dtermine the molar concentration of ethanol in. wine that is 14thanol by mass. the density of this wine is 0.93 g/vm3

The main cause is that more light energy from the sun is transferred to the ground of Eastbrook where ostley is, and the energy then move to the air that is above Eastbrook.

Ambient temperature is the air temperature of any object or environment where equipment is stored.

The ambient means relating to the immediate surroundings.

Also sometimes referred to as the ordinary temperature or the baseline temperature, this value is important for system design and thermal analysis.

Difference in air Temperature is caused by combination of water, air and land working side by side.

The water, air and land cause heating and cooling of different areas at different rates.

Even there are differences in temperature in different places base on seasons or time of the year. As you move higher in a place or a mountainous area tend to have high temperature than the ocean.

Therefore The air temperature of ostley is higher than the air temperature of eastbrook.

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Answer:

A. 0.0233

Explanation:

according to the equation,

no. of moles of KBrO3 : no. of moles of Br2 = 1 : 3

no. of moles of KBrO3

= ⅓ × 0.0700mol

= 0.0233 (3 sig. fig.)

The moles of KBrO₃ are required to prepare 0.0700 moles of Br₂ according to the given reaction is 0.023 moles.

Stoichiometry of the reaction gives idea about the amount of entities present before and after the completion of chemical reaction.

Given balanced chemical reaction is:
KBrO₃ + 5KBr + 6HNO₃ → ️6KNO₃ + 3Br₂ + 3H₂O

From the stoichiometry of the reaction, it is clear that:
3 moles of Br₂ = produced from 1 mole of KBrO₃

0.07 moles of Br₂ = produced from 1/3×0.07=0.023 moles of KBrO₃

Hence required moles of KBrO₃ is 0.023 moles.

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Answer:

How did John D Rockefeller make his fortune? Rockefeller founded the Standard Oil Company in 1870. He ran it until 1897, and remained its largest shareholder.

Answer:

oil

Explanation:

Answer:

Refraction of waves involves a change in the direction of waves as they pass from one medium to another.

Explanation:

Refraction, or the bending of the path of the waves, is accompanied by a change in speed and wavelength of the waves.

Answer:

b

Explanation:

Silicon has the chemical properties that are most similar to those of carbon

The mass of oxygen is 76.32 g

Stoichiometry is the study of the quantitative relationships between reactants and products in a chemical reaction. It refers to the mole ratios of the reactants and products involved in a reaction.

We know that;

Number of moles of  maleic acid anhydride = 52.1 grams /98 g/mol

= 0.53 moles

If 9 moles of oxygen produces 2 moles of  maleic acid anhydride

x moles of oxygen will produce 0.53 moles  of  maleic acid anhydride

x = 2.385 moles

Mass of oxygen =  2.385 moles * 32 g/mol

= 76.32 g

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Given data:H2O vapor content: 13 gramsH2O vapor capacity: 52 grams at 25 degrees Celsius 13 grams at 10∘C52 grams at 30∘CFormula used to find the dew point:$$\dfrac{13}{52}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$\frac{1}{4}=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$

Where A is the constantDew Point:It is the temperature at which air becomes saturated with water vapor when the temperature drops to a point where dew, frost or ice forms. To solve this question, substitute the given data into the formula.$$13/52=\dfrac{(A*3\pi)/(ln100)}{(17.27-A)}$$$$13(17.27-A)=3\pi A(ln100)$$By simplifying the above expression, we get$$A^2-17.27A+64.78=0$$Using the quadratic formula, we get$$A=9.9,7.4$$

The dew point is 7.4 since it is less than 10°C.More than 100:The term "More than 100" has not been used in the question provided.

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The chemical that binds free hydrogen ions (H+) in a solution is called a base.

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The answer is c. 8 electrons are in bromine's next to outer shell (n = 3). Therefore, the answer is c. 8 electrons are in bromine's next to outer shell (n = 3).

Bromine has an atomic number of 35, which means it has 35 protons in its nucleus and 35 electrons in its electron cloud. To determine the number of electrons in bromine's next to outer shell (n = 3), we need to look at the electron configuration of bromine. The electron configuration of bromine is: 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p5

The electrons in the outermost shell (n = 4) are the valence electrons, which are involved in chemical reactions. However, we are interested in the electrons in the next to outer shell (n = 3), which are also important in determining chemical properties. To determine the number of electrons in the next to outer shell, we need to subtract the number of electrons in the outermost shell (n = 4) from the total number of electrons in the atom.

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Answer:

Tuberculosis is a potentially serious infectious bacterial disease that mainly affects the lungs. And how you can get Tuberculosis is that  it can be spread through the air from one person to another, when the person with tuberculosis coughs, sneezes or anything like that and you inhale that air you could have those germs which can cause you to get tuberculosis.

Explanation:

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Answer:

\(P_T = 1627\text{ mm Hg}\)

Explanation:

Dalton's law of partial pressures states that the total pressure in a mixture of gases is the sum of the partial pressures of the individual gases.

In other word:
\(\displaystyle P_T = P_A + P_B + P_C\)

Therefore, the total pressure of the mixture of three gases is:
\(\displaystyle \begin{aligned} P_T & = (445 \text{ mm Hg}) + (560\text{ mm Hg}) + (622\text{ mm Hg}) \\ \\ & = 1627 \text{ mm Hg}\end{aligned}\)

In conclusion, the total pressure of the mixture is 1627 mm Hg.

The statement "Classification of an acid or a base is useful when predicting how a chemical will react with another chemical" is true.\

Knowing whether a chemical is an acid or a base can help predict how it will react with other chemicals. Acids tend to donate protons (H+) while bases tend to accept protons, and these tendencies influence their reactions.

For example, acids react with bases to form salts and water, while bases react with acids to form salts and water as well. Additionally, acids can react with metals to form metal salts and hydrogen gas, while bases can react with certain organic compounds to form salts and water.

By understanding the properties and behavior of acids and bases, chemists can predict and control chemical reactions, which is important for many fields such as drug development, materials science, and environmental science.

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Answer:

acid +base gives salt and water

acid and carbon gives salt and water and carbon dioxide

acid and metal gives salt and hydrogen

As the size of the ions is smaller, there will be a stronger attraction between the two opposite ions.

When the charge on the two opposing ions is bigger, there will be a stronger attraction between them.

Because YF₃ has a higher Y+3 charge, it will be more attractive. Yet, due to the decreased charge in Rb+1, RbF will have weaker attraction.

The ionic compounds in increasing order is RbF < SrF₂ < YF₃

Positively charged ions, known as cations, and negatively charged ions, known as anions, make up ionic compounds, which are neutral substances. The name of the cation is written first, followed by the name of the anion, for binary ionic compounds (ionic compounds that only contain two types of elements).

Typically, they are crystalline solids. Both their melting and boiling points are very high. Typically, they are insoluble in organic solvents but soluble in water. When melted or dissolved in water, they conduct electricity.

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Answer:

an agent that helps accept electrons on others like oxygen, halogens

Explanation:

a substance that tends to bring about oxidation by being reduced and gaining electrons.

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Houston is located on the inside of the North American Emissions Trading Scheme, as stated in the statement.

The word "emission" has its roots in Latin. Its original meaning is "something sent out." Things that can be sent include: The most typical use discusses the release of harmful gases. These gases are created by manufacturers and motors, such as those found in automobiles.

Burning fuel to generate electricity or heat, chemical reactions, and leaks from machinery or other industrial operations all result in direct emissions. Fossil fuel usage is the main source of direct emissions.

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Answer:

The difference between an atom and an ion has to do with net electrical charge. An ion is a particle or collection of particles with a net positive or negative charge. ... A stable atom contains the same number of electrons as protons and no net charge. When electrons are added or removed, the stable atom becomes an ion.Apr 12, 2015

Explanation:

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The aspect of the experiment that is missing from the experimental design for the determination of the boiling points of water and ethanol is deciding on the appropriate equipment.

The correct option is C.

Experiments are scientific procedures that are designed to test a hypothesis in order to prove or disprove the hypothesis.

Also, experiments are done to make discoveries as well as to repeat or confirm a fact.

In designing an experiment, the following components of the experimental design are necessary:

For example, in an experiment to determine the boiling points of water and ethanol, appropriate equipment such as a thermometer is needed.

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Complete question:

A student decides to conduct an investigation to determine the boiling points of water and ethanol. The student will heat samples of water and ethanol, and measure the temperature at which the samples boil. The student will conduct the investigation three times. Which aspect is missing from the experimental design?

determining the procedure

determining what data to collect

deciding on the appropriate equipment

deciding on the number of trials to perform

Electrical Bonding Evidence Quick Check

1. melting point, boiling point, surface tension, and vapor essence

2. deciding on appropriate equipment

3. mix ice with water until equilibrium is reached but some ice remains that is no longer melting

4. it ensures that results are accurate

5. the student should take the average of the results from all four trials

hope i helped ya muah xx

Answer:

i think D

Explanation:

The given chemical equation can be balanced as: CH4 + 2O2 → CO2 + 2H2OTherefore, the balanced chemical equation for the reaction between 46 g of CH4 and 32 g of O2 is:CH4 + 2O2 → CO2 + 2H2OMoles of CH4 = (46 g)/(16.04 g/mol) = 2.87 molMoles of O2 = (32 g)/(32 g/mol) = 1 mol.

Moles of CH4 = (46 g)/(16.04 g/mol) = 2.87 molMoles of O2 = (32 g)/(32 g/mol) = 1 molFor the given reaction, one mole of CH4 reacts with 2 moles of O2. Therefore, 2.87 moles of CH4 would react with 2 × 2.87 = 5.74 moles of O2. As we can see from the given values, only 1 mole of O2 is present. Hence, O2 is the limiting reactant.The balanced chemical equation for the reaction between 46 g of CH4 and 32 g of O2 is:CH4 + 2O2 → CO2 + 2H2OOn

The basis of the balanced chemical equation, 2 moles of O2 is required for one mole of CH4. Here, the moles of O2 is lesser than 2 times the moles of CH4, which means O2 is the limiting reactant and CH4 is the excess reactant. Hence, 32 g of O2 will react completely with 1 mole of CH4, and 14.14 g of CO2 and 4 g of H2O will be produced as per the stoichiometry.

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Answer:

c

Explanation:

its not a plant based gas

When H₂S gas is removed from the system at equilibrium, the reaction shifts to the right (products) and the concentration of NH₃ increases (option C)

A French scientist (Chatelier) postulated a principle which helps us to understand a chemical system in equilibrium.

The principle states that If a an external constraint such as change in temperature, pressure or concentration is imposed on a system in equilibrium, the equilibrium will shift so as to neutralize the effect.

According to Chatelier's principle a decrease in concentration of the products will favor the forward (right) reaction.

From the above principle, we can conclude that when H₂S gas is removed from the system at equilibrium, the reaction shifts to the right (products) and the concentration of NH₃ increases.

Thus, the correct answer to the question is option C

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The volume of carbon dioxide at STP will be 54.31 L. The chemical reaction:Na2CO3 (aq) + 2 HF (aq) → H2O (ℓ) + CO2 (g) + 2 NaF (aq)

Molar mass of Na2CO3= 2 x 23 + 12 + 3 x 16= 106 g/molMolar mass of HF= 1 + 19= 20 g/molNumber of moles of HF= 2.43 molUsing stoichiometry of the reaction:1 mole of HF produces 1 mole of CO2Number of moles of CO2 produced= 2.43 mol. Therefore, the volume of carbon dioxide at STP will be 54.31 L.STP (Standard Temperature and Pressure) is defined as a temperature of 0°C and a pressure of 1 atm.

This is also equivalent to 273.15 K and 101.3 kPa pressure, respectively. Hence, the long answer to the question is:Volume of CO2 = n x VmWhere, Vm = 22.4 L/mol (at STP)Now, we have to find the number of moles of CO2 produced. According to the balanced chemical equation:Na2CO3 (aq) + 2 HF (aq) → H2O (ℓ) + CO2 (g) + 2 NaF (aq)1 mol of Na2CO3 reacts with 2 mol of HF

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• The balanced equation for the reaction is given by:

• From the above reaction we can see that:

1 mole of ethanol (CH3Ch2OH) produces 1 mol of acetic acid(CH3COOH)

so . x mole of ethanol will produce 0.9mol of acetic acid ....(cross multiply)

xmol ethanol * 1mol acetic = 1mol ethamol* 0.9molacetic

∴ xmol ethanol = 1*0.9 /1

= 0.90 mol

• This means that, 0.90 mol of ethanol, is needed to produce 0.9mol acetic acid,.

Answer:immiscible

Explanation:

When two liquids combine to form a new liquid, we call the liquids “miscible.” When two liquids do not mix together and instead form layers, we call them “immiscible.” The chemical properties of the liquids will determine if they will mix or not.

Option A.  The Law of Universal Gravitation,  states that every particle attracts every other particle in the universe with a force that is directly proportional to the product of their masses and inversely proportional to the square of the distance between their centers.

Newton's law of gravitation, states that any particle of matter in the universe draws another with pressure varying at once as the manufactured from the loads and inversely as the rectangular.

Newton, the pressure of gravity appearing between the earth and another item is at once proportional to the mass of the earth, directly proportional to the mass of the item, and inversely proportional to the square of the distance that separates the centers of the earth and the item. Gravitational steady, G is unbiased of the nature of the particle, medium among the debris, and time. Its cost is constant anywhere within the Universe.

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Adding chloride to compounds as a nucleophile. In aryl compounds, chlorides can be attacked in the ortho, para, or meta positions depending on the electron donating/withdrawing (ring substituents).

The starting material used is xylene (dimethylbenzene); This benzene ring has a methyl substituent and behaves as an electron-donating group, activating the ring to form an ortho-para substituted proton.

Thus, in the chlorination of o-xylene, one of these positions is vacant and the para position is free, thus forming two products named as ortho-chloro-o-xylene and p-chloro-xylene.

But when p-xylene is chlorinated, only another position is free because the para-position is already occupied by the methyl substituent; only one product is formed at the ortho position.

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Answer:

A). half, higher

Explanation:

The Formal charge is elaborated as the 'allocated charge to a molecules' atom' on the basis of the assumption that the electrons present in the chemical bond are equally split among the atoms. It is estimated by 'halving the no. of bonding electrons that encircle the atom.

While Oxidation number is characterized as the 'hypothetical charge of an atom that is present within a molecule.' It is also defined as 'the actual number of lost or gained electrons or the rate at which the electrons are gained or lost by an atom to develop a chemical bond along with the other atom.' It is calculated by allocating or sharing the electrons having the higher electronegativity belonging to a specific bond with the other. Thus, option A is the correct answer.