What type of wave is shown here?
:transverse wave
:longitudinal wave

Answer:

longer/less

Explanation:

In moving from left to right on the periodic table, electromagnetic waves have longer wavelength and less energy.

The electromagnetic radiation diagram is made up of electromagnetic waves.

Answer:

Number of moles = 0.153 mol

Explanation:

Given data:

Mass of sulfur = 5 g

Number of moles of sulfur atom = ?

Solution:

Formula:

Number of moles = mass/molar mass

Molar mass of sulfur is 32. 065g/mol.

By putting values,

Number of moles = 5 g/ 32.06 g/mol

Number of moles = 0.153 mol

Answer:

Diphosphorus tetraiodide

Explanation:

Diphosphorus tetraiodide is an orange crystalline solid with the formula P2I4. It has been used as a reducing agent in organic chemistry. It is a rare example of a compound with phosphorus in the +2 oxidation state, and can be classified as a subhalide of phosphorus.

Can I please have brainliest?

The name of the molecular compound with the formula [tex]\rm P_2I_4[/tex] is diphosphorus tetraiodide.

The term "compound" refers to two or more elements joined together such that the elements have lost their individual identity in favor of a new set of properties.

The given molecular compound  [tex]\rm P_2I_4[/tex] is diphosphorus tetraiodide.

Therefore, diphosphorus tetraiodide is the name of the molecular compound with the formula  [tex]\rm P_2I_4[/tex] .

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Answer:

Yes, it's a hexagon, specifically a non-convex hexagon on account of having a concave angle. There's no specific official name that I'm aware of. "L-shaped hexagon" might actually be sufficient.

Explanation:

One answer is a right-angled concave hexagon, but you do need to cite some context. – Andrew Leach♦ Sep 8 '15 at 9:53. Well... since the Greek letters "gamma" and "lambda" are shaped roughly like the letter "L," you might call it "gammoid" or "lambdoid." I just invented these words.

Answer:

See explanation

Explanation:

7) P1 =3.3 atm

V1= 15 litres

T1 = 299 K

T2 = 350 K

P2 =  1050 mmHg/760 = 1.38 atm

V2?

From;

P1V1/T1 = P2V2/T2

P1V1T2 = P2V2T1

V2 = P1V1T2/P2T1

V2 = 3.3 * 15 * 350/1.38 * 299

V2 = 17325/412.62

V2 = 42 litres

8) V1= unknown

T1= 115 K

P1 = 60 atm

T2= 225 K

P2 = 30 atm

V2 = 25 litres

From;

P1V1/T1 = P2V2/T2

P1V1T2 = P2V2T1

V1 = P2V2T1/P1T2

V1 = 30 * 25 * 115/ 60 * 225

V1 = 86250/13500

V1 = 6.4 litres

9) T1 = 14 + 273 = 287 K

V1 = 5.5 liters

T2 = 29 + 273 = 302 K

V2 = the unknown

From Charles law;

V1/T1 = V2/T2

V1T2 = V2T1

V2 =V1T2/T1

V2 = 5.5 * 302/ 287

V2 = 5.8 litres

10) V1= 28 litres

T1= 65 + 273 = 338 K

P1 = the unknown

V2 = 36 liters

T2 = 35 + 273 = 308 K

P2 = 2 atm

P1V1/T1 = P2V2/T2

P1V1T2 = P2V2T1

P1 = P2V2T1/V1T2

P1 = 2 * 36 * 338/ 28 * 308

P1 = 24336/8624

P1 = 2.82 atm

Answer:

[tex]-121.56\ \text{J}[/tex]

Explanation:

[tex]V_1[/tex] = Initial volume = 0.2 L

[tex]V_2[/tex] = Final volume = 0.6 L

P = Pressure = 3 atm

[tex]W=-P\Delta V\\\Rightarrow W=-3(V_2-V_1)\\\Rightarrow W=-3(0.6-0.2)\\\Rightarrow W=-1.2\ \text{L atm}[/tex]

[tex]1\ \text{L atm}=101.3\ \text{J}\\\Rightarrow -1.2\ \text{L atm}=-1.2\times 101.3\ \text{J}=-121.56\ \text{J}[/tex]

Work done is [tex]-121.56\ \text{J}[/tex].

Answer:

O CaCl₂

Explanation:

The compound most likely to contain an ionic bond is CaCl₂ because it is the only specie with a metal and non-metal.

The metal here is Ca and non-metal is Cl.

Answer:

The correct answer is option e, that is, 1.65 * 10^-2.

Explanation:

Based on the given information, the weight of NaI given is 74.2 grams and the weight of water given is 527 grams.

The final volume of the solution given is 566 ml.

The formula to calculate the moles is weight/molecular mass,

The moles of NaI will be,

= 74.2/150 = 0.494

Now moles of water will be,

= 527/18 = 29.3

The mole fraction of NaI will be,

= 0.494 / (0.494 + 29.3)

= 0.0165 or 1.65 * 10^-2

Hence, the mole fraction of NaI is 1.65 * 10^-2

Answer:

Most likely:

[tex]{\rm 2\, A}\, (g) + {\rm B}\, (g) \to 4\, {\rm C}\, (g)[/tex] (the first choice.)

[tex]2\, {\rm A}\, (g) + {\rm B}\, (s) \to 3\, {\rm C}\, (g)[/tex] (the fourth choice.)

Explanation:

[tex]\Delta S_\text{rxn}[/tex] denotes the entropy change in a reaction.

The value of [tex]\Delta S_\text{rxn}[/tex] is greater than zero if the reaction corresponds to an increase in entropy. In other words, entropy should be higher for the products of this reaction than for its reactants.

The exact entropy of each species depends on both the environment (temperature, pressure, etc.) and on the structure of the species. However, there are some general trends.

Consider one mole of some gaseous molecules and one mole of some solid particles. If that gas and that solid are under the same temperature and pressure, which one would have a higher entropy? Generally, the gas would have a higher entropy.

Also, the entropy of a gas is approximately proportional to the number of particles in that gas.

Therefore, it is likely that [tex]\Delta S_\text{rxn}[/tex] would be positive for a reaction if there are more gas particles among the products than among the reactants.

Note that [tex](s)[/tex] is the state symbol for solids, whereas [tex](g)[/tex] is the state symbol for gases.

In this question:

First reaction: [tex]{\rm 2\, A}\, (g) + {\rm B}\, (g) \to 4\, {\rm C}\, (g)[/tex].

In each unit of this reaction, there are:

Second reaction: [tex]{\rm 2\, A}\, (g) + 3\, {\rm B}\, (g) \to 4\, {\rm C}\, (g)[/tex].

In each reaction, there are:

Third reaction: [tex]{\rm A}\, (s) + 2\, {\rm B}\, (g) \to {\rm C}\, (g)[/tex].

In each reaction, there are:

Fourth reaction: [tex]{\rm 2\, A}\, (g) + {\rm B}\, (s) \to 3\, {\rm C}\, (g)[/tex].

In each unit of this reaction, there are:

Answer:

BaCl₂ and H₂SO₄

Explanation:

The reaction is the precipitation of BaSO₄ from solution.

This means that our reactants must contain the Ba ion and SO₄²⁻ ion.  The reactants that meet this criteria are the; BaCl₂ aand H₂SO₄

The reaction is given as;

BaCl₂ + H₂SO₄ --> BaSO₄ + 2HCl

Answer:

i got you stop doing work  and forget about this one class you will still pass trust me i did it it 8th grade and still made it to 9th but today im not even in school so just do better in your other classes

Explanation:

Answer:

b. Van der Waals

Explanation:

Non-bonding intermolecular interaction is simply the same as intermolecular forces between molecules.

One such example from the given choice is the van der waals forces.

Answer:

51 L

Explanation:

Step 1: Given data

Step 2: Calculate the final volume of nitrogen

The volume of a gas is inversely proportional to the pressure. If we consider nitrogen as an ideal gas at a constant temperature, we can find the final volume using Boyle's law.

P₁ × V₁ = P₂ × V₂

V₂ = P₁ × V₁ / P₂

V₂ = 90 kPa × 22.5 L / 40 kPa

V₂ = 51 L

Answer:

T₂  = 550.60 K

Explanation:

Given data:

Initial temperature = 16.3°C (16.3+273 = 289.3 K)

Initial pressure = 9.30 atm

Final temperature = ?

Final pressure = 17.7 atm

Solution:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

9.30 atm / 289.3 K = 17.7 atm/T₂

T₂ =  17.7 atm × 289.3  K / 9.30 atm

T₂  = 5120.61 atm. K /9.30 atm

T₂  = 550.60 K

Answer:

P₂ = 112.17 KPa

Explanation:

Given data:

Initial pressure = 116 KPa

Initial temperature = 303 K

Final temperature = 293 L

Final pressure = ?

Volume=  constant

Solution:

According to Gay-Lussac Law,

The pressure of given amount of a gas is directly proportional to its temperature at constant volume and number of moles.

Mathematical relationship:

P₁/T₁ = P₂/T₂

Now we will put the values in formula:

116 KPa / 303 K = P₂/293 K

P₂ = 116 KPa × 293 K  / 303 K

P₂ = 33988 KPa. K / 303 K

P₂ = 112.17 KPa

Answer:

d = 8.96 g/cm³

Explanation:

Given data:

Volume of sample = 10.0 cm³

Mass of copper = 89.6 g

Density of copper = ?

Solution:

Density:

Density is equal to the mass of substance divided by its volume.

Units:

SI unit of density is Kg/m3.

Other units are given below,

g/cm3, g/mL , kg/L

Formula:

D=m/v

D= density

m=mass

V=volume

d = 89.6 g/ 10.0 cm³

d = 8.96 g/cm³

Metal acts as a catalyst in catalytic converters

Answer:

CO2

Explanation:

took the test

Answer:

Co2

Explanation:

Answer:

6moles of water

Explanation:

Given parameters:

Number of moles of oxygen  = 3moles

  Reaction equation:

      2H₂   +   O₂   →   2H₂O

Unknown:

Number of moles of water formed  = ?

Solution:

To solve this problem;

      compare the number of moles in the reaction.

        1 mole of oxygen gas will produce 2 mole of water

        3 moles of oxygen gas will produce 3 x 2  = 6moles of water.

Answer:

1

Explanation:

Answer:

0.45 g

Explanation:

All the elements such as carbon, oxygen, and hydrogen found in ethanol but when they are seperated from ethanol they have totally different compound. They are pure element and ethanol is a mixture.

Ethanol is a colourless liquid which catches fire easily and it is produced by the process of natural fermentation of sugars or alcohol.

The chemical formula of ethanol is C2H5OH, molar mass is 46.07 g/mol and its boiling point is 78.37 °C with density 789 kg/m cube.

Ethanol is also known as alcohol which is colourless and slightly toxic chemical compound and ethanol forms water as well as carbon dioxide.Ethanol is a colourless liquid which catches fire easily and it is produced by the process of natural fermentation of sugars or alcohol.

Therefore, All the elements such as carbon, oxygen, and hydrogen found in ethanol but when they are seperated from ethanol they have totally different compound. They are pure element and ethanol is a mixture.

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Answer:

The kinetic energy increases

Explanation:

As a metal such as lead is heated past its melting point, the average kinetic energy of the atoms increases.

When temperature is increased the kinetic energy of the atoms increase which also increases the random movement of the atoms.

When such happens the distance between the atoms is usually decreased which leads to the elastic collision that occurs.

Answer:

The answer is D

Explanation:

for a p e x

The ideal gas law describes the behavior of gases under ideal conditions.

It is a law that explains that an ideal gas is considered as part of the group of theoretical gases because it is composed of point particles that move randomly and do not interact with each other.

According to classical thermodynamics, this law is a formula that allows us to relate the properties of gases, such as pressure, the volume occupied by the gas and its temperature.

Therefore, we can conclude that the ideal gas law describes the behavior of gases under ideal conditions.

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Answer:

Work is done when a force that is applied to an object moves that object. The work is calculated by multiplying the force by the amount of movement of an object (W = F * d). A force of 10 newtons, that moves an object 3 meters, does 30 n-m of work. ... You have to exert a force AND move something to qualify as doing work.

Explanation:

Answer:

a

Explanation:

Answer:

True

Explanation:

as electronegativity difference increases, bond length decreases. when a metal gains an electron, the process is endothermic. ... atoms surrounded by 7 valence electrons tend to lose electrons

Answer:

71.7 g of C₆H₅Br are produced at the theoretical yield.

Explanation:

The reaction is:

C₆H₆ + B₂ → C₆H₅Br + HBr

This is an easy excersie, stoichiometry is 1:1

We determine moles of reactants:

42.1 g / 78g/mol = 0.540 moles of benzene

73 g / 159.80 g/mol = 0.457 moles of hydrogen bromide

Certainly, the HBr is the limiting reactant, because I need 0.540 moles of HBr for 0.540 moles of benzene and I only have, 0.457 moles.

0.457 moles of HBr will produce 0.457 of bromobenzene, at the 100 % yield reaction (theoretical yield)

We convert the moles to mass: 0.457 g . 157 g/mol = 71.7 g  

The theoretical yield of the reaction has been 0.457 mol.

The balanced chemical equation for the reaction can be given by:

[tex]\rm C_6H_6\;+\;Br_2\;\rightarrow\;C_6H_5Br\;+\;HBr[/tex]

Accordingly, 1 mole of benzene will give 1 mole of Bromobenzene and 1 mole of Hydrobromide.

The moles can be calculated as;

Moles = [tex]\rm \dfrac{weight}{molecular\;weight}[/tex]

Moles in 42.1 grams Benzene:

Moles of Benzene = [tex]\rm \dfrac{42.1}{78}[/tex]

Moles of Benzene = 0.540 mol

Moles of Bromine = [tex]\rm \dfrac{73}{159.80}[/tex]

Moles of Bromine = 0.457 mol.

The limiting reactant in the reaction has been the one that has been present in the lesser quantity as the other reactant to continue to the product formation.

The 1 mole of Benzene requires 1 mole of bromine. So, 0.54 mol of benzene requires. 0.54 mol of bromine. Since the available bromine has been 0.457 mol, Bromine has been the limiting reactant.

The theoretical yield of the reaction will be based on the concentration of Bromine.

Thus, 1 mol of Bromine forms 1 mol of Bromobenzene.

0.457 mol of Bromine will form 0.457 mol of bromobenzene.

The theoretical yield of the reaction has been 0.457 mol.

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Answer:

150 gs for me aww thanks

Explanation:

Answer:

D) The air molecules that are surrounding the metal will speed up, and the molecules in the metal will slow down.

Explanation:

Edg