1. For the following reaction, 0.295 moles of bromine are mixed with 0.420 moles of chlorine gas.
What is the formula for the limiting reagent? ____________
What is the maximum amount of bromine monochloride that can be produced? _____ moles
2. For the following reaction, 0.595 moles of chlorine gas are mixed with 0.102 moles of water.
What is the formula for the limiting reagent? _________
What is the maximum amount of hydrochloric acid that can be produced? _____moles
3. For the following reaction, 0.316 moles of sulfur dioxide are mixed with 0.116 moles of water.
What is the formula for the limiting reagent? ______________
What is the maximum amount of sulfurous acid () that can be produced? _____ moles

I am currently learning this and I would say Suspensions!

Hope this helps :)

Pathogenic bacteria are the most problematic in the food industry. The term "pathogenic" refers to any bacteria that are capable of causing illness when consumed by humans or animals.

Option A is correct

Pathogenic bacteria are often found in foods that are not cooked or handled correctly. This includes raw meat, unpasteurized dairy products, and foods that are stored at incorrect temperatures for an extended period of time. It is crucial for food industry professionals to follow strict safety protocols to minimize the risk of pathogenic bacteria contaminating their products, leading to foodborne illnesses.Foodborne illnesses can be caused by a variety of microorganisms, including bacteria, viruses, and parasites. Pathogenic bacteria are a significant concern in the food industry, as they can cause serious illness and even death in vulnerable populations such as young children, pregnant women, and the elderly. The most problematic bacteria in the food industry are those that are pathogenic and are capable of multiplying quickly in the food environment. Pathogenic bacteria can cause food poisoning, which is a severe illness that can result in dehydration, fever, vomiting, and diarrhea.

The symptoms can be severe and can lead to hospitalization or even death if left untreated. The most common pathogenic bacteria found in food are Salmonella, Listeria, and E.coli. These bacteria are often found in raw or undercooked meat, unpasteurized dairy products, and fruits and vegetables that are not washed correctly. It is essential for food industry professionals to follow strict safety protocols to prevent the growth and spread of these bacteria. Proper handwashing, storage, and cooking techniques can help minimize the risk of foodborne illnesses caused by pathogenic bacteria. In conclusion, pathogenic bacteria are the most problematic in the food industry. Food safety protocols should be followed to minimize the risk of foodborne illnesses caused by these bacteria.

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Answer:the sun

Explanation:leqjs

Let's look it up

Aluminium:-

Water:-

Alcohol:-

Cooking oil:-

Answer:

1

Explanation:

if 33 the answer would be 92 but u think then 92 32 1

The accuracy of an experiment depends on systematic errors because systematic errors are those that occur consistently and affect the results of the experiment in a predictable way. The precision of an experiment depends on random errors because random errors are those that occur unpredictably and can affect the results of the experiment in an unpredictable way.

Systematic errors can be caused by factors such as faulty equipment, incorrect measurement techniques, or biased sampling methods. If these errors are not addressed, they can lead to inaccurate results. On the other hand, These random errors can be caused by factors such as fluctuations in environmental conditions, human error, or unexpected variations in the experiment. Because random errors are unpredictable, they can affect the precision of the experiment and make it difficult to replicate the results.

Overall, it is important to minimize both systematic and random errors in order to ensure the accuracy and precision of an experiment. This can be done by using accurate and reliable equipment, following proper measurement techniques, and using appropriate sampling methods.

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Answer:

1 Anomalous Pairs. The rest of the  pairs of elements don't follow the follow Mendeleev's Principles . they are :

2Grouping of chemically dissimilar elements.  

3Position of Isotopes.  

4Electronic arrangement.  

5Separation of chemically similar elements.  

6The position of hydrogen.

An aqueous potassium carbonate solution is made by dissolving 6.29 moles of K₂CO₃ in sufficient water so that the final volume of the solution is 4.20L. The molarity of a solution is 1.50M.

Molarity is defined as the moles of solute present in the specific amount or volume of a solution. We calculate the moles of a substance using the formula

moles=(mass/molar mass)

If the volume of a solution is given in ml, then convert it into L.

Molarity is calculated as

Molarity=moles/volume(in L)

Given that moles=6.29, and volume=4.20L

Plug both values in the formula

Molarity=(6.29 mol/4.20 L)

Molarity=1.4976 mol/L

Molarity=1.50 M (∵M=mol/L)

Therefore, the molarity of a K₂CO₃ solution is 1.50M.

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The molecular formula of a compound refers to the actual number of atoms of each element present in a molecule of that compound. The empirical formula, on the other hand, provides the simplest whole-number ratio of atoms in a compound. In this case, the empirical formula of the compound is C3H5O2. To determine the molecular formula, we need to know the molar mass of the compound.

We can calculate the molecular formula by finding the ratio of the molar mass of the compound to the molar mass of the empirical formula. The molar mass of the empirical formula C3H5O2 is:

(3 x 12.01 g/mol for C) + (5 x 1.01 g/mol for H) + (2 x 16.00 g/mol for O) = 73.08 g/mol

To find the molecular formula, we divide the molar mass of the compound (146 g/mol) by the molar mass of the empirical formula (73.08 g/mol):

146 g/mol ÷ 73.08 g/mol = 2

This tells us that the compound has two times the number of atoms in the empirical formula. Therefore, the molecular formula of the compound is:

(C3H5O2)2 = C6H10O4

So, the molecular formula of the compound with a molar mass of 146 g/mol and an empirical formula of C3H5O2 is C6H10O4.

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The sample that contained 4.66 x 10³⁰ grams has 2.26 x 10³⁰ atoms of silicon. In order to find out the number of atoms of silicon that would be present in a sample containing 4.66 x 10³⁰ grams, we need to use Avogadro's number, which is the number of atoms in one mole of an element. One mole of an element is equal to its atomic mass in grams.

The atomic mass of silicon is 28.086 g/mol. We can use this information to calculate the number of moles of silicon in the sample as follows:4.66 x 10³⁰ g ÷ 28.086 g/mol = 1.66 x 10³⁰ mol Next, we can use Avogadro's number, which is 6.022 x 10²³ atoms/mol, to convert the number of moles to the number of atoms:1.66 x 10³⁰ mol x 6.022 x 10²³ atoms/mol = 9.99 x 10⁵³ atoms Therefore, there are 9.99 x 10⁵³ atoms of silicon in the sample containing 4.66 x 10³⁰ grams.

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1. The empirical formula of the compound is NaOCl.

2. The compound with an empirical formula of CH has a molecular formula of \(C_ 6H_6.\) Option C

1. To determine the empirical formula of the compound, we need to find the simplest ratio of the elements present in the compound. We can assume a 100 g sample of the compound to make calculations easier.

Given that the compound is 25.42% Na, 35.40% O, and 39.18% Cl by mass, we can calculate the number of moles of each element in the 100 g sample:

Na: (25.42 g / 22.99 g/mol) = 1.106 mol

O: (35.40 g / 16.00 g/mol) = 2.213 mol

Cl: (39.18 g / 35.45 g/mol) = 1.104 mol

To find the simplest whole-number ratio, we divide the number of moles of each element by the smallest number of moles:

Na: 1.106 mol / 1.104 mol ≈ 1

O: 2.213 mol / 1.104 mol ≈ 2

Cl: 1.104 mol / 1.104 mol = 1

The empirical formula of the compound is NaOCl.

2. The empirical formula of CH implies a molar mass of approximately 13.01 g/mol (12.01 g/mol for carbon + 1.01 g/mol for hydrogen).

Given that the compound has a molar mass of 78.11 g/mol, we can find the ratio between the molar mass of the compound and the molar mass of the empirical formula:

78.11 g/mol / 13.01 g/mol ≈ 6

This means that the molecular formula of the compound is a multiple of the empirical formula. Therefore, the compound's molecular formula can be determined by multiplying the empirical formula by 6:\(C_ 6H_6.\). Option C

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The percent abundance of each nail sample would 61.5 and 38.5% respectively.

The percent abundance of a component of a sample is the ratio of the amount of the component and the total amount of the sample itself.

The percent abundance can be mathematically expressed as:

Percent component in a sample = amount of component/amount of total sample x 100

In this case, the total number of nails can be calculated as:

            123 + 77 = 200 nails.

Percent of 4d nails = 123/200 x 100 = 61.5%

Percent of 14d nails = 77/200 x 100 = 38.5%

This means that the percent component of each of the nail sizes in the sample is 61.5 and 38.5% respectively.

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Answer:

C₂H6

Explanation:

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). Option A

A hydrocarbon is a compound that consists of only carbon and hydrogen atoms. It is important to identify the formula that represents a hydrocarbon among the given options:

A) C₂H6: This formula represents ethane, which is a hydrocarbon. Ethane consists of two carbon atoms bonded together with single bonds and six hydrogen atoms.

B) C₂H5OH: This formula represents ethanol, which is not a hydrocarbon. Ethanol contains a hydroxyl group (-OH), indicating the presence of oxygen in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

C) C₂H5Cl: This formula represents ethyl chloride, which is not a hydrocarbon. Ethyl chloride contains a chlorine atom (Cl) in addition to carbon and hydrogen atoms. It is a haloalkane, not a hydrocarbon.

D) C₂H6O: This formula represents ethanol, which, as mentioned before, is not a hydrocarbon. Ethanol contains an oxygen atom (O) in addition to carbon and hydrogen atoms. It is an alcohol, not a hydrocarbon.

Among the given options, the formula A) C₂H6 represents a hydrocarbon (specifically, ethane). It consists only of carbon and hydrogen atoms, making it a suitable representation of a hydrocarbon.

In summary, the formula C₂H6 (option A) represents a hydrocarbon, while the other options contain additional elements (oxygen or chlorine) that make them non-hydrocarbon compounds. Option A

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The potential difference required to stop the electron is approximately -7,118.75 V. The negative sign indicates that the electron is moving in the opposite direction of the electric field.

Potential difference, also known as voltage, is a measure of the electric potential energy difference between two points in an electrical circuit. It represents the work done per unit charge to move a charge from one point to another in an electric field.

In simpler terms, potential difference is the driving force that allows electric charges to flow in a circuit. It is measured in volts (V) and is represented by the symbol "V".

A potential difference exists when there is a difference in electric potential between two points, causing electric charges to move from a higher potential to a lower potential.

Given:

Mass of the electron (m) = 9.11 x 10⁻³¹ kg

Initial speed of the electron (v) = 500,000 m/s

Charge of the electron (e) = -1.6 x 10⁻¹⁹ C

KE = (1/2) × m × v²

= (1/2) × (9.11 x 10⁻³¹ kg) × (500,000 m/s)²

= 1.139 x 10⁻¹⁵ J

The work done by the electric field is equal to the change in kinetic energy:

W = KE = 1.139 x 10⁻¹⁵ J

V = W / q

= (1.139 x 10⁻¹⁵ J) / (-1.6 x 10⁻¹⁹ C)

= -7.11875 x 10³ V

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An electron with an initial speed of 500,000 m/s is brought to rest by an electric field. The potential difference that stopped electron is 71.25 volts.

An electric field is a field of force that surrounds an electric charge or group of charges. The electric field is a vector field, meaning it has both magnitude and direction.

When an electron is brought to rest by an electric field, the electric potential energy is converted into kinetic energy and then dissipated as heat. The potential difference required to stop an electron can be calculated using the following equation:

∆V = KE/e

where KE is the kinetic energy of the electron, e is the charge of the electron, and ∆V is the potential difference required to stop the electron.

The kinetic energy of the electron can be calculated using the following equation:

KE = (1/2) \(\rm mv^2\)

where m is the mass of the electron, v is the initial velocity of the electron, and KE is the kinetic energy of the electron.

Substituting the given values into the above equations, we get:

KE = (1/2)\(\rm mv^2\)

= (1/2) \((9.11 \times 10^{-31}\ { kg} \ )\) ( \(500,000\) \(\rm m/s)^2\) = \(\rm 1.14 \times 10^{-17}\ { J}\)

∆V = KE/e

= \(\rm (1.14 \times 10^{-17} J)/(-1.6 \times 10^{-19}\ C) = -71.25\ { V }\)

Therefore, the potential difference required to stop the electron is 71.25 volts.

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Explanation:

6 CO2 + 12 H2O ---->C6H12O6 + 6 O2+ 6 H2O

13.5 moles of hematite reacting with 28.5 moles of carbon monoxide will produce approximately 1505.415 grams of iron.

To determine the grams of iron produced, we need to use the given balanced chemical equation and the stoichiometry of the reaction.

From the balanced equation:

1 mole of Fe₂O₃ reacts with 3 moles of CO to produce 2 moles of Fe.

Given:

Moles of Fe₂O₃ = 13.5 moles

Moles of CO = 28.5 moles

Using the stoichiometry of the reaction, we can calculate the moles of Fe produced:

Moles of Fe = (Moles of Fe₂O₃) × (2 moles of Fe / 1 mole of Fe₂O₃)

Moles of Fe = 13.5 moles × (2 moles / 1 mole)

Moles of Fe = 27 moles

Now, we can calculate the molar mass of iron (Fe) to convert moles of Fe to grams of Fe:

Molar mass of Fe = 55.845 g/mol

Grams of Fe = (Moles of Fe) × (Molar mass of Fe)

Grams of Fe = 27 moles × 55.845 g/mol

Grams of Fe = 1505.415 g

Therefore, 13.5 moles of hematite reacting with 28.5 moles of carbon monoxide will produce approximately 1505.415 grams of iron.

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Answer:

The relative atomic mass of the metal is  207.2 u

Explanation:

Metal chromate

Given that;

1) The mass of fluorine is 14.96% of the metal fluoride

2) 2 Chromium are connected to the metal when the metal chromate, CrO²⁻, is formed

We have;

Number of ions available in the metal =  Cr₂O₇²⁻ = +2 ionic

Molar mass of fluorine = 18.998 g/mole

Ionization of fluorine = -1

Number of moles of fluorine required per metal +2 ion= 2 moles

3) Number of moles of fluorine per mole of compound of the metal fluoride = 2 × moles

Mass of fluorine per mole of compound = 2 × 18.998 = 37.996 grams

Percentage by mass of fluorine = 14.96%

Fluoride

Let the mass of the compound = X

Therefore;

14.96% of X = 37.996 grams

X = 37.996/(0.1496) = 253.984 grams

Therefore the mass of the metal in the compound = 253.984 - 37.996 = Molar mass 215.99 grams

Given that the metal forms a chromate with 2 chromium atoms and a mass of 215.99 grams, the likely candidate is lead, Pb with a molar mass of 207.2 grams and a chromate of Pb(CrO₄)₂.

The fluoride, lead fluoride, F₂

The relative atomic mass of lead is 207.2 u

Answer: A Meteor

Explanation:

A streak of light in the sky and says she is seeing a shooting star. She's most likely observing is a meteor. Therefore, option C is correct.

A meteor is an object from space or a meteoroid that touches down on Earth. The air on the space rock creates drag that causes it to become incredibly heated as it falls toward Earth.

When the earth travels through cometary debris during its orbit around the Sun, meteor showers will result. Although the Earth's orbit around the Sun is nearly round, the majority of comets have very elliptical orbits.

A meteoroid becomes a meteor, or a streak of light in the sky, if it gets close enough to Earth and enters its atmosphere. These light striations are sometimes referred to as "shooting stars" due to their appearance. However, stars are not what meteors are.

Thus, option C is correct.

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Answer:

electrical and mechanical engineering

Answer:

electrical engineering

Explanation: i took quiz

Answer:

- Amount of energy = -1066.92 J

- Yes, a phase change occurs from gaseous state to liquid state

- It is exothermic

Explanation:

Using Q = m × c × ∆T

Where Q = amount of energy

m = mass = 17g

c = specific heat capacity of water (4.184J/g°C)

∆T = change in temperature (87°C - 102°C = -15°C)

Hence, Q = m × c × ∆T

Q = 17 × 4.184 × (-15°C)

Q = -1066.92 J

- According to this question, vapor condenses i.e. gaseous form of water changes to liquid water, which involves a reduction in temperature. Hence, a change of phase occurs from gaseous state to liquid state.

- Since the change of phase occurs from a less orderly state (gas) to a more orderly state (liquid), there is a release of energy i.e. EXOTHERMIC. The amount of energy or Enthalpy change (∆H) is negative

Answer: C. Gaining 5 electrons

Explanation: Aluminium has 3 valence electrons to have a full outer shell it would need 5 to become an octet (8).

For Sample A and B, density is \(2g/cm^3\) and \(4g/cm^3\), respectively. the density of Sample A is lower than B. Since oceanic crust is generally denser than continental crust, we can conclude that Sample B likely came from oceanic crust.

The mass of a substance per unit volume is referred to as its density. We divide the sample's mass by its volume to determine the density of each crust sample.

Sample A's mass and volume are indicated as 44g and \(22cm^3\), respectively. We obtain the density (\(2g/cm^3\)) by dividing the mass (44g) by the volume (\(22cm^3\)), density = \(\frac{44}{22} = 2g/cm^3\)

Sample B is described as having a mass of 32g and a volume of \(8cm^3\). We obtain the density (\(4g/cm^3\)) by dividing the mass (32g) by the volume (\(8cm^3\)). \(\frac{32}{8} = 4g/cm^3\)

The two samples have different densities, with Sample A having a lower density (\(2g/cm^3\)) than Sample B (\(4g/cm^3\)).

We can infer that Sample B most likely originated from oceanic crust while Sample A most likely originated from continental crust because oceanic crust is typically denser than continental crust.

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For a given reaction, the rate constant triples when the temperature is increased from 32C to 71C. The activation energy for the reaction is 70.2 kJ/mol.

The Arrhenius equation relates the rate constant (k) of a chemical reaction to the temperature (T), the activation energy (Ea), and the gas constant (R):

\(k = Ae^{(-Ea/RT)}\)

where,

A is the pre-exponential factor (also known as the frequency factor).

We can use the given information to set up a ratio of rate constants at two different temperatures:

\(\frac{k_2}{k_1} = exp \left [(Ea/R) \times \left (\frac{1}{T_1} - \frac{1}{T_2} \right ) \right ]\)

where

k₁ is the rate constant at the lower temperature (32°C or 305 K) and

k₂ is the rate constant at the higher temperature (71°C or 344 K).

We know that the rate constant triples, so:

k₂ = 3k₁

Substituting this into the equation above and solving for Ea, we get:

\(\frac{3k_1}{k_1} = exp \left [(Ea/R) \times \left (\frac{1}{305\ K} - \frac{1}{344\ K} \right ) \right]\)

\(3 = exp \left [(\left \frac{Ea}{8.314\ J/K Mol} \right ) \times (0.00328 K^{-1}) \right ]\)

Taking the natural logarithm (ln) of both sides, we get:

\(\ln(3) = \left (\frac{Ea}{8.314\ J/K Mol} \right) \times (0.00328 K^{-1})\)

Solving for Ea, we get:

Ea = -ln(3) × 8.314 J/K Mol / 0.00328 K⁻¹

Ea = 70200 J/mol

Therefore, the activation energy for the reaction is 70.2 kJ/mol.

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Answer:

1: each hydrogen atom shares an electron to form a covalent bond

Explanation:

I took the quiz and this was correct!

The intermolecular forces are in the solid NaCl salt is ion - ion forces or the dipole - dipole forces of the interaction.

The Na is the metal and is capable of the donating the electrons and the Cl is the non metal and have capability of accepting the electrons. This makes the Na to form the cation and the Cl to make the anion. The dipole - dipole forces are present in the molecule which contains the oppositely charged ions one is positively charged ion and the other is the negatively charged ion.

Thus , the NaCl solid has the ion - ion intermolecular forces of the interaction .

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Answer:

Through oxidation of food materials

Explanation:

When living organisms eat, they ingest complex organic food materials. As these food materials enter the body, the process of digestion begins.

Enzymes in the body, located at different parts of the gastrointestinal tract see to the breakdown of these complex food materials ingested. The oxidation of these complex food materials lead to the release of the chemical potential energy stored in them.

Bases are the chemical opposite of acids. Acids are defined as compounds that donate a hydrogen ion (H+) to another compound.

Definition of Acids - An acid is any chemical compound which when dissolved in water gives a solution with a hydrogen ion activity greater than in pure water. Bronstead Lowry

Definition of Base - A base is an aqueous substance that can accept hydrogen ions. Bronstead Lowry Definition: A base is any substance which accepts a proton.

Physical Characteristics of Acids - Depending on the temperature, acids can occur in solid, liquid or gaseous form. Taste sour.

Physical Characteristics of Base - Bases feel slippery because of the reaction of the base with the oils of your hand. Frequently solids except ammonia which is a gas. Taste bitter.

Properties of Acids - Electrolytes, conduct electricity (because electrolytes), react with many metals.

Properties of Base - Electrolytes, conduct electricity, ranges from insoluble to so soluble that they can react with water vapor.

Acids are often used to remove rust from metals, as an electrolyte in batteries, for mineral processing, to produce fertilizers and gasoline and as additives in food and beverages. Bases are used primarily in cleaning as dishwashing and laundry detergents, oven cleaners and stain removers.

Here are some differences! Hope this helps, sorry I couldn't think of anything else. ;(

The mass of ethanol present in the vapor is 8.8×10⁻²g. when liquid and vapor ethanol at equilibrium.

The volume of the bottle = 4.7 L

Mass of ethanol = 0.33 g

Temperature (T1) = -11 oC = 273-11 = 262 K

P1 = 6.65 torr

Now we will calculate the mole by applying the ideal gas equation:-

PV = nRT

Or, n = PV/RT

Where P is the pressure

 T is the temperature

 R is the gas constant = 0.0821 L atm mol-1K-1

 V is the volume

Substituting the values of P, V, T, and R the mole of ethanol is calculated as:-

  = 0.001913 mol C2H6

Conversion of the mole to gm

Molar mass of ethanol (M) = 46.07 g/mol

Mass of C2H6O =0.001913 mol C2H6O 46.07 g/mol = 0.088 =  8.8×10⁻²g.

Hence, the mass of ethanol present in the vapor is found to be  8.8×10⁻²g.

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Answer:

Chromosomes are structures within cells that contain a person's genes.

Explanation:

Genes are segments of deoxyribonucleic acid (DNA) that contain the code for a specific protein that functions in one or more types of cells in the body. Chromosomes are structures within cells that contain a person's genes. Genes are contained in chromosomes, which are in the cell nucleus.

Answer:

See explanation

Explanation:

The cold drink chiller is a cold substance which is inserted into a bottle of drink which contains warm liquid particles at a particular temperature.

Once the drink chiller is inserted, the liquid molecules around the drink chiller become cooler, denser and sink away from the drink chiller. Other warmer, less dense molecules of the liquid drink now replaces them around the drink chiller.

A convection current is thus set up for as long as the drink chiller is working.