2 This question is about atomic structure and bonding. (a) Atoms are made up of protons, neutrons and electrons. Complete the table.​

The  water particles moves closer together towards each other.

The water in the beaker is in a liquid state of matter as given in the statement and the  temperature decreases from 50°C to 10°C when placed in a freezer by Kiley.
This means that heat from water is gradually being lost ,as the liquid water undergoes freezing in a solid state. When the  water in  liquid state is freezed, water molecules, which were moving more freely in liquid state  move closer to each other  because the speed at which the water molecules in the liquid state moved has been reduced in solid state (ice).

The process in where matter is changing from the liquid to the solid state is known as Freezing.  the freezing point of liquid like  water is 32°F or 0°C. 

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Boyles law shows the relation between effect of pressure on volume at constant temperature.

In boyle's law mass is independent variable and volume is dependent variable. The equation of boyle's law is

pV= constant.

Because the gas particles are compressed closer together as the pressure on a gas rises, the volume of the gas decreases.

In contrast, as a gas's pressure falls, its volume rises as a result of the gas's ability to spread its particles farther apart. Because the volume of the gas has risen, weather balloons become larger as they ascend through the sky to lower pressure areas.

Therefore, Boyles law shows the relation between effect of pressure on volume at constant temperature.

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The correct option is (B) increase.

If the number of molecules of gas a is doubled, the rate of reaction will increase.

The measure of the change in reactant or product concentration per unit of time is known as the reaction rate for a specific chemical reaction.

The speed at which a chemical reaction proceeds is known as the reaction rate. The concentration of a reactant that is consumed in a unit of time or the concentration of a product that is produced in a unit of time is two common ways to define it (amount per unit volume).

The rate law and collision theory both state that reaction rate increases with concentration. Collisions happen more frequently as reactant concentration rises. Pressure causes a rise in the rate of gaseous reactions, which is actually comparable to a rise in the gas's concentration.

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The complete question is:

"Consider two gases, A and B, are in a container at room temperature. What effect will the following changes have on the rate of the reaction between these gases? The number of molecules of gas A is doubled.

(A)decrease

(B)increase"

In the outermost shell of aluminum, there are 2 electrons in the s orbital and 1 in the p orbital.

Let us recall that the orbital diagram is the diagram that shows the arrangement of the electrons in an atom. Let us recall that aluminum is an element of group 13 of the periodic table. This implies that there are three electrons in the outermost shell of the atom.

Now, we can see the orbital diagram of aluminum in the image that have been attached to this answer. It is therefore very much clear that there are three electrons in the outermost shell.

In the outermost shell of aluminum, there are 2 electrons in the s orbital and 1 in the p orbital.

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The mass of carbon dioxide in this is 264 g according to the given data.

The molar mass is basically the total mass in grams of the atoms that make up a molecule per mole. Molar mass is measured in grams per mole.

Combustion is the process of burning glucose in the presence of oxygen.

The balanced reaction is

[tex]C_6H_1_2O_6+6O_2---- > 6CO_2+6H_2O[/tex]

As a result, each mole of glucose requires six moles of oxygen molecules.

Glucose has a molar mass of 180g per mole.

As a result, the reaction will be completed, with one mole of glucose reacting with six moles of oxygen to produce six moles of Carbon dioxide and six moles of water.

Carbon dioxide produced mass = moles X molar mass = 6 x 44 = 264 g

Thus, 264g will be the mass of the carbon dioxide produced.

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Answer in the attachment above.....

Answer:

When pressure increases, gas volume decreases.

When pressure decreases, gas volume increases.

A monolayer is containing 3.18×10-6 g of oleic acid has an area of 20.0 cm2, thus the thickness of the monolayer is calculated as    1.777 × 10⁻⁷ cm

Using,

Density = Mass / Volume

It is given that:

Area = 20.0 cm²

Density = 0.895 g/mL

Mass = 3.18 × 10⁻⁶ g

Then, applying the density formula as:

0.895 g/mL = 3.18 × 10⁻⁶ g / Volume (ml)

Volume = 3.55 × 10⁻⁶ mL

Since, 1 mL = cm³

So, Volume = 3.55 × 10⁻⁶ cm³

Thickness of monolayer = ?

Also, Volume = area x thickness

So, then we have

Thickness = Volume/Area = 3.55 × 10⁻⁶ cm³ / 20.0 cm²

= 1.777 × 10⁻⁷ cm

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Figure 1 shows the melting points and the boiling points of four substances, A, B, C and D. The substance is liquid over the greatest temperature range is C.

Hence, Option 3 is correct answer.

The Melting point (MP) of a substance is defined as the temperature at which a solid melts and change from a solid state to a liquid state may coexist in equilibrium. Melting point is a physical property.

Example of melting point: Sodium chloride (NaCl) is an ionic compound. Sodium chloride (NaCl) is made up of strong ionic bonds and it melts at only high temperatures that is 801°C.

Boiling point is defined as the particular temperature where the liquid-gas phase change occurs and the vapor pressure of a liquid equals the external pressure surrounding the liquid.

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Note: The question is incomplete on the portal. Here is the complete question.

Question: Figure 1 shows the melting points and the boiling points of four substances, A, B, C and D. Which substance is liquid over the greatest temperature range ?

1. A

2. B

3. C

4. D

The specific heat of the metallic element rhodium is 0. 240 j/g-k at 25°c. If 586 j of heat is added to an 80. 0 g block of rhodium metal that is initially at 25. 0°c,  the expected final temperature of the block 55.5 °C.

As we know heat is equal to:

Q= mcΔT

Given values:

M= 80 g

C = 0.240 J/g K

Q= 586 J

To find final temperature

ΔT = 586 / 80 x 0.240 = 30.5 °C

Final temperature =25 + 30.5 = 55.5 °C

The final temperature is  55.5 °C.

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The true statement is; the mass of sodium chloride formed is less than 76 grams.

From the law of conservation of mass, we know that the total mass of the reactants and the products must remain the same. This is summarized in the axiom that the mass can not be created nor destroyed in a chemical system.

In this chemical system, we have 40 g of sodium hydroxide and and 36 g of hydrochloric acid. The reaction occurs thus; hydrochloric acid + sodium hydroxide = sodium chloride + water

Applying the law of conservation of mass, we can see that the true statement is; the mass of sodium chloride formed is less than 76 grams.

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Missing parts;

In a chemical reaction, 36 grams of hydrochloric acid reacts with 40 grams of sodium hydroxide to produce sodium chloride and water. Which statement is correct?

The mass of water formed is 76 grams.

The mass of sodium chloride formed is 76 grams.

The mass of water formed is greater than 76 grams.

The mass of sodium chloride formed is less than 76 grams.

After selecting the hypothesis, the next step is to design an experiment to test the hypothesis.

For example, our hypothesis is "deforestation causes soil erosion".

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Answer:

The answer is D all of the above

Explanation:

Most carbon is stored in rocks and sediments, while the rest is stored in the ocean, atmosphere, and living organisms.

Answer:

D

Explanation:

Bro the source is: Trust me Bro

The frequency of the wave is 1.33 * 10^15 Hz.

We know that a wave has both the magnitude and the direction of the wave. In this case, we can see that the electron is said to have the speed of light and we need to find the frequency of the electron.

From the wave formula;

c = λf

c = speed of light

λ = wavelength

f = frequency

c = 3 * 10^8 m/s

λ = 225 * 10^-9 m

f = ???

f = c/ λ

f =  3 * 10^8 m/s/225 * 10^-9 m

f = 1.33 * 10^15 Hz

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A non-volatile solvent should be used that is present without impurities.

The solvent should be non-volatile, non-flammable, and non-carcinogenic. 50 to 120°C should be the boiling point of the solvent. Impurities ought to be soluble in the cold solvent or insoluble in the hot solvent, respectively. The substance and solvent must not interact in any way.

Ether has a higher solubility for trimyristin than acetone. After the solvent was removed, diethyl ether produced an oil that was difficult to crystallize.

Longer fatty acid chains result in more London dispersion forces, which raise the melting point.

Several of the major laboratory solvents, including water, alcohol is commonly used.

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Answer:

C. Net force

Explanation:

115 Kilometers is an equivalent of 11,500,000 centimeters. This problem is related to metric conversion.

It is to be noted that there are 100,000 centimeters in one Kilometer.

Hence,

115 Kilometers = 100,000 x 115

= 11,500,000

Thus, 115 Kilometers =  11,500,000 Centimeters.

The metric system is an international decimal weights and measures system that relies on the meter for length and the kilogram for mass that was introduced in France in 1795 and is now officially used in virtually all countries.

The metric system is a measuring system that employs the meter, liter, and gram as basic units of length (distance), capacity (volume), and weight (mass). We employ units derived from metric units to measure smaller and greater quantities.

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You can modify to wrap aluminum foil around the sample flask and fractionating column.

And place the receiving flask in an ice bath.

Separating a mixture into its constituent parts, or fractions is known as fractional distillation. By heating chemical mixtures to a temperature where one or more fractions of the mixture evaporate, chemical compounds are separated.

Fractional Distillation can also be described as the separation of a liquid combination via distillation, usually using a fractionating column, into fractions with different boiling points (and thus chemical composition).

Chemicals can be cleaned by fractional distillation, and mixtures can be divided into their constituent parts.

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Option B) The reverse rate constant will increase 20-fold, because an enzyme does not alter the equilibrium constant, it must catalyze both forward and reverse reactions to the same extent.

The forward reaction rate constant divided by the reverse rate constant gives the equilibrium constant as per the catalyze that performs the role.

The reciprocal of the equilibrium expression for a reaction written in the forward direction is the expression for a reaction written in the reverse direction. The forward reaction’s constant is K, while the reverse reactions is K’.

Yes, the forward to the backward ratio of the equilibrium constant is what makes it feasible for a reaction to have big forward and reverse rate constants yet a tiny equilibrium constant.

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Complete Question

A reaction has an equilibrium constant, Keq, of 50. When performed in the presence of an appropriate enzyme, the forward rate constant is increased 20-fold. What will happen to the reverse rate constant?

a. In will decrease 20-fold.

b. It will increase 20-fold.

c. It will be unaffected.

Answer: Aspartame

Explanation:

An acid is able to produce ions in the aqueous solution because polar H-A bond break due to the attraction between H atoms and the O atoms of water.

In Chemistry, a substance that produces hydrogen ions along with a conjugate base is called acid.

After dissolving in water, the constituents of acid break apart forming hydrogen ions or H+ ions which react with water molecules to form hydronium ions i.e. H3O+. Thus making the solution more acidic.

The general formula of an acid shows that it contains a halogen atom, an oxygen atom and hydrogen atoms.

For example, the dissociation of H2SO4 in water produces H+ ions and SO4- ions.

H2SO4      ⇄     H+ + SO4-

In the absence of water acids can not dissociate.

To put it simply, acids release h+ ions only when they are added to an aqueous solution.

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The equilibrium to shift as in direction where the drop in concentration of occurs if the concentration of [tex]Co_{2}[/tex]is raised on the product side. As a result, the equilibrium will move to the left.

what is equilibrium?

During a reversible chemical process, chemical equilibrium is the state in which there is no net change in the quantity of reactants or products. The moment the products are produced in a reversible chemical reaction, they begin to interact with the initial reactants.

When the two opposing reactions are in equilibrium, there is no net change in the amount of the chemicals involved since they are taking place at the same rates, or velocities.

However at time, the reaction may be deemed to have finished, meaning that the maximum amount of reactants to products has been converted under the given reaction conditions.

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The correct question is :

Consider the following reversible, exothermic chemical reaction: 2C2H2(g) + 5O2(g) ↔4CO2(g) + 2H2O(g)

All BUT one of the conditions will cause equilibrium to shift right and produce more of the products. Which change will cause the reaction to shift to the left?

A) adding oxygen

B) adding CO2

C) increasing the pressure

D) decreasing the temperature

The statement that best describes a scatterplot is that it shows quantitative data that relate two variables (option C).

A scatter plot is a type of graph that displays the relationship between two variables.

The scatter plot is portrayed on a cartesian plane where one of the variables is on an axis called X-axis and the other is on another axis called y-axis.

One of the variables is the independent variable while the other variable is the dependent variable.

Therefore, the statement that best describes a scatterplot is that it shows quantitative data that relate two variables.

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Waves are related to energy because waves carries energy.

Energy is defined as a quantitative property that is transferred to a body or to a physical system to perform there work.

It can also be defined as a ability to do work or ability to exert a force causing displacement of the objects.

Energy is divided into two parts.

The amount of energy carried is related to there frequency and there amplitude. The wave travels and carry energy with it.

Thus, waves are related to energy because waves carries energy.

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C. Because of inertia, the ball continues rolling forward at the same speed.

Newton's first law states that if a body is at rest or moving at a constant speed in a straight line, it will remain at rest or keep moving in a straight line at constant speed unless it is acted upon by a force.

This law of is also called the law of inertia because it depends on the mass of the object.

If a steel ball is at one end of a box that is moving forward, when the box suddenly stops, the steel ball will continue moving forward based on Newton's law of inertia.

Thus, because of inertia, the ball continues rolling forward at the same speed.

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Any atom can differ in the amount of any of the three particles in each of them.

If the number of protons is different, the atoms are of two different elements. The number of neutrons in atoms of different elements can be the same and the number of neutrons in two atoms of the same element can be different.

The number of protons in the atoms of each element is fixed to its atomic number. The atomic mass can be the same across atoms of different elements but the atomic number is the same. It is therefore accurate to say that atoms of different elements can be identified solely by the number of protons.

The answer would be 398.40 K and 4.71 * 10^-6 kW/K.

Temp. of Argon stream : 80 F = 299.817 K

Temp of CO2 stream : 550 F = 533.15 K

CO2 mass, flow rate : 0.5 lbm/h = 6.299 * 10^-5 kg/s

Ar,mass, flow rate : 1 lbm / h = 0.000125 kg /s

(a) Particular heat capacity of Ar : 0.523 kJ/Kg.K

Particular heat capacity of CO2 : 0.756 kJ/kg.K

Mass balance expression = mo3 = mo1 + m02 ; mo3 is mass mixture.

Formula to find heat capacity of mixed particle : cpm  mo1*cpa + mo2cpc/mo1 + mo2

= 0.6010 kJ/ kg.K

Formula for energy balance law mo3*cpm*T03 = mo1*cpa*To1 + mo2*cpc*To2

Put the values , and the temperature of the mixture is 398.40 K

(b) Formula for rate of entropy geneartion for process is

del So= mo1*cpa ln(T03 / T01) + mo2*cpc in (T03 / T02)

Put the values and we get del So = 4.71 * 10^-6 kW/K

The given question is incomplete : (a) Final Temperature ?

(b) Rate of entropy generation of the process ?

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