PLEAZE HELP!!!
Calculate the volume of a liquid with a density of 5.35 g/mL and a mass of 62.0 g.
Answer to the proper significant figures and include the proper unit.

My answer was 11.6 mL, but it was wrong.

Answer:

5.12 atm

Explanation:

Before you can use the Ideal Gas Law to find the pressure, you need to convert grams to moles (via molar mass).

Molar Mass (H₂): 2(1.008 g/mol)

Molar Mass (H₂): 2.016 g/mol

 1.8 grams H₂               1 mole
----------------------  x  ----------------------  =  0.893 moles H₂
                                 2.016 grams

The Ideal Gas Law equation looks like this:

PV = nRT

In this equation,

-----> P = pressure (atm)

-----> V = volume (L)

-----> n = moles

-----> R = Ideal Gas Constant (0.0821 L*atm/mol*K)

-----> T = temperature (K)

After converting Celsius to Kelvin, you can plug the given values into the equation and simplify to find the pressure.

P = ? atm                                R = 0.0821 L*atm/mol*K

V = 4.3 L                                T = 27 °C + 273.15 = 300.15 K

n = 0.893 moles

PV = nRT

P(4.3 L) = (0.893 moles)(0.0821 L*atm/mol*K)(300.15 K)

P(4.3 L) = 22.0021

P = 5.12 atm

**Based on my past experiences, I believe the constant (R) you provided may have been mistyped. Instead of 0.821, I used 0.0821.**

You can approach and solve a wide range of problems in a systematic manner.

General step-by-step approach that can be applied to various problems.

By following these steps, you can approach and solve a wide range of problems in a systematic manner.

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Answer:

Hydrochloric acid (HCl) acts as an acid, and iron filings (Fe) act as a metal. Acid reacts with the metal to produce iron chloride (FeCl2) and hydrogen gas (H2) as products.

Explanation:

When dilute hydrochloric acid (HCl) is added to iron filings (Fe), a chemical reaction takes place. The reaction can be represented by the following equation:

Fe + 2HCl → FeCl2 + H2

In this reaction, the hydrochloric acid (HCl) acts as an acid, and the iron filings (Fe) act as a metal. The acid reacts with the metal to produce iron chloride (FeCl2) and hydrogen gas (H2) as products.

The iron filings react with the hydrochloric acid to form iron chloride. Iron chloride is soluble in water and dissociates into Fe2+ ions and Cl- ions. The release of hydrogen gas is observed as effervescence or bubbling.

The reaction between hydrochloric acid and iron filings is an example of a single displacement reaction, where the more reactive metal (iron) displaces the less reactive hydrogen from the acid. This type of reaction is often referred to as a metal-acid reaction.

It's important to note that this reaction is highly exothermic, meaning it releases heat. Therefore, if a large amount of acid is added to a large quantity of iron filings, the reaction can become vigorous and potentially dangerous, leading to the release of significant amounts of hydrogen gas. It is recommended to carry out such reactions under controlled conditions and with appropriate safety precautions.

Answer:

Iron chloride.

Concepts in the given question:

Iron filings undergo a chemical reaction that results in the production of hydrogen gas and iron chloride when diluted hydrochloric acid is introduced. According to the following equation, the iron filings and hydrochloric acid react to produce ferrous chloride and hydrogen gas:

Fe(s) + 2HCl(aq) → FeCl2(aq) + H2(g)

The reactants in this reaction are iron filings (Fe), and the reagent is hydrochloric acid (HCl). Iron interacts with acid to produce iron chloride (FeCl2) and hydrogen gas (H2) when the two are mixed. While the hydrogen gas is discharged as a gas, the iron chloride dissolves in the acid and creates a solution. Exothermic, or releasing heat, the reaction happens rather fast, especially if the iron filings are broken up into little bits or have a wide surface area.

Hydrochloric acid can react with several metals to produce hydrogen gas and a metal chloride. However, not all metals will react with hydrochloric acid.

Metals that are more reactive than hydrogen, such as sodium (Na), potassium (K), calcium (Ca), and magnesium (Mg), will react with hydrochloric acid to produce hydrogen gas and a metal chloride. For example:

2Na(s) + 2HCl(aq) → 2NaCl(aq) + H2(g)

Mg(s) + 2HCl(aq) → MgCl2(aq) + H2(g)

However, metals that are less reactive than hydrogen, such as copper (Cu), silver (Ag), and gold (Au), will not react with hydrochloric acid.

It is worth noting that the rate and extent of the reaction can vary depending on the concentration and temperature of the acid and the type of metal being used.

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Answer- im pretty sure it's 2

Answer:

Object B has more density.

Explanation:

You have to use D=M/V to find the density. It is denser by 0.4167g.

Answer:

Water molecules pull the sodium and chloride ions apart

Explanation:

Answer:

increase atomic number

they all have numbers on the top that continues

6.73 L

This one requires the combined gas law.

P1V1/T1 = P2V2/T2

P1 = 150 kPa = 1.48 atm

V1 = 5 L

T1 = 300 K

P2 = 1 atm

V2 = This is what we’re solving for.

T2 = 273 K

P2 and T2 are based on the conditions of STP. I also changed P1 to atm to keep the units consistent.

Solve the equation for V2:

V2 = P1V1T2 / T1P2

V2 = (1.48 atm)(5 L)(273 K) / (300 K)(1 atm) = 6.73 L

Answer:

Answer:

i think the answer is c

Explanation:

sorry if im wrong i am most likely wrong but ye

The chemical composition of the interstellar medium, astronomers use spectroscopy, which involves studying the light emitted, absorbed, or scattered by materials in space. This technique helps identify various chemical elements and compounds present in the interstellar medium by analyzing their unique spectral signatures.

The composition of the interstellar medium is studied through various methods, including spectroscopy. Scientists use telescopes to observe the light emitted or absorbed by the interstellar medium and analyze its spectrum to determine the chemical elements present. Spectroscopy provides valuable information on the chemical composition of the interstellar medium and can also help identify molecules that may be present. Another method used to study the chemical composition of the interstellar medium is by analyzing the light from stars that are behind the interstellar medium. The light is absorbed by the interstellar medium and provides information about the elements present. Overall, the chemical composition of the interstellar medium can be determined through a combination of observation and analysis using various scientific techniques.

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Answer:

1.39

Explanation:

1060 mm   /  760 mm/atm = 1.39   atm

Answer:

Explanation:

arranged in order of increasing.

The original pressure of a gas that has 5.00 L of its sample expanded to 15.0 L, at which point the pressure is measured to be 0.720 atm is 2.16atm.

The pressure of a gas can be calculated using the Boyle's law equation as follows:

P1V1 = P2V2

Where;

P1 × 5 = 15 × 0.720

5P1 = 10.8

P1 = 10.8 ÷ 5

P1 = 2.16atm

Therefore, the original pressure of a gas that has 5.00 L of its sample expanded to 15.0 L, at which point the pressure is measured to be 0.720 atm is 2.16atm.

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Answer:

It represents a decomposition reaction because one reactant breaks apart and forms two products

Explanation:

Your welcome

To solve such this we must know the concept of redox reaction. Therefore, the correct option is option C. It represents a decomposition reaction because one reactant breaks apart and forms two products.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

Decomposition reaction is a chemical reaction where one reactant breaks down into two or more than two products on supplying energy in form of heat or electricity.

Therefore, the correct option is option C. It represents a decomposition reaction because one reactant breaks apart and forms two products.

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The best method to separate a 1:1 mixture of aniline and ethylbenzene would be the fractional distillation method.

What is fractional distillation?

Fractional distillation is a separation technique that is used to separate two or more liquids whose boiling points are very close to each other. It is a technique that separates the mixture of liquids by heating them to a temperature such that one of the components of the mixture boils and turns into a vapor state while the other component remains in a liquid state, and then both the vapor and the liquid state components are collected separately by condensing the vapor.The boiling point of aniline is 184°C, and the boiling point of ethylbenzene is 136°C. The difference in the boiling points of both these liquids is 48°C, which means that the fractional distillation technique can be used to separate a 1:1 mixture of aniline and ethylbenzene.

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The elements Na, Li, K, Rb, and Cs in order of increasing ionization energy is Li, Na, K, Rb, Cs. The correct answer is option D.

What is ionization energy?

The ionization energy is the minimum energy which is required to remove a valence electron from an isolated gaseous atom, molecule or a positive ion. This measures the ability of an atom to form an ion by losing an electron to take part in a chemical reaction.

As we move down the group, the ionization energy decreases due to the increase in the atomic size of an element. So, the electrons are far from the nucleus and loosely bound to the nucleus.

Therefore, it is easy to remove an electron from the elements which are found lower in the group. So, the order of increasing ionization energy is Li, Na, K, Rb, Cs, the correct answer is option D.

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That the calculated molar mass of the gas is closest to the molar mass of N2O. Therefore, the gas is most likely N2O.

What is Density?

Density is a physical property of matter that describes how much mass is contained in a given volume. It is defined as the amount of mass per unit volume, and is typically expressed in units of grams per cubic centimeter (g/cm3) or kilograms per cubic meter (kg/m3).

The gas density and the conditions provided can be used to calculate the molar mass of the gas using the ideal gas law:

PV = nRT

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

Rearranging this equation to solve for n/V, we get:

n/V = P/RT

M = m/n

where M is the molar mass, m is the mass of the gas, and n is the number of moles.

Since the density is given in grams per liter, we can assume that 1 liter of the gas has a mass of 1.96 grams. Therefore, the number of moles of the gas in 1 liter can be calculated as:

n/V = P/RT = (1 atm)/(0.08206 L·atm/mol·K × 273 K) = 0.0446 mol/L

The number of grams of the gas in 1 liter can be calculated as:

m = density × volume = 1.96 g/L × 1 L = 1.96 g

Therefore, the molar mass of the gas is:

M = m/n = 1.96 g / 0.0446 mol = 43.9 g/mol

Comparing this molar mass to the molar masses of the possible nitrogen oxides:

NO has a molar mass of 30.01 g/mol

N2O4 has a molar mass of 92.01 g/mol

N2O has a molar mass of 44.01 g/mol

We can see that the calculated molar mass of the gas is closest to the molar mass of N2O. Therefore, the gas is most likely N2O.

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The pH of a 0.046 M HClO₄ solution is (c) 1.34.

HClO₄, or perchloric acid, is a strong acid that dissociates completely in water. Given a 0.046 M solution of HClO₄, we can calculate its pH using the formula:

pH = -log₁₀[H⁺]

Since HClO₄ dissociates completely, the concentration of hydrogen ions [H⁺] in the solution will be equal to the concentration of the HClO₄, which is 0.046 M. Plugging this value into the formula:

pH = -log₁₀(0.046)

Calculating the logarithm gives us:

pH ≈ 1.34

Therefore, the pH of a 0.046 M HClO₄ solution is approximately 1.34. The correct answer is option (c).

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The molarity of the acid solution is 0.632 M.

To determine the molarity of the acid solution, we can use the concept of stoichiometry and the balanced chemical equation for the neutralization reaction between sodium hydroxide (NaOH) and sulfuric acid (H2SO4):

2 NaOH + H2SO4 -> Na2SO4 + 2 H2O

From the balanced equation, we can see that 2 moles of NaOH react with 1 mole of H2SO4.

Given:

Volume of NaOH solution = 17.28 ml

Molarity of NaOH solution = 0.4588 M

Volume of H2SO4 solution = 23.99 ml

Using the equation:

Molarity of NaOH x Volume of NaOH = Molarity of H2SO4 x Volume of H2SO4

0.4588 M x 17.28 ml = Molarity of H2SO4 x 23.99 ml

Solving for the molarity of H2SO4:

Molarity of H2SO4 = (0.4588 M x 17.28 ml) / 23.99 ml

Molarity of H2SO4 = 0.3296 M

Therefore, the molarity of the acid solution (H2SO4) is 0.3296 M.

The molarity of the acid solution is 0.3296 M, based on the volume of NaOH solution and the volume of H2SO4 solution used in the neutralization reaction.

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An elimination reaction can have two products major and minor which are shown in the attached diagram below.

An elimination reaction can be described as a type of organic reaction in which two substituents are eliminated from a molecule in either a one- or two-step mechanism.

The one-step mechanism is called the E₂ reaction, and the two-step mechanism is called the E₁ reaction. The kinetics of the reaction: E₂ is bimolecular or second-order while E₁ is a unimolecular or first-order reaction.

In cases where the molecule is capable to stabilize an anion but has a poor leaving group, a third type of reaction, E₁-CB.

The E₂ mechanism involves a one-step mechanism in which carbon-hydrogen and carbon-halogen bonds break to prepare a double bond.

E₁ stands for unimolecular elimination where the carbon-halogen bond breaks to give a carbocation intermediate and then deprotonation of the carbocation.

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Answer: balance, posture, & coordination

Explanation:

Answer:

The charge of a Strontium atom that has 10 electrons is 4.48 × 10⁻¹⁸ C

Explanation:

The atomic number of Strontium is 38

The electronic configuration of Strontium is given as follows;

1s²2s²2p⁶3s²3p⁶3d¹⁰4s²4p⁶5s²

The atomic number of Strontium is 38 electrons in orbit and 38 protons in its nucleus and is electronically neutral

38e⁻ + 38e⁺ = 0

When there are only 10 electrons in an atom of Strontium, we have;

10e⁻ + 38e⁺ = +28e

The charge of a Strontium atom that has 10 electrons is +28e

+28e = 28×1.6×10⁻¹⁹ C = 4.48 × 10⁻¹⁸ C

The charge of a Strontium atom that has 10 electrons is +28e or 4.48 × 10⁻¹⁸ C.

The theoretical yield of 2,3-dibromo-3-phenylpropanoic acid, assuming that the trans-cinnamic acid is the limiting reagent is 1.24 g.

To calculate the theoretical yield of 2,3-dibromo-3-phenylpropanoic acid, we first need to write the balanced chemical equation:

Trans-cinnamic acid + Br2 + HNO3 → 2,3-dibromo-3-phenylpropanoic acid + H2O + NO2

From the equation, we can see that one mole of trans-cinnamic acid reacts with one mole of Br2 and one mole of HNO3 to produce one mole of 2,3-dibromo-3-phenylpropanoic acid.

The molar mass of trans-cinnamic acid is 148.16 g/mol, and we have 0.0034 mol of it. Therefore, the mass of trans-cinnamic acid is:

0.0034 mol x 148.16 g/mol = 0.503 g

Since the trans-cinnamic acid is the limiting reagent, all of it will be consumed in the reaction, and we can use its amount to calculate the theoretical yield of 2,3-dibromo-3-phenylpropanoic acid.

The molar mass of 2,3-dibromo-3-phenylpropanoic acid is 365.99 g/mol, and from the balanced equation, we can see that one mole of it is produced from one mole of trans-cinnamic acid. Therefore, the theoretical yield of 2,3-dibromo-3-phenylpropanoic acid is:

0.0034 mol x 365.99 g/mol = 1.244 g

Rounding to 3 significant digits, the theoretical yield of 2,3-dibromo-3-phenylpropanoic acid is 1.24 g.

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The molarity of C₆H₈O₇ in commercially available lemon juice is 0.50 M.

First, we need to write the balanced chemical equation for the reaction between C₆H₈O₇ (citric acid) and NaOH (sodium hydroxide):

C₆H₈O₇ + 3NaOH → Na₃C₆H₅O₇ + 3H₂O

From the balanced equation, we can see that 1 mole of citric acid reacts with 3 moles of NaOH.

moles of citric acid = (moles of NaOH used in titration) ÷ 3

The moles of NaOH used in titration is calculated by multiplying its molarity by the volume used,

moles of NaOH used = (1.10 mol/L) × (11.00 mL / 1000 mL) = 0.0121 mol

The number of moles of citric acid,

moles of citric acid = 0.0121 mol ÷ 3 = 0.00403 mol

molarity of citric acid = 0.00403 mol / (20.0 mL / 1000 mL) = 0.50 M

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0.540M

Explanation:

The concentration of lithium ions in a 0.270 M Li₂SO₄ solution can be calculated as follows:

1. Determine the ratio of lithium ions (Li⁺) to the whole Li₂SO₄ formula unit. In Li₂SO₄, there are 2 Li⁺ ions for every 1 formula unit of Li₂SO₄.

2. Multiply the given concentration of Li₂SO₄ (0.270 M) by the ratio of Li⁺ ions to the formula unit (2:1).

0.270 M Li₂SO₄ × (2 Li⁺ ions / 1 Li₂SO₄ formula unit) = 0.540 M Li⁺ ions

So, the concentration of lithium ions in a 0.270 M Li₂SO₄ solution is 0.540 M.

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