How many percent by mass of mercury are there in a sample of tap water with a mass of 750 g containing 2.2g of Hg?

The benzocaine molecule has 23 atoms in all (s). There are two oxygen atoms, nine carbon atoms, one nitrogen atom, and eleven hydrogen atoms (s). Therefore, the chemical formula for benzocaine is:

C9H11NO2

Unlike the empirical formula, which gives the numerical proportions of atoms of each type, the molecular formula, as shown above, indicates the numbers of each type of atom in a molecule without providing structural information.

Stoichiometry, or the computation of the relative quantities of reactants and products in chemical processes, is based on the chemical formula above. The quantity of each element specified in the chemical formula must remain constant according to the law of conservation of mass.

Learn more about molecule here:
https://brainly.com/question/19922822

#SPJ9

Answer:

The intermolecular forces between CO3^2- and H2O molecules are;

1) London dispersion forces

2) ion-dipole interaction

3) hydrogen bonding

Explanation:

Intermolecular forces are forces of attraction that exits between molecules. These forces are weaker in comparison to the intramolecular forces, such as the covalent or ionic bonds between atoms in a molecule.

Considering CO3^2- and H2O, we must remember that hydrogen bonds occur whenever hydrogen is bonded to a highly electronegative atom such as oxygen. The carbonate ion is a hydrogen bond acceptor.

Also, the London dispersion forces are present in all molecules and is the first intermolecular interaction in molecular substance. Lastly, ion-dipole interactions exists between water and the carbonate ion.

The molecule of water and carbonate has consisted of hydrogen bonding, dipole interaction, and London dispersive force.

The intermolecular force has been defined as the attractive force that has been present within the molecules in between the atoms. The interaction between the molecules has been mediated by the difference in the electronegativities and the dipole interaction.

The bonding of hydrogen atoms with more electronegative elements results in the hydrogen bond. In both the molecules hydrogen has been bonded with the oxygen atom, thus there has been the presence of hydrogen bonding.

The interactions between carbon and oxygen has resulted in the dipole, thus there has been dipole interaction with the molecule. The force of attraction between the ion and dipole has been the London dispersive force.

Thus, the molecule of water and carbonate has consisted of hydrogen bonding, dipole interaction, and London dispersive force.

For more information about the intermolecular force, refer to the link:

https://brainly.com/question/17111432

The highest electric force exerted by charges -4 ×10⁻⁵ C and 3 ×10⁻⁵ C  placed 0.5 m apart is equal to 43.15 N.

The lowest electric force exerted by charges 3 ×10⁻⁵ C and 3 ×10⁻⁵ C  placed 1 m apart is equal to 8.10 N.

According to Coulomb’s law, the force of attraction between two charges is equal to the product of their charges and is inversely proportional to the square of the distance. This electric force applies along the line joining the two charges.

The magnitude of the electric force can be written as follows:

\(\displaystyle F = k\frac{q_1q_2}{r^2}\)

where k is constant proportionality = 8.99 × 10⁹ N.m²/C².

Given the charge on one point charge, q₁ =  4 ×10⁻⁵ C

The charge on the other point charge, q₂ = - 3 × 10⁻⁵C

The distance between these two charges, r = 0.5 m

The magnitude of electric force between the charges  will be:

\(\displaystyle F = 8.99\times 10^{9}\times \frac{4\times 10^{-5}\times 3\times 10^{-5}}{(0.5)^2}\)

F = 43.15 N

Given the charge on one point charge, q₁ =  3 ×10⁻⁵ C

The charge on the other point charge, q₂ = 3 × 10⁻⁵C

The distance between these two charges, r = 1 m

The magnitude of force between the charges will be:

\(\displaystyle F = 8.99\times 10^{9}\times \frac{3\times 10^{-5}\times 3\times 10^{-5}}{(1)^2}\)

F = 8.1 N

Learn more about Coulomb's law, here:

brainly.com/question/506926

#SPJ1

In the given reaction, the limiting reactant is C₆H₆ (benzene).

To determine the limiting reactant as well as calculate the mass of HCl produced, compare the moles of each reactant.

The number of moles for each reactant:

Molar mass of Cl₂ = 35.5 g/mol + 35.5 g/mol = 71 g/mol

Moles of Cl₂ = mass of Cl₂ / molar mass of Cl₂

                     = 45 g / 71 g/mol

                     = 0.634 moles of Cl₂

Molar mass of C₆H₆ (benzene) = 12 g/mol + 6(1 g/mol) = 78 g/mol

Moles of C₆H₆ = mass of C₆H₆ / molar mass of C₆H₆

                        = 45 g / 78 g/mol = 0.577 moles of C₆H₆

Determine the stoichiometry between Cl₂ and HCl:

Cl₂ + C₆H₆ → C₆H₅Cl + HCl

Here, we can see that 1 mole of Cl₂ produces 1 mole of HCl.

Thus, the limiting reactant is C₆H₆ (benzene).

Calculate the mass of HCl produced:

Molar mass of HCl = 1 g/mol + 35.5 g/mol = 36.5 g/mol

Moles of HCl produced = moles of C₆H₆ = 0.577 moles

Mass of HCl produced = moles of HCl produced × molar mass of HCl

Mass of HCl produced = 0.577 moles × 36.5 g/mol

                                     ≈ 21.04 g

Therefore, approximately 21.04 grams of HCl will be produced.

For more details regarding limiting reactant, visit:

https://brainly.com/question/10090573

#SPJ1

Answer:

CH2(CO2H)2 + 2KBrO3 = 2KBr + 3CO2 + 2H20

Explanation:

Left side

C: 1 + 2

H: 2 + 2

K: 2

Br: 2

O: 2 + 6

Right side

C: 3

H: 2 x 2

K: 2

Br: 2

O: 6 + 2

In the given reaction, chlorine (\(Cl_{2}\)) is being reduced.

In the given reaction:

Mg + \(Cl_{2}\)→ \(Mg^2^+\) + 2\(Cl^-\)

The reactants are magnesium (Mg) and chlorine gas ( \(Cl_{2}\)), and the products are magnesium cations (\(Mg^2^+\)) and chloride anions (\(Cl^-\)).

To determine which species is being reduced, we need to compare the oxidation states (or oxidation numbers) of the elements before and after the reaction. The element that undergoes a decrease in oxidation state is being reduced.

In this reaction, the oxidation state of magnesium changes from 0 to +2. Since the oxidation state of magnesium increases, it is undergoing oxidation, not reduction.

On the other hand, the oxidation state of chlorine changes from 0 to -1. The chlorine atoms in  \(Cl_{2}\) have an oxidation state of 0, while in the chloride ions (\(Cl^-\)), the oxidation state is -1. Since the oxidation state of chlorine decreases, it is being reduced.

Therefore, in the given reaction, chlorine ( \(Cl_{2}\)) is being reduced. It gains electrons and undergoes a decrease in oxidation state from 0 to -1.

for more questions on reduced

https://brainly.com/question/14854495

#SPJ8

The enthalpy of combustion for 1kg of urea is -1223525.84 J/mol.

Urea is a compound that is used in fertilizers and in some plastics.The enthalpy of combustion for urea is the amount of energy that is released when urea is burned. In order to calculate the enthalpy of combustion for 1kg of urea, we need to use the information that is provided to us in the question. Let us start by writing down the balanced equation for the combustion of urea: CO(NH2)2 + 3/2 O2 → CO2 + 2H2O + N2
The balanced equation shows that 1 mole of urea reacts with 1.5 moles of oxygen gas to produce 1 mole of carbon dioxide, 2 moles of water, and 1 mole of nitrogen gas. The enthalpy change for this reaction is equal to the amount of energy that is released when 1 mole of urea is burned.
The heat of combustion (ΔHc) of urea is -632.6 kJ/mol. This means that 632.6 kJ of energy is released when 1 mole of urea is burned. We know that 12g of urea raised the temperature of water by 30°C. We can use this information to calculate the amount of energy that was released when 12g of urea was burned.
The specific heat capacity of water is 4.18 J/g°C. This means that it takes 4.18 J of energy to raise the temperature of 1 gram of water by 1°C. Therefore, it takes 4.18 x 1000 = 4180 J of energy to raise the temperature of 1 kg of water by 1°C.
We know that 12g of urea raised the temperature of water by 30°C. Therefore, the amount of energy that was released when 12g of urea was burned is:
Energy = mass x specific heat capacity x temperature change
Energy = 0.012 kg x 4180 J/kg°C x 30°C
Energy = 1497.6 J
We can now use this information to calculate the enthalpy of combustion for 1kg of urea:
Enthalpy of combustion = energy released / moles of urea burned
Enthalpy of combustion = 1497.6 J / (0.012 kg / 60.06 g/mol)
Enthalpy of combustion = - 1223525.84 J/mol
for such more questions on enthalpy
https://brainly.com/question/14047927

#SPJ8

Answer: Hydrogen peroxide is a clear, odorless, and colorless liquid consisting of hydrogen and oxygen. It’s available in dilutions ranging from 3–90%, some of which are sometimes used as an alternative health remedy.

Advocates suggest that drinking a few drops of hydrogen peroxide diluted in water may help treat a range of illnesses, including diabetes and even some forms of cancer.

However, medical professionals warn against the dangers of this practice.

This article takes a look at the latest evidence to determine whether the benefits of drinking hydrogen peroxide outweigh its potential risks.

Explanation:

If you have ingested small amounts of 3% hydrogen peroxide, call your local poison control helpline for assistance. If you have swallowed larger amounts or higher concentrations, seek immediate medical assistance from an emergency room.

The bottom line

Hydrogen peroxide is touted as an alternative health remedy for a range of health conditions.

However, there’s no scientific evidence that drinking it yields any benefits. Plus, doing so is linked to dangerous side effects, including breathing problems, severe gut damage, and in some cases, death.

For these reasons, drinking any concentration or amount of hydrogen peroxide is not recommended.

Answer:

llo

Explanation:

efficent: well orgainzed, completed with mimumin amount of effort

capable is the correct answer accept it surely

The main advantage of the Kelvin scale is that all the temperatures on this scale are positive

The Kelvin scale is a temperature scale that has no negative values.

kelvin scale is a scale of temperature. It was Lord William Thomson Kelvin who discovered Kelvin's scale of temperature.

The melting point of ice on the Kelvin scale is 273 K.

The boiling point of water on the Kelvin scale is 373 K.

The SI unit for measuring temperature is Kelvin which is denoted by the symbol ‘K’.

To learn more about the  Kelvin temperature scale on:

https://brainly.com/question/13290721.

Answer:

D) Water splashing

Explanation:

Displacement is about moving something from its original place.  In A, B, and C nothing is being moved. This makes D the only answer!

Answer:

(9.13)

multiply the mass value by 100

=913 milligrams

Answer:

913 mg

Explanation:

913

The volume of carbon dioxide produced if 8.45 g of propane is burned would be 12.9 L

From the equation of the burning:

\(C_3H_8+ 5O_2 -- > 4H_2O+ 3CO_2\)

The mole ratio of propane burned to carbon dioxide produced is 1:3.

Mole of 8.45 g propane = 8.45/44.1 = 0.19 moles

Equivalent mole of carbon dioxide produced = 0.19 x 3 = 0.57 moles

1 mole of any gas at STP = 22.4 L

0.57 moles of carbon dioxide at STP = 22.4 x 0.57 = 12.9 L

More on molar volume of gases at STP can be found here: https://brainly.com/question/1542685

Conversion factor used to convert volume is 1L = 1000 mL.

15.43L = 15430mL

The same attribute is expressed using a unit conversion but in a different unit of measurement. For instance, time can be expressed in minutes rather than hours, and distance can be expressed in kilometers, feet, or any other measurement unit instead of miles. Measurements are frequently offered in one set of units, like feet, but are required in another set, like chains. A conversion factor is a mathematical equation that facilitates an equal exchange of feet for chains.

A conversion factor is a number that is used to multiply or divide one set of units into another. If a conversion is required, it must be done using the correct conversion factor to get an identical value.

To learn more about the Conversion factors please visit-
https://brainly.com/question/28366871
#SPJ9

Answer:

Yes

Yes

Yes

All yes

Explanation:

Answer:

Melting point

Explanation:

it's constant temperature at which the bonds of a solid Crystal lattice are broken down by overcoming the attractive forces converting it to liquid

Answer:

Water forms more hydrogen bonds than HF

Explanation:

The answer to this question goes back to the idea of hydrogen bonding. Hydrogen bonding occurs when hydrogen is bonded to a highly electronegative atom such as fluorine or oxygen.

However, in HF, there are three lone pairs of electrons on fluorine atom and one hydrogen atom bonded to fluorine.

In H2O, there are two lone pairs of electrons on oxygen atom and two hydrogen atoms bonded to oxygen. This simply means that water can form four hydrogen bonds while HF only forms two hydrogen bonds.

This implies that H2O molecules possess more hydrogen bonding than HF molecules. Hence, the molar enthalpy of vaporization for liquid hydrogen fluoride is lesser than that for water.

The relationship between the rate of diffusion r, and d is r ∝ 1/√d.

The relationship between the rate of diffusion (r) and the density of a gas (d) can be explained using Graham's law of diffusion. According to this law, the rate of diffusion of a gas is inversely proportional to the square root of its density. Mathematically, it can be expressed as:

r ∝ 1/√d

where the symbol '∝' represents 'proportional to'. The constant of proportionality (k) can be introduced to this equation as:

r = k/√d

This equation shows that as the density of a gas increases, its rate of diffusion decreases. This is because denser gases have more molecules per unit volume and thus, they experience greater intermolecular collisions that hinder their movement. Therefore, it requires more energy for them to diffuse through a medium compared to less dense gases.

The relationship between the rate of diffusion and density is particularly important in understanding the behavior of gases in different environments. For instance, in a gas chromatography column, the rate of diffusion of a gas determines how quickly it moves through the column and separates from other components. Similarly, in the Earth's atmosphere, the rate of diffusion of greenhouse gases such as carbon dioxide affects their concentration and hence, their impact on climate change.

For more such questions on diffusion

https://brainly.com/question/29064792

#SPJ11

The calculated formula masses to 133.5 amu, we find that the substance with a formula mass closest to 133.5 amu is (d) AlCl3. Therefore, the answer is option D.

To identify the substance with a formula mass of 133.5 amu, we need to calculate the formula mass of each given substance and compare it to 133.5 amu.

(a) MgCl2:

The formula mass of MgCl2 can be calculated by adding the atomic masses of magnesium (Mg) and chlorine (Cl).

Mg: atomic mass = 24.31 amu

Cl: atomic mass = 35.45 amu

Formula mass of MgCl2 = (24.31 amu) + 2(35.45 amu) = 95.21 amu

(b) SCl:

The formula mass of SCl can be calculated by adding the atomic masses of sulfur (S) and chlorine (Cl).

S: atomic mass = 32.07 amu

Cl: atomic mass = 35.45 amu

Formula mass of SCl = 32.07 amu + 35.45 amu = 67.52 amu

(c) BCl:

The formula mass of BCl can be calculated by adding the atomic mass of boron (B) and chlorine (Cl).

B: atomic mass = 10.81 amu

Cl: atomic mass = 35.45 amu

Formula mass of BCl = 10.81 amu + 35.45 amu = 46.26 amu

(d) AlCl3:

The formula mass of AlCl3 can be calculated by adding the atomic mass of aluminum (Al) and 3 times the atomic mass of chlorine (Cl).

Al: atomic mass = 26.98 amu

Cl: atomic mass = 35.45 amu

Formula mass of AlCl3 = 26.98 amu + 3(35.45 amu) = 133.78 amu. Option D

For more such questions on masses visit:

https://brainly.com/question/24191825

#SPJ8

The What is the molarity of MgCl₂ in the original sample is 1.63 mol/L

\(Molarity = \frac{Mass\ of\ MgCl_2}{molar \ mass\ of MgCl_2} \times\frac{1}{volume \of \ the\ solution \ in\ litres}\)

\(Molarity = \frac{156g}{95.211g/mol} \times\frac{1}{1L}\\\\Molarity = 1.63 \ mol/L\)

Molarity (M) is the amount of a substance in a certain volume of solution. Molar concentration is a measure of the concentration of  chemical compounds, especially a solute in a solution, as the amount of the substance per unit volume of the solution. In chemistry, the most commonly used unit of molarity is the number of moles per litter, indicated in the SI unit  mol/L or mol/dm³.

To learn more about molarity , visit;

https://brainly.com/question/19517011

#SPJ13

Answer:

\(Fe_3PO_4\)

Explanation:

To do this, we find the moles of each element. We get around 0.155 moles of Fe, 0.051 moles of P, and 0.206 moles of O. We then divide each one by the smallest one (which is 0.051 moles of P). We then get 3 for Fe, 1 for P, and 4 for O. This correlates to the empirical formula of the compound.

The empirical formula for the compound is \(Fe_3PO_4\) if a 13.58 g sample of a compound contains 8.67 g of iron, Fe, 1.60 g of phosphorus, P, and oxygen, O.

An empirical formula tells us the relative ratios of different atoms in a compound.

We need to calculate the number of moles:

Given data:

Mass of iron - 8.67 g

Mass of phosphorus -1.60 g

Mass of oxygen -3.31 g

Moles of iron - \(\frac{mass}{molar \;mass}\)

Moles of iron - \(\frac{8.67 g}{56 g/mol}\)

0.15 mole

Moles of phosphorus \(-\frac{mass}{molar \;mass}\)

Moles of phosphorus -  \(\frac{1.60 g}{31 g/mol}\)

0.051 moles

Moles of oxygen -\(\frac{mass}{molar \;mass}\)

Moles of oxygen - \(\frac{3.31 g}{16 g/mol}\)

0.20 moles

Dividing each mole using the smallest number that is divided by 0.051 moles.

Fe:P:O :: 3:1:4

The empirical formula for the compound is \(Fe_3PO_4\).

Learn more about empirical formula here:

brainly.com/question/14044066

#SPJ1

Answer:these remove the nitrate from. The water - plants

These produce waste that contains ammonia- fish

These convert ammonia into nitrate-bacteria

Explanation:

Plants remove the nitrate from the water, fishes produce waste that contains ammonia, and bacteria convert ammonia into nitrate.

An aquaponics system is a sustainable method of agriculture that combines aquaculture with hydroponics. In this system, fish or other aquatic animals are kept in a tank or pond. The fish produce waste in the form of ammonia-rich water.

This wastewater is then circulated to the hydroponic component of the system, where plants are grown in a soil-less medium or directly in water. Beneficial bacteria in the system convert ammonia into nitrites and then nitrates, which are essential nutrients for plants.

Learn more about aquaponics systems, here:

https://brainly.com/question/13885348

#SPJ1

Answer:

Explanation:

The pH of 0.02 M hydrochloric acid is approximately 1.7.

THANKS

IF THE ANSWER IS CORRECT , THEN MARK ME AS BRAINLIST

Answer:

35

Explanation:

the formula is: mass number = protons + neutrons

so 17+18=35

According to the question 32 g of KCI are needed to make the solution saturated at 80 C

Solution saturated is a term used to describe a solution that has reached its maximum solute concentration and can no longer dissolve any more solute. This occurs when the number of solute particles in the solution is equal to the number of solvent molecules. When the solution is saturated, any additional solute added to it will simply form a precipitate or settle out of the solution.

At 80°C, the saturation point of KCl is approximately 132 g/L, so in order to make the solution saturated, you need to add an additional 32 g of KCl. To calculate this, you can use the following equation:
(Saturation concentration at 80°C - Initial concentration at 45°C) x Volume = Additional grams of KCl
(132 g/L - 40 g/L) x 100 mL = 32 g.

To learn more about solution saturated
https://brainly.com/question/530542
#SPJ1

An error during DNA replication would create a gene mutation.

During DNA replication, the genetic information in a cell is copied to make new DNA molecules. However, mistakes can occur during this process, leading to changes in the DNA sequence, which can result in a mutation. Mutations can also be caused by exposure to environmental factors, such as radiation or chemicals, which can damage the DNA molecule directly or affect the cellular processes involved in DNA replication.

Mutations can have a variety of effects on the organism, ranging from no effect to causing serious health problems or even death. Gene mutations can also be inherited from a parent, which can result in genetic disorders or predisposition to certain diseases. Therefore, it is important to understand the mechanisms of gene mutations and their potential impacts on organisms.

To know more about the Gene mutation, here

https://brainly.com/question/15448555

#SPJ1

Answer: \(K_{2}\)O + \(H_{2}\)O --> 2KOH

Explanation: To balance a chemical equation the atoms of an element on product side is equal to reactant side.

The International Union of Pure and Applied Chemistry (IUPAC) provides a standard system for naming organic compounds.

It is essential to learn this nomenclature system to communicate correctly about the chemical structures of compounds and how they relate to each other. Here is the IUPAC name of the following substance.Below is the structure of the given compound: In the given compound, there are four carbon atoms that are connected with single bonds. Carbon atoms are also attached to hydrogen atoms. Since it has four carbons in the main chain, the root name will be "but-". The functional group present in the molecule is the carboxylic acid group (-COOH), which gives the suffix "-oic acid." Therefore, the IUPAC name of the given substance is Butanoic acid.Thus, the IUPAC name of the given compound is Butanoic acid. It is essential to know the IUPAC naming of organic compounds to communicate correctly about the chemical structures of the compounds.

for such more questions on Chemistry

https://brainly.com/question/29886197

#SPJ8