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Drag the tiles to the correct boxes to complete the pairs match the synthetic materials with the processes used to make them.

Option B is correct answer, when TΔS is 3 KJ the reaction is spontaneous reaction.

What is spontaneous reaction?

A spontaneous process in thermodynamics is one that happens without the system receiving any outside input. The time-evolution of a system in which it releases free energy and transitions to a lower, more thermodynamically stable energy state is a more technical definition (closer to thermodynamic equilibrium). Following the general convention for thermodynamic measurements, the sign convention for changes in free energy is as follows: a release of free energy from the system corresponds to a negative change in the system's free energy and a positive change in the surrounding free energy.

The reaction's spontaneity is determined by the Gibbs Free Energy (ΔG) value.

This value is calculated using the following equation, which depicts the link between temperature, entropy (ΔS), enthalpy (ΔH), and the Gibbs free energy (ΔG):

ΔG = ΔH - T(ΔS)

A positive ΔG value represents a non-spontaneous reaction,

A negative ΔG value  represents a spontaneous reaction.

Given ΔH = 2 KJ,

We get ΔG negative only when TΔS is 3 KJ.

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The polarity of a bond can be defined as the degree to which the electrons in a chemical bond are distributed between the two atoms of the bond. Polarity arises from differences in electronegativity, which is a measure of the ability of an atom to attract electrons.

Therefore, changes in electronegativity have an impact on bond polarity. When two atoms with different electronegativities bond, the electrons are attracted to the more electronegative atom. This results in the more electronegative atom having a partial negative charge, and the less electronegative atom having a partial positive charge.

This is known as a polar covalent bond. The greater the difference in electronegativity between the two atoms, the more polar the bond. If the difference in electronegativity between the two atoms is zero, the bond is considered nonpolar. Therefore, as the electronegativity of the atoms in a bond increases, the bond polarity increases.

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Answer:

Rocky road ice cream is an example of a __________Homogeneous___________ mixture.

The mole fraction of methanol is 0.100 in a 78.0-g 78.0-g aqueous solution of methanol, ch4o, ch 4 o. Is  the mass of methanol in the solution is 7.809 g and the mass of water is 39.425 g.

The mole fraction of methanol (CH4O) in the solution is 0.100, which means that 10% of the moles of the solution are methanol. We can use this information, along with the total mass of the solution, to determine the mass of each component.

The total moles of the solution can be calculated by dividing the total mass of the solution by its molar mass. Methanol has a molar mass of 32.04 g/mol, so we have:

total moles of solution = 78.0 g / 32.04 g/mol = 2.434 mol

Now we can calculate the moles of methanol:

moles of methanol = 0.100 x 2.434 mol = 0.2434 mol

The remaining moles are water:

moles of water = 2.434 mol - 0.2434 mol = 2.1906 mol

To calculate the mass of each component, we can use their respective molar masses:

mass of methanol = 0.2434 mol x 32.04 g/mol = 7.809 g

mass of water = 2.1906 mol x 18.02 g/mol = 39.425 g

Therefore, the mass of methanol in the solution is 7.809 g and the mass of water is 39.425 g.

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Explanation:

2H2+O2------->2H2O

its yr balanced equation.

hope it helps

Answer:

The answer is

Explanation:

The density of a substance can be found by using the formula

\(density = \frac{mass}{volume} \\ \)

From the question

mass of object = 30 g

volume = 2 cm³

The density of the object is

\(density = \frac{30}{2} \\ \)

We have the final answer as

Hope this helps you

Answer:

the mass of each element can be recovered from is 162.23 grams

Explanation:

the mass really depends on the volume. If there is 74.0% carbon, 8.6% hydrogen and 17.3% nitrogen then you first cross out the 0 and 3 which leaves you with 17% and 74%. Then all you have to do is multiply 17% and 74% and then divided it by 8.6%.

The various drugs such as the nicotine as additive drug is a pack of cigarette consist of about 75 of the carbon, 8.6% of hydrogen and about 17.3% of mitogen.

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Answer: It would take 300 light years to reach Earth.

Explanation:

Answer:

X = 2-propanol

Y = 2-chloropropane

Z = propene

Explanation:

Secondary alcohol is an alcohol in which the carbon that the functional group (OH group) is attached to is also attached to two alkyl group. Examples are 2-propanol and 2-butanol.

The secondary alcohol referred to in the question here is 2-propanol and it reacts with PCl₅ as seen below

H₃C-CH-CH₃ + PCl₅ ⇒ H₃C-CH-CH₃ + HCl + POCl₃

        |                                     |

       OH                                Cl

The alkylhalide produced there is 2-chloropropane. Thus, we can see that X is 2-propanol and  Y is 2-chloropropane.

When this 2-chloropropane undergoes dehydrohalogenation (removal of hydrogen and halogen) an alkene is formed. The reaction is seen below

H₃C-CH-CH₃   (-HCl)    ⇒  H₃C-CH=CH₂

        |

       Cl

The alkene produced (as seen above) is propene.

Confirmation: When propene undergoes ozonolysis, the compounds produced are ethanal and methanal as seen in the equation below

                                                   O

                                                 /    \

H₃C-CH=CH₂ + O₃  ⇒  H₃C - CH  CH₂    [-O]  ⇒ CH + CH₂  

                                                 ||     ||                     ||        ||

                                                O    O                    O      O

The final products as seen above are methanal and ethanal

Answer:

it is germanium

Explanation:Germanium is a chemical element with the symbol Ge and atomic number 32. It is a lustrous, hard-brittle, grayish-white metalloid in the carbon group, chemically similar to its group neighbours silicon and tin. Pure germanium is a semiconductor with an appearance similar to elemental silicon

The one that is a metalloid is germanium. The correct option is A.

A metalloid is a type of chemical element that has properties that are intermediate between those of metals and nonmetals.

There is no universal definition of a metalloid, and there is no universal agreement on which elements are metalloids.

Metalloid, an imprecise term used in chemistry to describe a chemical element that forms a simple substance with properties intermediate between those of a typical metal and those of a typical nonmetal.

Boron (86), silicon (95), germanium (96), arsenic (100), selenium (23), antimony (88), and astatine are the elements with the highest percentage appearance frequencies as metalloids (40).

Thus, the correct option is A.

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Answer:

Sort of answer, but it'll lead you in the right direction I hope.

Explanation:

I mean, ofc, the molecules or atoms or whatever the circles are can't be put together that way bc matter says so. It looks like the other diagram is showing water or gas, and if it were turning into the one on the right, then it would usually either settle into water if it was gas or become a single solid object like water. If this is gas, then it doesn't make sense, because gas particles are always separate from each other.

Answer: X should represent H, hydrogen.

Explanation:

The H is the only one that hasnt been stated in the left side of the formula. H has three atoms as well.

Answer:

Explanation: The goal of every country should be to produce more materials and goods

The molecular formula of the compound is C2H2O2Cl2.

To determine the molecular formula of a compound with the empirical formula CHOCl and a molecular weight of 129 g, we need to find the actual number of atoms of each element in the compound.The empirical formula CHOCl suggests that the compound contains one carbon (C), one hydrogen (H), one oxygen (O), and one chlorine (Cl) atom.To calculate the molecular formula, we need to compare the empirical formula's empirical mass to the compound's actual molecular weight. The empirical mass of CHOCl can be calculated by adding the atomic masses of the constituent elements: C (12.01 g/mol) + H (1.01 g/mol) + O (16.00 g/mol) + Cl (35.45 g/mol) = 64.47 g/mol.By dividing the molecular weight of 129 g by the empirical mass of 64.47 g/mol, we find that the compound's molecular formula is approximately C2H2O2Cl2.The molecular formula C2H2O2Cl2 indicates that the compound contains two carbon atoms, two hydrogen atoms, two oxygen atoms, and two chlorine atoms. This formula has a molecular weight of approximately 129 g, which matches the given molecular weight.

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We have that the first step is to put the Power source into an on state,Thereby powering the Light point and the Spectrophotometer.

From the question we are told

identify the first step in preparing a spectrophotometer for use.

Generally

This is a device is out there to help scientist i the mostly in the field of chemistry.

Therefore

The first step is to put the Power source into an on state,Thereby powering the Light point and the Spectrophotometer.

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The equation that is correct is TC + or - WCA = TH.  The correct option is

A.

The given equations are related to the magnetic compass errors.

The full form for the  above equation is as follows :

T is the concerning TRUE North  it is use to plotter and the latitude

M is Regarding the MAGNETIC North that is the True North +/- Deviation.

C is  to the COMPASS North that is the Magnetic North +/- Compass card deviation in the system

C is Plotted COURSE in the map that is no wind correction is applied.

The order is as :

TC = True course

VAR = Variation

MC = Magnetic course

WCA = Wind correction angle

MH = Magnetic heading

DEV = Deviation

CH = Compass heading

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A lubricant must keep its properties in the presence of additives and other items. Lubricating oil colours are more of a test for a grade or brand of oil's consistency than they are for its attributes. Thus, option B is correct.

There are four different kinds of liquid lubricants. Mineral oil a. It is a material made from petroleum. These oils are stable at high temperatures because they have a high paraffine and naphthanic content.

Examples include steam cylinder oil, wire rope oil, refrigeration grade oil, gear oil, machine or engine oil, and circulating oil.

Therefore, they should be used at lower cutting speeds than other types of cutting fluids. They make cutting surfaces smoother.

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Answer:

Inertia in our body tends to be in the situation it is. So, we a car comes to a halt, our body wants to keep moving i.e. in motion. hope that helps love!

Answer:

people or scientist tend to observe the nature of the continents that described by jigsaw fit,geological similarity among the continents

The solution at pH 6 is 10 times more acidic than the solution at pH 7.

The solution at pH 11 is 40 times more basic than the solution at pH 7.

Hydronium ion concentration at pH 8 = \(1 * 10^-6\)M

Hydronium ion concentration of pH 7 = \(1 * 10^-7\) M

Thus we have;\(1 * 10^-6 M/1 * 10^-7 M\) = 10

At pH 7, pOH = 7 and hydroxide ion concentration = \(1 * 10^-7\) M

At pH 11, pOH = 3 and the hydroxide ion concentration = \(1 * 10^-3\) M

We then have that; \(1 * 10^-3 M/ 1 * 10^-7\) M = 40

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\(KNO3\) is a strong electrolyte.

Substance that conducts electric current as a result of a dissociation into positively and negatively charged particle called ions, which migrate toward and ordinarily are discharged at the negative and positive terminals (cathode and anode) of an electric circuit, respectively.

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In the modern periodic table, the elements are listed in order of increasing atomic number. The atomic number is the number of protons in the nucleus of an atom. The number of protons define the identity of an element (i.e., an element with 6 protons is a carbon atom, no matter how many neutrons may be present).

Answer:

This equation essentially states that the standard enthalpy change of formation is equal to the sum of the standard enthalpies of formation of the products minus the sum of the standard enthalpies of formation of the reactants. and the standard enthalpy of formation values: ΔH fo[A] = 433 KJ/mol.

Explanation:

Hope this helps.

Answer: \(Hg_2^{2+}(aq)+2NO_3^-(aq)+2Na^+(aq)+2Cl^-(aq)\rightarrow Hg_2Cl_2(s)+2Na^+(aq)+2NO_3^-(aq)\)

Explanation:

A double displacement reaction is one in which exchange of ions take place. The salts which are soluble in water are designated by symbol (aq) and those which are insoluble in water and remain in solid form are represented by (s) after their chemical formulas.  

A double displacement reaction in which one of the product is formed as a solid is called as precipitation reaction.  

The balanced chemical equation is:

\(Hg_2(NO_3)_2(aq)+2NaCl(aq)\rightarrow Hg_2Cl_2(s)+2NaNO_3(aq)\)

The complete ionic equation will be :

\(Hg_2^{2+}(aq)+2NO_3^-(aq)+2Na^+(aq)+2Cl^-(aq)\rightarrow Hg_2Cl_2(s)+2Na^+(aq)+2NO_3^-(aq)\)

Total, 42.37 millimeters of the 0.266 M Lithium nitrate solution are required to make 150 mL of the 0.075 M LiNO₃ solution.

To determine the volume of a 0.266 M LiNO₃ solution required to make 150 mL of a 0.075 M LiNO₃ solution, we can use the equation:

C₁V₁ = C₂V₂

Where;

C₁ = initial concentration of the LiNO₃ solution (0.266 M)

V₁ = volume of the LiNO₃ solution to be measured in millimeters (mm)

C₂ = final concentration of the LiNO₃ solution (0.075 M)

V₂ = final volume of the LiNO₃ solution (150 mL)

Rearranging the equation, we have;

V₁ = (C₂V₂) / C₁

Substituting the given values;

V₁ = (0.075 M) × (150 mL) / (0.266 M)

Converting mL to mm (1 mL = 1 mm), we get:

V₁ = (0.075 M) × (150 mm) / (0.266 M)

Calculating the result;

V₁ ≈ 42.37 mm

Therefore, approximately 42.37 millimeters of the 0.266 M LiNO₃ solution are required to make 150 mL of the 0.075 M  LiNO₃ solution.

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When a solution of NiSO4 is exposed to a 0.2 faraday electrical charge, b. 5.87 g of nickel, Ni is deposited.

The Balanced equation is :

Ni²⁺ + 2e —> Ni

To Determine the mass of the Ni when there is 0.2 farad.

According to the balanced equation,

The molar mass of nickel is 1× 59 \(gmol^{-1}\)

The number of farad =2

(Since, In the balanced equation nickel losses 2 electron. )

2 farad = 59  \(gmol^{-1}\) of nickel

0.2 farad = ?

⇒\(\frac{(59)(0.2)}{2}\)

⇒5.87  \(gmol^{-1}\)  ≈ 5.9  \(gmol^{-1}\)

Nickel is deposited onto a metal component by the technique of nickel electroplating. Before plating can start, parts must be clean and free of debris, corrosion, and flaws. A mixture of heat treating, cleaning, masking, pickling, and etching may be used to prepare and protect the part before plating.

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In comparison to non-polar hydrocarbon dielectrics like gasoline and diesel fuel, methanol is a polar substance like water and has a relatively high conductivity (conductivities less than 1 x 10⁴ pS/m).

Therefore, the self dissociation into ions for methanol and ethanol will be less strong than in water. But even in pure ethanol and methanol solutions, these ions will still exist and conduct electricity, albeit at very low conductivities.

Water's electrical conductivity is a measure of how well it can carry a current of electricity. The amount of electrical current that can be conducted in water increases with the concentration of dissolved charged chemicals, also referred to as salts.

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Answer:

1H, 2H, and 3H.

Explanation: