I need help please???

Answer:

Wavelengths..

Explanation:

The colors we see always go from red, which is least refracted, through orange, yellow, green, blue, indigo and violet -- Roy G Biv. The blue, indigo and violet wavelengths are refracted the most as sunlight passes through raindrops.

Answer:

1, 2, 2, 1

Explanation:

This is basically the equation we're trying to balance:

Cu + AgNO₃ → Ag + Cu(NO₃)₂

We start with Copper (Cu): There is 1 atom on the reactants'(left) side and 1 atom on the products'(right) side which means it's balanced

The second is Silver (Ag): There is 1 atom on the reactants' side and 1 atom on the products' side which means it's balanced

The third is Nitrogen (N) and there is 1 atom on the reactants' side and 2 atoms on the products' side. We balance it by multiplying the reactants' side by 2

Cu + 2AgNO₃ → Ag + Cu(NO₃)₂

Silver is now imbalanced so we multiply the silver atoms on the product's side by 2

Cu + 2AgNO₃ → 2Ag + Cu(NO₃)₂

If you count them now, the atoms on each side are the same number

1 Copper atom on each side

2 Silver atoms on each side

2 Nitrogen atoms on each side

6 Oxygen atoms on each side (2 sets of 3 oxygen atoms)

1Cu + 2AgNO₃ → 2Ag + 1Cu(NO₃)₂

Answer:

b

Explanation:

Answer:

The answer is B

Explanation:

Mass of KMnO4 required : 31.607 g

The reaction equation is the chemical formula of reagents and product substances  

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products  

Reaction

2KMnO₄ → K₂MnO₄ + MnO₂ + O₂

mol of O₂ :

[tex]\tt \dfrac{1.6}{16}=0.1[/tex]

mol ratio KMnO₄ : O₂ = 2 : 1

mol of KMnO₄ :

[tex]\tt \dfrac{2}{1}\times 0.1=0.2[/tex]

mass of KMnO₄ :

MW KMnO₄ : 158,034 g/mol

[tex]\tt mass=0.2\times 158,034 =31.607~g[/tex]

Answer:

i think it is B

Explanation:

His cells use oxygen to break down food molecules to release energy.

Answer: Thomson

Explanation: During the 1880s and '90s scientists searched cathode rays for the carrier of the electrical properties in matter. Their work culminated in the discovery by English physicist J.J. Thomson of the electron in 1897.

Answer:

The match between the vibrations of the air column and one of the natural frequencies of the singing rod causes resonance. So ITS A  

Two nearby objects vibrating at the same frequency

Explanation:

Answer:

The polyatomic cation that will react with MnO₄⁻ to form a neutral compound is NH₄⁺ (ammonium ion) to form NH₄MnO₄ (Ammonium permanganate).

Answer:a

Explanation:

Answer:

C

Explanation:

One must be willing to self disclose for them to self disclose.

Answer:

The Definition of Differentiation

The derivative is the instantaneous rate of change of a function with respect to one of its variables. This is equivalent to finding the slope of the tangent line to the function at a point

Explanation:

The bouncing back of light waves observed when light waves hit ice and most of them bounce off and radiate back into space is called reflection.

Light waves are a form of waves which produces visible sensitization of the eyes

Light waves have properties of waves such as:

When light waves hit ice, most of them bounce off and radiate back into space.

This property of light waves is known as reflection.

Learn more about reflection of light waves at: https://brainly.com/question/1191238

When light waves hit ice, most of them bounce off and radiate back into space, hence, ice is best described as a reflective surface.

A reflective surface is one which can cause incident light to bounce back (reflection).

According to this question, when light waves hit ice, most of them bounce off and radiate back into space. This means that most of the incident light reflects off the ice surface.

Therefore, the ice surface is best described as a reflective surface.

Learn more about reflection at: https://brainly.com/question/8553652

Answer:

losses a single valence electron to the fluorine atom, which has just enough space to accept it.

- Lumen Learning

It's the last one. They all have the same number of electrons in their outer ring. They're also called valence electrons.

Hope this helped!

Answer:

A. is the correct answer because Boron has 3 electrons too,

All elements in Group 13 have three electrons in their outermost energy level. The two most popular elements in this group are Boron and Aluminum.

Answer:

Explanation:

Milk and starch solution are example of colloidal solution and we know that Tyndall effect is shown by colloids.

Fluorine

Explanation:

F- has the lowest ionisation energy

Total number of atoms = 5

The formula of a compound shows the composition of the constituent elements

CaCO₃ is composed of 3 types of atoms, namely Ca, C and O

The amounts of each of these atoms in the compound CaCO₃:

Then total number of atoms :

[tex]\tt 1+1+3=5[/tex]

The conjugate acid of CIO⁻ is HClO. Hence, Option (D) is correct.

A conjugate acid, within the Brønsted–Lowry acid–base theory, is a chemical compound formed when an acid donates a proton to a base.

In other words, it is a base with a hydrogen ion added to it, as in the reverse reaction it loses a hydrogen ion.

Therefore, The conjugate acid of CIO⁻ is HClO. Hence, Option (D) is correct.

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Answer:

hmm

Explanation:

let me think

Answer:

speed of sound, frequency and wavelength

Answer:

Diversity?

Explanation:

Think thats bio

Answer: 2. Bonds and bond energies of the molecule

Explanation:

The absorption spectrum is an electromagnetic spectrum which is used for observing the intensity of the radiations which have been absorbed by the substances shown by the pattern of dark lines or bands. Infrared and microwave spectroscopy are specialized techniques which are used for observing the bonds and bond energy of the molecules which can be observed by measuring the frequencies at which the radiations are absorbed.

Answer:

V₂ = 300  cm³

Explanation:

Given data:

Initial pressure = 302 KPa

Initial volume = 600 cm³

Final pressure = 604 KPa

Final volume = ?

Solution:

The given problem will be solved through the Boly's law,

"The volume of given amount of gas is inversely proportional to its pressure by keeping the temperature and number of moles constant"

Mathematical expression:

P₁V₁ = P₂V₂

P₁ = Initial pressure

V₁ = initial volume

P₂ = final pressure

V₂ = final volume  

Now we will put the values in formula,

P₁V₁ = P₂V₂

302 KPa × 600 cm³ = 604 KPa× V₂

V₂ = 181200 KPa.cm³ / 604 KPa

V₂ = 300  cm³

Answer:

Exosphere

Explanation:

it is found at the end reaching outer space

According to the electronic configuration, properties which are most common in non-metals are high ionization energies, high electronegativity and poor conductors of heat and electricity.

Electronic configuration is defined as the distribution of electrons which are present in an atom or molecule in atomic or molecular orbitals.It describes how each electron moves independently in an orbital.

Knowledge of electronic configuration is necessary for understanding the structure of periodic table.It helps in understanding the chemical properties of elements.

Elements undergo chemical reactions in order to achieve stability. Main group elements obey the octet rule in their electronic configuration while the transition elements follow the 18 electron rule. Noble elements have valence shell complete in ground state and hence are said to be stable.

Learn more about electronic configuration,here:

https://brainly.com/question/13497372

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Answer:

The heavy particles move across the chamber because of the diffusion property of gas particles. The particles move in straight lines and change directions only when they collide with other molecules or the walls of the chamber.

Explanation: