CHEM FINAL PLEASE HELP
This is?
alkene
aromatic hydrocarbon
alkyne
alkane

Answer:

Soap breaks up the oil into smaller drops, which can mix with the water.

Explanation:

This works because soap is made up of molecules with two different ends.

The soap molecules works as a surfactant for the water oil interphase. The hydrophobic head of the soap molecules trap the oil and dirt ad remove from the surface.

Surfactants are chemical substances used to reduce the interfacial tension between substance boundary. Soaps and detergents acts as surfactants which are used to remove the dirt and oil from material surface.

Soap has both polar and non-polar characteristics. The alkaline part  in the soap causes it to have a polar head, and because of the electric charge on this head, the soap is hydrophilic. A hydrophilic part of soap is drawn to water and will cling to it.

In this instance, the positive-charged hydrogen atoms of the water's hydrogen atoms match with the polar head of the soap molecule. The other part of soap is a fatty acid tail, which is hydrophobic and can bind with the oil and dirt. The trapped oil molecules are then be removed by water.

To find more on surfactants refer here:

https://brainly.com/question/3062579

#SPJ2

1.08 moles of O₂ reacted in the given reaction.

To answer this question, we need to use the coefficients of the balanced chemical equation to determine the ratio of moles of O₂ to moles of H₂O produced.
From the balanced equation, we can see that 1 mole of C2H4N reacts with 4 moles of O₂ to produce 2 moles of H₂O. This means that the ratio of moles of O₂ to moles of H₂O is 4:2 or simply 2:1.
If 0.5399 moles of H₂O were produced, we can use this ratio to determine the number of moles of O₂ that reacted.
2 moles of H₂O (produced) : 4 moles of O₂ (reacted)
0.5399 moles of H₂O (produced) : x moles of O₂ (reacted)
Solving for x, we get:
x = (0.5399 moles H₂O)(4 moles O₂/2 moles H₂O)
x = 1.08 moles O₂
To know more about moles visit:

https://brainly.com/question/26416088

#SPJ11

Answer:

All of these stoichiometry problems are worked alike. Here is the 4 step process.

4Na + O2 → 2Na2O

Step 1. Write and balance the equation. You have that.

Step 2. Convert whatever you have to mols. If a solid then mols = grams/molar mass = ?. If a solution then mols = M x L = ? In this case, the molar mass of Na2O is approx 62 so mols = 2/62 = approx 0.03 but that's just a close guess. You should do it more accurately.

Step 3. Using the coefficients in the balanced equation, convert mols of what you have to mols of what you want. You have mols Na2O and you want to convert that to mols Na.

0.03 mols Na2O x (4 mols Na/2 mols Na2O) = about 0.06. Note that mols Na2O in the numeratorof the first term cancels with mols Na2O in the denominator of the second term which leaves mols Na which is what you want. In practice you ALWAYS know that the coefficient of the unit you are converting to goes on top and the coefficient of mols you have goes on the bottom.

4. Now convert mols of what you want to grams. grams = molsl x molar mass - about 0.06 x 23 = about ?

Copy this. It can come in handy for every chemistry course you take.

Explanation:

According to the stoichiometry of the given chemical equation, 1.703 g of sodium is needed to make 2 g sodium oxide.

Stoichiometry is the determination of proportions of elements or compounds in a chemical reaction. The related relations are based on law of conservation of mass and law of combining weights and volumes.

Stoichiometry is used in quantitative analysis for measuring concentrations of substances present in the sample.It is used in balancing chemical equations and preparation of solutions.From the given chemical equation, 92 g sodium gives 108 g sodium oxide, thus, 2 g is prepared by 92×2/108=1.703 g of sodium.

Thus, according to the stoichiometry of the given chemical equation, 1.703 g of sodium is needed to make 2 g sodium oxide.

Learn more about stoichiometry,here:

https://brainly.com/question/9743981

#SPJ2

Answer:

3 Hz

Explanation:

frequency = \(\frac{number of waves}{time}\)

thus \(f=\frac{6}{2}\) = 3 Hz

If there are 6 waves in a 2-second time frame, the frequency is 3 Hz. When a wave travels through a medium, the frequency describes how frequently the medium's particles vibrate.

The frequency identifies the frequency at which the particles of the medium vibrate as a wave passes through it.

Frequency = number of waves ÷time

The number of waves is  6 and time is 2 second

     f = 6 ÷ 2

      =  3

A disturbance or variation that causes energy to be transferred gradually from one point to another in a medium. It can be an elastic deformation or a change in pressure, electric potential, electric or magnetic intensity, or temperature.

Therefore, if there are 6 waves in a 2-second time frame, the frequency is 3 Hz.

Learn more about frequency, here:

https://brainly.com/question/18125929

#SPJ2

Answer: 11, Na, 23, 100, −9.529 ... phosphorus, 15, P, 31, 100, −24.441 ... manganese, 25, Mn, 55, 100, −57.706.

Explanation: Make me Brainelist

The mass of the water that is produced in the reaction is 45 g .

Reaction stoichiometry is a fundamental concept in chemistry and is used in various applications, including determining the efficiency of chemical reactions, calculating reaction yields, and designing reaction processes in industry.

Number of moles of hydrogen = 5g/2 g/mol

= 2.5 moles

Given the balanced reaction equation;

2 mole of hydrogen produces 2 moles of water

2.5 moles of hydrogen would produce 2.5 moles of water

Mass of the water = 2.5 moles * 18 g/mol = 45 g

Learn more about stoichiometry:https://brainly.com/question/28780091

#SPJ1

In the first  two  chemical equations, double displacement reactions occur as the ions are exchanged between the 2 reactants while in last one no reaction takes place as both ammonium and potassium salts are soluble.

Chemical equation is a symbolic representation of a chemical reaction which is written in the form of symbols and chemical formulas.The reactants are present on the left hand side while the products are present on the right hand side.

A plus sign is present between reactants and products if they are more than one in any case and an arrow is present pointing towards the product side which indicates the direction of the reaction .There are coefficients present next to the chemical symbols and formulas .

Learn more about chemical equation,here:

https://brainly.com/question/30087623

#SPJ1

Answer:

One word for this is, raconteur - it means a person skilled in telling anecdotes. anecdotist. narrator,  or storyteller

Explanation:

Answer:

Specialized cells are found only in multicellular organisms.

Explanation:

Or organisms are made up of more than one cell.

Specialized cells are generally found only in multicellular organisms.

A multicellular organism can be described as an organism that contains more than one cell, in contrast to a unicellular organism. Multicellularity has been independently at least 25 times in eukaryotes and in some prokaryotes, like myxobacteria, cyanobacteria, and actinomycetes.

All species of animals, plants, and most fungi are multicellular organisms, whereas a few organisms are partially uni- and partially multicellular, such as slime molds and social amoebae.

Multicellular organisms develop in many ways such as by cell division or by aggregation of many single cells. Colonial organisms can be defined as identical individuals joining together to form a colony.

Unicellular organisms are divided, and the daughter cells failed to separate which results in a conglomeration of identical cells in one organism, which could develop specialized tissues.

Learn more about Multicellular organisms, here:

https://brainly.com/question/24381583

#SPJ2

Answer: (A) 1s

Explanation:

Answer:

B A B  sorry if its wrong

Explanation:

Circuits can be connected in series or parallel but the maximum voltage is obtained in series connection, thus, light bulbs shine brightest in series connection.

A parallel circuit connection is one in which the terminals of all the components in th circuit meet at two points.

The components are parallel to each other and current flows in multiple directions.

A series connection in a circuit is one in which the terminals of the component parts in a circuit are joined end to end. Current flows in one direction.

The voltage in a series connection is the sum of all the individual cells, therefore, the light bulb in series connection shines brightest.

Learn more about parallel and series circuits at: https://brainly.com/question/1122566

#SPJ2

Answer:

it intends to increase to be the same across a period

The balanced equation of the given reaction is as follows: 5SiO2 + 2CaC2 → 5Si + 2CaO + 4CO2.

A chemical equation is said to be balanced when the number of atoms of each element on both sides of the equation is the same.

According to this question, a chemical reaction between quartz and calcium chloride is given to produce silicon, calcium oxide and carbon dioxide.

The balanced equation that represents an equal number of atoms on both sides is as follows:

5SiO2 + 2CaC2 → 5Si + 2CaO + 4CO2

Learn more about balanced equation at: https://brainly.com/question/7181548

#SPJ1

Answer:

7.75 kg

Explanation:

Archimedes’ principle tells you that the weight of the water displaced is equal to the buoyancy force:

To keep the wood afloat, the buoyancy force must have the same magnitude as the force of gravity on the block, so

The volume of water displaced is

So the mass of water displaced is

Thus, the mass of the piece of wood is 7.75 kilograms.

A) If, the pressure is 10.0 atm, the temperature in the 2.50 L container filled with 175 g of argon is approximately 57.3 K. B) If the temperature is 225 K, the pressure in the 2.50 L container filled with 175 g of argon is approximately 79.1 atm.

Firstly, we can use the ideal gas law equation;

PV = nRT

Where;

P = pressure (in atm)

V = volume (in liters)

n = number of moles of gas

R = ideal gas constant (0.0821 L·atm/mol·K)

T = temperature (in Kelvin)

Given;

V = 2.50 L

m (mass of argon) = 175 g

P = 10.0 atm

First, we need to calculate the number of moles of argon using the given mass and the molar mass of argon.

The molar mass of argon will be approximately 39.95 g/mol.

Number of moles (n) = mass/molar mass

n = 175 g / 39.95 g/mol

n ≈ 4.38 mol

Now, we rearrange the ideal gas law equation to solve for temperature (T);

T = PV / (nR)

Substituting the given values, we have:

T = (10.0 atm) × (2.50 L) / (4.38 mol × 0.0821 L·atm/mol·K)

Calculating this expression, we find;

T ≈ 57.3 K

Therefore, if the pressure is 10.0 atm, the temperature in the 2.50 L container filled with 175 g of argon is approximately 57.3 K.

Given;

T = 225 K

To find the pressure (P), we rearrange the ideal gas law equation as follows;

P = nRT / V

Substituting the given values, we have:

P = (4.38 mol × 0.0821 L·atm/mol·K × 225 K) / (2.50 L)

Calculating this expression, we find:

P ≈ 79.1 atm

Therefore, if the temperature is 225 K, the pressure in the 2.50 L container filled with 175 g of argon is approximately 79.1 atm.

To know more about container here

https://brainly.com/question/13227218

#SPJ4

--The given question is incomplete, the complete question is

"A 2.50-L container is filled with 175 g argon. a. If the pressure is 10.0 atm, what is the temperature? b. If the temperature is 225 K, what is the pressure? "--

To calculate the moles of iron present in 1 kg of Himalayan pink salt, we need to convert the given value of iron concentration from mg/kg to mol/kg.

Given: Iron concentration = 39 mg/kg

First, we need to convert mg to grams:

39 mg = 39 * 10^-3 g

Next, we convert grams of iron to moles using the molar mass of iron (Fe), which is approximately 55.845 g/mol:

Moles of iron = (39 * 10^-3 g) / (55.845 g/mol)

Now we can calculate the moles of iron per kilogram (mol Fe/kg salt):

Moles of iron per kilogram = (39 * 10^-3 g) / (55.845 g/mol)

To calculate the moles of iron per liter of salt (mol Fe/L salt), we need to use the volume of one kilogram of Himalayan pink salt in L/kg, which you mentioned you have already calculated:

Moles of iron per liter of salt = (Moles of iron per kilogram) * (Volume of 1 kg of salt in L/kg)

Substitute the values you have calculated to obtain the final answer for the moles of iron per liter of salt.

To know more about mole concept, click here:-

https://brainly.com/question/22540912

#SPJ11

The volume of NaOH required is:(0.000914 mol NaOH) / (8.50×10−2 M NaOH) = 0.0108 L NaOH = 10.8 mL of NaOH is required.

Answer: 10.8 mL.

To determine the milliliters of 8.50×10−2 M NaOH required to titrate each of the following solutions to the equivalence point, use the following equations:

a) NaOH(aq) + HCl(aq) → NaCl(aq) + H2O(l)

Molarity is defined as the number of moles of solute per liter of solution.

The concentration of NaOH is given as 8.50×10−2 M.

Therefore, the number of moles of NaOH is:(8.50×10−2 M)(V NaOH) = n NaOH

where V NaOH is the volume of NaOH solution.

b) NaOH(aq) + HC2H3O2(aq) → NaC2H3O2(aq) + H2O(l)

Molarity is defined as the number of moles of solute per liter of solution.

The concentration of NaOH is given as 8.50×10−2 M.

Therefore, the number of moles of NaOH is:(8.50×10−2 M)(V NaOH) = n NaOHwhere V NaOH is the volume of NaOH solution.

c) HCl(aq) + NaOH(aq) → NaCl(aq) + H2O(l)

The number of moles of HCl is the product of the concentration and volume.

Hence, the number of moles of HCl is:(1.85 g/L HCl)(1 mol HCl/36.46 g HCl)(0.055 L HCl) = 0.000914 mol HCl

Molarity is defined as the number of moles of solute per liter of solution.

The concentration of NaOH is given as 8.50×10−2 M.

Therefore, the number of moles of NaOH required is:0.000914 mol HCl × (1 mol NaOH/1 mol HCl) = 0.000914 mol NaOH.

For similar question on titration.

https://brainly.com/question/13031875

#SPJ11

279.448 kJ/mol is ΔH∘(rxn) for the given reaction. An attribute or state function that mimics energy is enthalpy.

The entire internal energy of a thermodynamic system is known as enthalpy, which is also known as the volume-to-pressure ratio. It has the same dimensions as energy and therefore can be expressed in joules or ergs. The value of enthalpy is solely dependent on the pressure, temperature, and chemical makeup of the system, not on its history.

Cr\(_2\)O\(_3\)(s)= -1128.4 kJ/mol

CO (g)=-110.525 kJ/mol

Cr (s)=0 kJ/mol

CO\(_2\) (g)=-393.509 kJ/mol

ΔH∘(rxn) = ΔH∘(products) - ΔH∘(reactants)

ΔH∘(rxn) = ΔH∘(products) - ΔH∘(reactants)

(2×0) + (3×-393.509) = -1,180.527 kJ/mol=ΔH∘(products)

(1×-1128.4) + (3×-110.525) = -1,459.975 kJ/mol=ΔH∘(reactants)

ΔH∘(rxn) = -1,180.527 - (-1,459.975) = 279.448 kJ/mol

To know more about enthalpy, here:

https://brainly.com/question/29145818

#SPJ1

The balanced chemical equation for the reaction between iron (Fe) and nitrogen (N) to form iron nitride (Fe2N) is: 6 Fe + N2 → 2 Fe2N

This equation is balanced because there are equal numbers of atoms of each element on both sides of the arrow, and the ratio of the reactants and products is 6:1 for Fe and N2, and 2:1 for Fe2N.

To balance the equation, we need to make sure that the number of atoms of each element is the same on both sides of the equation. Here's how we can do it:

On the LHS, we have 6 atoms of Fe and 2 atoms of N (since N2 consists of 2 nitrogen atoms bonded together).

On the RHS, we have 4 atoms of Fe (2 atoms in each Fe2N molecule) and 2 atoms of N (1 atom in each Fe2N molecule).

To balance the equation, we can multiply the reactants by 3 to get 6 Fe atoms and 6 N atoms:

6 Fe + 3 N2 → 2 Fe2N

Learn more about balanced reaction here: https://brainly.com/question/26694427

#SPJ1

In a cation of Beryllium with a +1 charge, there Protons=4, Neutrons=4, Electrons=3, hence, option B is correct.

When Beryllium loses one electron to form a cation with a +1 charge, it becomes Be+1. The number of neutrons remains the same as in the neutral atom, which is 4. Option B is the right answer since protons equal 4, neutrons equal 4, and electrons equal 3.

The electron configuration of an ion, such as the +1 charge Beryllium cation, determines its characteristics, which impact its reactivity and chemical behavior.

To know more about Beryllium, visit,

https://brainly.com/question/13252061

#SPJ1

Answer:

Benzaldehyde (C6H5CHO) is an organic compound consisting of a benzene ring with a formyl substituent. It is the simplest aromatic aldehyde and one of the most industrially useful.

Answer:

Au = Element

NaCl = Compound

Salad = Heterogeneous

NaCl & Water = Homogeneous

Answer:

25

Explanation:

Answer:

Yes, that is correct!

Explanation:

Answer:

Yes

Explanation:

A covalent bond consists of the mutual sharing of one or more pairs of electrons between two atoms. These electrons are simultaneously attracted by the two atomic nuclei. A covalent bond forms when the difference between the electronegativities of two atoms is too small for an electron transfer to occur to form ions.

Answer:

B

Explanation:

One of the main problems is the soil erosion reducing the fertitlity of the soil, thus reducing it's chances of the soil helping plant growth, thus reducing biodiversity. The other selections worsen the problem.

The molecules of isopropyl alcohol do not stick collectively as strongly at room temperature as water molecules do, because of this the alcohol evaporates more quickly than water does.

DNA isn't soluble in ethanol, consequently, it will clump collectively and come to be visible. The colder the ethanol, the less soluble the DNA can be in it, which is why it's far critical for the ethanol to be kept bloodless.

Isopropyl Alcohol may also shape an ignitable vapor/air combination in closed tanks or boxes. Isopropyl Alcohol can react with AIR and OXYGEN over the years to shape unstable peroxides which can explode. Isopropyl Alcohol forms explosive combos, whilst heated, with ALUMINUM.

Learn more about isopropanol here:-https://brainly.com/question/799124

#SPJ4

The answer to your problem is 0.015 liters. I got the answer because to convert cubic centimeters into liters, you need to divide the cubic centimeters by 1000.

Answer:

C. H:C:H:H

Explanation:

Follow these simple steps to correctly draw a Lewis dot structure: Add up the total number of valence electrons found in the entire compound. Draw the simple structure (skeleton structure) of the compound by connecting everything with single bonds only. Add electrons to all the noncentral atoms. Put any unused electrons on the central atom.