As astudent of chemistry write an article advising the local community committee incharge on the purchase of the apparatus equipment and furniture

A maximum of two electrons will be placed in 1s first. With a maximum of two electrons, 2s will then be filled. With a maximum of 6 electrons, 2p will then be filled.

To learn more about orbital refer to:

https://brainly.com/question/20319149

#SPJ1

Answer:

The first picture shows how the two H athoms finds each other. The second one, how these H athoms start's to form a covalent bond describing it by Lewi's estructure. And the last one, shows how the two athoms of H formed an H2 molecula.

Explanation:

Answer:

196.96655

Explanation:

The answer is 196.96655. I assume you are converting between grams Gold and mole. The molecular formula for Gold is Au. The SI base unit for the amount of substance is the mole.

The quantity present in an atom or molecules of a given substance is called moles it is written as mol and is calculated with the help of molar mass and mass of the given substance.

0.507699 mol is present in the 100 gm of gold.

Given,

The formula for calculating moles is:

\(\rm Moles (n) = \dfrac{Mass}{Molar \;mass}\)

Substituting values in the formula:

\(\begin{aligned}\rm n & = \dfrac{100}{196.967}\\\\ & = 0.507699 \;\rm mol\\\\& = 0.5077\;\rm mol\end{aligned}\)

Therefore, 0.5077 mol is present in 100 gm of gold.

Learn more about moles here:

https://brainly.com/question/6260819

The units of measurement that can be used for precipitation with mm or inches is precipitation, and air temperature.

The Temperature is known to be how hot or cold the air or atmosphere is. It is often measured by the used of a thermometer (in Celsius (C) or Fahrenheit (F), or Kelvin (K) ).

The unit of measurement for precipitation is said to be in millimeters. The unit is known to be in linear depth, that is in millimeters (for volume/area), or in kg m–2 (for the mass/ area).

See full question below

A is air pressure and is a temperature

O A is humidity and precipitation

O A is precipitation, and B is air temperature

O A is wind speed, and B is humidity

Learn more about precipitation from

https://brainly.com/question/866725

Answer:

B

Explanation:

Chemical and physical element properties are determined by their valence electrons metals with only one valence electron are poor conductors of electricity. Option B is correct.

Valence electrons are the electrons present at the valance shell or orbit of the atom and always take part in the chemical reaction or reaction with other metals and can conduct electricity.

If the atom contains only one valance electron in the outermost shell or valance shell then it cannot conduct the electricity properly due to the fewer number of electrons.

Therefore, Option B is correct. Chemical and physical element properties are determined by their valence electrons metals with only one valence electron are poor conductors of electricity.

Learn more about valance electrons, here:

https://brainly.com/question/866518

#SPJ2

Answer:

\(\boxed {\boxed {\sf molarity = 0.17 \ M \ C_6H_12O_6}}\)

Explanation:

Molarity is found by dividing the moles of solute by liters of solution.

\(molarity = \frac {moles}{liters}\)

We are given grams of a compound and milliliters of solution, so we must make 2 conversions.

1. Gram to Moles

We must use the molar mass. First, use the Periodic Table to find the molar masses of the individual elements.

Next, look at the formula and note the subscripts. This tells us the number of atoms in 1 molecule. We multiply the molar mass of each element by its subscript.

6(12.011)+12(1.008)+6(15.999)=180.156 g/mol

Use this number as a ratio.

\(\frac {180.156 \ g\ C_6H_12 O_6}{ 1 \ mol \ C_6H_12O_6}\)

Multiply by the given number of grams.

\(78 \ g \ C_6H_12O_6 *\frac {180.156 \ g\ C_6H_12 O_6}{ 1 \ mol \ C_6H_12O_6}\)

Flip the fraction and divide.

\(78 \ g \ C_6H_12O_6 *\frac { 1 \ mol \ C_6H_12O_6}{180.156 \ g\ C_6H_12 O_6}\)

\(\frac { 78 \ mol \ C_6H_12O_6}{180.156 }= 0.432958102977 \ mol \ C_6H_12O_6\)

2. Milliliters to Liters

There are 1000 milliliters in 1 liter.

\(\frac {1 \ L }{ 1000 \ mL}\)

Multiply by 2500 mL.

\(2500 \ mL* \frac {1 \ L }{ 1000 \ mL}\)

\(2500 * \frac {1 \ L }{ 1000 }= 2.5 \ L\)

3. Calculate Molarity

Finally, divide the moles by the liters.

\(molarity = \frac {0.432958102977 \ mol \ C_6H_12O_6}{ 2.5 \ L}\)

\(molarity = 0.173183241191 \ mol \ C_6H_12O_6/L\)

The original measurement has 2 significant figures, so our answer must have the same. That is the hundredth place and the 3 tells us to leave the 7.

\(molarity \approx 0.17 \ mol \ C_6H_12O_6 /L\)

1 mole per liter is also equal to 1 M.

\(molarity = 0.17 \ M \ C_6H_12O_6\)

Deprotonation of phenol by NaOHPhenol is a weak acid with a pKa value of 10, so it is not very acidic but it can be deprotonated with a strong base like sodium hydroxide (NaOH). The mechanism for this reaction is a simple acid-base reaction where NaOH acts as a base and removes the proton (H+) from phenol.

The curved arrow mechanism is shown below:Here, the Na+ ion comes in and removes the H+ ion from the O-H bond in phenol and forms water as a by-product. The major organic product is phenoxide ion (C6H5O−) which is formed after the deprotonation reaction.SN2 reaction of phenoxide with chloroethane Phenoxide ion is a good nucleophile because it has a negative charge on the oxygen atom which is able to attack the positively charged carbon atom in chloroethane. The mechanism for this reaction is a nucleophilic substitution (SN2) reaction where the phenoxide ion acts as a nucleophile and replaces the chloride ion in chloroethane. The curved arrow mechanism is shown below:Here, the phenoxide ion attacks the carbon atom in chloroethane, and the chloride ion leaves as a leaving group. The major organic product is ethyl phenyl ether (C6H5OC2H5) which is formed after the SN2 reaction.

For more information on Deprotonation visit:

brainly.com/question/30706409

#SPJ11

A. Ammonia is the limiting reactant.

B. Theoretical yield of urea is 215.3 kg.

C. Percent yield for the reaction is 86.0%

D. The mass of the excess carbon dioxide left is approximately 54.1 kg.

a) To identify the limiting reactant, we should compare the amount of products formed from each reactant. The chemical equation for the formation of urea \((NH_2CONH_2)\) by combining ammonia \((NH_3)\) and carbon dioxide \((CO_2)\) is as follows:

\(2 NH_3 + CO_2 - > NH_2CONH_2 + H_2O\)

The stoichiometry of the balanced equation indicates that the ratio of ammonia to urea is 2:1.

We can find the number of moles for each reactant using the following masses:

Moles of ammonia = 122.0 kg / 17.03 g/mol = 7.17 mol

Moles of carbon dioxide = 211.4 kg / 44.01 g/mol = 4.80 mol

It takes 14.34 moles of ammonia to react completely with the available carbon dioxide because the ratio of ammonia to urea is 2:1. But the amount of ammonia we have is less than we need - only 7.17 mol. As a result, ammonia is the limiting reactant.

b. Based on the limiting reactant, it is possible to calculate the theoretical yield of urea. We can use the moles of ammonia, which is the limiting reactant, to calculate the moles of urea:

Moles of urea = 7.17 mol / 2 = 3.58 mol

We can determine the theoretical yield of urea using the molar mass of urea (60.06 g/mol) as a starting point:

Theoretical yield of urea = 3.58 mol * 60.06 g/mol = 215.3 kg

C. The actual yield (185.1 kg) is calculated by dividing it by the theoretical yield (215.3 kg), then multiplying the result by 100%.

Percent yield = (185.1 kg / 215.3 kg) * 100% = 86.0%

D. We can calculate the amount of non-limiting reactant that has not reacted yet to determine the excess reactant. Since ammonia is the limiting reactant, we must determine how much excess carbon dioxide there is:

Moles of excess carbon dioxide = Moles of carbon dioxide initially - Moles of carbon dioxide used

= 4.80 mol - (7.17 mol / 2) = 1.23 mol

We can determine the mass of excess carbon dioxide using the molar mass of carbon dioxide (44.01 g/mol):

Excess carbon dioxide = 1.23 mol * 44.01 g/mol = 54.1 kg

Therefore, the mass of the excess carbon dioxide left is approximately 54.1 kg.

Learn more about Limiting reactant, here:

https://brainly.com/question/10090573

#SPJ4

The mass of H₂O in the oceans is much larger than the mass of H₂O originally contained in the mantle by a factor of approximately 3860

The mass of H2O in the oceans can be calculated using the following formula:mass of H2O in the oceans = volume of seawater × density of seawater × percentage of H2O in seawater where the volume of seawater is the total volume of the oceans on Earth, which is approximately 1.332 billion km³.

The density of seawater is 1.025 gm/cm³, and seawater is 96.5 percent H₂O. Therefore, the mass of H2O in the oceans is:m = 1.332 × 10⁹ km³ × (1.025 gm/cm³) × (0.965)= 1.307 × 10²¹ gmTo compare the mass of H₂O in the oceans to the mass of H₂O originally contained in the mantle, we need to first find the mass of H₂O originally contained in the mantle. The total mass of the mantle is approximately 4.5 × 10²⁴ gm, and it is estimated that the mantle contains between 50 and 100 ppm of H₂O.

Taking an average value of 75 ppm and using the mass of the mantle, we can calculate the mass of H₂O originally contained in the mantle as follows: mass of H₂O in mantle = (75 ppm) × (4.5 × 10²⁴ gm)= 3.38 × 10¹⁹ gm Therefore, the mass of H₂O in the oceans is much larger than the mass of H₂O originally contained in the mantle by a factor of approximately 3860. It is unlikely that the H₂O of the oceans came from the outgassing of the mantle alone, as the amount of H₂O in the oceans is much greater than the amount of H₂O originally contained in the mantle. Other sources of water, such as comets and asteroids, are thought to have contributed to the water content of the oceans.

To learn more about mantle visit;

https://brainly.com/question/31542515

#SPJ11

The ground-state electron configuration of sulfide ion S²⁻ is 1s² 2s² 2p⁶ 3s² 3p⁶.

Sulfide ion S²⁻ consists of 16 electrons. A ground-state electron configuration refers to the lowest energy level configuration, and it can be determined by arranging electrons into various orbitals in the increasing order of their principal quantum numbers. For finding the electron configuration of an atom or ion, we use the following rules:

1. Aufbau principle- The Aufbau principle states that electrons will first occupy the lowest energy level orbitals before occupying the higher ones.

2. Pauli Exclusion principle- Pauli exclusion principle states that no two electrons can have the same set of four quantum numbers.

3. Hund’s rule- Hund’s rule states that for orbitals with the same energy, each orbital is filled with an electron before any orbital is doubly occupied.

For finding the electron configuration of the S²⁻ ion, we first need to identify the number of electrons that it contains. Sulfur (S) has an atomic number of 16. It has a total of 16 electrons in its neutral state. However, the S²⁻ ion has an additional two electrons, which means it has a total of 16+2 = 18 electrons. Now we can fill these electrons into various orbitals in the increasing order of their principal quantum numbers. The electron configuration is given below:1s² 2s² 2p⁶ 3s² 3p⁶

Learn more about ground-state configuration: https://brainly.com/question/30546051

#SPJ11

A lizard basking in the morning sun is an example of behavior known as thermoregulation. Thermoregulation is a behavior that allows animals to control their body temperature by adjusting to the surrounding environment.

A lizard basking in the morning sun is an example of this behavior, as it is a common way for reptiles to regulate their temperature. By absorbing heat from the sun, the lizard can increase its body temperature to an optimal level that is necessary for its metabolic processes to function properly. This helps the lizard maintain its energy levels and overall health, and is crucial for survival in a changing and unpredictable environment. Thermoregulation is an important adaptation that has evolved in many species to help them cope with variations in temperature, and is essential for their survival.

Learn more about Thermoregulation here: brainly.com/question/15276860

#SPJ4

The index is the number of atoms of the element in that molecule. The coefficient tells you how many of that numerator there are.

The index is part of the formula and should not be changed once the reactant and product formulas have been determined. The coefficients indicate the number of each substance involved in the reaction and can be changed to balance the equation.

Coefficients are used to balance the equations. They are the numbers before the compounds or elements.

A subscript follows the element symbol and indicates the number of that element. The "2" in H2O means there are two H atoms. If there is no subscript after the element symbol, it is assumed to be "1".

For more information on subscript and coefficient kindly visit to

https://brainly.com/question/14425756

#SPJ4

Answer:In the first law, an object will not change its motion unless a force acts on it. In the second law, the force on an object is equal to its mass times its acceleration. In the third law, when two objects interact, they apply forces to each other of equal magnitude and opposite direction

Explanation:

Answer:

EEEEEeeEEeEEEEEEEeEEEEEEEEEE

Explanation:

e

Answer:

Potential Energy

Explanation:

If an object is suspended on a high level, it has high gravitational potential energy because it may fall at any moment

The viscosity of the following molecules decreases with temperature in the following order: a<c<b or

HOCH2CH(OH)CH2OH > HOCH2CH2OH >CH3CH2CH2OH

A fluid's (liquid or gas) viscosity is its resistance to shape change or movement of adjacent parts with respect to one another. Viscosity indicates resistance to flow. The viscosity of molasses, for instance, is higher than that of water.

Because both the surface tension and the viscosity are low at higher temperatures, as the surface tension rises, so does the viscosity. The pascal second (Pa s) or kg/m1/s1 is the SI unit of viscosity.

Click here for additional information on order of compounds

https://brainly.com/question/14310022

#SPJ4

The complete question is

Select the single best answer. Rank the following compounds in order of decreasing viscosity at a given temperature:

(a) CH3CH2CH2OH

(b) HOCH2CH(OH)CH2OH

(c) HOCH2CH2OH

b < a < c

c < b < a

a < c < b

a < b < c

b < c < a

c < a < b

Answer:

hope you like

Explanation:

the solubility rate of a solid is directly proportional to the temperature. if the temperature is high the solubility will also increase

Answer: Wheat flour, edible oil, egg white, lettuce preservative, meat or poultry marinade, vegetable antibacterial wash.

Explanation:

hydrogen peroxide is used as a bleaching agent in some food

I hope this helped

It's sunny in new york, but it is cool, we will expect to find lizard under a rock or in a hole in the ground, where temperature is more than outside.

Lizards are not easily survive in the winter season as they are cold blooded animal, so their body will not active in the winter season.

During the winter season or in the cold weather, lizards will go to the places where they feel less cooling. And these places be like inside the rocks, under a hole, under the ground, in the trunks of trees, etc. due to high temperature.

Hence, options (1) and (4) are correct.

To know more about lizards, visit the below link:

brainly.com/question/407800

Since both the enthalpy and the entropy are positive magnetite will be reduced by carbon at any temperature. Option A

We know that we can only know the temperature at which the reduction of the iron III oxide with carbon would take place by the use of the enthalpy and the entropy of formation of the substance.

The enthalpy of the reaction is;

Enthalpy of products - Enthalpy of reactants

= [2(-393.5) + 3(0)] - [(-1118.4) + 2(0])

= (-784) + 1118.4

= 334.4 kJ

The entropy of the reaction is;

[2(213.7) + 3(247.6)] - [146.4 + 2(5.7)]

(427.4 + 742.8) - (146.4 + 11.4)

=1170.2 - 157.8

= 1012.4 kJ

Learn more about enthalpy:https://brainly.com/question/3393755

#SPJ1

Answer:

The actual reason that the application of salt causes ice to melt is that a solution of water and dissolved salt has a lower freezing point than pure water. When added to ice, salt first dissolves in the film of liquid water that is always present on the surface, thereby lowering its freezing point below the ices temperature. Ice in contact with salty water therefore melts, creating more liquid water, which dissolves more salt, thereby causing more ice to melt, and so on.

A battery is a device that converts chemical energy into electrical energy through a process known as an electrochemical reaction.

When a battery is connected to a circuit, the electrochemical reaction causes a flow of electrons from the anode to the cathode, generating an electric current that can power a device.

The metal chosen for the anode must be capable of losing electrons easily, while the metal chosen for the cathode must be capable of accepting electrons. The choice of metals can also affect the voltage and capacity of the battery, as well as its overall efficiency.

In general, the metals used in a battery should have a large difference in their electronegativity values, which determines how easily an atom can attract electrons. Common metals used in batteries include zinc, lithium, nickel, and cadmium.

Find out more on batteries at https://brainly.com/question/16553902

#SPJ1

In an ecosystem, based on the data in the graph the current carbon

dioxide levels are  far higher than the highest natural levels..

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.

Learn more about ecosystem,here:

https://brainly.com/question/31459119

#SPJ1

The equation that corresponds to the formation of liquid water is:

H₂ (g)  +  1/2 O₂ (g)  \(\longrightarrow\) H₂O (l)

Standard enthalpy of formation can be defined as the enthalpy change when 1 mole of a compound is produced from its elements in their most stable state of aggregation at a temperature of 298.15 K and pressure of 1 atm.

Enthalpy of formation is the standard enthalpy of reaction where two or more reactants combine together to form one mole of the product. The standard enthalpy of formation is measured in units in kilojoule per mole (kJ/mol), joule per mole, or kilocalorie per gram.

All elements in their standard states such as oxygen gas, solid carbon (graphite) have a standard enthalpy of formation of zero.

The water formation reaction has a negative value of the standard enthalpy of formation indicating that the formation of water is an exothermic reaction. One mole of water is formed from the reaction of one mole of hydrogen gas and a half mole of oxygen gas.

Learn more about standard enthalpy of formation, here:

https://brainly.com/question/22056191

#SPJ1

Answer:

2Na + 2H2O → 2NaOH + H2

Explanation:

A balanced equation is an equation for a chemical reaction in which the number of atoms for each element in the reaction and the total charge are the same for both the reactants and the products.

Saturn does not have a true surface and lacks features like volcanoes, extreme temperature and pressure, and craters.

Saturn is a gas giant and does not possess a solid surface like terrestrial planets such as Earth or Mars. Instead, it is composed mostly of hydrogen and helium gases. Due to its gaseous nature, Saturn does not have volcanoes or craters typically found on rocky bodies.

Additionally, extreme temperature and pressure are present in the planet's deep interior, but they are not considered surface features.

Instead, Saturn's atmosphere exhibits fascinating phenomena such as its iconic ring system, storms, and swirling cloud patterns. These distinct characteristics make Saturn a unique and mesmerizing planet in our solar system.

For more questions like Saturn click the link below:

https://brainly.com/question/12181523

#SPJ11

Answer:

Venus fly traps are green plants, as such they make their own carbon-based food by photosynthesizing. Like all green plants, Venus flytraps use their leaves to harness energy from the sun and make their own food; they use carbon dioxide (CO2) to make energy-rich carbohydrates. So they are Producers.

Although the Venus flytrap uses its prey to obtain certain molecules that it needs,  it is still classified as a producer because  it synthesizes glucose by using carbon dioxide and water.

Venus flytrap is a carnivore plant that consume small insects to get nutrition. It is a green plant that produce food by the process of photosynthesis that occurred in its leaves.

Thus, the correct option is D) synthesizes glucose by using carbon dioxide and water.

Learn more about Venus flytrap

https://brainly.com/question/16153955

#SPJ2