What trait of a wave is described by its wavelength?
O
A. The speed and direction that the wave is traveling
B. The distance from one wave peak to the next wave peak
C. The distance from the peak to the bottom of a wave
ОО
D. The number of waves that pass a point in 1 second

Help plisss!!!

Answer: During a phase change, such as melting or boiling, the kinetic energy increases.

Explanation:

Kinetic energy is the energy obtained by the molecules of a substance due to their motion.

When phase change such as melting or boiling takes place then it means heat is absorbed by the substance. As a result, their molecules more even more rapidly from one place to another due to which more number of collisions take place.

Hence, a change in phase of substance occurs as kinetic energy increases in melting or boiling process.

Thus, we can conclude that during a phase change, such as melting or boiling, the kinetic energy increases.

Answer:

In a molecular formula, it states the total number of atoms of each element in a molecule.

Explanation:

Answer: Electricity

Answer:

J.J Thomas in 1897

Answer:

the answer is

Explanation:

number of mollecoles

In chemistry a coefficient denotes the number that is seen in front of the formula of a equation. The coefficient in the given equation 4CO₂ is 4.

A number which precedes the formulas of reactants and products in order to balance a chemical equation is defined as a coefficient. It represents the number of atoms or molecules of each elements which are present in the reaction.

A chemical equation should be balanced and it must obey the law of conservation of mass which states that the number of reactants and products on both sides of the equation should be equal.

The coefficients are the numbers which are required to balance a chemical equation and it may vary while balancing a equation. The coefficient is found to be 1 if no number is mentioned in front of the formula of the reactants and products.

In the given equation 4CO₂, 4 is the coefficient which shows that 4 'C' atoms and 8 'O' atoms are present in the compound CO₂.

Thus the coefficient in the compound 4CO₂ is 4.

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Answer:

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Answer:

1) 90.0 mL

2) 11.25 M

3) 0.477 M

4) 144 mL

Explanation:

The main formula that will be used for all these calculations is:

                                                     C₁V₁ = C₂V₂

C stands for concentration and V stands for volume and the subscripts 1 and 2 indicate an initial concentration or volume and a final concentration or volume.

For each problem, it's best to start by figuring out what you have and what you need to find. Figure out if you're looking for an initial value or a final value.

1) We need to find the initial volume. So, take what values you have and plug them in and then solve for whatever variable:

5.00 M · V₁ = 500.0mL · 0.900 M                        - divide by 5.00

C₁ = 90.0 mL

2) This time we're finding the initial concentration:

20.0mL · C₁ = 150.0mL · 1.50 M                          - divide by 20.0mL

C₂ = 11.25 M

3) Now we're finding the final concentration:

12.00mL · 3.50 M = 88.0mL · C₂                         - divide by 88.0mL

C₂ = 0.477 M

4) Finally, we're looking for the final volume:

9.0mL · 8.0 M = 0.50 M · V₂                                - divide by 0.50 M

V₂ = 144mL

Answer:

its B

Explanation:

I took the test and its that passage way thing. (tell me if this works for you! it will but just wanna make sure!)

Explanation:

A cell is the membrane unit that contains all the fundamental molecules to living life. To make it short nd easy, a cell is the smallest nd basic unit of life, it's responsible for all life's processes. The human body is comped of m(tr)illions of cells, they all each provide different types of functions.

Answer:

get what right?

Answer:

You didn't post the question.

Explanation:

Edit your question and I'll try to help you.

Hope this helped? Lol.

Answer:

19ml

Explanation:

trust me

Answer:I’m 100% it’s the second one

Explanation:

I have done it before and missed one but not this question

Answer:

Matter is never created or destroyed

Answer:

The Sun

Explanation:

Solar power is energy from the sun that is converted into thermal or electrical energy.

Answer:

The sun

Explanation:

The sun is the main source of solar energy.

Answer:

- One mole of oxygen was used in this reaction.

- Two moles of water were produced from this reaction.

Explanation:

In addition: - Two moles of hydrogen were used.

Given the data from the question, the correct statement is:

To know which options are correct, we shall determine the number of mole of O₂ used and the number of mole of H₂O produced.

Balanced equation

2H₂ + O₂ —> 2H₂O

From the balanced equation above,

2 moles of H₂ required 1 mole of O₂

Therefore,

1 mole of H₂ will require = 1 / 2 = 0.5 mole of O₂

Thus, 0.5 mole of O₂ is needed for the reaction

From the balanced equation above,

2 moles of H₂ reacted to produce 2 moles of H₂O

Therefore,

1 mole of H₂ will also react to to produce 1 mole of H₂O

Thus, 1 mole of H₂O was produced from the reaction.

SUMMARY

When 1 mole of H₂ was used in the reaction,

Considering the options given in the question above, the correct statement is:

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Answer:

D. The energy level of the electron.

Explanation:

There are four quantum numbers which are used to describe the movement and paths or positon of each electron within an atom. Quantum numbers can be used to determine the electronic configuration of atoms and the most likely location of the atom's electrons. Quantum numbers are also used in determining other characteristics of atoms, such as ionization energy and the atomic radius.

The four quantum numbers are namely, principal, azimuthal, magnetic and spin quantum numbers.

Principal quantum numbers are denoted by the symbol ‘n’. They describe the principal electron shell or energy level the atom.The value of the principal quantum number are positive integer values that is equal to or greater than one. The value n = 1 represents the innermost electron shell of an atom, which corresponds to the lowest energy state of an electron. The larger the values of 'n' the greater the energy level and the farther the electron is from the nucleus.

Answer:

b

Explanation:

i took the quiz

Answer:

the ability to breed successfully

Explanation:

Answer:

the ability to breed successfully

Explanation:

the more offspring's an organism has, the less chance of extinction would happen. I hope that helped bestie

Answer:

D

Explanation:

Answer:

Conductors

Explanation:

The required molecule is :

=》option B.) C2H4O2

it has 2 carbon atoms, 4 hydrogen atoms which it twice the number of carbon atoms and 2 oxygen atoms same as carbon.

Answer:

cuatro

Explanation:

ino->4

Alkynes are triple bonded hydrocarbons. There are 7 hydrogen in an alkyne with 5 carbon atoms. This compound can be named as pentyne.

Alkynes are hydrocarbons with one triple bond between two carbon atoms. alkynes are unsaturated compounds. Alkynes are named with the suffix 'yne' like ethyne, propyne etc..

There are three types of hydrocarbons namely, alkanes, alkenes and alkynes. Alkanes are saturated hydrocarbon having single bond between carbon atoms. Eg. methane , ethane etc all having suffix of 'ane'. Alkenes are unsaturated hydrocarbons with double bond between two or more carbon atoms.

Alkenes are named with the suffix 'ene'. Hence, the names become ethene, propene etc. The prefix for the names of hydrocarbons is based on the number of carbons. meth for 2, eth for 2 prop for 3, but for 4 and pent for 5 and so on.

The valency of carbon is 4 and it will bind to four other atoms. When it forms triple bond with a carbon it can bind to one hydrogen only. If it is a middle carbon then it dont have a hydrogen since either side will be carbons.

Thus for a 5 carbon alkyne, there will be total 7 hydrogens and the compound is pentyne.

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Answer:

Chemical reactions list reactants and products in molar amounts, not just molecular amounts. We can use the coefficients of a balanced chemical equation to relate moles of one substance in the reaction to moles of other substances

Explanation:

Answer:

2Li + 2H2O → 2LiOH + H2

Explanation:

Lithium + Water = Lithium Hydroxide + Dihydrogen

Answer:

A liquid-fueled rocket has two liquids (liquids are good because of the density, they need less space than a gas to be stored), such that these liquids are called the fuel and the oxidizer.

These liquids are injected into a system that leads to a combustion chamber, where the liquids are mixed (we need to mix the fuel with the oxidizer to enable the combustion of the fuel) and burned to produce thrust.

Some common examples of oxidizers are liquid oxygen, which may be combined with fuels like liquid hydrogen, liquid methane, kerosene and hydrazine.

Other oxidizers are liquid fluorine (which also can be combined with the fuels liquid hydrogen and hydrazine), nitrogen tetroxide (which can be combined whit kerosene, hydrazine and other fuels) and FLOX-70, which can only be combined with kerosene.

The "most commonly used" may depend on the country and the type of liquid propellant ( petroleum, cryogens, and hypergols)

Such that the most common oxidizer may be liquid oxygen, and the most common fuel the kerosene.

Answer:

2.8l

Explanation:

just make v2 de subject

You haven't added the 4 questions, so when you upload them, i'll answer.

Answer: FALSE

Explanation: