The missing components in the table to the right
are indicated with orange letters. Complete the
table by filling in the corresponding number(s) or
symbol(s) below.
Element
symbol
# of
proton
S
# of
electron
S
# of
neutron
S
Atomic
mass
Со
B
27
31
58
A
A
49
D
G
115
Ta
С
73
H
181
B
Ba-2
E
F
81
137
С
S-2
16
18
16
I
D
E
F
G
Intro

The mass of chlorine gas product formed is 61.4 g.

What is the mass ?

First, we need to determine which reactant is limiting and which is in excess. To do this, we can use the given mass of HCl and convert it to moles:

63.2 g HCl × (1 mol HCl/36.46 g HCl) = 1.73 mol HCl

Next, we can use stoichiometry to determine how many moles of \(Cl_{2}\) will be produced from 1.73 mol of HCl:

1.73 mol HCl × (2 mol \(Cl_{2}\)/4 mol HCl) = 0.865 mol \(Cl_{2}\)

Finally, we can convert the moles of \(Cl_{2}\) to grams using its molar mass:

0.865 mol \(Cl_{2}\) × (70.91 g \(Cl_{2}\)/1 mol \(Cl_{2}\)) = 61.4 g \(Cl_{2}\)

Therefore, the mass of chlorine gas product formed is 61.4 g.

What is stoichiometry ?

Stoichiometry is a branch of chemistry that deals with the calculation of the quantities of reactants and products involved in a chemical reaction. It involves using balanced chemical equations to calculate the amounts of reactants required to produce a certain amount of product, or the amount of product that can be obtained from a given amount of reactant. Stoichiometry is an important tool for predicting the outcomes of chemical reactions and for designing chemical processes in industry.

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Answer:

kinetic

Explanation:

hope this helps

Answer:

Kinetic energy

Explanation:

If a reaction has a negative ΔG and a positive ΔS, the reaction will be spontaneous at all temperatures.

If a reaction is spontaneous at all temperatures, it implies that the reaction will occur without the need for any external intervention, such as the addition of energy. For a reaction to be spontaneous, it must satisfy the criteria of thermodynamic favorability, which is determined by the change in Gibbs free energy (ΔG) associated with the reaction.

The relationship between ΔG, temperature (T), and the equilibrium constant (K) of a reaction is described by the equation ΔG = ΔH - TΔS, where ΔH is the change in enthalpy and ΔS is the change in entropy.

To ensure spontaneity at all temperatures, two conditions must be met:

ΔG must be negative: A negative ΔG indicates a thermodynamically favorable reaction, meaning the products have a lower Gibbs free energy than the reactants. If ΔG is negative, the reaction will proceed spontaneously in the forward direction.

ΔS must be positive: A positive ΔS signifies an increase in the overall entropy of the system. Higher entropy means more disorder, and spontaneous reactions often involve an increase in randomness. When ΔS is positive, it can compensate for the enthalpic term, ΔH, allowing the reaction to proceed spontaneously.

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An example of heterogeneous equilibrium is:

Heterogeneous equilibrium refers to an equilibrium state in a chemical reaction where the reactants and products exist in different physical states or phases. It occurs when substances in different phases, such as solids, liquids, and gases, are involved in a chemical reaction.

Considering the given equations:

The equation I: FeO(s) + CO(g) ⇌ Fe(s) + CO₂(g) represents a heterogeneous equilibrium.

This is because the reactants and products involve different phases (solid and gas). FeO is a solid (s), CO is a gas (g), Fe is a solid (s), and CO₂ is a gas (g). The reaction involves the conversion of a solid and a gas to another solid and a gas, and the equilibrium is established between these different phases.

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Answer:

D 2,2

Explanation:

We can see that there are 2 chlorines on the reactant side so there has to be a 2 on the product side

Now we have Na + Cl2 --> 2NaCl

The problem now is that there are 2 sodiums on the product side so add a 2 to the Na on the reactant side

2Na + Cl2 --> 2NaCl

Now it's balanced!

Hello!

Answer:

True :P

This problem is providing us with the concentration of an oral suspension of amoxicillin as 200 mg / 5 mL, so the volume per dose is required, taking into account a patient must take 500 mg every six hours. At the end, the result turns out to be 12.5 mL according to:

In chemistry, we use dimensional analysis to calculate a requirement, based on given information to do so. Despite not having a formula for every problem, one can use the units a reference.

For instance, this problem asks for volume yet 200 mg / 5 mL has the volume at the bottom of the proportional factor. This means we need to flip it and then multiply by 500 mg in order to get rid of the milligrams and thus get the volume:

\(V=500mg*\frac{5mL}{200mg} \\\\V=12.5mL\)

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The solid starts melting at 0°C. The heating curve for water shows the temperature changes as heat is added to the substance.

The horizontal flat line on the graph represents the phase change from solid to liquid. In the case of water, this occurs at 0°C. This is known as the melting point, or the temperature at which a substance changes from a solid to a liquid at atmospheric pressure.

It is an important characteristic of a substance and can be used to identify it. It is also important in many industrial processes, such as melting metals for casting. Therefore, understanding the melting point of a substance is crucial in various fields of science and technology.

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Answer:

X. 80°

Explanation:

if the substance is below -38 then it is in the solid phase (-100° and -50°) and if it is above 356° it is a gas (375°). Therefore anything in the middle is a liquid, 80°.

Given that the substance freezes at  –38°C and boils at 356°C, it will be a liquid at  a temperature of 80°C.

The term liqiid range refers to the temperatire range within which a substance remains in its liquid state. Now we are told that the substance freezes at –38°C and boils at 356°C.

Hence, we expect that this substance will be in the liquid state at a temperature of 80°C.

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Answer:the process of dissovlving makes the ecectrons in their atoms more closely bound

Explanation:

thats what my lesson said

The solution of water and salt are good conductor of electricity because the process of dissolving makes the electrons in their atoms free to move.

The correct option is (A).

Pure water and salt are bad conductor of electricity.

But the solution of water and salt is a good conductor because when a salt's dissociated it's ions are free to move about in solution when it dissolves, allowing a charge to flow freely.

Because it includes ions, the resulting solution will conduct electricity.

Thus, option (A) the process of dissolving makes the electrons in their atoms free to move, that's why the solution of water and salt are good conductor of electricity.

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Answer: it's nonmetal

Explanation: Sulfur has characteristics of nonmetals. It does not have luster, it cannot conduct electricity, and it is brittle. On the periodic table, sulfur is in group 16/VIA, in the third period. The group is called the oxygen group or the chalcogens.

Answer:

i dont know

Explanation:

The temperature of the gas in Kelvin, after its volume is reduced to 2,450 mL, is approximately 143.27 K.

To determine the temperature of the gas in Kelvin after its volume is reduced, we can use the combined gas law, which relates the initial and final conditions of pressure, volume, and temperature for a given amount of gas.

The combined gas law equation is:

(P₁ * V₁) / T₁ = (P₂ * V₂) / T₂

Where P₁ and P₂ are the initial and final pressures, V₁ and V₂ are the initial and final volumes, T₁ is the initial temperature in Kelvin, and T₂ is the final temperature in Kelvin.

Given that the initial volume V₁ is 3,480 mL, the initial temperature T₁ is -70.0 °C (which needs to be converted to Kelvin), and the final volume V₂ is 2,450 mL, we can substitute these values into the equation.

To convert -70.0 °C to Kelvin, we add 273.15 to it, resulting in T₁ = 203.15 K.

Now we can solve for T₂:

(T₂ * V₁) / T₁ = V₂

T₂ = (V₂ * T₁) / V₁ = (2,450 mL * 203.15 K) / 3,480 mL

Simplifying the equation, we find:

T₂ ≈ 143.27 K

Therefore, the temperature of the gas in Kelvin, after its volume is reduced to 2,450 mL, is approximately 143.27 K.

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Answer:

Filter it

Explanation:

Concentration of solution having pH 6.45 is 3.55 * 10 -7 M. Concentration of solution having pH 5.28 is 1.90 * 10 -9 M and pH of the solution is 5.45.

pH of a solution is the measure of hydrogen ion concentration, which in turn is a measure of its acidity. Pure water dissociates slightly into equal concentrations of hydrogen and hydroxyl (OH−) ions.

Concentration of a solution is a measure of the amount of solute that has been dissolved in a given amount of solvent or solution. A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute

a.   The pH of a solution is 6.45

     pH = 6.45

     pH= -log [H+]

      = \(10^-6.45\)

    [H+] = 3.55 * 10 -7 M

b. A solution has a pH of 5.28, find the [H+] and [OH-] concentration.

    pH = 5.28

    pH= -log [H+]

    = \(10^-5.28\)

    [H+] = 5.25 * 10 -6 M

    As [H+] [OH-} = 10-14

     [OH-] = 10-14 / [H+]

               = 10 -14 /  5.25 * 10 -6

                = 1.90 * 10 -9 M

   As pH is less than 7 the solution is acidic.

c.  If a solution has a concentration of 3.5 . 10-6 M

    here calculated pH = 5.45

    As pH is less than 7, the solution is acidic.

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Answer:

Sodium becomes a positive ion and chlorine becomes a negative ion. ... Each atom is neutrally charged, which means that each atom has the same number of protons and electrons.

Explanation:

The structural formula of butanol is C4H9OH. It consists of a chain of four carbon atoms, with a hydroxyl (-OH) group attached to one of the carbon atoms. Butanol has several structural isomers, which have the same molecular formula but different structural formulas.

A structural isomer is a compound that has the same molecular formula as another compound but has a different arrangement of its atoms. A string of 4 C atoms are bonded above, below, left, and right to H, except the second C, which is bonded below to O, which is bonded below to H is a structural isomer of butanol.

This is called butan-2-ol. The structural formula of butan-2-ol is CH3CH(OH)CH2CH3. In this isomer, the hydroxyl group is attached to the second carbon atom in the chain, whereas in butanol, the hydroxyl group is attached to the first carbon atom in the chain.

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The final temperature of the water is: T_final = 45.0°C

We can use the formula for the specific heat capacity of the water to solve this problem:

q = mcΔT

First, we can calculate the initial energy of the water:

q = mcΔT

q = (10.0 g) (4.184 J/g°C) (25.0°C)

q = 1,046 J

Next, we can calculate the final temperature after absorbing 840 J:

q = mcΔT

840 J = (10.0 g) (4.184 J/g°C) (ΔT)

ΔT = 20.0°C

Therefore, the final temperature of the water is:

T_final = T_initial + ΔT

T_final = 25.0°C + 20.0°C

T_final = 45.0°C

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Answer: Go back in the Lesson sorry i dont know

Explanation: Well I would X,-,=,+ or Divied but what you mean

Answer:

H2(g) + MgCl2 (aq)

Explanation:

Deuterium (D, or 2H), also known as heavy hydrogen, is an isotope of hydrogen that has a nucleus made up of one proton and one neutron and has a mass twice that of regular hydrogen's nucleus (one proton). The atomic weight of deuterium is 2.014.

Isotopes are atoms with the same number of protons but different numbers of neutrons. They differ in mass, which affects their physical characteristics even though they have nearly identical chemical properties.

The most prevalent element in the universe, hydrogen, has isotopes called deuterium and tritium. All hydrogen isotopes have one proton, but tritium and deuterium also have one neutron each, making their ion masses heavier than those of protium, the only hydrogen isotope without a neutron.

Thus, deuterium,the hydrogen isotope with a mass of 2 amu, to emit light at the same wave lengths as hydrogen.

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Answer:

thunderstrom

Explanation:

it will be answer

Answer:

air mass

Explanation:

A huge volume of air with usually constant temperature and humidity is referred to as an air mass. The properties of an air mass are determined by the place from which it originates. The longer an air mass remains above its originating region, the more damage it causes.

The final pressure in the container if the temperature remains constant is 68.3 kPa.

Given the following data;

To find the final pressure in the container if the temperature remains constant, we would use Boyle's Law:

Mathematically, Boyle's law is given by the formula;

\(P_1V_1 = P_2V_2\)

Where;

Substituting the values into the formula, we have;

\(205\) × \(4 =\) \(12P_2\)

\(820 = 12P_2\\\\P_2 = \frac{820}{12}\)

Final pressure, P2 = 68.3 kPa

Therefore, the final pressure in the container if the temperature remains constant is 68.3 kPa.

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The results of this investigation indicate that the quantity of salt dissolved in water affects how quickly an iron nail rusts.

The steps of the investigation of the rusting of nails are as follows:

Introduction:

Rusting is a common process in which iron reacts with oxygen and water in the presence of an electrolyte to form hydrated iron (III) oxide, commonly known as rust. In this investigation, we will explore how the amount of salt dissolved in water affects the rusting reaction of an iron nail.

Materials:

Iron nail

Water

Salt

3 small beakers

Stopwatch

Paper towels

Procedure:

Fill each beaker with 50 ml of water.

Dissolve different amounts of salt in each beaker as follows:

Beaker 1: 0 grams of salt

Beaker 2: 5 grams of salt

Beaker 3: 10 grams of salt

Place an iron nail in each beaker.

Record the time and observe the nails every hour for 6 hours.

Record your observations and take photos of the nails at the end of each hour.

At the end of the experiment, dry the nails with paper towels and compare their appearance.

Observations:

Beaker 1: No visible rust on the nail throughout the experiment.

Beaker 2: A small amount of rust appeared on the nail after 2 hours. The rust increased over time and covered about 25% of the nail surface after 6 hours.

Beaker 3: A significant amount of rust appeared on the nail after 1 hour. The rust increased rapidly and covered about 80% of the nail surface after 6 hours.

Conclusion:

The results of this investigation suggest that the rusting reaction of an iron nail depends on the amount of salt dissolved in water. When no salt was added to the water, no visible rust appeared on the nail. However, when salt was added, rust appeared on the nail. The amount of rust increased with the amount of salt added, indicating that the rusting reaction is accelerated in the presence of an electrolyte such as salt. This is because the presence of ions in the solution helps to conduct electricity, which facilitates the transfer of electrons between the iron and oxygen molecules, thus accelerating the rusting process.

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The three main causes of erosion, or the removal of soil, rock, and other materials, are wind, water, and ice.

Compared to plate tectonics, landforms are changed much more quickly by earthquakes, weathering, and people, and these changes are frequently visible.

Sand dunes, Loess Deposits, Yardangs, Ventifact, Deflation Hollow or Blowout, and Desert Pavement are among the geological features.

Glaciers carved a collection of strange valleys with flat bottoms and steep walls. Hanging valleys, fjords, and U-shaped valleys are a few examples of the different sorts of valleys that glaciers can destroy.

Alpine glaciers have their origins in the mountains, in a number of our National Parks. When they form in tiny basins with sloping sides, they are referred to as cirque glaciers (cirques).

U-shaped valleys have been found to be produced by glacial erosion. A massive glacier's journey through the landscape leaves imposing traces. Walls of rock blocks are  torn apart by its abrasive force.

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We want to know the initial pressure, given:

V1 = 50L

V2 = 200L

P2 = 0.25 atm

P1 = ?

The following equation will be of use:

P1V1 = P2V2

P1 = (P2V2)/V1

P1 = (0.25atm x 200L)/50L

P1 = 1 atm

The number of atoms of each element is now the same on both sides, so the equation is balanced.

Nothing can be created or destroyed, according to the conservation of matter principle. The quantity of each element's atom in the reactants and the quantity of that same element in the products must match in chemical equations.

As soon as atoms distribute their electrons uniformly, a nonpolar covalent bond is formed. Normally, this happens when two atoms have comparable or identical electron affinities. The greater the attraction, the closer the values of their electron affinities are. This happens in gas molecules, also referred to as diatomic substances.

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Answer:

5 1 2 4and 3 this is correct way