What is the percent by mass of 5 g of iron sulfate dissolved in 75 g of water

By using the ideal gas law and Avogadro's number, we find that there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.

To determine the number of molecules of CO2 in 2.5 L at STP (Standard Temperature and Pressure), we can use the ideal gas law and Avogadro's number.

Avogadro's number (N_A) is a fundamental constant representing the number of particles (atoms, molecules, ions) in one mole of substance. Its value is approximately 6.022 × 10^23 particles/mol.

STP conditions are defined as a temperature of 273.15 K (0 °C) and a pressure of 1 atmosphere (1 atm).

First, we need to convert the volume from liters to moles of CO2. To do this, we use the ideal gas law equation:

PV = nRT,

where P is the pressure, V is the volume, n is the number of moles, R is the ideal gas constant, and T is the temperature in Kelvin.

Since we have STP conditions, we can substitute the values:

(1 atm) × (2.5 L) = n × (0.0821 L·atm/(mol·K)) × (273.15 K).

Simplifying the equation:

2.5 = n × 22.4149.

Solving for n (the number of moles):

n = 2.5 / 22.4149 ≈ 0.1116 moles.

Next, we can calculate the number of molecules using Avogadro's number:

Number of molecules = n × N_A.

Number of molecules = 0.1116 moles × (6.022 × 10^23 particles/mol).

Number of molecules ≈ 6.72 × 10^22 molecules.

Therefore, there are approximately 6.72 × 10^22 molecules of CO2 in 2.5 L at STP.

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Answer:

A lot

Explanation:

BillBill's recipe for onion soup calls for 4.0 lb of thinly sliced onions . if an onion has an average mass of 115 g , how many onions does Bill need ?

The empirical formula of the compound is C₂H₁₆S₂N₃O.

The moles of each element is as follows::

For CO₂:

Carbon (C) has a molar mass of 12.01 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of C in CO₂ = 2.08 g / 12.01 g/mol = 0.173 moles

Moles of O in CO₂ = 2.08 g / 16.00 g/mol = 0.130 moles

For H₂O:

Hydrogen (H) has a molar mass of 1.01 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of H in H₂O = 1.28 g / 1.01 g/mol = 1.27 moles

Moles of O in H₂O = 1.28 g / 16.00 g/mol = 0.080 moles

For SO₃:

Sulfur (S) has a molar mass of 32.06 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of S in SO₃ = 4.77 g / 32.06 g/mol = 0.149 moles

Moles of O in SO₃ = 4.77 g / 16.00 g/mol = 0.298 moles

For HNO₃:

Hydrogen (H) has a molar mass of 1.01 g/mol.

Nitrogen (N) has a molar mass of 14.01 g/mol.

Oxygen (O) has a molar mass of 16.00 g/mol.

Moles of H in HNO₃ = 3.48 g / 1.01 g/mol = 3.45 moles

Moles of N in HNO₃ = 3.48 g / 14.01 g/mol = 0.248 moles

Moles of O in HNO₃ = 3.48 g / 16.00 g/mol = 0.217 moles

The simplest whole-number ratio of the elements will be:

Carbon: 0.173 moles / 0.080 moles ≈ 2.16

Hydrogen: 1.27 moles / 0.080 moles ≈ 15.88

Sulfur: 0.149 moles / 0.080 moles ≈ 1.86

Nitrogen: 0.248 moles / 0.080 moles ≈ 3.10

Oxygen: 0.080 moles / 0.080 moles = 1

Therefore, the empirical formula is C₂H₁₆S₂N₃O.

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Answer:

The answer to your question is given below

Explanation:

The balanced equation for the reaction is given below:

CaO(s) + CH4(g) + 2H2O(g) <=> CaCO3(s) + 4H2(g)

1. Writing an expression for the equilibrium constant, K.

The equilibrium constant, K for a reaction is simply the ratio of the concentration of the products raised to their coefficient to the concentration of the reactants raised to their coefficient.

Thus, we can write the equilibrium constant, K for the reaction as follow:

CaO(s) + CH4(g) + 2H2O(g) <=> CaCO3(s) + 4H2(g)

K = [CaCO3] [H2]⁴ / [CaO] [CH4] [H2O]²

2. Based on the value of K, more products will be in the equilibrium mixture since the value of K is a positive large number.

Carbocation formation is the result of acid-catalyzed dehydration. The stability of carbocations determines the reactivity of this reaction. The carbocation stability order would be as follows:

(Dual bond conjugation)>Tertiary>Secondary>Primary

Increasing the stability of carbocation intermediates is not the only factor that leads to molecular rearrangement. If angle strain , torsional strain or steric crowding in the reactant structure may is relieved by an alkyl or aryl shift to a carbocation site, such a rearrangement is commonly observed.

The following examples illustrate rearrangements induced by the strain in a small ring. Although a 3º-carbocation is initially formed, the angle and torsional strain of the four-membered ring is reduced by a methylene group shift resulting in ring expansion to a 2º-carbocation.

The given question is incomplete. The complete question is:

What is the structure of a rearranged carbocation that does not have a four-membered ring in the following acid-catalyzed dehydration of the following compound?

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Answer:

Hot and rainy conditions

Explanation:

High temperatures and greater rainfall increase the rate of chemical weathering. Rocks in tropical regions exposed to abundant rainfall and hot temperatures weather much faster than similar rocks residing in cold, dry regions. A cold, dry climate will produce the lowest rate of weathering. A warm, wet climate will produce the highest rate of weathering. The warmer a climate is, the more types of vegetation it will have and the greater the rate of biological weathering.

Got these from the internet to help explain. Hope it helps!

Option D - They are negatively charged and located outside the nucleus is the correct alternative.

We have electrons.

We have to determine which of the given statements are true about electrons.

An electron is a negatively charged subatomic particle that can be either bound to an atom or free (not bound).

According to the question -

The role of electrons inside the atom is as follows -

Hence, Option D is the correct alternative.

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Answer:

H⁺(aq) + NO₃⁻(aq) + Na⁺(aq) + OH⁻(aq) → Na⁺(aq) + NO₃⁻(aq) + H₂O(l)

Explanation:

First, we will write the molecular equation for the neutralization reaction between nitric acid and sodium hydroxide.

HNO₃(aq) + NaOH(aq) → NaNO₃(aq) + H₂O(l)

The total ionic equation includes all the ions and the molecular species.

H⁺(aq) + NO₃⁻(aq) + Na⁺(aq) + OH⁻(aq) → Na⁺(aq) + NO₃⁻(aq) + H₂O(l)

The general equation for this reaction is as follows: CO3^2- + 2H+ → CO2 + H2O.

The test for trioxocarbonate (IV), also known as carbonate (CO3) ions, involves the reaction with an acid. When carbonate ions react with an acid, carbon dioxide gas (CO2) is produced, which can be observed through effervescence or bubbling. The general equation for this reaction is as follows:

CO3^2- + 2H+ → CO2 + H2O

In this equation, CO3^2- represents the carbonate ion, and H+ represents the hydrogen ion from the acid. The reaction produces carbon dioxide gas (CO2) and water (H2O).

For example, if hydrochloric acid (HCl) is used in the test, the reaction equation would be:

CO3^2- + 2HCl → CO2 + H2O + 2Cl-

In this case, the carbonate ions react with hydrochloric acid to produce carbon dioxide gas, water, and chloride ions.

It's important to note that the specific acid used in the test may vary depending on the experimental setup. Common acids used include hydrochloric acid (HCl), sulfuric acid (H2SO4), or acetic acid (CH3COOH).

The reaction equation remains the same, with the acid being consumed in the reaction and contributing to the formation of water and an anion corresponding to the acid used (such as chloride, sulfate, or acetate ions).

By observing the effervescence or bubbling produced during the reaction, we can confirm the presence of carbonate ions in the sample being tested.

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Answer:

7.46 g

Explanation:

The mass of KCl needed to prepare a solution can be calculated using the formula:

Mass = Concentration x Volume x Molecular weight

In your case, the mass of KCl needed to prepare a 4.00 L solution of 0.200 M concentration can be calculated as follows:

Mass = 0.200 M x 4.00 L x 74.55 g/mol = 7.46 g.

Therefore, you would need 7.46 g of KCl to prepare a 4.00 L solution of 0.200 M concentration.

The answer is 1ml. The answer is 1ml because of calibration of this graduated cylinder

Answer:

1 mL

Explanation:

According to your definition, it is the difference between marked spaces divided by the # of spaces between marked values.

Difference between 2 marked values: 5 mL

# Of Spaces between marked values: 5

Calibration: 5 mL / 5 mL = 1 mL

Answer:

Luster refers to how light is reflected from the surface of a mineral. The two main types of lustre are metallic and nonmetallic.

Vitreous lustre is one of the most commonly seen, and occurs in transparent or translucent minerals with relatively low refractive indices.

Hope that answers your question

Answer:

i think its diastereomers

Explanation:

bcz its closer to their names

The diastereomers is the term which is best to describe the relationship between D-Mannose and L-Mannose. Thus option e is correct.

Diastereomers are defined as the stereoisomers that are not identical and does not have mirror image, and hence are non superimposable on each other.

Enantiomers and diastereomers  are commonly known as stereoisomers.

Mannose is defined as a sugar monomer of the aldohexose series of carbohydrates the C-2 epimer of glucose. It can also be defined as a simple sugar with complex life.

Thus, the diastereomers is the term which is best to describe the relationship between D-Mannose and L-Mannose. Thus option e is correct.

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Answer:

C.

Explanation:

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give me brainliest

Answer:

B.That Jupiter's gravitational force is much stronger than Earth's gravitational force.

Assuming a similar number of molecules, the matter that occupies the most space is gas. Option C is correct.

This is because gases have no definite shape or volume, and their molecules are spread out, moving freely in all directions. As a result, gases tend to occupy the entire volume of their container and expand to fill the available space. This is known as the "kinetic molecular theory" of gases.

In contrast, solids and liquids have a definite volume and shape. Solids have a fixed shape and their molecules are packed closely together, while liquids have a variable shape and their molecules are less closely packed. As a result, both solids and liquids occupy less space than gases.

It is worth noting that the volume of a solid or liquid can change under certain conditions, such as changes in temperature or pressure. However, even under these conditions, the space occupied by a solid or liquid is still less than that occupied by a gas. Option C is correct.

The complete question is

Which of the following matters occupies more space, assuming similar number of molecules?

A. Solid

B. Liquid

C. Gas

D. Solid and gas

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Answer:

C(s) + O2(g) --> CO2(g)

Explanation:

Answer:

True

Explanation:

Solid carbon and oxygen gas when mixed together reacts, and forms carbon dioxide gas.

The maximum mass of water that could be produced by the chemical reaction is 162 g.

The given chemical equation is: 2 C8H18(l) + 25 O2(g) → 16 CO2(g) + 18 H2O(l)In the chemical reaction of liquid octane with gaseous oxygen, the products are gaseous carbon dioxide and gaseous water.According to the balanced chemical equation, 2 moles of C8H18 react with 25 moles of O2 to form 18 moles of H2O.So, 1 mole of C8H18 react with 25/2 = 12.5 moles of O2 to form 9 moles of H2O.The molar mass of C8H18 is 114 g/mol. So, the number of moles in 17 g of C8H18 is:17 g / 114 g/mol = 0.149 molThe molar mass of O2 is 32 g/mol. So, the number of moles in 112 g of O2 is:112 g / 32 g/mol = 3.5 molFrom the balanced chemical equation, 1 mole of C8H18 react with 12.5 moles of O2 to form 9 moles of H2O.So, the number of moles of O2 required to react with 0.149 mol of C8H18 to form H2O is:(12.5 mol / 1 mol) × (0.149 mol / 2 mol) = 0.935 molThe maximum number of moles of H2O that can be produced from 0.149 mol of C8H18 and 0.935 mol of O2 is 9 mol.So, the mass of water produced from 17 g of C8H18 and 112 g of O2 is:9 mol × 18 g/mol = 162 g

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Answer:

0.1 M Nal

0.1M C2H5NH3Br

0.1M KClO

0.1M NaCN

Explanation:

The strongest acid is the one that has the higher Ka. Now, the weakest conjugate base is the conjugate base of the strongest acid and vice versa:

In the problem, we have only conjugate bases, as the HCN is the weakest acid, the strongest conjugate base is NaCN, then KClO and as last C2H5NH3Br and NaI (The conjugate base of a strong acid, HI).

The strongest base has the higher pH, that means. Thus, the rank in order of increasing pH is:

0.1 M Nal

0.1M C2H5NH3Br

0.1M KClO

0.1M NaCN

An aqueous magnesium chloride solution is made by dissolving 7.40 moles of MgCl₂ in sufficient water so that the final volume of the solution is 4.80 L. the molarity of the MgCl₂ solution is equal to 1.54 M.

Molarity is a unit of concentration, which measures the number of moles of a solute per liter of a solution. To calculate molarity, one divides the amount of solute (in moles) by the total volume of the solution (in liters). In chemistry, molarity is often used to measure concentrations of acids, bases, and other solutes in solutions. This unit of concentration is important in lab work, as it allows scientists and researchers to accurately measure and predict the behavior of solutions.

Molarity (M) = /\(\frac{moles of solute}{liters of solution }\)

Molarity (M) =  \(\frac{7.4mol}{4.8L}\)

Molarity (M) = 1.54 M

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The answer is Structure 1) very broad, centered about 3330 cm-1.; 2) strong, sharp 1717 cm-1 ; 3) broad with spikes at 3367cm-1 and 3392cm-1.; 4) sharp, 2254cm-1; 5) strong, slightly broadened, 1645cm-1.

The structure with their respective characteristics are:

Structure 1: very broad, centered about 3330 cm-1.

Structure 2: strong, sharp 1717 cm-1.

Structure 3: broad with spikes at 3367cm-1 and 3392cm-1.

Structure 4: sharp, 2254cm-1 .

Structure 5: strong, slightly broadened, 1645cm-1.

OH (hydroxide), a chemical compound made up of a single oxygen atom bonded to a single hydrogen atom. It is usually written OH- in aqueous solutions.

O, \(NH_{2}\) and CN are chemical symbols. O is oxygen, NH2 is an amine function and CN is a cyanide function. It is functional group consisting of the nitrogen atom bonded to one or two hydrogen atoms. Cyanide is a functional group consisting of a carbon atom bonded to a nitrogen atom. Both functional groups are very reactive and are also found in many organic compounds.

Full Question:

These five structures all have distinguishing absorption in the IR. Match each structure with its characteristic absorption.

(a) sharp, 2254 cm-1

(b) very broad, centered about 3330cm-1

(c) strong, slightly broadened, 1645cm-1

(d) broad with spikes at 3367cm-1 and 3392cm-1

(e) strong, sharp 1717cm-1

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To balance the given chemical equation using the oxidation state change method, we need to follow these steps:Step 1: Write the unbalanced equationKMnO4 + KCl + H2SO4 → K2SO4 + MnSO4 + Cl2
Step 2: Identify the elements that undergo oxidation and reductionIn this equation, the oxidation state of Mn changes from +7 to +2, which means it undergoes reduction, while the oxidation state of Cl changes from -1 to 0, which means it undergoes oxidation.

Step 3: Write the half-reactionsReduction half-reaction: MnO4^- → Mn^2+Oxidation half-reaction: Cl^- → Cl2Step 4: Balance the atoms and charges in each half-reactionReduction half-reaction: 8H+ + MnO4^- → Mn^2+ + 4H2OOxidation half-reaction: 2Cl^- → Cl2 + 2e^-Step 5: Balance the electrons in each half-reactionReduction half-reaction: 5e^- + 8H+ + MnO4^- → Mn^2+ + 4H2OOxidation half-reaction: 2Cl^- → Cl2 + 2e^-Step 6: Multiply each half-reaction by a factor to equalize the number of electrons transferredReduction half-reaction: 10e^- + 16H+ + 2MnO4^- → 2Mn^2+ + 8H2OOxidation half-reaction: 14Cl^- → 7Cl2 + 14e^-Step 7: Add the balanced half-reactions together10e^- + 16H+ + 2MnO4^- + 14Cl^- → 2Mn^2+ + 8H2O + 7Cl2Step 8: Cancel out the common terms on both sides of the equation2KMnO4 + 16KCl + 8H2SO4 → 2K2SO4 + 2MnSO4 + 7Cl2 + 8H2OTherefore, the balanced equation using the oxidation state change method is:2KMnO4 + 16KCl + 8H2SO4 → 2K2SO4 + 2MnSO4 + 7Cl2 + 8H2O.

Answer:

A.

Explanation:

A wave is a disturbance that moves energy from one place to another. Only energy — not matter — is transferred as a wave moves. The substance that a wave moves through is called the medium. That medium moves back and forth repeatedly, returning to its original position. But the wave travels along the medium

The decomposition of aspirin (acetylsalicylic acid,\(C_{9} H_{8} O_{4}\)) can occur through the hydrolysis reaction, resulting in the formation of acetic acid (\(CH_{3} COOH\)) and salicylic acid (\(C_{7} H_{6}O_{3}\)).

The decomposition of aspirin (acetylsalicylic acid, \(C_{9} H_{8} O_{4}\)) can occur through the hydrolysis reaction, resulting in the formation of acetic acid (\(CH_{3} COOH\)) and salicylic acid (\(C_{7} H_{6}O_{3}\)). To determine the moles of each product formed, we need to consider the balanced chemical equation for the reaction:

\(C_{9} H_{8} O_{4} = > C_{7} H_{6}O_{3} +CH_{3} COOH\)

From the equation, we can see that for every 1 mole of aspirin, 1 mole of salicylic acid and 1 mole of acetic acid are produced.

Therefore, the moles of salicylic acid and acetic acid formed will be equal to the number of moles of aspirin that decomposes. If we know the amount of aspirin in moles, we can directly calculate the moles of each product based on stoichiometry.

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Answer:From this you can see that 5 moles of hydrogen gas would react with 2.5 of the available 3 moles of oxygen gas, to form 5 moles of water.

Explanation:

Answer: 4

Explanation: because the zero doesn't count

The mass of P-32 remaining after 27 days, if the initial mass is 40g is 10.5 g.

The half-life of a radioactive isotope is the amount of time it takes for one-half of the radioactive isotope to decay.

The half-life of a specific radioactive isotope is constant; it is unaffected by conditions and is independent of the initial amount of that isotope.

The number of half lives in 27 days;

n = 27 days/14 days

n = 1.929

The mass of P-32 remaining after 27 days, if the initial mass is 40g;

mass remaining = 40 g / (2^1.929)

mass remaining = 40 g / 3.808

mass remaining = 10.5 g

Thus, the mass of P-32 remaining after 27 days, if the initial mass is 40g is 10.5 g.

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Answer:

this is physics but

5 miles pr hour

Explanation: