitute the values of P1, T1 and T2 = 323 K in the equation. 30.0/300 = P2/323, P2 = 32.4 psi. Hence, the extremes of pressure are 25.3 psi and 32.4 psi.6. To solve this problem, we need to use the combined gas law, which states that P1V1/T1 = P2V2/T2, where P1 = 95.5 kPa, V1 = 480 mL, T1 = 37 0C = 310 K, P2 = 101.3 kPa (pressure at STP) and V2 is the unknown volume of the gas. We can solve for V2 by substituting the values in the equation. 95.5(480)/(310) = 101.3(V2)/(273), V2 = 353 mL.7. We can use the ideal gas law, PV = nRT, to solve for the number of moles of hydrogen. P = 105 kPa, V = 1.75 L, T = 23 0C = 296 K, R = 8.314 J/mol K (universal gas constant) and n is the unknown number of moles of hydrogen. We need to convert the pressure from kPa to Pa. P = 105 × 103 Pa. We can solve for n by substituting the values in the equation. (105 × 103) × (1.75)/(8.314 × 296) = 0.0897 mol.8. We can use the ideal gas law, PV = nRT, to solve for the volume of gas. P = 1.12 atm, V is the unknown volume, T = 35 0C = 308 K, R = 0.0821 L atm/mol K (gas constant) and n = 1.5 moles. We need to convert the pressure from atm to Pa. P = 1.12 × 101325 Pa. We can solve for V by substituting the values in the equation. (1.12 × 101325) × V = 1.5 × 0.0821 × 308, V = 45.5 L.

learn more about pressure

https://brainly.com/question/15121300

#SPJ11

Answer:

Tho oil that Syncrude mines from the Athabasca Tar Sands contains large amounts of undesirable sulfur. To remove most of the sulfur, Syncrude uses a chemcial process known as the Claus process, which results in a low-sulfur “sweet” crude oil.

Explanation:i found this online hope it helps

The structure in the figure where an electron transport chain is located is the inner mitochondrial membrane.

The main function of the processes that occur in the inner mitochondrial membrane, specifically in the electron transport chain, is to generate ATP through oxidative phosphorylation.

The electron transport chain is a series of protein complexes embedded in the inner mitochondrial membrane. It plays a crucial role in the final stage of cellular respiration, which is the process by which cells extract energy from nutrients.

During oxidative phosphorylation, electrons are transferred through the electron transport chain from energy-rich molecules such as NADH and FADH2.

As electrons pass through the protein complexes, their energy is gradually released, and protons (H+) are pumped across the inner mitochondrial membrane from the mitochondrial matrix to the intermembrane space. This creates an electrochemical gradient.

The main function of this electron transport and proton pumping is to establish a proton motive force.

The gradient created by the electron transport chain drives the ATP synthase enzyme, located in the inner mitochondrial membrane, to produce ATP from ADP and inorganic phosphate. This process is known as chemiosmosis.

Overall, the electron transport chain in the inner mitochondrial membrane plays a crucial role in generating ATP, the energy currency of the cell, by utilizing the energy stored in the electrons derived from the breakdown of nutrients.

To know more about "Mitochondrial membrane" refer here:

https://brainly.com/question/31797295#

#SPJ11

a) Data:

F = 600 N

t = 1.5 s

The equation for Impulse:

Impulse = I = F x t,

then the change in momentum: pf - pi

Impulse and the change in momentum are related like this:

pf - pi = I = F x t = 600 N x 1.5 s = 900 N.s

Therefore the change in momentum: pf-pi = 900 N.s

b) Velocity (t) = initial velocity + a x t

We can assume initial velocity = 0 m/s

From F = m x a = mass x acceleration, we clear "a",

m = 275 g = 0.275 kg (1 kg = 1000 g)

Then, F/m = a => 600 N/0.275 kg = 2182 m/s^2

Velocity (t) = 0 + 2182 m/s^2 x 1.5 s = 3273 m/s

Velocity = 3273 m/s

Answer:

Extensive properties, such as mass and volume depend on the amount of substance present and are not useful in the identification of a substance. In this experiment, we will use three properties to identify a liquid substance: solubility, density and boiling point.

Answer:

D ) Chemical Change

Explanation:

Answer: Venus is considered the closest planetary neighbor when measuring closest approach, but a new method called the point-circle method may indicate a different closest neighbor when taking time into consideration.

Explanation: Venus is traditionally considered the closest planetary neighbor to Earth due to its closest approach to our planet. However, a new method called the point-circle method, devised by researchers from the University of Alabama, takes time into consideration when measuring distances between planets. This method averages the distance between a bunch of points on each planet's orbit, which may indicate a different closest neighbor. However, this new method is not yet widely accepted and more research needs to be done to confirm its accuracy. It's important to define the term "closest neighbor" in context to avoid confusion.

The pH of the solution after 25.0 mL of KOH has been added to the acid is  10.37.

HCOOH is a weak acid that reacts with KOH (a strong base) to form the HCOO⁻ ion and water:

HCOOH + KOH → HCOO⁻ + H₂O

The balanced chemical equation shows that the stoichiometric ratio of HCOOH to KOH is 1:1, so 25.0 mL of 0.20 M KOH corresponds to the same amount of moles of HCOOH. This means that 25.0 mL of the original 0.35 M HCOOH solution has reacted with the 25.0 mL of 0.20 M KOH solution.

moles of HCOOH remaining = moles of HCOOH initially - moles of KOH added

moles of HCOOH initially = 0.35 mol/L × 0.0250 L = 0.00875 mol

moles of KOH added = 0.20 mol/L × 0.0250 L = 0.00500 mol

moles of HCOOH remaining = 0.00875 mol - 0.00500 mol = 0.00375 mol

The concentration of the remaining HCOOH is:

[ HCOOH ] = moles of HCOOH remaining / volume of solution remaining

= 0.00375 mol / (25.0 mL + 25.0 mL)

= 0.075 M

Now we can use the expression for the dissociation constant of HCOOH to calculate the pH of the solution:

Ka = [ H⁺ ][ HCOO⁻ ] / [ HCOOH ]

We can assume that the HCOO⁻ ion behaves as a weak base and calculate its concentration using the equation:

[ HCOO⁻ ] = Ka / [ HCOOH ]

[ HCOO⁻ ] = (1.77 × 10⁻⁴) / 0.075 ≈ 2.36 × 10⁻³ M

Now we can use the equation for the ionization of water to calculate [ H⁺ ]:

Kw = [ H⁺ ][ OH⁻ ]

1.00 × 10⁻¹⁴ = [ H⁺ ][ 2.36 × 10⁻³ ]

[ H⁺ ] = 4.24 × 10⁻¹¹ M

Therefore, the pH of the solution is:

pH = -log[H⁺] ≈ 10.37

Learn more about solution PH here:

https://brainly.com/question/26424076

#SPJ11

The answer is: Chemical change because gas was released along with a color change, which indicated that copper(II) sulfate pentahydrate was transformed into a different substance.

Answer:

C on Edge

Explanation:

S/o to the person above me, answer is correct.

Answer: 6 miles per hour

Explanation:

When you divide 12/2 to get your speed you will get 6.

When a quantity of N₂O₄ is introduced into a flask at an initial pressure of 2 atm at temp T and after that the N₂O₄ has decomposed to NO₂ and has come to equilibrium, the pressure of N₂O₄ is 1.8 atm. The value of Kp for the process is 0.0889.

For the given reaction equation can be written as

                                    N₂O₄(g)  2NO₂(g)

 Initial(atm)                    2                             0

 Change(atm)                -x                            +2x

 Equilibrium(atm)          2-x                           2x

    Given that

      2-x = 1.8 atm

          x= 0.2 atm

  ∴ Pressure of NO₂(g) at equilibrium = 2x

                                                              = 0.4  atm

                          Kp = P(NO₂(g))² /P( N₂O₄(g))

                                 =(0.4)²/1.8 = 0.0889

Hence, the value of Kp is 0.0889.

Learn more about Kp from the link given below.

https://brainly.com/question/31254566

#SPJ1

Moles of Lithium phosphate : 0.495

Given

6 Li + Zn₃(PO₄)₂ ------- > 2 Li₃PO₄ + 3 Zn

Required

Moles of Lithium phosphate

Solution

moles of Zinc(Ar=65,38 g/mol) :

= mass : Ar

= 48.6 : 65.38

= 0.743

From equation, mol ratio of Zn :  Li₃PO₄ = 3 : 2, so mol  Li₃PO₄ :

= 2/3 x mol Zn

= 2/3 x 0.743

= 0.495

Answer:

Your answer should be B.) C, Si, Ge, Sn! I hope this helps you! :)

Balanced equation

2Al(ClO₃)₃ + 3BaSO₄⇒ Al₂(SO₄)₃ + 3Ba(ClO₃)₂

Given

Word equation

Required

Chemical equation

Solution

Chemical equations can be expressed in

Aluminum chlorate = Al(ClO₃)₃

Barium sulfate = BaSO₄

Aluminum sulfate = Al₂(SO₄)₃

Barium chlorate = Ba(ClO₃)₂

Al(ClO₃)₃ + BaSO₄⇒ Al₂(SO₄)₃ + Ba(ClO₃)₂

2Al(ClO₃)₃ + 3BaSO₄⇒ Al₂(SO₄)₃ + 3Ba(ClO₃)₂

The balanced equation of the given equation would be:

\(2Al(ClO_{3} )_{3} + 3BaSO_{4}\) ⇒ \(Al_{2}(SO4)_{3} + 3Ba(ClO_{3})_{2}\)

Given that,

Aluminum Chlorate  +  Barium Sulfate → Aluminum Sulfate + Barium Chlorate

In chemical form, it would be written as:

\(Al(ClO_{3} )_{3} + BaSO_{4}\) ⇒ \(Al_{2}(SO_{4})_{3} + Ba(ClO_{3})_{3}\)

After balancing the two sides, the equation will read as:

\(2Al(ClO_{3} )_{3} + 3BaSO_{4}\) ⇒ \(Al_{2}(SO4)_{3} + 3Ba(ClO_{3})_{2}\)

Thus, \(2Al(ClO_{3} )_{3} + 3BaSO_{4}\) ⇒ \(Al_{2}(SO4)_{3} + 3Ba(ClO_{3})_{2}\) is the correct answer.

Learn more about "Barium Sulphate" here:

brainly.com/question/20060838

The value of b in the equation \(\( f(t) = 85 \cdot b^t \)\) represents the decay factor of the radioactive substance. To determine the value of \( b \), we can use the information that the half-life of the substance is 21 years.

The half-life of a radioactive substance is the time it takes for half of the substance to decay. In this case, the half-life is 21 years, which means that after 21 years, the amount of the substance remaining will be half of the initial amount.

We can use this information to set up an equation:

\(\(\frac{1}{2} = b^{21}\)\)

To solve for b, we need to take the 21st root of both sides of the equation:

\(\(b = \left(\frac{1}{2}\right)^{\frac{1}{21}}\)\)

Using a calculator, we can evaluate this expression:

\(\(b \approx 0.965\)\)

Therefore, the value of b in the equation \(\( f(t) = 85 \cdot b^t \)\) is approximately 0.965.

Learn more about radioactive from this link:

https://brainly.com/question/1770619

#SPJ11

You are experiencing post-traumatic stress disorder (PTSD) due to the critical stress experienced during the incident.

Post-traumatic stress disorder (PTSD) is a psychological condition that can develop after a person experiences or witnesses a traumatic event. In this scenario, witnessing the roof collapse on a coworker and being trapped under a section of the roof would be considered a traumatic event. The symptoms mentioned, such as replaying the event and experiencing distressing thoughts, are characteristic of PTSD. PTSD can also involve flashbacks, nightmares, hypervigilance, and avoidance of triggers associated with the traumatic event. It is important to seek professional help if you are experiencing symptoms of PTSD, as therapy and support can be effective in managing and recovering from the condition.

Learn more about  PTSD here;

https://brainly.com/question/29915084

#SPJ11

Answer:

+2 charge

Explanation:

The Se element has 6 valence electrons and hence, it requires 2 more electrons to attain stability or we can say that to complete its octet. Therefore, the ion of Se has +2 charge on it.

Plses give me braniliest

The main reservoirs of the carbon cycle are the atmosphere, oceans, land (including vegetation and soils), and fossil fuels. In these reservoirs, carbon exists in both inorganic and organic forms.

The inorganic carbon cycle involves the exchange of carbon dioxide (CO2) between the atmosphere and oceans through processes like photosynthesis and respiration.

Organic carbon, on the other hand, is found in living organisms, dead organic matter, and soil organic matter. It is cycled through processes such as decomposition and consumption by organisms. The interactions between the inorganic and organic carbon cycles occur primarily in the biosphere, where photosynthesis converts inorganic carbon into organic carbon compounds. While inorganic carbon is primarily in the form of CO2, organic carbon is present in complex organic molecules. Both forms of carbon play crucial roles in energy transfer, nutrient cycling, and climate regulation.

Learn more about Carbon Cycle

brainly.com/question/13729951

#SPJ11

The Pb²⁺ ions will precipitate first because Pb(IO₃)₂ has a higher Ksp value than Th(IO₃)₄. Pb(IO₃)₂ will exceed its solubility product constant and precipitate out of solution.


The solubility product constant, or Ksp value, represents the equilibrium constant for the dissolution of a compound in water. It indicates the degree to which a compound can dissolve in water. A higher Ksp value means the compound is more soluble in water, while a lower Ksp value means the compound is less soluble.

In this case, the Ksp value for Pb(IO₃)₂ is\(2.5 x 10^-^1^3\), which is higher than the Ksp value for Th(IO₃)₄, which is \(2.4 x 10^-^1^5\). When IO₃⁻ ions are added to the water sample, they will react with the Pb²⁺ ions to form Pb(IO₃)₂. However, Pb(IO₃)₂ will exceed its solubility product constant and therefore precipitate out of solution.

On the other hand, the Th⁴⁺ ions will not exceed their solubility product constant, and Th(IO₃)₄ will remain in solution. Therefore, the Pb²⁺ ions will precipitate first due to the higher Ksp value of Pb(IO₃)₂ compared to Th(IO₃)₄.

Learn more about equilibrium constant here:

https://brainly.com/question/28559466

#SPJ11

Answer:

The correct answer is c. Your welcome

Because of the attraction forces known as hydrogen bonding, water is referred to as a polar solvent. An attraction between molecules known as a hydrogen bond occurs when partially positive hydrogen atoms are drawn to partially negative F, O, or N atoms.

A hydrogen bond (or H-bond) is a strong electrostatic attraction between an electronegative atom holding a lone pair of electrons, known as the hydrogen bond acceptor, and a hydrogen (H) atom that is covalently attached to a more electronegative "donor" atom or group.

When a hydrogen atom bonds with an electronegative atom, powerful intermolecular forces called hydrogen bonds are produced. The hydrogen bond acceptor's electronegativity will rise, resulting in a stronger hydrogen bond.

To know more about Hydrogen Bond visit:

https://brainly.com/question/10904296

#SPJ4