if 5.05 kj of heat evolved from a neutralization of 155 mmols of a monoprotic acid, what is the molar heat of neutralization (in kj/mol) of that acid?

Answer:8

842.46 or to the next whole number

Explanation:

just multiply the mass of iron with the volume mL you have.

The mass of the iron whose volume and density are 111 ml and 7.847 g/cm³ respectively is 871.01 grams.

The product of density and volume of a substance represents its mass. Mathematically -

M = V x ρ

where -

ρ - density

M - mass

V - volume

Given is iron in liquid form. It occupies a total volume of 111 ml.

The mass of liquid iron can be calculated using -

M = V x ρ

Volume of iron [V] = 111 ml = 111 cm³.

Density of iron [ρ] = 7.847 g/cm³

Therefore, we can write -

M = 7.847 x 111

M = 871.01 grams

Therefore, the mass of the iron whose volume and density are 111 ml and 7.847 g/cm³ respectively is 871.01 grams.

To solve more questions on Mass - Density relation, visit the link below-

brainly.com/question/28348989

#SPJ2

Explanation:

In BaO + CO2 => BaCO3, two different molecules are being recated to form a different compound.

This is called a synthesis reaction.

Answer:

The reaction which is a synthesis reaction is

BaO + CO₂→ BaCO₃

Explanation:

Explanation:

charged particles=8 which is proton and proton=no.of electron. That's why 8 particles are revolving round this center. And this atom structure is of oxygen

If the center of an atom has 8 charged particles that are protons as the neutrons are neutral there will be 8 negative charges that are electrons revolving around the center nucleus.

An atom is defined as the smallest unit of matter which forms an element. Every form of matter whether it is  solid,liquid or  gas consists of atoms . Each atom has a nucleus which is composed of protons and neutrons and shells in which the electrons revolve.

The protons are positively charged particles  and neutrons are neutral and hence the nucleus is positively charged. The electrons which revolve around the nucleus are negatively charged  particles and hence the atom as a whole is neutral and stable due to presence of oppositely charged particles.

Atoms of the same element are similar as they have number of sub- atomic particles which on combination do not alter the chemical properties of the substances.

Learn more about atom,here:

https://brainly.com/question/13654549

#SPJ2

Answer:

Explanation:

Cu(s) + 2Ag+  ======> Cu^(2+) + Ag(s)

Notice what happened. Silver started out as an ion. It took on 2 electrons that were donated by the copper.

The silver then became a solid ppte. This equation wil take on much more meaning when you take up oxidation and reduction. Until then, you need only know who gave up elections and who took them up.

The structures can be ordered from least to greatest photosynthesis as Stem and Roots, Leaves, Mesophyll Cells, and Chloroplasts.

When considering the efficiency of photosynthesis, the structures can be ordered from least to greatest photosynthesis as follows:

1. Stem and Roots: While stems and roots play vital roles in plant support, nutrient uptake, and water transport, they are not directly involved in photosynthesis. As a result, they have minimal to no contribution to photosynthesis.

2. Leaves: Leaves are the primary photosynthetic organs of plants. They contain specialized cells called chloroplasts, which house the pigment chlorophyll responsible for capturing light energy. Leaves are well-adapted for photosynthesis, with a large surface area and a network of veins that transport water, minerals, and sugars.

3. Mesophyll Cells: Within the leaves, mesophyll cells are the specific site of photosynthesis. These cells contain abundant chloroplasts and are responsible for the majority of photosynthetic activity. Mesophyll cells are divided into two types: palisade mesophyll cells, which are densely packed and located towards the upper leaf surface, and spongy mesophyll cells, which are more loosely arranged and found beneath the palisade layer.

4. Chloroplasts: Chloroplasts are the organelles where photosynthesis occurs. These structures are present within the mesophyll cells of leaves. Chloroplasts house the pigments and enzymes necessary for capturing light energy, converting carbon dioxide and water into glucose, and releasing oxygen as a byproduct.

It is important to note that while the structures listed above demonstrate varying degrees of photosynthetic activity, all of them are involved in the process to some extent, with leaves and their mesophyll cells being the primary sites of photosynthesis in plants.

Know more about  photosynthesis   here:

https://brainly.com/question/26568636

#SPJ8

The bonds in decreasing electronegativity difference is NaCl > HCl > Cl₂.

What is electronegativity difference?

Electronegativity difference is a measure of the difference in electronegativity values between two atoms in a chemical bond. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond.

The electronegativity values (Pauling scale) for the elements involved in the bonds are as follows:

Sodium (Na) = 0.93

Chlorine (Cl) = 3.16

Hydrogen (H) = 2.20

Now, let's analyze the bonds:

NaCl: The electronegativity difference is 3.16 - 0.93 = 2.23.

Cl₂: The electronegativity difference is 3.16 - 3.16 = 0.

HCl: The electronegativity difference is 3.16 - 2.20 = 0.96.

Based on these values, the bonds arranged in decreasing electronegativity difference are:

NaCl > HCl > Cl₂

Therefore, the correct answer in terms of decreasing electronegativity difference is: NaCl > HCl > Cl₂.

To learn more about electronegativity difference,

https://brainly.com/question/14481608

#SPJ4

Some animals would be forced to migrate due to cutting of forest , Option D is the correct answer.

The complete question is

Humans clear-cut a forest. Which is one possible way that animals would most likely be affected by this action? Some animals would adapt. Some animals would go extinct. Some animals would evolve. Some animals would be forced to migrate.

Deforestation means cutting down trees of the forest for wood , or for making more space for living.

Deforestation leads to destruction of habitats of animals .

The balance of the nature gets disturbed , the sea and water bodies get dried up , leading to no water for the animals in the forest.

Animals need big bushes and trees to hide and live.

The Ecosystem gets destroyed because of the cutting of trees by human and so this has lead the animals to migrate.

Therefore Option D is the correct answer.

To Know more about Deforestation

https://brainly.com/question/17178423

#SPJ1

The receptor will be forced away from the beads and rinsed out as a result of the ligand. often entail signal molecules attaching to a target cell's surface protein.

The most basic bacteria to the most sophisticated multicellular animals all depend on particular interactions between molecules to survive. For instance, the replication and decoding of genetic material demand the careful matching of nucleotide sequences that are directed by certain interactions with proteins. Selective interactions between proteins, nucleic acids, and lipids control the assembly of the macromolecular complexes that create cellular architecture and the metabolic processes that keep cells alive. For this reason, a quantitative examination of biomolecular interactions is essential to comprehending every aspect of cellular behavior.

Learn more about Proteins here-

https://brainly.com/question/17095120

#SPJ4

the particular gas effusion was 21.0. and the methane effusion rate is 47.0 The molar mass of the unknown gas is approximately 28.6 g/mol

The process through which a gas manages to escape through with a small hole or highly permeable barrier is known as effusion. A gas's rate of effusion is inversely proportional to its molar mass squared. The following equation describes this relationship: rate1 / rate2 = (sqrt(molar mass2) / sqrt(molar mass1)). where rate1 and rate2 are the rates of effusion of the two gases and molar mass1 and molar mass2 are the molar masses of the two gases.Given the rate of effusion of the unknown gas is 21.0 mL/min, and the rate of effusion of pure methane (CH4) is 47.0 mL/min, we can use the above equation to find the molar mass of the unknown gas:

(21.0 mL/min) / (47.0 mL/min) = sqrt(molar mass unknown) / sqrt(16.04 g/mol)

Squaring both sides of the equation, we get:

(21.0 mL/min)^2 / (47.0 mL/min)^2 = (molar mass unknown) / (16.04 g/mol)

Solving for molar mass unknown we get:

molar mass unknown = (16.04 g/mol) * (21.0 mL/min)^2 / (47.0 mL/min)^2

The molar mass of the unknown gas is approximately 28.6 g/mol

Please note that the above calculation is based on the assumption that the temperature and pressure are the same for both gases and that the gases are ideal

Lear more about effusion here:

https://brainly.com/question/2655041

#SPJ4

Answer:

88.5914811 it depends on the water

Explanation:

what you have to do it divide the mass by the volume.

Answer:

Group 1

Explanation:

The alkali metals would do anything to lose their one electron and become a cation with a plus 1 charge. They basically have the lowest electronegativity values.

The Answer is:

C.carbon

Answer:

Water is a remarkable substance, and its unique properties are largely due to the presence of polar covalent bonds and hydrogen bonds in its structure. These characteristics play a crucial role in the physical and chemical properties of water, making it essential for life as we know it.

Explanation:

The polar covalent bonds in water arise from the unequal sharing of electrons between oxygen and hydrogen atoms. This results in the oxygen atom having a partial negative charge (δ-) and the hydrogen atoms having partial positive charges (δ+). These charges create polarity within the water molecule, leading to the formation of hydrogen bonds.

Hydrogen bonds occur when the partially positive hydrogen atom of one water molecule is attracted to the partially negative oxygen atom of another water molecule. These hydrogen bonds are relatively weak individually, but when present in large numbers, they contribute to the cohesion, surface tension, and high boiling point of water.

The importance of these bonds is manifold. The cohesion between water molecules due to hydrogen bonding enables water to form droplets, have a high surface tension, and flow freely, facilitating transport within organisms and in the environment. Additionally, hydrogen bonding leads to the high specific heat capacity and heat of vaporization of water, making it an effective regulator of temperature in living organisms and ensuring stable environmental conditions.

Furthermore, hydrogen bonds play a crucial role in the unique properties of water as a solvent. The polar nature of water allows it to dissolve a wide range of substances, including ionic compounds and polar molecules, facilitating various biological processes such as nutrient transport and chemical reactions in cells.

Answer: Magnesium loses two electrons whilst sulfur gains tw

Answer:

they are similar becauze they measure temperature

Answer:

Boron

Explanation:

Answer:

Boron

Explanation:

Boron is the first element of Group 13 and is the only metalloid of the group. Its chemical symbol is B, and it has an atomic number of 5. Boron has the electron configuration [He] 2s 2 2p 1 and prefers an oxidation state of +3. Boron has no natural elemental form; it forms compounds which are abundant in the Earth's crust.

The liquid with the greatest viscosity flows the slowest.

Viscosity is a property of fluids that measures their resistance to flow. It is determined by the internal friction between the molecules of the fluid. liquids with high viscosity flow slowly, while liquids with low viscosity flow quickly.

Among the given options, the liquid with the greatest viscosity would be the one that flows the slowest. Unfortunately, the question does not provide a list of liquids to choose from. However, some common liquids and their viscosities can be used as examples to understand the concept.

For instance, honey has a high viscosity, which means it flows very slowly. On the other hand, water has a low viscosity and flows quickly. Motor oil falls in between with a medium viscosity.

Without the specific options mentioned in the question, it is not possible to determine which liquid has the greatest viscosity. However, it is important to note that liquids with higher molecular structures or thicker consistencies tend to have higher viscosities.

About liquids here:

https://brainly.com/question/20922015

#SPJ11

Answer:

The rate of dissolving of a solute in a solvent is faster when the solute and solvent are stirred, the solvent is warmer, or the solute consists of smaller particles with more surface area.

answer

The meter stick should be placed at the starting position of car 2 at the base of the ramp so that it measures the part of car 2 that will end up the furthest away from the base of the ramp.

explanation

i dont know if this is right or not but my teacher gave me a 90 so there is a 50/50 chance its right or wrong

A type of biotechnology called artificial selection is deliberately breeding plants or animals to promote or eliminate specific desirable qualities. Crops may be carefully bred by farmers, for instance, to increase their resistance to pests or drought.

Artificial selection is a type of biotechnology that involves selectively breeding plants or animals to enhance or suppress certain desirable traits.

For example, farmers may selectively breed crops to make them resistant to pests or droughts.

One benefit of artificial selection for individuals is that it can lead to higher crop yields, which can result in increased profits for farmers. However, one risk of artificial selection for individuals is that it can lead to the loss of genetic diversity in crops, which can make them more vulnerable to disease outbreaks.

One benefit for society is that artificial selection can help to alleviate hunger and food shortages by producing more food. However, one risk for society is that artificial selection can lead to the creation of monocultures, which are vulnerable to pests and disease outbreaks.

One benefit for the environment is that artificial selection can lead to the production of crops that require fewer pesticides and herbicides, which can reduce pollution. However, one risk for the environment is that artificial selection can lead to the loss of biodiversity, which can negatively impact ecosystems.

Attached is an image of a farmer selectively breeding crops.

For more such questions on biotechnology, click on:

https://brainly.com/question/29772046

#SPJ11

Answer: northern hemisphere

Explanation: I looked it up. Plus I took a test with this question and when the teacher went over the answer i got it right.

The pH of the resulting solution is 2.98. Option B is Correct.

The pH of a solution is a measure of its acidity or basicity, on a scale of 0 to 14. The pH of a solution is calculated by taking the negative logarithm of the hydrogen ion (H+) concentration.

The pH of the resulting solution, we need to know the concentration of H+ ions in the initial solution and in the final solution. We can use the following equation to calculate the pH:

pH = -log[H+]

The initial concentration of H+ ions is 0.010 M, and the final volume of the solution is 100.0 mL. To find the concentration of H+ ions in the final solution, we can use the formula:

[H+] = [solute] * V

here [solute] is the concentration of the HCl and V is the volume of the solution.

The concentration of HCl in the initial solution is not given, but we can assume it is also 0.010 M. Therefore, the concentration of H+ ions in the final solution is:

[H+] = 0.010 M * 100.0 * 2.98 mL

= 2.98 mM

The pH of a solution can be calculated using the following equation:

pH = -log[H+]

pH = -log(2.98 mM)

pH = 2.98

Therefore, the pH of the resulting solution is 2.98. Option B is Correct.

Learn more about solution visit: brainly.com/question/25326161

#SPJ4

Option A. Hydrogen Ions

The dissolution of carbon dioxide in the oceans produce hydrogen ions as when carbon dioxide is dissolved in the ocean it leads to Ocean Acidification. This Acidification produces the hydronium ions as more acidic nature implies higher concentrations of hydrogen ions.

Carbon dioxide is a gas that readily dissolves in water to give Carbonic Acid , bicarbonate ions and carbonate ions , all of which are acidic in nature. This lowers the pH of the ocean making the waters more acidic. Therefore the acidity of oceans is largely dependent on carbon compounds and the amount of Carbon dioxide.

The reaction of Carbon dioxide with water to give carbonic acid :

                                CO2 + H2O → H2CO3

(To know more about ocean acidification : https://brainly.com/question/7604502 )

According  to stoichiometry and concept of Avogadro's number there are 3.61×10²⁴ particles for 4 moles of KClO₃.

It is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.As 2 moles of potassium chlorate gives 3 moles of oxygen , thus 4 moles of potassium chlorate will give 4×3/2=6 moles , 6 moles have 6×6.023×10²³=3.61×10²⁴ particles.

Thus,  there are 3.61×10²⁴ particles for 4 moles of KClO₃.

Learn more about stoichiometry,here:

https://brainly.com/question/9743981

#SPJ1

When the wavelength increases, wave frequency decreases so if the if the wavelength is increased to 10m then the frequency will be decrease at the same rate.

Frequency and wavelength have inverse relationship to each other. The wave with the greatest frequency has the shortest wavelength. If the frequency increases twice it means one-half the wavelength so we can conclude that if the wavelength is increased to 10m then the frequency will be decrease at the same rate.

Learn more about wavelength here: https://brainly.com/question/10750459

Answer:

4 mol MgO

Explanation:

convert the limiting reactant to product by using dimensional analysis in order to see how many moles total can be created of the product

4 mol Mg x \(\frac{2 mol MgO}{2 mol Mg}\) = 4 mol MgO