Which element is most likely suspected?
iron
Sulfur
Chromium
Nickel

Answer:

V=mass/Density

Explanation:

Since density is measured as grams/mL or grams/cm^3 and we are interested in converting mass to volume, we need to rewrite the equation.
Therefore, in order to convert the gram to mL, you just need to multiply the mass of the substance in grams with its density to get the volume in liters.

Answer:

Volume equals mass divided by density.

and

Mass equals density times volume.

Hope this helps :)

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The concept ideal gas equation is used here to determine the volume of the carbondioxide. Combustion reactions are generally highly exothermic reactions. The volume of CO₂ is

A combustion is a chemical reaction in which a fuel undergoes oxidation as a result of the reaction with an oxidizing agent which causes the release of energy in the form of heat.

15.0 °C = 288 K

The ideal gas equation is:

PV = nRT

V = nRT / P

V = 354 × 0.0821 × 288 / 0.995 = 8412.3 L

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The relative atomic mass of chlorine is 35.5 and its molecular mass is 71 g/mol.

Given that;

1amu = 1.66 x 10-24 grams

To find the mass of chlorine-35 in amu = 5.807 x 10-23 g × 1 amu/ 1.66 x 10-24 grams

= 34.98 amu

To find the mass of chlorine-37 in amu;  6.139 x 10-23 g × 1 amu/ 1.66 x 10-24 grams

= 36.98 amu

To find the relative atomic mass of chlorine;

RAM = (0.7577 × 34.98 amu) + (0.2423 × 36.98 amu)

RAM = 26.50 + 8.96

RAM = 35.5

Since chlorine is a diatomic substance that exists as Cl2, the molar mass of chlorine is 2(35.5) = 71 g/mol

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Answer:

162.4 cm

Explanation:

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There is only one cesium ion on reactant (left hand side) of the reaction equation.

The formation of cesium fluoride involves the combination of cesium ion and fluoride ion. Cesium fluoride is an ionic compound since it is composed of ions.

The reaction between cesium ions and fluoride ions to form cesium fluoride occurs as follows;

Cs^+ + F^- ------> CsF

So, there is only one cesium ion on reactant (left hand side) of the reaction equation.

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As the wind slows, silt is deposited because the wind has less energy.

Deposition in rivers and streams. A stream or river begins to deposit silt when it begins to slow down. In steep terrain, larger sediments fall, but smaller sediments can still be carried. As the slope gets less steep, smaller sediments are dropped.

Sediment that has been eroded is deposited in a new location when the speed of the wind or water slows. Fertile land is produced as a result of the sedimentation process.

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Three solutions are mixed together to form a single solution. The precipitate in the solution is PbS and PbCl₂.

Precipitates are the residues that are present in the solution. These residues are solid that came out of the solution.

Here given 3 compounds are water-soluble.

From the solution, we have to find the possible combination which is water-soluble.

Consider,

Pb(CH3COO)₂ Pb₂+(aq) + 2CH₃COO-(aq)

Na₂S₂Na+(aq) + S₂-(aq)

LiCl Li+(aq) + Cl-(aq)

Now consider a potential accumulation of positive and negative ions which is water-soluble.

The possible accumulations are,

PbS , PbCl₂

Ca(CH₃COO)₂ , CaS

Now viewing with solubility charge, we can find that both PbS and PbCl2 are water indissoluble and create a precipitate.

But both Ca(CH₃COO)₂ and CaS are water-soluble.

Therefore, the precipitates are PbS and PbCl₂.

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Answer:

I can say that knowledge of separating mixtures can help us in daily life and within society in the following ways:

1. Purification of water: Separation techniques are used to purify water for drinking and industrial purposes. It is essential to remove impurities from water to prevent diseases.

2. Recycling: Separation techniques are used to separate materials for recycling. This helps reduce the amount of waste in landfills and helps conserve resources.

3. Food industry: Separation techniques are used in the food industry to separate unwanted particles from food products. This helps ensure that the food we eat is safe and free from contaminants.

4. Medicine: Separation techniques are used in the pharmaceutical industry to separate and purify chemicals for use in medicine. This helps ensure that medicines are safe and effective.

5. Environmental protection: Separation techniques are used to remove pollutants from the environment. This helps protect our natural resources and prevent pollution-related health problems.

6. Oil and gas industry: Separation techniques are used to separate crude oil and natural gas into their various components. This helps in the production of energy and other useful products.

In summary, knowledge of separating mixtures is essential in our daily lives and within society. It helps ensure that we have access to safe and clean water, food, medicine, and energy, and also helps protect the environment.

Explanation:

The pressure of the gas is now obtained as 32.7 atm.

We know that the reaction has been shown in the question and we have been asked to be able to obtain the final pressure of the system. We need to obtain the limiting reactant so that we can be able to get the amount of the product that is formed.

If 1 mole of phosphorus reacts with 6 moles of chlorine

0.351 moles of  phosphorus reacts with 0.351 moles * 6 moles/1 mole

= 2.1 moles

Thus chlorine is the limiting reactant.

6 moles of chlorine produces 4 moles of phosphorus trichloride

1.17 moles of chlorine produces 1.17 moles * 4 moles/6 moles

= 0.78 moles

We would now apply the ideal gas equation;

PV = nRT

P = pressure

V = volume

n = Number of moles

R = gas constant

T = temperature

Then

P = nRT/V

P = 0.78 * 0.082 * 572/1.12

P = 32.7 atm

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Answer:

We can use the formula for heat lost by a substance to calculate the final temperature:

Q = m * c * ΔT

where Q is the heat lost, m is the mass of the substance, c is the specific heat capacity of the substance, and ΔT is the change in temperature.

In this case, we know the values of Q, m, and c, and we need to find ΔT. Rearranging the formula, we have:

ΔT = Q / (m * c)

Substituting the given values, we get:

ΔT = 9750 J / (335 g * 4.18 J/(g*°C)) ≈ 6.9 °C

Therefore, the final temperature of the water is:

65.5 °C - 6.9 °C ≈ 58.6 °C

So the final temperature of the water is approximately 58.6 °C.

The final temperature of the water is approximately 58.5°C.

To find the final temperature of the water, we first need to understand that the heat lost by the water is calculated using the formula q = mcΔT, where 'q' is the Heat Transfer, 'm' is the mass of the water, 'c' is the specific heat of the water, and 'ΔT' is the change in temperature.

First, rearrange the formula to find ΔT = q/(mc).

Then, insert the given values (q = -9750 J, m = 335 g, c = 4.18 J/g°C).

The negative sign denotes heat loss.

You will find ΔT is approximately -7°C.

This is the amount the temperature decreases.

Subtract ΔT from the initial temperature of the water (65.5°C - 7°C), to get the final temperature of approximately 58.5°C.

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The bonds would be arranged in order of decreasing polarity as follows: H-F Bond (most polar) > O-H Bond and C-H Bond (tied) > C-C Bond (least polar).

In order to arrange the bonds in order of decreasing polarity, we can look at the electronegativity difference between the two atoms of each bond. Electronegativity differences will determine whether the bond is polar, nonpolar, or ionic.

In general, the polarity of a bond is determined by the electronegativity difference between the atoms in the bond. The greater the difference in electronegativity, the more polar the bond is likely to be.

The following is a list of the bonds in order of decreasing polarity, based on the information provided in the table:

The table shows the following:

H-F Bond: Electronegativity difference = 1.9

C-H Bond: Electronegativity difference = 0.4

C-C Bond: Electronegativity difference = 0

HF is the least polar bond since the difference in electronegativity between hydrogen and fluorine is smaller than the differences between the other atoms in the list.

Therefore, the bonds would be arranged in order of decreasing polarity as follows: H-F Bond (most polar) > and C-H Bond (tied) > C-C Bond (least polar).

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The complete questions is:

Based on the information in the table, which of the following arranges the bonds in order of decreasing polarity

The table shows the following:

H-F Bond: Electronegativity difference = 1.9

C-H Bond: Electronegativity difference = 0.4

C-C Bond: Electronegativity difference = 0

Answer:

the total mass of insulin in the bottle would be 3.75 g

hope this helps :)

Explanation:

c= 50 mg/mL  

m = ?

v = 125 mL

c=m/v

\(\frac{50mg}{mL}\)=\(\frac{m}{125mL}\)

m=30×125

m=3750 mg or 3.75 g

Insulin has been the peptide hormone that is produced by the pancreatic cell of the body. The insulin solution of a concentration of 50 mg/ml has a mass of 6.25 grams.

Insulin has been the protein that is crucial for cell activity and function. It is a hormone that regulates the blood glucose level in a diabetic patient. The beta cell of the islets of the Langerhans of the pancreas makes insulin.

The glucose formed from the breaking of carbohydrates is controlled in the blood by insulin production so that the metabolic process can take place in an orderly manner.

Given,

Concentration of insulin hormone = 50 mg/mL

The volume of insulin in bottle = 125 mL

The mass of insulin can be calculated from the molar concentration and volume as:

Concentration = mass ÷ volume

Substituting the values above as:

50 mg/mL = mass ÷ 125 mL

Mass = 50 mg /mL × 125 mL

Mass = 6250 mg

The unit of mass is converted from milligram into gram as:

1 gm = 1000 mg

x gm = 6250 mg

x = 6.250 gm

Therefore, 50 gm/mL of concentration has 6.25 gm of insulin in it.

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To break the bonds in the hydrogen molecules in the reaction N2(g) + 3H2(g) → 2NH3(g), approximately 1305 kJ of energy needs to be supplied.

In order to break the bonds in the hydrogen molecules (H2), energy needs to be supplied to overcome the attractive forces between the atoms within the molecules. Breaking bonds requires an input of energy and is an endothermic process.

In the given chemical reaction, N2(g) + 3H2(g) → 2NH3(g), the hydrogen molecules (H2) are broken as the reactants, N2 and H2, are converted into ammonia (NH3).

Breaking one H2 molecule requires the energy equivalent to the bond dissociation energy (also known as bond energy) of the H-H bond. The bond dissociation energy is the energy required to break one mole of a particular bond in a gaseous molecule.

The bond dissociation energy for the H-H bond is approximately 435 kJ/mol. This means that it takes approximately 435 kJ of energy to break one mole of H-H bonds.

In the given reaction, three moles of H2 molecules are involved. Therefore, the total energy required to break the bonds in the hydrogen molecules is:

Energy required = 3 moles * 435 kJ/mol = 1305 kJ

So, to break the bonds in the hydrogen molecules in the reaction N2(g) + 3H2(g) → 2NH3(g), approximately 1305 kJ of energy needs to be supplied.

It's important to note that breaking bonds requires energy input, while forming bonds releases energy. In this reaction, the formation of new bonds in the ammonia (NH3) molecules will release energy, resulting in an overall exothermic reaction. The energy change of the reaction, often referred to as the enthalpy change (ΔH), will depend on the difference between the energy required to break the bonds and the energy released when new bonds are formed.

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1) There are 18 electrons and 20 protons

2) There are 21 neutrons hence the mass number is 41

An ion is created when an atom gains or loses one or more electrons. An atom is composed of a nucleus, which contains positively charged protons and neutral neutrons, and electrons, which orbit the nucleus.

If an atom gains one or more electrons, it becomes negatively charged and is known as an anion. If an atom loses one or more electrons, it becomes positively charged and is known as a cation.

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Answer:

Explanation:

4)6.27x10^20/(6.02x10^23)(u should have this number on your formula sheet)=0.001 mol

5)7.4x6.02x10^23=44.548x10^23atoms

6)molar mass for K is 39.10g/mol

3.27x39.10=127.86g

Im bad at sig figs. Just do it urself(:p

Answer:

Explanation:

c) fusion combines into one product plus energy

Answer:

b. gelatin

Explanation:

a homogeneous noncrystalline consisting of large molecules or ultramicroscopic particles of one substance.

Density is the ratio between the mass of a material and its volume (d = m/V) at a given temperature and pressure.

So first we need to find the mass of the material. We can do it calculating the mass of the flask with the liquid minus the mass of the flask without the liquid.

mass of the flask with the liquid = 184.0 g

mass of the flask without the liquid = 176.3 g

mass of the material = 184.0 - 176.3 = 7.7 g

Now we use the following equation: d = m/V

where:

d = density

m = mass = 7.7 g

V = 9.20 mL

d = 7.7/9.20

d = 0.84 g/mL

Answer: d = 0.84 g/mL

Answer:

1. To determine the number of moles of copper in 5.00 grams of copper wire, we need to use the molar mass of copper. The molar mass of copper is 63.55 g/mol. We can use the following conversion factor:

1 mol Cu = 63.55 g Cu

Using this conversion factor, we can calculate the number of moles of copper:

5.00 g Cu × (1 mol Cu / 63.55 g Cu) = 0.0787 mol Cu

Therefore, there are 0.0787 moles of copper in 5.00 grams of copper wire.

2. To determine the number of moles of glycine molecules in 28.35 grams of glycine, we need to use the molar mass of glycine. The molar mass of glycine is 75.07 g/mol. We can use the following conversion factor:

1 mol glycine = 75.07 g glycine

Using this conversion factor, we can calculate the number of moles of glycine molecules:

28.35 g glycine × (1 mol glycine / 75.07 g glycine) = 0.3778 mol glycine

Therefore, there are 0.3778 moles of glycine molecules in 28.35 grams of glycine.

3. a. To determine the mass of the daily dietary allowance of vitamin C in grams, we can use the following conversion factor:

1 mol C6H8O6 = 176.12 g C6H8O6

Using this conversion factor, we can calculate the mass of the allowance:

1.42 × 10^-4 mol C6H8O6 × (176.12 g C6H8O6 / 1 mol C6H8O6) = 0.0248 g

Therefore, the mass of the daily dietary allowance of vitamin C for children aged 4-8 years is 0.0248 grams.

b. To determine the number of moles of carbon in 1.42 × 10^-4 mol of C6H8O6, we can use the molar mass of carbon. The molar mass of carbon is 12.01 g/mol. There are 6 carbons in each molecule of C6H8O6, so we can use the following conversion factor:

6 mol C / 1 mol C6H8O6

Using this conversion factor, we can calculate the number of moles of carbon:

1.42 × 10^-4 mol C6H8O6 × (6 mol C / 1 mol C6H8O6) = 8.52 × 10^-4 mol C

Therefore, there are 8.52 × 10^-4 moles of carbon in 1.42 × 10^-4 mol of C6H8O6.

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Answer:

Copper, Sodium, and Francium

Explanation:

The new volume is approximately 197 L. The correct option is C

We can use the combined gas law, which relates the pressure (P), volume (V), and temperature (T) of a gas. The combined gas law states that:

(P1 x V1) / T1 = (P2 x V2) / T2

Where

In this case, we know that the initial volume (V1) is 400 L and the initial temperature (T1) is 600 K. We want to find the final volume (V2) when the temperature (T2) drops to 295 K. We can assume that the pressure is constant.

Substituting these values into the combined gas law, we get:

(P1 x V1) / T1 = (P2 x V2) / T2

P1 and P2 are the same, so we can cancel them out:

V1 / T1 = V2 / T2

Substituting the values we know:

400 L / 600 K = V2 / 295 K

Solving for V2, we get:

V2 = (400 L / 600 K) x 295 K

V2 = 196.67 L

So, the new volume is approximately 197 L

Therefore the correct option is C

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Mescaline produces a wide range of psychoactive effects when ingested, including altered perception of reality, hallucinations, and euphoria. It is a powerful psychedelic drug that has been used for centuries by Native American tribes in spiritual ceremonies

Mescaline is a hallucinogenic alkaloid that is derived from the Peyote cactus. Mescaline is a complex organic molecule that can be synthesized in the laboratory from 3,4,5-trimethoxybenzyl bromide in two steps.The first step involves nucleophilic substitution using sodium cyanide, and the second step is a reduction using lithium aluminum hydride (LAH).Here's how mescaline can be synthesized from 3,4,5-trimethoxybenzyl bromide:Step 1: Nucleophilic substitution using sodium cyanideThe reaction of 3,4,5-trimethoxybenzyl bromide with sodium cyanide results in the formation of the nitrile derivative. NaCN serves as the nucleophile in this reaction, and it replaces the bromide ion.The mechanism for this reaction involves the following steps: A nucleophilic attack by the cyanide ion on the benzyl bromide. The carbon-bromine bond breaks, and the benzyl cation is formed. A second nucleophilic attack by the cyanide ion occurs on the benzyl cation, resulting in the formation of the nitrile derivative.Here's the reaction equation for this step:Step 2: Reduction using lithium aluminum hydrideThe next step is the reduction of the nitrile derivative using LAH. LAH serves as a strong reducing agent in this reaction and reduces the nitrile derivative to the amine. The mechanism for this reaction involves the following steps: A nucleophilic attack by LAH on the nitrile derivative. This results in the formation of an imine intermediate. The imine intermediate reacts with another LAH molecule, resulting in the formation of the amine.Here's the reaction equation for this step:Mescaline structure: Mescaline is a psychoactive compound that belongs to the phenethylamine class of alkaloids. The structure of mescaline is as follows: The molecule has three methoxy groups attached to the benzene ring, and it has an amine functional group. The molecule is a white crystalline powder that is soluble in water and alcohol.

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Answer:

moles reactant = 2, moles of products = 3

Explanation:

The reactants are on the left side of the equation. Although, energy (heat) is a reactant it will not factor into the calculation for moles. The coefficient is the number of moles for each substances. So for the reactant side NO would have 2 moles because the coefficient is 2. Using the same logic, NO on the product side will have 2 moles and O2 will be 1 mole. O2 has one mole because it is implied that you know anything multipled by one is the same number. So 1 mole of O2 is written as O2 and not 1 O2.

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The products of the reaction as shown are silver chloride and potassium nitrate. option A

If we talk about a reaction we have to look at the kind of combination in which there is the mixture of two or more substance that can be able to interact in some ways and then give rise to a product that is different from the products that were combined.

Here in the case of what we have here there is the combination of the silver nitrate and the potassium chloride and the products of the double replacement reaction that we would get are the silver chloride and the potassium nitrate.

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Answer:

Carbon dioxide molecules are heavier than air. Because of this, they push the oxygen and other molecules in the air out of the way as they sink down over the flame. Fire needs oxygen to burn so the fire is put out.

Explanation:

The normal boiling point of the unknown liquid is 57.4°C.

The normal boiling point occurs when the vapor pressure of the liquid is equal to the atmospheric pressure. At normal boiling point, the temperature of the liquid is called the boiling point.

Using the Clausius-Clapeyron equation:

ln(P₂/P₁) = -(ΔHvap/R) * (1/T₂ - 1/T₁)

where P₁ is the vapor pressure at the given temperature T₁, P₂ is the vapor pressure at the boiling point temperature T₂, ΔHvap is the heat of vaporization, R is the gas constant.

At -170°C, the vapor pressure of the liquid is given as P₁ = 117 torr. At normal boiling point, the vapor pressure of the liquid is P₂ = 760 torr.

Converting all units to SI units, we have:

P₁ = 15.47 Pa

P₂ = 101325 Pa

ΔHvap = 5480 J/mol

R = 8.314 J/(mol*K)

Plugging in the values, we get:

㏑(101325/15.47) = -(5480/8.314) * (1/T₂ - 1/103.15)

Solving for T₂, the boiling point is found to be:

T₂ = 57.4°C

As a result, the unknown liquid's usual boiling point is 57.4°C.

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Answer:

PCl3 + 3H2O → HPO(OH)2 + 3HCl. Phosphorus(III) chloride react with water to produce phosphorous acid and hydrogen chloride.

Explanation:

Answer:

the answer is stop studying,enjoy your life,party all night,bite like a dog and purr like a cat thats it

Explanation:

i dunno

Answer:

Nickel(III) oxide is the chemical name of the compound represented by the formula Ni2O3?