Which of the following is an example of a covalent compound? ​

The region in the IR spectrum could be used to distinguish between butanoic acid and 2-butanone is 2500-3300 cm^-1.

What is IR spectrum:

IR spectroscopy (which is short for infrared spectroscopy) deals with the infrared region of the electromagnetic spectrum, i.e. light having a longer wavelength and a lower frequency than visible light. Infrared Spectroscopy generally refers to the analysis of the interaction of a molecule with infrared light.

The IR spectroscopy concept can generally be analyzed in three ways: by measuring reflection, emission, and absorption. The major use of infrared spectroscopy is to determine the functional groups of molecules, relevant to both organic and inorganic chemistry.

Therefore,

For carboxylic acid, a broad peak for  -OH group is obtained in the region of 3000-2500 cm-1 in the IR spectrum. This is the distinguishing feature of -COOH or carboxylic group of butanoic acid and -CO or ketone of butanone. Both shows -CO or carbonyl peak in the region 1680-1750 cm-1, but the above mentioned distinguishes them.

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Answer:

The main difference between the heat of formation and heat of reaction is that heat of formation is the amount of energy either absorbed or released during the formation of a compound whereas heat of reaction is the amount of energy either absorbed or released during any chemical reaction.

Answer:

synthesis reactions

Explanation:

Just as synthesis reactions can only form one product, decomposition reactions can only start with one reactant

Answer:

This is because the material of which the football is made up of expands during the day due to hot summer where the particles of it try to move away from each other whereas at night due t less temperature the contract therefore the football feels softer as before

Answer:

The Answer is D: A star and orbiting planets

Explanation:

Not to be confused with the Big Bang theroy (which "explains" the origin of the universe)  The Neublar Theory explains the  formation of the solar system, which is bascially A star and orbiting planets.

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Answer:

25% XX

50% Xx

25% xx

Explanation:

see picture

Answer:

Your answer is B : 25% :)

Explanation:

B's correct on Edg for me.

Answer:

13.8 mol CO₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

8.32 × 10²⁴ molecules CO₂

Step 2: Identify Conversions

Avogadro's Number

Step 3: Convert

[tex]8.32 \cdot 10^{24} \ molecules \ CO_2(\frac{1 \ mol \ CO_2}{6.022 \cdot 10^{23} \ molecules \ CO_2} )[/tex] = 13.816 mol CO₂

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

13.816 mol CO₂ ≈ 13.8 mol CO₂

Answer: Elements in the same family generally have similar properties because they contain the same number of the electrons, for instance.

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Answer: C

Explanation: Mercury and Mars have the same gravitational force. I got it right

Answer:

b. the precision of the throws

Explanation:

When dealing with paper delivery homeowners are mainly concerned about the precision of the throws. They technically want the paper to land directly on their front door. Landing there, the paper will be protected from the rain and be visible for the homeowner to easily see it and pick it up in the morning when they wake up. Bad precision can lead the paper to fall into a puddle or on the grass where it will get wet and become useless or even end up breaking a window or other fragile items.

Answer:

A. Temperature or Pressure

Explanation:

Explanation:

atomic number=88

atomic number =4

why is Ra larger than Be

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Answer:

Average atomic mass = F

1

M

1

+F

2

M

2

+...+F

n

M

n

Where F

1

,F

2

,...F

n

is the fraction representing the natural abundance of the isotope and M is the weight of the isotope.

Avg. At. Mass = (0.85×11)+(0.10×12)+(0.05×13)

= 9.35+1.2+0.65

Therefore, the average atomic mass = 11.2

Answer:

The temperature outside the ball has changed

Answer:

Explanation:

The chemical elements are arranged in order of increasing atomic number. The horizontal rows are called periods and the vertical columns are called groups. Elements in the same group have similar chemical properties. This is because they have the same number of outer electrons and the same valency.

The Answer is B, 18 smores.

Explanation:

It takes simple math. There are 36 graham crackers. You divide it by 2 because you have to use 2 crackers for each smore. There is more than enough marshmallows and squares of chocolate to make 18 smores.

You can only make 18 smores because even though there's a lot of marshmallows and square of chocolate, there is no more graham crackers to make more smores.

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Its B, trust me

Im smart

The distance from Platform B to Platform C is 26.926 units

The parameters listed are;

The distance between platforms A and F on the zip-line course is provided;

On the path of travel graph shown, we have;

Point B's coordinates are (-25, -20) and Point C's coordinates are (-15, 5)

The formula provides the distance between two locations with coordinates (x1, y1) and (x2, y2);

l=[tex]\sqrt[]{(y2-y1)^2 +(x2-x1)^2}[/tex]

Therefore, by inserting (-25, -20) = (x1, y1) and (-15, 5) = (x2, y2), the distance between B and C may be calculated.

that provides;

l=[tex]\sqrt[]{(5- (-20))^2 + ((-15) - (-25))^2}[/tex] = 26.926 units

B and C are separated by 26.926 units.

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Answer:

Water will flow from beaker to cell

Explanation:

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If calcium carbonate is heated strongly, carbon dioxide gas is driven off , leaving a residue of calcium oxide then the  unbalanced chemical reaction for this process is given as ,

[tex]CaCO_{3}[/tex] → [tex]CO_{2}[/tex] + CaO

A chemical equation that is out of balance has an uneven number of atoms from various elements in the reactants and products side . Chemical equations must be balanced since they are not accurately represented when they are unbalanced .

In balanced chemical equation the number of atoms in reactant side is equal to the number of atoms in product side .

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Answer:

0.5133805136 moles.

Explanation:

1 gram of Al2(Co3)3 equals 0.0017112683785004 moles, we need the amount of moles produced in 300 grams of Al2(CO3)3, so we have to multiply 1 gram of Al2(CO3)3 times 300: 0.0017112683785004 x 300, in conclusion,

300 grams of Al2(Co3)3 equals 0.5133805136.

The student is expected to classify matter by physical properties, including shape, relative mass, relative temperature, texture, flexibility, and whether material is a solid or liquid.

Flexibility is the ability of a joint or series of joints to move through an unrestricted, pain free range of motion. Although flexibility varies widely from person to person, minimum ranges are necessary for maintaining joint and total body health.

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Answer:

its cold

Explanation:

Answer:

A pure substance that is made up of different elements

Explanation:

Answer:

D. a pure substance that is made up of different elements

Explanation:

Step-by-step explanation:

There are two types of pure substances: elements and compounds.

Elements are made up of only one type of atom. And compounds are pure substances, that are made up of more than one type of element. Like - magnesium oxide. It is a compound of a metal with a non-metal and is held together with ionic bonds.

Answer:

The number of protons determine the type of atom

Answer:

c

Explanation:

igneous, sedimentary, and metamorphic. igneous forms from molten rock cools and solidifides

Answer:A plant cell has a well defined shape, because it has a cell wall.

Explanation: