5
Use this equation for the next question.
Mg(OH)2 + NaCl ® MgCl₂ + NaOH
Does it satisfy the Law of Conservation of Matter?
Yes
No

Reaction Ni²⁺(aq) + 6NH₃(aq) ⇌ [Ni(NH₃)₆]²⁺ will experience a shift towards the products in equilibrium position when the concentration of Ni²⁺ is increased.

According to Le Chatelier's Principle: When the equilibrium is stressed, the response changes to relieve the stress. This means that adding a reactant moves the equilibrium away from the reactant to the right. Adding a product moves the equilibrium away from the product and to the left.

Equilibrium type:

As the concentration of Ni²⁺(aq) increases, the system attempts to reach equilibrium by reducing the increased coefficient according to Le Chatelier's principle. To do this, the concentration of Ni²⁺(aq) must be lowered. Therefore, it is necessary to lower the Ni²+(aq) concentration by promoting forward reaction.

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The given question was incomplete so the complete question is as follows:

Which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of Ni2+ is increased? View Available Hint(s) Which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of is increased?

Ni(OH)₂(s)⇌Ni²⁺(aq)+2OH⁻(aq)

[Ni(H2O)₆]²⁺(aq)+3En(aq)⇌[Ni(En)₃]²⁺(aq)+6NH₃(aq)

Ni²⁺(aq)+6NH₃(aq)⇌[Ni(NH₃)₆]²⁺

NiS(s)⇌Ni²⁺(aq)+S²⁻(aq)

While determining the volume during this experiment .if the total volume of the flask were incorrectly reported as 125 ml,  this error affect the calculated molar mass of the unknown volatile liquid. yes

The number of mole calculated by the following formula :

number of moles = mass / molar mass

greater the number of number of moles low the molar mass.

the ideal gas equation is given as :

P V = n RT
and the volume is directly proportional to moles . if the volume increases molar mass decreases.

Thus, While determining the volume during this experiment .if the total volume of the flask were incorrectly reported as 125 ml,  this error affect the calculated molar mass of the unknown volatile liquid. yes

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The time taken to deposits one mole of silver if a current of 6 ampere is passed through the silver trioxonitrate solution is 16083 seconds or 283 minutes.

Electrolysis is the process of converting electrical energy into chemical energy.  If current is passed between two electrodes which are immerse in an electrolyte solution, the metal which is reduced will deposited at the cathode.

The weight of the deposited metal w related with its equivalent weight z, current I and time t is :

w = zIt /96500.

One mole of silver is 108 g. Its equivalent weight also be 108 g Thus the time t is calculated as follows:

108 g = 108 × 6 × t /96500

      t = 96500/6

        = 160835 seconds or 268 minutes.

Hence, the time taken to deposits one mole of silver in this electrolysis is 268 minutes.

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There are two atoms of hydrogen on the reactant side of the equation.

What we try to show on paper are the changes that substances can undergo. A reaction is said to occur when two or more substances are combined together. The combination of the substances would now lead to the rearrangement of bonds and then the formation of a new product.

We know that it is one of the rules of writing a balanced chemical reaction equation that the number of the atoms of each element on the reactant side must be the same as the number of atoms of the same element on the products side.

When we look at the reaction as shown, we can see that the reaction is balanced hence we can be able to find the number of atoms of hydrogen on the reactants side by doing an atom count.

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This is a synthesis reaction we're given that aluminium (Al) can react with oxygen gas (O2 to produce aluminium oxide (Al2O3).The balanced chemical equation for this reaction is 4Al(s)+3O2(g)→2Al2O3(s)

When two separate atoms or molecules interact to create a new compound or molecule, the process is known as a "synthesis reaction." The majority of the time, energy is released and an exothermic reaction takes place during a synthesis reaction. An endothermic result is also conceivable, though. When sodium (Na) and chlorine (Cl) are combined, sodium chloride is created. This is an illustration of a synthesis reaction (NaCl). Al2O3 is the chemical formula for the compound of aluminium and oxygen known as aluminium oxide. It is precisely referred to as aluminum(III) oxide and is the most prevalent of various aluminum oxides. Aluminum oxide is utilized for its strength and hardness.

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The correct answer is 25%. Option A.

Solution:

mass of NaCl (solute) = 50 g

mass of H2O (solvent) = 150 g

Mass of solution = mass of solute + mass of solvent

= (50 + 150) g

= 200 g

Concentration of mass% (m/m) = (mass of solute / mass of solution) x 100 %

= (50/200) x 100 %

= (0.25) x 100 %

= 25.0%

Therefore answer is 25.0% (m/m)

The mass percentage is calculated by dividing the mass of one component by the total mass of the mixture and multiplying by 100%. A mole fraction is a unit of concentration defined as the number of moles of a component divided by the total number of moles in the solution. Solution mass percent is defined as the mass of solute present per 100 grams of solution.

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When a force of 200 N is exerted on an object of mass 40kg, the acceleration is 05 m/s².

We know that, F = ma ... (i)

where F ⇒ Force

m ⇒ mass

a ⇒ acceleration

Given,

F = 200 N = 200 kg ms⁻²

m = 40 kg

By putting the values of F and m from the above question into equation (i), we get:

200 kg ms⁻² = 40 kg × a

a = 200 kg ms⁻² / 40kg

a = 5 ms⁻² or 5 m/s²

Hence, when a force of 200 N is exerted on an object of mass 40kg, the acceleration is 05 m/s².

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The sum of the coefficients involved in the equilibrium reaction equation is 5.

the equilibrium reaction equation is A chemical reaction is said to be balanced when the number of atoms of an element on the reactant side is equal to the number of atoms on the product side. You can check this by doing an atomic count.

When trying to solve this problem, the first step that must be taken is to obtain a balanced reaction equation. Because that's the key to what we're trying to get here. Now you can see the balanced reaction equation for the reaction and then get the total.

[tex]Pb(NO3)_2 + H_2S = > 2 HNO_3 + PbS[/tex]

The sum of the coefficients of the equilibrium reaction equation is 1+1+2+1=5.

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a) the Dutch process at the molecular level Pyrol and benzyl alcohol do not react with NaOH.

b) The molecules are ranked from those that are least likely to be present after the Dutch process to those that are most likely to be present after the Dutch procedure Pyrrol is more likely to be present than butyric acid, which has a lower likelihood of being there.

c) Butyric acid's carboxylic acid is removed using NaOH.

The acidic chemicals with a bitter taste are washed in the Dutch procedure using a strong base like NaOH. Basic substances are not cleansed and only very acidic substances are washed thoroughly. However, vanillin is only somewhat acidic, thiophenol is less acidic, butyric acid is acidic, benzyl alcohol is neutral, and pyrrol is basic.

a) Benzyl alcohol and pyrrol do not react with NaOH. However, butyric acid combines with it to produce sodium butyrate (CH₃CH₂CH₂COONa), vanillin creates its sodium salt ((2-OCH₃,4-CHO)C₆H₃ONa), and thiophenol creates sodium benzenethiolate (C₆H₅SNa).

b) Butyric acid is least likely to be present and pyrrol is most likely to be present. Butyric acid is followed in increasing order of presence by vanillin, thiophenol, benzyl alcohol, and pyrrole.

c). NaOH is used to wash away the carboxylic acid in butyric acid. Due to the aromatic ring, vanillin and thiophenol are acidic and combine with NaOH to generate a sodium salt that is water soluble. Because it is neutral and pyrrole is basic, neither benzyl alcohol nor pyrrole will react with NaOH.

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Silver is most likely the best conductor of heat according to the periodic table.

The most electrically conductive component is silver, taken after by copper and gold. Silver too has the most elevated warm conductivity of any component and the most noteworthy light reflectance.

The components can be classified as metals, nonmetals, or metalloids. The most electrically conductive component is silver, taken after by copper and gold. Silver too has the most elevated warm conductivity of any component and the most noteworthy light reflectance.

As to why silver is the most excellent conductor, the reply is that its electrons are more liberated to move than those of the other components.

This has got to do with its valence and gem structure. Most metals conduct power. Other components with tall electrical conductivity, are aluminum, zinc, nickel, press, and platinum. Brass and bronze are electrically conductive amalgams, instead of components.

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The picture shows the balancing of chemical equations. The balanced chemical equation of the reaction is:

Balanced chemical equations are equations in which the number of moles of atoms of elements that are reacting is equal to the number of moles of atoms of the elements that are produced.

The balancing of chemical reactions follows the law of conservation of mass which states that matter cannot be created nor destroyed but can change from one form to another.

Hence, in a balanced chemical equation, the mass of the reactants is equal to the sum of the mass of the products.

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Bones are classified into Five according to shape namely: Long bones, short bones, flat bones, iregular bones, sesamoid bones.

These are living tissues that contain their own blood vessels and are comprised of different cells, proteins, minerals, and vitamins. They make up the body's skeleton.

Bone classification according to shape:

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The type of protein molecules that is been used to digest food in  the organism are:  

The organelle where energy from nutrients is released is the Mitochondria.

One  inference that can be made concerning a cell that has many of these organelles is that te utilization of the energy is balanced.

The  organelle where energy from nutrients is released is the Mitochondria , this organelles can be described as the one that look tiny  inside cells  and this is very essential in the cell because it helps in the p[roces of releasing energy from food.

It should be noted that this process is been refferd to as process of cellular respiration and this is the reason why the biologist do referred to  mitochondria as the powerhouses of the cell because it involves the use of energy.

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The number of moles of beryllium oxide BeO are 2.228 moles.

The chemical formula for beryllium oxide is given to be BeO.

The mass of the amount of beryllium oxide formed is 555.7 grams.

we are asked to find the number of moles,

The moles are given by the mass of the substance divided by the molar mass of the substance.

Mass = Mass formed/molar mass

Mass of BeO formed = 55.7 grams.

Molar mass of BeO = 25g/mol.

Putting values,

Moles of BeO = 55.7/25

Moles of BeO = 2.228 moles.

So, the number of moles of beryllium oxide formed are 2.228 moles.

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Complete question - the chemical formula for beryllium oxide is BeO. A chemist measured the amount of beryllium oxide produced during an experiment. she finds that 55.7 grams of beryllium oxide is produced. calculate the number of moles of beryllium oxide produced. be sure your answer has the correct number of significant digits.

The pH of an aqueous solution is -0.7459

Let the total volume of the solution where both the mixture of aqueous solution of sodium sulfide and sodium hydrogen sulfite are present be V

no. of moles of H+ coming from Na2S,H20 = 18 * 0.293 * V

no. of moles of H+ coming from NaHS = 0.236 * V

Final concentration of H+ will be

Cf = (18 * 0.293 * V) + (0,23 * V) / V

Cf = 5.57

pH = - log [5.57]

pH = - 0.7459

Negative pH occurs when the molarity of hydrogen ions in a strong acid is greater than 1N (normality)

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In an ecosystem, the effect of the chemical industry  which is a positive one is advancements in medicine.

Ecosystem is defined as a system which consists of all living organisms and the physical components with which the living beings interact. The abiotic and biotic components are linked to each other through nutrient cycles and flow of energy.

Energy enters the system through the process of photosynthesis .Animals play an important role in transfer of energy as they feed on each other.As a result of this transfer of matter and energy takes place through the system .Living organisms also influence the quantity of biomass present.By decomposition of dead plants and animals by microbes nutrients are released back in to the soil.

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The process by which the ions are attracted to water and separate from each other when dissolved in water is called dissociation.

What is dissociation of ions in water?

The ionic salts when added to water dissolve in water by dissociation. The ions in the ionic compound break the bond between them and get dissolved in water. Water molecules reduce the electrostatic force between the ions and solvate them by surrounding them.

The positive ions of the ionic compound gets attracted to hydroxide ion of water which is negatively charged. The positive ion of the ionic compound gets attracted to protons in water which are positively charged. the ions in ionic compound dissolve by dissociation.

Therefore, due to dissociation the ionic compound dissolves in water and get attracted to opposite charges in water.

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Chemicals that change behavior or mood by directly affecting activity of the postsynaptic cell are referred to as neurotransmitter

In a chemical synapse the postsynaptic membrane is the membrane that receives a signal from the presynaptic cell and respond via depolarization or hyperpolarization and neurotransmitter play an important role in neural communication and they are chemical messengers that carry massages between nerve cell and other cell in your body and influencing everything from mood to involuntary movements and monoamine neurotransmitter such as dopamine are the most important neurotransmitter in the pathophysiology of mood disorders

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The SN2 reaction proceeds most quickly for primary carbons and there's less steric congestion for all of this backside assault.

Secondary as well as tertiary alkyl halides undergo the SN2 reaction more slowly than primary alkyl halides. Since there were only three little hydrogen atoms present, methyl halides interact in SN2 reactions the fastest among the simple alkyl halides.

Due to the fact that tertiary carbocations comprise three alkyl groups and secondary carbocations only have two, the former is more stable. Based on the inductive effect, tertiary carbocation is therefore more stable that secondary carbocation.

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The pH of the solution which was made by mixing 40ml of 0.100 M HCL with 25.00ml of 0.100 M KOH is 1.669.

The base and the acid have the same molarity, but the acid's volume is more than the bases' volume, hence after mixing the resultant solution is acidic.

The concentration of OH⁻ solution in the mixture is

= (molarity of base * volume of base - molarity of acid * volume of acid) / total volume

= (40 mL*0.1M - 25 mL *0.1 M ) / (40 mL +25mL)/ 1000)

= 0.021428571 M

pH = -log(0.021428571) = 1.669

Hence the pH is 1.669

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The quantity of glycine present in analyte as measured by titration is 3mmol.

This titration calculation can be done using dimensional analysis. All values should first be converted to scientific notation: 60 mL NaOH is equal to 6 x 10-2 L NaOH. 1 x 10-1 mol NaOH/L NaOH is equal to 0.1 M NaOH. For every mole of glycine present in the analyte, 2 moles of NaOH have been supplied at the second equivalence point. This is due to the fact that one OH- was necessary to scavenge the COOH group, and a second OH- was required to scavenge the amine. To take this into consideration, we must adjust our computation. Finally: (6 x 10-2 L NaOH) x (10-1 mol NaOH / L NaOH) x (1 mol glycine / 2 mol NaOH) = 3 x 10-3 mol = 3.0 mmol glycine.

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7.133 is the rate constant increase if the temperature is raised to 37c.

factor=rate(T2)/rate(T1) .

The proportionality constant (k) that links the pace of the reaction to the concentrations of reactants is known as the specific rate constant. For any chemical reaction, the rate law and the particular rate constant must be ascertained through experimentation. Temperature affects the rate constant's value.a chemical reaction in which two or more substances interact and change into new ones, or where one substance transforms into another.

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As the volume of  the sound is seen to increase, the sound that we hear is louder as the amplitude of the sound increases.

Sound is a kind of wave that moves through a medium. We know that sound has to move via several compressions and rare factions. This implies that sound is as well propagated through air. The movement of the sound waves through air is because the air is set into vibration by the sound. Thus, the air is very imprtant in the movement of the sound waves.

With this much said, we can see that if there is more air, there would more molecules that can be set into vibration and the sound wave would tend to increase and that is the deal that we are trying to communicate here.

Thus, the amplitude of air increases as the volume of  the sound gets higher and the sound that we hear is much louder.

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Cr is the limiting reagent & the amount of Cr2N3 produced depends on the limiting reagent.

2 mol of Cr produces 146g of Cr2N3

1 mol ———————- 146/2g of Cr2N3

4.5 mol ——————- 146 x 4.5/2g of Cr2N3

=328.5g of Cr2N3

What is a Limiting Reagent?

Thus, 328.5 g of cr2n3 can be formed.

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If the relative molecular mass of CH₂O is 60, the molecular formula of the compound would be  [tex]C_3 H_6O_3[/tex].

The empirical formula of a compound is the formula based on the simplest whole number ratio of the component atoms. The molecular formula could be in multiples of the empirical formula.

The empirical and the molecular formulas of a compound are related by the following equation:

[empirical formula]n = molecular formula

Where n = molecular formula mass/empirical formula mass

In this case, the relative molecular mass is 60. The empirical formula mass can be calculated as:

CH₂O = (12) + (2x1) + (16)

          = 40 g/mol

Thus:

n = 60/40

 = 1.5

Therefore, the molecular formula would be: [CH₂O]1.5 which is equivalent to [tex]C_3 H_6O_3[/tex]. This is because atoms combine in simple whole number ratios.

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Answer: Rusting Photosynthesis

Explanation: Hope this helps

A compound is formed by combining a polyatomic cation and a polyatomic anion. The compound can be ammonium sulphate and the  chemical formula for the compound is (NH₄)₂SO₄.

The ammonium ion is a polyatomic cation - NH₄⁺ and the polyatomic anion that is sulfate ion - SO₄²⁻. The polyatomic cation and the polyatomic anion combine and for the polyatomic ionic com pounds. Ionic bond is formed between a positively charge ion and the negatively charge ion.

Thus, A compound is formed by combining a polyatomic cation and a polyatomic anion. The compound can be ammonium sulphate and the  chemical formula for the compound is (NH₄)₂SO₄.

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Answer: True

Explanation: The value of the equilibrium constant indicates whether or not a reaction is favorable. Reactions for which Keq is greater than one are favorable, meaning that the reactants are higher in energy than the products and signifying that energy is released as the reaction proceeds.

Bases that are useful for deprotonating compounds are:

NaHCO₃ or NaOH.

metal alkoxide

Sodium hydroxide

Benzene rings with carboxylic acids that are weak acids can be prepared using NaOH or NaHCO 3 due to the weakness of the carboxylic acid. deprotonated.

Metal alkoxides such as potassium tert-butoxide can be used to deprotonate benzene rings with three carbon chains attached to one carbon. Also, metal alkoxides are used because the benzene ring containing the hydroxyl group is a very weak acid.

A benzene ring with a hydroxyl group is a weak acid like a benzene ring with a carboxyl group, so it can be deprotonated with NaOH.

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The mass of hydrogen that will be produced when 195 mg of potassium is added to water would be 5 mg.

From the balanced equation of the reaction:

[tex]2K + H_2O --- > 2KOH + H_2[/tex]

The mole number of the potassium that reacts to the mole of the hydrogen gas that is produced is 2:1.

If 195 mg of potassium reacts:

1 mg = 0.001 g

195 mg = 195 x 0.001

            = 0.195 g

Recall that: mole = mass/molar mass

Molar mass of potassium = 39 g/mol

mole of 0.195 g potassium = 0.195/39

                                             = 0.005 mol

From the stoichiometric mole ratio, the equivalent mole of hydrogen gas produced would be:

       0.005/2 = 0.0025 mol.

Molar mass of hydrogen gas = 2 g/mol

Mass of 0.0025 hydrogen gas = 0.0025 x 2

                                                   = 0.005 g

0.005 g = 0.005 x 1000

             = 5 mg

This means that 0.005 g or 5 mg of hydrogen gas will be produced when 195 mg of potassium is added to water.

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