What is the motion of the particles in this kind of wave?

A hand holds the left end of a set of waves. The waves themselves make a larger set of waves in the same direction as that of the smaller waves. A label Wave motion is above the series of waves and an arrow next to the label points right.

The particles will move up and down over large areas.
The particles will move up and down over small areas.
The particles will move side to side over small areas.
The particles will move side to side over large areas.

Explanation:

Molar mass of Cu = 63.5g/mol

Moles of Cu

= 5.8g / (63.5g/mol) = 0.091mol (B)

The number of moles present in a 5.8 g sample of copper is equal to 0.0913 mol. Therefore, option B is correct.

A mole can be defined as an international scientific unit that is used to determine for given count of particles. The particles are commonly identical entities but they are individually distinct.

A mole of the substance can be used to evaluate a large number of atoms, molecules, or particular particles. The amount of material can be measured as chemical entities of a substance in a sample.

The number of units in 1 mole of a material is equal to 6.023×10²³ which is called Avogadro’s constant.

Given,  the mass of the copper = 5.8 g

The mass of one mole of copper = 63.5 g

We can calculate moles as, n = Mass/molar mass

Then, the number of moles of copper = 5.8/63.5 = 0.0913 mol

Therefore, the number of moles of copper is 0.0913 mol.

Learn more about the mole, here:

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Answer:

b

Explanation:

Both ionic and covalent bonds when it has dissolved into water it will become ionic compound but when it was in gas situation it was covalent compound.

Diatomic elements have to atoms of the element in a molecule.

Diatomic elements are those elements whose atoms combine together to form molecules of the element. The elements that are diatomic in the list are;

Hence, diatomic elements have to atoms of the element in a molecule.

Learn more about diatomic molecules: https://brainly.com/question/4979095

You can make 14 L of Ammonia

Avogadro's hypothesis:  

In the same T,P and V, the gas contains the same number of molecules  

So the ratio of gas volume will be equal to the ratio of gas moles  

[tex]\tt \dfrac{V_1}{n_1}=\dfrac{V_2}{n_2}[/tex]  

Reaction

N₂+3H₂⇒2NH₃

Volume of Nitrogen-N₂ : V₁=7 L

From the equation above, mol ratio of N₂ : NH₃ =1 : 2, so volume of NH₃ :

[tex]\tt \dfrac{7}{1}=\dfrac{V_2}{2}\\\\V_2=\boxed{\bold{14~L}}[/tex]

Answer:

0.00000000910938;

9.109380 * 10^-9

Explanation:

Given the question :

Given :

1.602176*10-¹⁹/ 1.758820*10¹¹

The numbers are expressed in the form:

A * 10^b ; Where;

A = Coefficient ; 10 = base ; b = exponent

The Coefficients can be divided directly as :

1.602176 / 1.758820 = 0.9109380

Using the division law of indices, the exponents acn be worked out as follows since they have the same base :

10^-19 / 10^-11 = 10^(-19 - (-11)) = 10^(-19+11) = 10^-8

Thus, we have ;

0.9109380 × 10^-8

In standard form:

9.109380 * 10^-9

In Expanded form:

10^-8 = 0.00000001

0.9109380 * 0.00000001 = 0.00000000910938

0.000000009 +

0.0000000001 +

0.00000000000 +

0.000000000009 +

0.0000000000003 +

0.00000000000008

__________________

0.00000000910938

___________________

Answer:

A highly positive ion was attracted to a membrane and their locations is explained in details.

Explanation:

1.

The Head of a lipid is hydrophilic (polar). This cover can be bearing negative or positive charges. This is that charge that creates the head hydrophilic(communicate with water(a polar molecule, including negative and positive unfair charges).

The tail is hydrophobic (non-polar). This part doesn't include any charge that enhances hydrophobic. (Does not combine with water.

Now a positive ion can be brought only to electron-rich stations. We cannot say that this situation is forever the hydrophilic part.

A dual bond is an electron-rich situation. So the ion will be drawn to the dual bond place of a lipid.

2.

A conveyor that needs energy is active transport.

3.

The use of a membrane is to stop the particles and ions from passing crosswise it openly. So through the membrane, in an active carrier, we require input energy to transfer molecules beyond it.

Answer:

B.

the process by which rocks are broken down into sediment

Answer:

Where is the grahppppp?!!!!

Answer: Temperature measures thermal energy, and heat is the flow of thermal energy

Explanation:

Heat describes the transfer of thermal energy between molecules within a system. Heat measures how energy moves or flows. It is measured in Joules.

Temperature measures the hotmess or coldness of a body or how much thermal energy it contains . Temperature describes the average kinetic energy of molecules within a material or system. It is measured in Celsius (°C), Kelvin(K), or Fahrenheit (°F).

Thus the correct option is Temperature measures thermal energy, and heat is the flow of thermal energy

Answer:

its c

Explanation:

edg 2021

Answer:

Percent yield = 87.5%

Explanation:

Given data:

Number of moles of Fe(NO₃)₃ = 2.5 mol

Number of moles of Na₂CO₃ = 3.6 mol

Actual yield of NaNO₃ = 6.3 mol

Percent yield of NaNO₃ = ?

Solution:

Chemical equation:

2Fe(NO₃)₃ + 3Na₂CO₃        →     Fe₂(CO₃)₃ + 6NaNO₃

now we will compare the moles of both reactant with NaNO₃.

                   Fe(NO₃)₃          :              NaNO₃

                       2                   :                  6

                     2.5                  :            6/2×2.5 = 7.5

                  Na₂CO₃             :              NaNO₃

                       3                   :                  6

                     3.6                  :            6/3×3.6 = 7.2

Theoretical yield of NaNO₃ is 7.2 mol.

Percent yield:

Percent yield = actual yield / theoretical yield ×100

Percent yield = 6.3 mol / 7.2mol ×100

Percent yield = 87.5%

Answer:

121

Explanation:

add 1+120 to get answer

Answer:

Gas Bubbles Appear. Gas bubbles appear after a chemical reaction has occurred and the mixture becomes saturated with gas.

Formation of a Precipitate.

Color Change.

Temperature Change.

Production of Light.

Volume Change.

Change in Smell or Taste.

Answer:

A

Explanation:

Answer:

think it is D

Explanation:

hope this helps

Answer:

Lymphocytes

Explanation:

Pathogens are particles that make you sick like bacteria, viruses, amoebas. Water is essential for life but that's for metabolism, not fighting off against infection or viruses.

Answer:

Lymphocytes

Explanation:

lymphocytes are a kind of white blood cell (WBC). Lymphocytes are cells of the immune system and help fight infection. Lymphocytes live in lymph nodes, but also in the bloodstream and all over the body. Lymphocytes come in two main types: B-cells and T-cells

Where as water is totally not white blood cells and pathogens are viruses and bacterium

Answer:  e. -2 and +1

Explanation:

Oxidation number or oxidation state : It represent the number of electrons lost or gained by the atoms of an element in a compound.

Oxidation reaction is defined as the reaction in which a substance looses its electrons. The oxidation number of the substance increases.

Reduction reaction is defined as the reaction in which a substance gains electrons. The oxidation number of the substance gets reduced.

 [tex]Ca(s)+H_2(g)\rightarrow CaH_2[/tex]

The oxidation number of calcium (Ca) in free state is 0 and in [tex]CaH_2[/tex] , it is -2.

The oxidation number of hydrogen in [tex]H_2[/tex] is zero and oxidation number of hydrogen in [tex]CaH_2[/tex]  is +1 as in hydrides hydrogen loses electrons.

The oxidation number of calcium has been +2, and the oxidation number of hydrogen has been -1. Thus, the correct option is A.

The oxidation number can be defined as the number of electrons that have been lost by an atom in a chemical reaction.

The oxidation number can be calculated as the:

The oxidation number of Hydrogen when it combines with the less electronegative element has been -1.

There have been 2 atoms of Hydrogen that lose an electron, thus the total oxidation contribution of hydrogen has been -2.

The oxidation number of hydrogen has been -1.

The oxidation number of Calcium has been:

Ca atom has taken an electron from the hydrogen.

[tex]\rm Ca\;+\;e^-\;\rightarrow\;Ca^-[/tex]

The calcium takes one electron from each atom bonded. Thus the oxidation number of calcium has been +2.

The oxidation number of calcium has been +2, and the oxidation number of hydrogen has been -1. Thus, the correct option is A.

For more information about oxidation numbers, refer to the link:

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Answer:

52 g H2O (to 2 significant figures)

Explanation:

I hope you like my answer:)

Can you mark me as brainliest please

Answer:

3. 2.00 L of air at 100°C has twice the pressure of the same 2.00 L of air at  50°C

Explanation:

1)  doubling the pressure of a gas doubles its volume

This is incorrect because by increasing the pressure volume is going to be decreased.

2)  2.00 L of air at 227°C has twice the pressure of the same 2.00 L of air at  23°C

This is also incorrect because 2 L air at 227 °C will have the pressure more than twice time as compared to the 2L air at 23°C.

3. 2.00 L of air at 100°C has twice the pressure of the same 2.00 L of air at  50°C

This is correct;

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

thus, by increasing the temperature pressure is also goes to increase in the same ratio.

4. halving the pressure of a gas halves its volume

This is incorrect because halving the pressure of gas increasing its volume.

Answer:

Light

Explanation:

1 They were not albe to see at night because it  was dark so the lack of light caused them to use echolocation.

Hope this helps

Answer:

disulfur heptoxide

Explanation:

Answer:

1)seismic 2) S-waves 3) outer core

Answer:the other comment is right

Explanation:

The mass of the Pbl2 : 1308.87

Given

18.2 mL of a 0.156 M Pb(NO3)2

26.2 mL of a 0.274 M KI

Reaction

Pb(NO3)2 (aq) + 2 KI (aq) - Pbl2 (s) + 2 KNO3

Required

the mass of the Pbl2

Solution

mol Pb(NO3)2 = 18.2 x 0.156 = 2.8392 mlmol

mol KI = 26.2 x 0.274 =7.1788 mol

Limiting reactant Pb(NO3)2(smaller ratio of mol : reaction coeffiecient)

mol Pbl2 based on limiting reactant (Pb(NO3)2)

From equation, mol ratio of Pb(NO3)2 : Pbl2 = 1 : 1, so mol Pbl2=mol Pb(NO3)2=2.8392

Mass Pb(NO3)2 :

[tex]\tt mass=mol\times MW\\\\mass=2.8392\times 461\\\\mass=1308.87~grams[/tex]

Answer:

0.05 M

Explanation:

Mass of benzoic acid= 0.158g

Volume of benzoic acid= 100 mL

Volume of sodium hydroxide = 27.84mL

Molar mass of benzoic acid= 122g/mol

Number of moles of benzoic acid= 0.158g/122g/mol= 1.3 × 10^-3 moles

C= no of moles/volume

C= 1.3 × 10^-3 moles × 1000/100

C= 0.013M

So;

Volume of acid VA = 100mL

Concentration of acid CA= 0.013M

Volume of Base VB = 27.84mL

Concentration of Base CB= ???

Number of moles of acid NA =1

Number of moles of Base NB= 1

From;

CAVA/CBVB= NA/NB

CAVANB= CBVBNA

CB= CAVANB/VBNA

CB= 0.013 × 100 × 1/27.84 × 1

CB= 0.05 M

Answer:

a) SN1/H2O

b) SN1/CH3OH

c)SN2/DMF

d)SN2/HMPA

Explanation:

The reactions are shown in the image attached.

Let me restate the basic facts about SN1 and SN2 reaction mechanisms. SN1 reaction occurs by unimolecular mechanism and involves a carbocation, a poor nucleophile and a polar protic solvent.

An SN2 reaction is a bimolecular synchronous reaction that passes through a single transition state. It requires a good nucleophile and a polar aprotic solvent.

For reaction a and b, we  observe that the alkyl halide is tertiary hence the reaction occurs by SN1 mechanism in the presence of a polar protic solvent.

Reactions c and d involves primary and secondary alkyl halides respectively and good nucleophiles. The best solvents to be used are polar aprotic solvents and the reaction follows SN2 mechanism.

Answer:

Wave 2

Explanation:

Higher frequency  means more energy per second, And wave 2 has higher frequesncy

please mark brainliest I’m almost at expert level

Answer:

I believe it is wave 2

Explanation:

As you can see in the graph, wave two happens to be more frequent. There are well, more waves than the first graph. Please forgive me if I am wrong. I tried my best to explain

Answer:

H20

Explanation:

Answer:

The answer is H20

Explanation:

Answer:

B6Br4

Explanation:

Chemical formula gives a representation of the number of atoms that each element in a compound or molecule. In this question which is asking to give the formula of hexaboron tetrabromide, the hexa means 6 while the tetra means four.

Since the number of atoms of each element is written as a prefix before the main element, this means that the chemical formula of hexaboron tetrabromide will be B6Br4.

Answer:

Filtrate: Mixture of salt and water.

Residue: rock pieces

Answer:

Salt solution will be the filtrate

and the rock pieces will be the residue.

Explanation:

This is because salt is soluble in water and hence

it cannot be filtered out of water giving as a salt solution as the filtrate and since the rock pieces are not soluble in water they are left out and they become the residue.

Answer:

D

Explanation:

pretty sure D

Answer:

the celery would change colour!

Explanation: