(02.05 LO
Which type of heat transfer takes place through electromagnetic waves? (3 points)

Explanation:

It is more difficult to remove electrons from the second shell or energy level because of the imbalance between the positive nuclear charge and the remaining electrons.

Answer:

c. they carry energy is the answer

Answer:

C. they carry energy

Explanation:

Energy can be carried from one place to another by waves, including water, light, and sound waves. Waves are oscillating disturbances that travel through but do not move matter.

Infrared radiation escaping from hot coals is an example of invisible waves carrying energy. This energy can be felt as heat.

Answer:

5.158 × 10²³ atoms K

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

33.49 g K

Step 2: Identify Conversions

Avogadro's Number

Molar Mass of K - 39.10 g/mol

Step 3: Convert

[tex]33.49 \ g \ K(\frac{1 \ mol \ K}{39.10 \ g \ K} )(\frac{6.022 \cdot 10^{23} \ atoms \ K}{1 \ mol \ K} )[/tex] = 5.15797 × 10²³ atoms K

Step 4: Check

We are given 4 sig figs. Follow sig figs and round.

5.15797 × 10²³ atoms K ≈ 5.158 × 10²³ atoms K

Answer:

Approximately [tex]22\;\rm g[/tex].

Explanation:

Look up the relative atomic mass data of carbon and oxygen on a modern periodic table:

Calculate the formula mass of [tex]\rm O_2[/tex] and [tex]\rm CO_2[/tex]:

[tex]M(\rm O_2) = 2 \times 15.999 = 31.998\; \rm g \cdot mol^{-1}[/tex].

[tex]M(\rm CO_2) = 12.011 + 2 \times 15.999 = 44.009 \; \rm g \cdot mol^{-1}[/tex].

The question suggests that [tex]20\; \rm g - 4\; \rm g = 16\; \rm g[/tex] of [tex]\rm O_2[/tex] took part in this reaction. Calculate the number of moles of molecules in that [tex]16\; \rm g[/tex] of [tex]\rm O_2\,[/tex]:

[tex]\displaystyle n(\mathrm{O_2}) = \frac{m(\mathrm{O_2})}{M(\mathrm{O_2})} = \frac{16\; \rm g}{31.998\; \rm g \cdot mol^{-1}} \approx 0.500\; \rm mol[/tex].

Since [tex]\rm O_2[/tex] is in excess, it would react with [tex]\rm C[/tex] at a one-to-one ratio to produce [tex]\rm CO_2[/tex]:

[tex]\rm C + O_2 \to CO_2[/tex].

Notice the ratio between the coefficient of [tex]\rm O_2\![/tex] and [tex]\rm CO_2[/tex]: [tex]\displaystyle\frac{n(\mathrm{CO_2})}{n(\mathrm{O_2})} = \frac{1}{1}[/tex]. For each mole of [tex]\rm O_2[/tex] that is consumed, one mole of [tex]\rm CO_2\![/tex] will be produced.

The question implies that [tex]16\; \rm g[/tex], which is approximately [tex]0.500\; \rm mol[/tex], of [tex]\rm O_2[/tex] was consumed in this reaction. Accordingly, [tex]0.500\; \rm mol\![/tex] of [tex]\rm CO_2[/tex] will be produced.

Calculate the mass of that [tex]0.500\; \rm mol\![/tex] of [tex]\rm CO_2[/tex]:

[tex]m(\mathrm{CO_2}) = n(\mathrm{CO_2})\cdot M(\mathrm{CO_2}) \approx 22\; \rm g[/tex].

Answer:

(Ar, Xe, Rn) is the answer

According to the electronic configuration groups three to twelve have elements with more than one positive oxidation state.

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

#SPJ6

Answer:

The nail will exert a force of equal strength in the opposite direction on the first object.

Explanation:

"According to Newton's third law of motion, when a hammer strikes and exerts force on a nail, the nail exerts a force of equal strength in the opposite direction on the first object."

Basically, if you push someone, they will fall over right?

Still, you will feel the force as you push them over, and you might stumble back while they are pinwheeling and falling into a pool.

That force is that torque when the person's weight is also pushing back at you while your force is pushing at them.

Answer:

3) Warm Temperatures and High pressures

Explanation:

This is the typical characteristic of southern air masses moving north

I need help with it too

Answer:

$28.5388

Explanation:

First you need to find the amount of money per day by doing 15,000,000/365

Then find the amount of money per hour by doing 41095.890411/24

Finally you find the amount per minute by doing 1712.32876713/60 to get 28.5388127855.

Round if necessary

Answer:

Lithium (Li)

Explanation:

Lithium has an atomic number of  3

Answer:

6.02 x 10²³ electrons

Explanation:

Given parameters:

Mass of H₂  = 2g

Unknown:

Number of electrons = ?

Solution:

To find the number of electrons, we must determine the number of moles of H₂ first.

 Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

  Molar mass of H₂   = 2(1)  = 2g/mol

Number of moles  = [tex]\frac{2}{2}[/tex]   = 1mol  

1 mole of a substance contains 6.02 x 10²³ particles

the particles can be protons, neutrons, electrons

So,

  2g of H₂ will contain 6.02 x 10²³ electrons.

Answer:

Ionic bonds - an intramolecular force exist in a nonmetal and metal compounds such as NaCl. The Na donate 1 electon to Cl to complete its octet rule.

Covalent bond - an intramolecular force exist in a nonmetal and nonmetal compounds such as bonds O2, Cl2, CO2, sugar, proteins and most of organic compounds and biomolecules by sharing electrons to bond.

There are two types of covalent bonds: polar and nonpolar. Polar bond is a bond between two different nonmetal atoms of different electronegativities. While nonpolar bond is a bond between the same atom or two differenct atoms of the same electronegativities (if there is). Their electronegativities pull will cancel so that their overall polarity is zero.

Answer:

I think its B

Explanation:

I don't know how to explain it bc I'm not really sure

Answer:

Sodium

Explanation:

Sodium is a pure chemical, hence it can be represented by the single chemical symbol Na.

Water has a chemical symbol of H2O, consisting of two, and not one, symbols, H and O.

Sulfate ion consists of a sulfide ion and four oxygen ions (SO4)2-. Hence, it does not fit.

Finally, potassium chloride has a chemical symbol of KCl. Consisting of two different chemical symbols, (K and Cl), it does not fit either.

Hope this helped!

Answer:

0.92moles

Explanation:

Given reaction:

              2Fe + 3Cl₂ →  2FeCl₃

Mass of FeCl₃  = 100g

Unknown:

Number of moles of Cl₂  needed = ?

Solution:

To solve this problem, we work from the known specie to the unknown.

From the mass of the FeCl₃ given, we can solve for the number of moles of the unknown.

  Number of moles  = [tex]\frac{mass}{molar mass}[/tex]  

  Molar mass of  FeCl₃ = 56 + 3(35.5) = 162.5g/mol

   Number of moles  = [tex]\frac{100}{162.5}[/tex]  = 0.62mole

From the reaction expression;

           2 mole of FeCl₃ is produced from 3 moles of  Cl₂  

           0.62 mole of FeCl₃ will be produced from [tex]\frac{0.62 x 3}{2}[/tex]   = 0.92mole

The number of moles of Cl₂  = 0.92moles

Answer:

5 mol

Explanation:

by stoichiometry

nN2/1=nNH3/2

2.5=nNH3/2

nNH3=2.5×2

nNH3= 5 mol

Answer: I got 5.0 moles

Explanation:

Answer:

a

Explanation:

Warm air and water both tend to rise while cooler air and water sink different parts of the oceans are heated unevenly, this causes the water to move in convection currents.

A stream of charged particles, such as electrons or ions, traveling through an electrical conductor or a vacuum is known as an electric current. The net rate of electric charge flowing through a surface or into a control container is how it is calculated.

Magnetic fields are produced by electric currents and are applied in motors, generators, inductors, and transformers. They result in Joule heating in conventional conductors, which lights up incandescent light bulbs.

Electromagnetic waves produced by time-varying currents are utilized in communications to transmit information.

Thus, option A is correct.

To learn more about current follow the link;

https://brainly.com/question/3110787

#SPJ2

Answer:

The force of gravity is inversely related to the distance the alien is from Earth; this means that force of gravity decreases as the distance between the alien and Earth increases. As the distance between the alien and the surface of the planet increases, the force of gravity decreases.

Explanation:

Answer:

Answer:

Hydrophobic means "scared of water" or "the fear of water."

Hydro = water

phobic = fear

You'll use this at one point in Biology class.

Answer:

hi

Explanation:

acids are corrosive, rective when combined with bases form salt and when combined with metal form h2o

Answer:

page no,165 ma xa. yo question KO ans

Volume HNO₃ : 51.4 ml

Mass CO₂ : 0.17 g

Reaction

Na₂CO₃ + 2 HNO₃ ⇒ 2 NaNO₃ + CO₂ + H₂O

V Na₂CO₃ = 35.7 ml

M  Na₂CO₃ = 0.108

mol Na₂CO₃ :

[tex]\tt 35.7\times 0.108=3.8556~mlmol[/tex]

mol ratio Na₂CO₃  : HNO₃ = 1 : 2

mol HNO₃ :

[tex]\tt \dfrac{2}{1}\times 3.8556=7.71~mlmol[/tex]

Volume HNO₃ :

[tex]\tt mol=n=M\times V\\\\V=\dfrac{n}{M}=\dfrac{7.71}{0.15}=51.4~ml[/tex]

mol CO₂ = mol Na₂CO₃ = 3.8556 mlmol=0.00386 mol

mass CO₂(MW=44 g/mol) :

[tex]\tt 0.00386\times 44=0.17~g[/tex]

Answer:

ATP supply will reduced or decrease drastically

Explanation:

ATP will reduced because carbohydrates are energy given food. Chemical energy are in carbohydrates, therefore when the undergo digestion i.e breakdown of larger pieces into smaller pieces, it is broken down into glucose i.e energy is released. Therefore, if there is now carbohydrates, ATP supply will reduced and there won't be energy needed for different cellular metabolic activities. The breakdown of carbohydrate supply energy.

Answer:

D

Explanation:

It would be D because you are observing the reaction and don’t change anything

Answer:

1. The brain

2. MOUSE / KEYBOARD = HANDS

Explanation:

1.The CPU is like the brain of the body. The CPU controls the computer and is the most important part of a computer; similar to the way the brain controls the human body and is very important. Get it?

2.Both are input devices. They are used to send in instructions and information into and out of the computer.

Hope this helps!

Answer:

687.5 g of CO2

Explanation:

We'll begin by writing the balanced equation for photosynthesis. This is illustrated below:

6CO2 + 6H2O —> C6H12O6 + 6O2

Next, we shall determine the mass of CO2 absorbed and the mass of O2 released from the balanced equation. This is illustrated below:

Mass of CO2 = 12 + (2 × 16) = 12 + 32

= 44 g/mol

Mass of CO2 from the balanced equation = 6 × 44 = 264 g

Molar mass of O2 = 2 × 16 = 32 g/mol

Mass of O2 from the balanced equation = 6 × 32 = 192 g

Summary:

From the balanced equation above,

264 g of CO2 were absorbed to release 192 g of O2.

Finally, we shall determine the mass of CO2 absorbed to release 500 g of O2. This can be obtained as follow:

From the balanced equation above,

264 g of CO2 were absorbed to release 192 g of O2.

Therefore, Xg of CO2 will be absorbed to release 500 g of O2 i.e

Xg of CO2 = (264 × 500)/192

Xg of CO2 = 687.5 g

Thus, 687.5 g of CO2 will be absorbed to release 500 g of O2.

Answer:

The rows on the periodic table are called periods. All the elements in a period have valence electrons in the same shell. The number of valence electrons increases from left to right in the period. When the shell is full, a new row is started and the process repeats.

Explanation:

hope this helps..

Answer:

I would say you are correct.

Explanation:

Answer:

I believe it'll be A (even though you chose it already).

Explanation:

CH3 is the empirical formula of a compound that has a carbon to hydrogen ratio 2-6.

What is empirical formula?

The empirical formula of a chemical compound is the simplest and most basic ratio of the constituent elements present in it. It is written as the smallest whole-number ratio of the constituent elements, and does not indicate the amount or concentration of each element.

The empirical formula of a compound is the simplest whole number ratio of atoms in a molecule. In this case, the given carbon to hydrogen ratio of the compound is 2:6, which can be simplified to 1:3. This means that for every one carbon atom, there are three hydrogen atoms in the compound.

6H / 2C × 1/2 / 1/2 → 3 H / 1C

Therefore, the empirical formula of this compound is CH3.

To learn more about empirical formula the link

https://brainly.com/question/14044066

#SPJ1

Answer:

Bond broking

Explanation:

Bond broking.