Property of a metallic solid

The mass of MgSO4, in grams, present in the solution is 240.73 g

Considering the query,

We need to figure out how much MgSO4 there is in the solution, in grammes.

First, we'll calculate how many moles of MgSO4 there are in the 1L stock solution at 2.0 M concentration.

1 L of volume

Using the equation

Number of moles = Volume * Concentration There are 2.0 1 = 2 moles of MgSO4 in the system.

There are 2 moles of MgSO4 in total.

Here is the mass of MgSO4 in grammes.

Using the equation

Molar mass is equal to the product of the number of moles.

Molar mass is equal to the product of the number of moles.

MgSO4's molar mass is 120.366 g/mol. The solution's mass of MgSO4 is equal to 2 120.366 grammes.

The amount of MgSO4 in the solution is 240.73 g.

Consequently, 240.73 grammes of MgSO4 are present in the solution.

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Answer:

QUANTIZATION OF ENERGY- DEFINITION. An electron can radiate or absorb energy as radiation only in limited amounts or bundles called quanta. This is known as the quantization of energy. Quantization is a physical quantity that only has discrete values.

The combustion of hydrocarbons will produce carbon dioxide and water, such as in the burning of methane: CH4 + 2O2 → CO2 + 2H2 O.

Combustion is a high-temperature exothermic redox chemical reaction between fuel and an oxidant, generally atmospheric oxygen, that produces oxidized, gaseous products, in a mixture known as smoke.

General equation for complete combustion reaction is: Fuel + O2 → CO2 + H2O. Burning of charcoal is a combustion reaction or burning of any kind of Wood or Coal to heat your home. Examples of combustion reaction are: car and buses burn petrol or diesel to run or use of natural gas / LPG  on your stovetop.

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The grams of the mercury, Hg can be produced to from 3.55 moles of  Hg is 712 g.

The reaction is given below as :

2HgO  --->   2Hg + O₂

Given that :

The moles of HgO = 3.55 moles

2 moles of the HgO produces the 2 moles of Hg, Therefore the molar ratio is same : HgO : Hg = 2 : 2.

The number of moles of Hg = 3.55 mol

The number of moles = mass / molar mass

3.55 mol = mass / 200.59 g /mol

Mass = 712 g.

Thus , the mass of the Hg produces is 712 g.

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10.2 ml of 5.0 m copper (ii) sulfate solution must be added to 160ml of water. This involves the process of dilution.

A 5.0 m copper(ii) sulfate solution must be added to 160 ml of water to achieve a .30 m copper (ii) sulfate. This is a dilution problem where you are diluting the 5.0 M solution with water to obtain a 0.30 M solution.  

The process of dilution is said to be process that involves decreasing the concentration of a solute in a solution by mixing with more solvent like adding more water to the solution. dilution of a solution means to add more solvent without the addition of more solute.

Volume x Molarity = Volume x Molarity

V1 M1 = V2 M2

(x ml) (5.0 M) = (160 + x ml) (0.30 M)

5x = 48 + 0.3x

4.7x = 48

x = 10.2 ml

putting the value of x we get,

V1 M1 = (10.2) (5.0) = 51

V2 M2 = (170.2) (0.3) = 51

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Option an is the proper answer. An atom of one element differs from another in terms of its number of protons. Protons and electrons coexist in nature in an equal number.

As a result, atoms have no electrical charge. How many protons are there in an atom is what makes it unique. Due to this, one element is different from another. How many protons are in an atom is known as its "atomic number." An element's properties are determined by its electron density. Each element is distinct from the others because they each have a different number of electrons. One of the parts of an atomic nucleus is a proton, which has a mass of one and a charge of one. Protons are denoted by the letters p or p +.

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There are 32 grams of 2.0 moles of CH4. It is calculated from the the molecular mass of methane.

When determining the mass of a given number of moles of a substance, multiply the given moles by the molar mass of the substance. the molar mass of the substance × its atomic weight on the periodic table in grams per mole (g/mole). the mass of a given chemical element or chemical compound (g) divided by the amount of substance (mole). The molar mass of a compound can be calculated by adding the standard atomic masses (in g/mole) of the constituent atoms.

​Molecular mass of methane =16gm

1 mole of CH4 contain 16gm of methane.

Therefore, 2 moles of CH4 contains 32gm of methane.

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False. The General Chemistry stockroom (PS G-106) does not offer PPE (goggles, lab coats, and scrub pants) for rent.

The General Chemistry Store (PS G-106) is a place at the University where students can find the materials needed to complete their General Chemistry classes. This includes reagents, scientific equipment and laboratory materials.

They do not offer personal protective equipment (PPE) such as safety glasses, lab coats and work pants for rent. This is because PPE is generally not used in General Chemistry. Instead, the Stockroom offers solutions, acids and bases, and lab supplies for student use. In addition, students can purchase products such as reagents, laboratory equipment and materials, as well as a variety of reference books.

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(a) The solution has the highest boiling point is 0.12 M Na₂SO₄

(b) The solution has the lowest freezing point is 0.12 M Na₂SO₄

(c) The solution has the highest water vapor pressure is 0.20 M HOCH₂CH₂OH.

Of the four solutions above, we divide them into two groups, namely electrolyte and non-electrolyte solutions.

The boiling point is a colligative property that is determined by the amount of substance. What distinguishes it from non-electrolyte solutions, is the determining factor in calculating the amount of electrolyte solution is the number of decomposed ions and the degree of ionization, known as the van Hoff factor. For strong electrolytes, the van Hoff factor is the same as the number of ions that decompose, because the degree of ionization is 100% or completely ionized.

Take note,

Part A:

The boiling point is directly proportional to the amount of substance. So, the solution that has the highest boiling point with the largest amount of substance is 0.12 M Na₂SO₄

Part B:

Based on the analysis above, it is known that the solution that has the greatest number of solute particles is Na₂SO₄ solution. So that the freezing point is lowest is 0.12 M Na₂SO₄.

Part C:

The solution with the highest vapor pressure is the solution with the smallest mole of solute, namely 0.20 M HOCH₂CH₂OH.

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The molecular weight of  [tex]C{2}[/tex][tex]H_{11}[/tex][tex]O_{3}[/tex] is 83 u.

As given in the question:

the atomic mass of H = 1

the atomic mass of C = 12

the atomic mass of O= 16

To calculate the molecular mass of a molecule, multiply the subscript (number of atoms) by the atomic mass of each element in the molecule and add those masses together. Hence,

Molecular weight= (2 X 12) + (11 X 1) + (3 X 16)

                            = 24+ 11+ 48= 83 u.

Hence the molecular weight is 83 u.

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Answer: 10 neutrons

Explanation: Fluorine-19 is composed of 9 protons, 10 neutrons, and 9 electrons. Its abundance is 100%; no other isotopes of fluorine exist in significant quantities.

✨

An ionic bond is established between zinc and oxygen. Since oxygen only has six electrons in its outer shell and needs eight, it takes two of the Zn's two electrons. Consequently, Zn now possesses a +2 charge.

At the moment, oxygen has a -2 charge. Response to Carter's Question 1 Because of this, an ionic bond is created between the two atoms by electrostatic attraction. The electrostatic attraction of ions with different charges results in the formation of ionic bonds, often referred to as electrovalent bonds, in chemical molecules. These connections are made up of an atom's valence (outermost) electrons. Couple ions Combination of ions ion-to-ion bonding Ionic bonds are often referred to as electrovalent bonds.

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1 pH value where benzoic acid and dibromobenzene would be in different layers in an extraction is 6.

When extracting benzoic acid and dibromobenzene, the most effective separation can be achieved by using a pH value of 6.

At this pH, benzoic acid will remain in the aqueous layer while dibromobenzene will separate out into the organic layer.

This is due to the differences in acidity between the two compounds, with benzoic acid being more acidic than dibromobenzene, thus remaining in the aqueous layer at a lower pH.

At this particular pH value, the benzoic acid will move to the aqueous layer, while the dibromobenzene will move to the organic layer.

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Start with the large circle in the diagram's nucleus, which is identified by the element's atomic number (the number of protons it contains).

Describe the atomic number.

The number of protons in an atom's nucleus is indicated by its atomic number.

2. To represent the electrons, draw circles all around the nucleus. The number of protons in the nucleus is the same as the number of electrons in each shell.

3. Label the circles with the number of electrons to indicate how many electrons are present in each shell.

4. Position the outermost shell furthest from the nucleus.

5. Starting with the innermost shell, electrons fill the other shells.

6. Pairs of electrons fill each shell until

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Create an atom diagram using the Bohr model. Directions Choose three elements from the following list. Use a periodic table to determine the number of protons, neutrons, and electrons. Draw a diagram of each element you have selected. Use a separate piece of paper for each element. Be sure your drawing is neat, legible, and accurate. Use this data table to record information about each element. Element #1 Element #2 Element #3 Element #4

The reaction between the soluble ionic compounds calcium chloride CaCl2 and sodium carbonate Na2CO3  results in calcium carbonate CaCO3, an insoluble solid which precipitates from out solutions, and sodium chloride NaCl2, another soluble ionic component.

Chemical Reaction Type We are experiencing a double replace reaction for this reaction.

When two reactants swap cations or anions to produce two new products, the process is known as a double replacement reaction. Double displacement reactions and metathesis reactions are other names for double replacement processes.

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235.7 g of Sylvanite would be dug up to obtain 66. 0 g of gold.

As stated in the question, Sylvanite contains 28. 0 % gold by mass.

'By mass' is used to express concentration by mass percentage.

Mass percentage = (mass of component / total mass of compound) x 100

Hence, 28g of gold is present in 100g of  Sylvanite.

28g of gold -> 100g Sylvanite

1g of gold -> 100/28 g Sylvanite

66g of gold -> (100*66)/28  g Sylvanite = 235.7 g of Sylvanite.

Hence, 235.7 g of Sylvanite would be dug up to obtain 66. 0 g of gold.

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An acid-base indicator is used in an experiment to determine the pH of a solution. It changes color depending on the acidity or basicity of the solution, indicating whether the solution is acidic, neutral, or basic.

An acid-base indicator is a weak acid or weak base that changes color when it is in an acidic or basic environment. In the acid form, an indicator is one color and in the base form it is another color. Indicators are useful because they allow the experimenter to easily determine the pH of a solution without the need for a pH meter.

In addition, acid-base indicators are used as a visual aid in titrations as well as to determine the endpoint of a titration. This is because the color change of the indicator corresponds to the point at which the acid and base being titrated are present in stoichiometric amounts.

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When the View from Earth is a new moon phase, the View from the Moon would be a full moon.

The Moon is known as the earth's only natural satellite and is the fifth largest satellite in the Solar System and the largest and most massive relative to its parent planet, with a diameter about one-quarter that of Earth.

When we see the moon as nearly full, others on another part of the earth would see a slim crescent Earth.

Whereas when we see a completely full moon, the moon, Earth and sun are said to be in a line – with Earth in the middle.

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During the formation of a solution, the process of dissolving a solute in a solvent is always an exothermic process.

This is because the energy required to break down the solute's intermolecular bonds is greater than the energy released when the solute's particles are surrounded by the solvent particles. As a result, energy is released in the form of heat when the solute is dissolved in the solvent.

The heat released during a solution formation process is affected by several factors including the types of solute and solvent, the concentration of the solute, and temperature.

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The given diagram represents the phase changes of water. The phase in the area A is solid. B is liquid and C represents the gas phase.

The numerous phases of a material or combination of substances that coexist in thermodynamic equilibrium and go through phase changes under varied operating circumstances, such as temperature, pressure, or volume, are graphically represented in a phase diagram.

Three stages make up the water system: ice (S), water (L), and water (G) It is a one-component system as only H₂O is present as a chemical constituent.

The phase A marked in the diagram represents the state at lower temperature and high pressure, it is the solid state of water. Hence, option C is correct.

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They are present in the food and beverages we consume, the clothes we wear, and the air we breathe. Students will get a better understanding of how matter is organized at the atomic level by learning how scientists identify pure substances from mixtures and solutions.

The characteristics of the mixture are determined by the separate elements. Physical techniques can be used to separate the components of the mixture. According on the properties of the constituents, the mixture's melting and boiling points will vary.

All substances can be classified according to their distinct combinations of physical and chemical characteristics. Physical qualities are those that can be ascertained about a substance without altering its chemical makeup.

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The solution becomes a little bit more concentrated?

LiCl is exceptionally soluble in aqueous solution; this site quotes a solubility of 85 ⋅ g of salt in 100⋅mL of water at standard temperatures.

The dissociation constant of alkanes is expressed as its negative base -10 logarithm, or pKa.

The tendency of an alkane to retain a proton at its [H+] ionisation centre is measured by its pKa value. One way to describe how acidic a substance is (in this case, alkanes) is by its pKa value. All alkanes have pKa values above 50, making them essentially inert to acids and bases. Alkenes, alkynes, and other functional groups have lower value than alkanes. For instance, CH4 is a very weak acid (pKa=50). The degree of carbon hybridization in alkanes, the proportion of the character "s," and the electronegativity are all significant indicators of the pKa of alkanes. Some of the factors that affect the pKa value of alkane are sp3 hybridization, electronegativity of carbon and hydrogen etc.

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The correct and complete question is:

Define pKa of alkanes.

Molecules that have more than one type of atom chemically bonded together are called polyatomic molecules or compounds.

These molecules are formed by the chemical combination of two or more elements in a fixed ratio by weight. The elements in a compound are chemically bonded together and have unique properties that are different from the properties of its individual elements. Compounds can be represented by chemical formulas, which specify the ratio of atoms of each element present in the compound. Some examples of polyatomic molecules are water (H2O), Carbon Dioxide (CO2), and Table salt (NaCl). Compounds can be inorganic or organic, and they can be simple or complex.

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Hydrogen gas escape from the chamber containing magnesium.

Magnesium burns in the air and forms magnesium oxide, which is a powdery white substance that emits heat and light, as a result of a reaction with oxygen in the air.

When the magnesium ribbon is burned, it enters the gas jar containing the carbon dioxide and continues to burn. In this process, the carbon dioxide's oxygen atoms join with those of magnesium to form magnesium oxide, which results in the formation of black soot from the carbon and the release of further energy.

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There is one mole in 6.02 X 10²³ atoms of a carbon molecule as mole is the amount of material counting 6.02 X 10²³ particles. This number is also known as Avogadro's Number.

The value of the mole is equal to the number of atoms in exactly twelve grams of pure carbon-12 (C₁₂).

 To find the number of moles present in a molecule/atom when the number of particles are given, you can use the below mentioned formula:

                No. of moles (n) = No. of particles/ Avogadro's Number

Also, to find the number of moles, you must also be aware of the term "Molar mass" which is the mass of 1 mol of atoms of an element. An element's molar mass in g/mol is numerically equal to the element's atomic mass in amu (atomic mass unit).

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the given statement was false cause when the gas law constant R = 0. 0821 was used the temperature should be in K and the volume should be in liters.

define gas law constant ?

In chemistry and physics, "R" is the symbol for the gas constant, molar gas constant, ideal gas constant, or universal gas constant. In numerous equations, it is a proportionality factor that connects energy and temperature scales.

Chemistry's Gas Constant

The gas constant is also known as the ideal gas constant and the universal gas constant in chemistry.

The Boltzmann constant has a molar equivalent.

The gas constant has a SI value of 8.31446261815324 JK1mol1. The number is usually rounded to 8.314.

the given statement was false cause when the gas law constant R = 0. 0821 was used the temperature should be in K and the volume should be in liters.

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Answer: no

Explanation: it is a covalent bond.  ionic bonds exist between and non metal and metal while covalent bonds exist between nonmetals.  Both oxygen and carbon are nonmetals.

The number of chlorine atoms that are present in Ferric chloride are B. 3.

The molecular formula of iron chloride is FeCl3. It is composed of one iron atom and three chlorine atoms. The oxidation state of iron in this compound is +3. In an aqueous solution, this compound is basic or alkaline in nature. The primary use of ferric chloride is to remove impurities in water and for wastewater treatment.  It is a salt of weak base and a strong acid. It is prepared by treating anhydrous iron (III) chloride can be prepared by reacting metallic iron with dichloride.

Thus, the correct option is B i.e., 3 chlorine atoms are present in ferric chloride.

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Answer:

hope it helps <3

Explanation:

Chemical reaction combines the element oxygen with other elements or molecules