mol.
4. You have 120g of a solution that contains 38g of hydrochloric acid (HCI), what
percentage of your solution is made up of hydrochloric acid? (%M/M)
al volume

There is huge difference in ionisation energy between IE4 and IE5. This means, lots of energy are required to remove 5th electron. So, after 4 electrons are removed, the element has acquired noble gas configuration,. So, ether are 4 valence electrons in the element.

The element in period 2 with 4 valence electrons is Carbon

Answer: C

Chemically, carbon is an element with the symbol C and atomic number 6. Carbon, which is categorized as a nonmetal, is a solid at ambient temperature. Unattached or attached to an atom, an electron is a negatively charged subatomic particle (not bound). One of the three main types of particles inside an atom, along with protons and neutrons, is an electron that is linked to the atom.

Learn more about carbon here:

https://brainly.com/question/22530423

#SPJ4

To convert 25 g of liquid water to vapor at 100°C, we need 67.7 kJ of energy.

To change 25 g of liquid water to steam, we need to calculate the energy required for the following two processes:

Heating the water from 100°C to its boiling point at atmospheric pressure (100°C).

Vaporizing the water at its boiling point at atmospheric pressure (100°C) to steam at the same temperature.

Let's start with the first step. The specific heat capacity of water is 4.18 J/g°C, so we need:

q1 = m * c * ΔT

where

m = mass of water = 25 g

c = specific heat capacity of water = 4.18 J/g°C

ΔT = change in temperature = (100 - 0)°C = 100°C

q1 = 25 g * 4.18 J/g°C * 100°C

q1 = 10450 J

This means that we need 10450 J of energy to heat 25 g of water from 0°C to 100°C.

Now let's move on to the second step, which is vaporizing the water. The molar heat of vaporization of water is 40.6 kJ/mol.

Since we know the mass of water (25 g), we need to convert it to moles:

n = m / M

where

m = mass of water = 25 g

M = molar mass of water = 18.015 g/mol

n = 25 g / 18.015 g/mol

n = 1.387 mol

The energy required to vaporize the water is:

q2 = n * Δ\(H_v_a_p\)

where

Δ\(H_v_a_p\) = molar heat of vaporization of water = 40.6 kJ/mol

q2 = 1.387 mol * 40.6 kJ/mol

q2 = 56.3 kJ

Therefore, the total energy required to change 25 g of liquid water to steam at 100°C is the sum of q1 and q2:

q = q1 + q2

q = 10450 J + 56.3 kJ

q = 67.7 kJ

So, we need 67.7 kJ of energy to change 25 g of liquid water to steam at 100°C.

To learn more about heat of vaporization refer to:

brainly.com/question/29401184

#SPJ4

We must take into account the following stages in order to determine the amount of energy needed to convert 25 g of liquid water into steam at 100°C: Calculate how many moles of water (H2O) are contained in 25 g.

Number of moles of H2O = mass/molar mass = 25 g / 18.015 g/mol = 1.388 mol. The molar mass of H2O is 18.015 g/mol. Determine the amount of energy needed to evaporate one mole of water. Water has a molar heat of vaporization (Hvap) of 40.6 kJ/mol. Determine the amount of energy necessary to evaporate 1.388 moles of water. 1.388 moles of water must be vaporized in order to produce 40.6 kJ/mol of energy, which equals 56.4 kJ. Hence, 56.4 kJ of energy are needed to convert 25 g of liquid water to steam at 100°C. The molar heat of vaporization for liquid water is 40.6 kj/mole.

learn more about  water here:

https://brainly.com/question/28465561

#SPJ4

It is as critical for your tap water to be a good buffer as it is for the water at the nearest lake to be a good buffer.

A  buffer is a solution that resists changes in acidity and alkalinity. The pH of a buffer does not change easily hence it stabilizes a solution.

It is important to know that water in a lake ought to be buffered because of the survival of organisms in after that can not tolerate a sudden change in pH.

As such the bodies of living organism also need to maintain a delicate pH balance. Hence, it is as critical for your tap water to be a good buffer as it is for the water at the nearest lake to be a good buffer.

Learn more about buffer: https://brainly.com/question/24188850

When heating a dicarboxylic acid, it will form an anhydride, which is a type of condensation reaction.

This type of reaction involves the removal of a molecule of water to form a new molecule. An anhydride is a compound that is formed when two molecules of a carboxylic acid undergo a condensation reaction, in which water is eliminated from the reaction mixture. This results in the formation of a cyclic anhydride.

Anhydride is a type of chemical compound that is characterized by the removal of water (H2O) from a substance. Anhydrides are formed when two or more molecules join together with the elimination of water molecules. The removal of a water molecule occurs due to the interaction of a hydroxyl group (-OH) and a hydrogen ion (H+). A cyclic anhydride, on the other hand, is a type of anhydride that is formed when two molecules of a carboxylic acid undergo a condensation reaction, in which water is eliminated from the reaction mixture. This results in the formation of a cyclic anhydride.

Learn more about cyclic anhydride from the given link:

https://brainly.com/question/32387037

#SPJ11

The chemical formula for francium phosphide is FrP.

A chemical formula is described as a way of presenting information about the chemical proportions of atoms that constitute a particular chemical compound or molecule, using chemical element symbols, numbers, and sometimes also other symbols, such as parentheses, dashes, brackets, commas and plus and minus signs.

There are three main types of chemical formulas which include :

Learn more about chemical formulas at: https://brainly.com/question/11574373

#SPJ1

Answer:

Is water the only liquid? If not, name 5 more

Water, ethanol, household bleach, blood, paint, milk, gasoline, mineral oil, acetone and butyl alcohol are examples of liquids. Liquids' properties allow them to flow or be poured easily into containers, lava

water is not the only liquid.

Answer:

apple juice, milk, smoothie, blood, urine

The answer is d. Ozone can be formed as a result of the sun's action on nitrogen oxides and hydrocarbons. This is known as photochemical smog.

A type of smog called photochemical smog is created when UV radiation from the sun and atmospheric nitrogen oxides interact. The morning and afternoon hours are when this is most noticeable as a brown haze, especially in warm, densely populated places.

When sunlight reacts with nitrogen oxides, together with at least one other volatile organic compound (VOC) that is present in the atmosphere, photochemical smog is created.

Therefore, the concentration of secondary pollutants is what causes the process that results in photochemical smog and acid rain.

Due to the concentration of secondary pollutants, photochemical haze and acid rain are produced.

Learn more about photochemical smog here

https://brainly.com/question/27960448

#SPJ11

Explanation:

Refer to pic......... ..

Answer:

A comet

Explanation:

Comets  travel so fats through the solar system that they melt which give them their glowy tail

The correct answer is option D. Ninety-six percent of the body mass is made up of carbon, oxygen, hydrogen, and nitrogen. These four elements are fundamental building blocks of organic compounds found in living organisms.

They form the basis of carbohydrates, lipids, proteins, and nucleic acids, which are essential components of cells and tissues in the human body. The combination of carbon, oxygen, hydrogen, and nitrogen enables the formation of complex molecules necessary for various biological processes and functions. Carbon, oxygen, hydrogen, and nitrogen are vital elements that constitute a significant portion of the human body's mass. Carbon is the backbone of organic molecules due to its unique ability to form stable covalent bonds with other atoms, including itself. It is present in carbohydrates, lipids, proteins, and nucleic acids, which are major components of cells and tissues. Oxygen is essential for cellular respiration, the process by which cells convert nutrients into energy. It is a crucial component of water (H2O) and participates in many biochemical reactions. Hydrogen, the lightest and most abundant element, is found in water and various organic compounds. It plays a role in maintaining pH balance, serving as a transport molecule, and participating in chemical reactions within cells. Nitrogen is a key component of proteins and nucleic acids, including DNA and RNA. Proteins are involved in various structural, enzymatic, and regulatory functions in the body, while nucleic acids carry genetic information and participate in protein synthesis. Together, carbon, oxygen, hydrogen, and nitrogen make up approximately 96% of the body's mass, highlighting their crucial roles in the composition and functioning of living organisms.

Learn more about nucleic acids here: brainly.com/question/11737667

#SPJ11

1) The substances present before the reaction has occurred.

2) The substances formed after the reaction has occurred.

3) A negatively charged ion, typically non-metal, that gains electrons to become stable.

4) A positively charged ion, typically metal, that losses electrons to become stable.

5) A chemical reaction in which the reactants absorb heat energy from the surroundings to form products.

6) A chemical reaction in which the reactants release heat energy into the surroundings to form products.

To calculate the volume percent of dioxane we will apply the following formula:

In this case, the solute will be dioxane, and the volume will be 69.3 mL.

To calculate the volume of solution we will sum both volumes:

Volume of solution = Volume of dioxane + Volume of Toluene

Volume of solution = 69.3 mL + 1300 mL

Volume of solution = 1369.3 mL

We are given all the data with a significant digit, therefore we must report the result also with a significant digit. So the answer will be.

The volume percent of dioxane in the solution is 5.1 %(v/v)

The inorganic substance with the chemical formula BaSO4 is barium sulfate (or sulphate). It is a tasteless, crystalline white substance that is insoluble in water.

A barium cation and a sulfate anion are the two elements that make up barium sulfate. There are four oxygen atoms joined to the sulfur. A sulfate salt of barium, known as BaSO4, is present in the mineral barite. It is a white crystalline substance that is soluble in strong acids but insoluble in water and alcohol.

Elements include both barium and bromine. Barium is a metal belonging to Group 2 of the modern periodic table, and bromine is a non-metal belonging to Group 17 (halogen).

To know more about chemical formula visit:-

https://brainly.com/question/29031056

#SPJ1

Answer:

Explanation:

To find the number of moles in a substance given it's number of entities we use the formula

\(n = \frac{N}{L} \\ \)

where n is the number of moles

N is the number of entities

L is the Avogadro's constant which is

6.02 × 10²³ entities

From the question we have

\(n = \frac{2.4 \times {10}^{23} }{6.02 \times {10}^{23} } = \frac{2.4}{6.02} \\ = 0.398671096...\)

We have the final answer as

Hope this helps you

In fact, sodium, potassium, or ammonium sulfates enhance ligand-protein interactions in HIC while also stabilizing protein structure. As a result, the most prevalent ions are (NH4)2SO4, Na2SO4, NaCl, KCl, and CH3COONH4. Figure 1 depicts how various salts can influence selectivity. The highest resolution of four standard proteins was achieved by starting with 1.7 M ammonium sulfate.

Because each salt has a different capacity to encourage hydrophobic interactions, selecting a salt for an HIC separation can be a trial and error process. When the concentration of a salt rises, the quantity of protein bound increases almost linearly up to a certain salt concentration and then exponentially at greater concentrations.When compared to other salts, ammonium sulfate often provides the greatest clarity at a particular concentration and can be used at ratios up to 2 M.

When using sodium chloride, concentrations of up to 3 M are typically needed.

Although sodium sulfate is an excellent salting-out substance, issues with protein solubility may preclude its use at high amounts.

Working with ammonium sulfate at pH levels above 8.0 is not advised.

The particles of the solution is smaller than that of the colloids and suspension.

Solution has the smallest particle, and the particles of solution are uniformly distributed and too small in which light can difficultly scatter. Colloids have larger particles than the solution and colloids can scatter light but do not settle out. Suspensions have the largest particles from both solution and colloids. Particles in solution is tinier than that of colloids. The particles in solution can not be seen in microscope, while the particles in colloids can be seen with the microscope.

So we can conclude that: The particles of the solution is smaller than that of the colloids and suspension.

Learn more about Solution here: https://brainly.com/question/25326161

#SPJ1

The cathodic protection of Cu(s) can be provided if it is connected galvanically to Zn.

The metal with the more reduction potential will act as the anode and undergo oxidation, while the metal with the more positive standard reduction potential will act as the cathode and undergo reduction.

As Cu has a greater reduction potential than Zn, it has a greater capacity to reduce than that of Zn. So by galvanically connecting to zn, we can say that the cathodic protection of Cu can be obtained.

To learn more about cathodic protection :

brainly.com/question/32659293

A potter can use chemistry to better understand how a pottery wheel speed impacts the pot's height. OB. A potter's design can benefit from chemistry.

Several verbal and nounal senses of the word "design" exist. Design refers to the process of outlining a project's final form and functionality through the use of sketches. For instance, before building a new bridge, the government will hire a team to design it. Humans have been proven to develop an immediate thought within a few seconds, but once that impression has matured, it can take much longer to change that perception.

Chemistry is the area of science that focuses.

To know more about design visit :

https://brainly.com/question/14035075

#SPJ1

The relationship between pH, pOH, and the concentration of hydroxide ions in a solution is given by:

pH + pOH = 14

If a solution has a pOH of 7.39, we can find its pH by subtracting the pOH from 14:

pH = 14 - pOH

pH = 14 - 7.39

pH = 6.61

Therefore, the solution has a pH of 6.61.

The pH scale, which describes the connection between pH, pOH, and the quantity of hydroxide ions, is an essential concept in chemistry. A pH of 7 is regarded as neutral, whereas values below 7 are acidic and those over 7 are basic (also called alkaline).

learn more about , pOH here:

https://brainly.com/question/480457

#SPJ4

The IUPAC name for the given alkane is 2,3,5-trimethyl 4-propylheptane. (Option B)

The International Union of Pure and Applied Chemistry (IUPAC) is an international body associated with chemistry and related sciences and technologies. It is an international federation of National Adhering Organizations focused on the advancement of the chemical sciences, particularly by developing nomenclature and terminology.

In organic chemistry, an alkane, or paraffin, refers to an acyclic saturated hydrocarbon and consists of hydrogen and carbon atoms arranged in a tree structure in which all the carbon–carbon bonds are single. IUPAC nomenclature refers to naming a molecule's longest chain of carbons connected by single bonds, whether in a continuous chain or in a ring. The IUPAC name of the given alkene is 2,3,5-trimethyl 4-propylheptane as the parent chain has the most number of branches as substitutes.

Note: The question is incomplete as it is missing options which are A) 3,5,6-trimethyl-4-propylheptane B) 2,3,5-trimethyl 4-propylheptane C) 4-(secbutyl)-2,3-dimethylheptane D) none of the above.

Learn more about IUPAC:

https://brainly.com/question/27649832

#SPJ4

Answer:

Si se usan 50 gramos de calcio y óxigeno, se obtienen 70 gramos de óxido de calcio.

Explanation:

Hola,

En este caso, la reacción llevada a cabo es:

\(2Ca+O_2\rightarrow 2CaO\)

De este modo si asumimos el ejemplo dado, 50 gramos de calcio, cuya masa atómica es 40 g/mol y 50 g de oxígeno, cuya masa atómica como gas diatómico es 32 g/mol, antes de calcular los gramos de óxido de calcio producidos, debemos identificar el reactivo límite. Así, calculamos las moles de calcio disponibles en 50 g:

\(mol_{Ca}^{disponible}=50gCa*\frac{1molCa}{40gCa} =1.25molCa\)

Y también las moles de calcio consumidas por los 50 g de oxígeno, utilizando su relación molar 2:1:

\(mol_{Ca}^{consumidas\ por\ O_2}=50gO_2*\frac{1molO_2}{32gO_2} *\frac{2molCa}{1molO_2} =3.125molCa\)

Por lo tanto, hay menos calcio disponible que el que consume el oxígeno, por lo que el calcio esel reactivo límite. Ahora, con este, calculamos los gramos de óxido de calcio, cuya masa molar es 56 g/mol, que se producen:

\(m_{CaO}=1.25molCa*\frac{2molCaO}{2molCa}* \frac{56gCaO}{1molCaO}\\ \\m_{CaO}=70gCaO\)

Esto quiere decir que de 50 gramos de oxígeno, solo 20 gramos reaccionan para formar 70 gramos de óxido de calcio.

Saludos!

Answer:

69.9 g of CaO will be produced. ≅ 70 g

Explanation:

First of all you need to make the reaction:

2Ca + O₂ → 2 CaO

Determine the moles of each reactant:

10 g Ca / 40.08 g/mol = 0.25 moles

4 g O₂ / 32 g/mol = 0.125 moles

There is no limiting reagent in this reaction, we can use both elements.

Ratio between Ca and CaO, is 2:2. For 0.25 moles of Ca I would make 0.25 moles of CaO. We convert the moles to mass:

0.25 mol . 56.08 g / 1mol = 14 g

Let's think when you have the same mass of reactant:

50 g Ca/ 40.08 g/mol = 1.24 moles

50 g O₂ / 32 g/mol = 1.56 moles

For 1 mol of oxygen I need 2 moles of calcium, so If I have 1.56 moles, I would need the double, 3.12. Notice that Ca is the limiting reagent (we need 3.12 moles of reactant, but we only have 1.24). Now we need to work with it. If 2 moles of Ca, makes 2 moles of CaO, then 1.24 moles, will produce the same amount of oxide. We finally convert the moles to mass: 1.24 mol . 56.08 g/mol = 69.9 g

Answer:

CHO 1:1:1

Explanation:

so to simplify just multiply each substance by 100g

carbon 0.414*100 = 41.4g

hydrogen 0.354*100 = 3.45g

oxygen 0.552*100= 55.2g

Now just divide each by its atomic mass

carbon  41.4g/12.0107 = 3.44692649

hydrogen 3.45g/1.00784 = 3.42316241

oxygen 55.2g/16.00= 3.45

They are all approximately 1:1:1 So empirical formula is

C3.4H3.4O3.4 ~ CHO

The  map that would I bring with me as I navigate the wilderness is Topographic maps.

Because topographic maps use contour lines to indicate the geometry of landforms, they are excellent for wilderness navigation (mountains, valleys, ridges, saddles).

Reading topographic maps has somewhat lost some of its appeal with the development of reliable, accurate GPS devices and phone navigation apps.

However, no matter how sophisticated and costly your equipment is, it could still run out of batteries, malfunction due to excessive dampness, cease functioning in the cold (cough, iPhones), or fall off a cliff and smash.

Additionally, the satellite signal that your device requires to locate you will always decide to go out at the worst possible time.

Learn more about Topographic maps from

https://brainly.com/question/71071
#SPJ1

Answer:

Polonium > Tellurium > Selenium> Sulfur > Oxygen

Explanation:

In the periodic table, the trend of the atomic radius is; It increases down the group.

The elements when arranged in increasing atomic radius is given as;

Polonium > Tellurium > Selenium> Sulfur > Oxygen

The element in group 2 4th period is Calcium and it's Electronic configuration is - \(1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2}\).

How to find the noble gas configuration?

Sharing valence electrons is all that is necessary to create a noble gas electron configuration. The atom will most likely give away its remaining electrons and turn into an electrically charged ion if it receives less than four. It will share the electrons and reach noble gas configuration if it gets more than 4.

Step 1 -For finding block:

​:- See the block in which the last electron enters. The element will belong to that block.

For finding period:

:- Highest value of the principal quantum no. will denotes the period no.

Afbau Principle:

​:- 1s 2s 2p 3s 3p 4s 3d 4p 5s 4d 5p 6s 4f 5d 6p 7s 5f 6d 7p 8s

Step 2 -Since element is in group, therefore last electron will enter into s-block and since it is in 4th period, therefore highest value of principal quantum number is 4

Element is Calcium

Electronic configuration - \(1s^{2} 2s^{2} 2p^{6} 3s^{2} 3p^{6} 4s^{2}\)

Therefore the element is calcium.

To learn more about noble gas configuration, click on link below

https://brainly.com/question/26084288

#SPJ1

Answer:

it's B

Explanation:

the small intestine is know to carrie out most of the digestive process absorbing almost all the nutrients and well the large intestine absorbs water. hope it helps :)

Answer: A-Nebulae can form stars, comets cannot

Explanation: Simply comets get destroyed and Nebulae are often star-forming regions, such as in the "Pillars of Creation" in the Eagle Nebula. In these regions, the formations of gas, dust, and other materials "clump" together to form denser regions, which attract further matter, and eventually will become dense enough to form stars.

While Nebulae is a body of interstellar cloud, made of cosmic dust, hydrogen etc , Comets are balls of rocks, frozen gases, that revolve the Sun.

Nebulae can form stars, but comets cannot. Option A is correct

Nebulae is a different body of interstellar cloud, they are made out of cosmic dust, hydrogen, helium, and molecular clouds.

While Comets are balls of rock, frozen gases, and other particles that revolve around the Sun.

Read more about Galaxy

https://brainly.com/question/2905713

Answer:

false

Explanation:

there are more than 2 forces of nature that change the environment and landforms

Carbonation is a crucial process in rock breakdown and formation of karst topography, involving the formation of calcium bicarbonate through precipitation of carbon dioxide and dissolved substances. This process affects rocks' physical properties and regulates atmospheric carbon dioxide concentration.

Calcium bicarbonate produced in the chemical weathering process of carbonation causes the rock to become weak and break down. This occurs when rainwater reacts with carbon dioxide and turns into a weak carbonic acid solution that can dissolve rocks. As a result, carbonation is an essential process in the breakdown of rocks and formation of karst topography.The chemical formula of calcium bicarbonate is Ca(HCO3)2. It is formed when rainwater, which contains carbon dioxide, reacts with rocks that contain calcium carbonate (CaCO3) like limestone and marble. The reaction is as follows:

CaCO3 + H2CO3 → Ca(HCO3)2

The carbonic acid solution reacts with the rock and breaks it down into calcium bicarbonate and other dissolved substances. Calcium bicarbonate is carried away by groundwater and eventually deposits to form stalactites, stalagmites, and other types of cave formations.

This chemical weathering process of carbonation not only affects the physical properties of rocks but also plays a significant role in the carbon cycle of the Earth. Carbonation helps to regulate the concentration of carbon dioxide in the atmosphere by removing it and storing it underground in the form of calcium carbonate deposits.

To know more about Carbonation Visit:

https://brainly.com/question/14581272

#SPJ11