Does a rumor spread faster in a gym where all of
the students can move around freely, or in a classroom where students are
confined to desks? Develop an analogy for the difference in conductivity
between metals and ionic solids.

Answer:

A

Explanation:

Answer:

the mass of 8.03 mole of NH3 is 136.51 g

Explanation:

The computation of the mass is shown below:

As we know that

Mass = number of moles × molar mass

= 8.03 mol  × 17 g/mol

= 136.51 g

Hence, the mass of 8.03 mole of NH3 is 136.51 g

We simply multiplied the number of moles with the molar mass so that the mass could come

Answer:

Albert Einstein proposed the wave-particle theory of electromagnetic radiation. This theory states that electromagnetic energy is released in discrete packets of energy—now called photons—that act like waves.

Answer:

3 sometimes 4

Explanation: there are usualy

3 layers of paint but sometime manufacterers add paint protection film to bring the total up to 4

Answer:

The air over the ocean is now warmer than the air over the land. The land loses heat quickly after the sun goes down and the air above it cools too

Explanation:

Answer:

The melting and boiling points of molecular compounds are generally quite low compared to those of ionic compounds. This is because the energy required to disrupt the intermolecular forces between molecules is far less than the energy required to break the ionic bonds in a crystalline ionic compound

Answer:

the mass number decreases by 4 and the atomic number decreases by 2

Answer:

Ca3P2

Explanation: find out what 66% of the molar weight of the molecule is and then find out how many moles of Ca that would be by dividing it by the molar weight of Ca

then do the same for P

Answer:

3). 1.30 × 10^(24) molecules

Explanation:

From avogadro's law which state that equal volume of all gases at the same temperature and pressure contain the same number of molecules.

We can relate it to this question as;

V₁/n₁ = V₂/n₂

Where;

V₁ is initial volume

n₁ is initial number of molecules

V₂ is final volume

n₂ is final number of molecules

Thus at STP, we have V₁ = V₂ and as such Plugging in the relevant values gives;

5/(1.30 x 10^(24)) = 5/n₂

n₂ = 1.30 x 10^(24) molecules

Answer:

1.30 X 1024  molecules

Explanation:

just took the test :D

have a miraculous day!!! <3

Answer:

1.584e10 = 15,840,000,000,000

Explanation:

250,000 miles

multiply the length value by 63360

25e4 x 63360

= 1.584e10

Answer: 110000000 inches

Explanation: Since the moon is 1,320,000,000ft away from the earth you divide 1,320,000,000ft  with 12 to get your final answer 110000000      

Answer:

The part of the experiment that is set to compare data

Explanation:

The controlled variable is what stays constant throughout an experiment. You use the controlled variable to compare the new data to see what happened during whatever reaction you could say.

Answer:

Q = 5805 Joules.

Explanation:

Given the following data;

Mass = 2250g

Specific heat capacity of silver = 0.129 J/g·°C

Initial temperature, T1 = 0.0°C

Final temperature, T2 = 200.0°C

To find the quantity of heat needed;

Heat capacity is given by the formula;

[tex] Q = mcdt[/tex]

Where;

dt = T2 - T1

dt = 200 - 0

dt = 200°C

Substituting the values into the equation, we have;

[tex] Q = 225*0.129*200[/tex]

Q = 5805 Joules.

Therefore, the amount of heat needed is 5805 Joules.

Given values:

                                                      [tex]= 200-0[/tex]

                                                      [tex]= 200^{\circ} C[/tex]

As we know the formula,

→ Heat capacity, [tex]Q = mcdt[/tex]

By substituting the values, we get

                                [tex]= 225\times 0.129\times 200[/tex]

                                [tex]= 5805 \ Joule s[/tex]

Thus the above answer is right.

Learn more about heat here:

https://brainly.com/question/20846683

Answer:

the answer is B

Explanation:

please tell if correct or not and can you give brainliest

Answer:

well i would say D

Explanation:

the crust in fact does have more iron within in it but if i describe it more i would say the crust is a smaller amount then the mantle, and that its a bit harder material then the mantle itself

gram of NO=5

2NO = 2N+O2

2×2.50=x

x=5

The mass of nitrogen monoxide  produced from 2.5 grams of oxygen is 1.875 grams

4NH₃ + 50₂ → 4NO + 6H₂0

The limiting reagent is 0₂ because the least moles of this are used in the reaction.

Therefore, it will determine the amount of product formed.

From the chemical reaction above

10(16) g of 0₂ gives (4×14 + 4×16) g of NO

2.50 g of 0₂ will give ? of NO

cross multiply

mass of NO formed = 2.50 × 120 / 160

mass of NO formed = 300 / 160

mass of NO formed = 1.875 grams

learn more on mass here: https://brainly.com/question/14269180

Answer:

Explanation:

ok, so heat energy is a result to moving particles which are atoms  molecules or ions in solids,liquids and gasses. And heat energy can be moved from an object to a other object. The transfer or the flow is different in temperature between the two different of objects which is called heat.

Hope this is useful!

Answer:

150.5 °C

Explanation:

From the question given above, the following data were obtained:

Initial volume (V₁) = 4 L

Initial temperature (T₁) = 35 °C

Final volume (V₂) = 5.5 L

Final temperature (T₂) =?

Next, we shall convert 35 °C to Kelvin temperature. This can be obtained as follow:

T(K) = T(°C) + 273

Initial temperature (T₁) = 35 °C

Initial temperature (T₁) = 35 °C + 273

Initial temperature (T₁) = 308 K

Next, we shall determine the final (i.e the new) temperature of air. This can be obtained as follow:

Initial volume (V₁) = 4 L

Initial temperature (T₁) = 308 K

Final volume (V₂) = 5.5 L

Final temperature (T₂) =?

V₁ / T₁ = V₂ / T₂

4 / 308 = 5.5 / T₂

Cross multiply

4 × T₂ = 308 × 5.5

4 × T₂ = 1694

Divide both side by 4

T₂ = 1694 / 4

T₂ = 423.5 K

Finally, we shall convert 423.5 K to celsius temperature. This can be obtained as follow:

T(°C) = T(K) – 273

T₂ = 423.5 K

T₂ = 423.5 – 273

T₂ = 150.5 °C

Thus, the new temperature of the air is 150.5 °C

Answer:

Speed

Explanation:

Answer:

mass

Explanation:

your welcome

Answer:

1 not

2 not

3 not

4 balanced

5 not

6 not

7 balanced

Explanation:

the amount of elements must be equal in the reactant and products

Answer:

fttttggttfvvgfrr ccsfgt chg chu rdh fig ffhfr

Answer:

To solve this problem, you'll need the formula that relates heat energy to mass and heat of fusion:

q = m·ΔHf

where

q = heat energy

m = mass

ΔHf = heat of fusion

Explanation:

62.3J ÷ 7.3g = ΔHf

8.53 J/g = ΔHf

4.18 cal/g = ΔHf

Answer:

B. Malleability

hope it help

Answer:

1. não entendi

.

3. não entendi

4. não entendi e

5. não entendi

2. não entendi

rysor

Explanation:

Answer:

here...

Explanation:

1 - Temperature is a quantitative measure of how hot or cold something is. Temperature is fundamentally linked to the kinetic energy of atom-scale particles. The Celsius scale is based on the older centigrade scale, adapted slightly to take account of the absolute temperature scale, measured in kelvins, symbol K.

2-  Increasing the temperature will cause chemical changes to occur faster. Decreasing the temperature, causes the particles to lose energy which causes them to move around less and slower. The less they move, the less collisions occur, and the less reactions occur between the chemicals = slower reaction rate.

3-  When a system absorbs or loses heat, the average kinetic energy of the molecules will change. Thus, heat transfer results in a change in the system's temperature as long as the system is not undergoing a phase change.

4-  As the temperature increases, the kinetic energy of the molecules of the liquid increases. The movement of the molecules gradually overcomes forces of attraction between the molecules, with the result that they have greater freedom to move, over greater volumes.

5- The kinetic molecular theory of matter states that: Matter is made up of particles that are constantly moving. Molecules in the solid phase have the least amount of energy, while gas particles have the greatest amount of energy. The temperature of a substance is a measure of the average kinetic energy of the particles.

Answer:

The stamen!

The stamen is often made up of anthers and filaments

Answer:

47.867

Explanation: It's Titanium because the atomic number is the number of protons.

During the Proterozoic eon was the earth made of land masses all clumped together in one supercontinent called Rodinia. Therefore, option A is correct.

The Archean Eon is followed by the Proterozoic Eon, which spans 2.5 billion years to 541 million years old and is known as the "early life" eon. The majority of the continents' center regions were developed by this time, and the plate tectonic process had begun.

The Proterozoic is currently understood based on geological, geochemical, and fossil evidence. The Cambrian epoch and an explosion of various species at the beginning of the Phanerozoic eon both originated at the conclusion of this eon.

During the Proterozoic Era, Rodinia was a supercontinent that included nearly all of Earth's landmasses for around 450 million years (2.5 billion to 541 million years ago).

Thus, option A is correct.

To learn more about the Proterozoic eon, follow the link:

https://brainly.com/question/20700965

#SPJ3

Answer:

1) Covalent bond, in chemistry, the interatomic linkage that results from the sharing of an electron pair between two atoms. The binding arises from the electrostatic attraction of their nuclei for the same electrons.

2)A molecule is the smallest particle in a chemical element or compound that has the chemical properties of that element or compound. Molecules are made up of atoms that are held together by chemical bonds. These bonds form as a result of the sharing or exchange of electrons among atoms.

3)Hydrogen (H2), oxygen (O2), and chlorine (Cl2) molecules, for example, each contains two atoms. Another form of oxygen, ozone (O3), has three atoms, and sulfur (S8) has eight atoms. All elemental molecules are made of atoms of a single element.

Explanation:

PLEASE MARK ME AS BRAINLIEST

Answer:

Reflection: you look in the mirror. Refraction: You put a straw in a glass of water, and it looks like it broke. Absorption: If you have a black sweater and you wear it out in the cold, the black sweater is going to hold in heat better than a lighter sweater because the black sweater absorbs light .

if im not mistaken its because the ozone layer

Answer

What website is this question on?

Explanation:

Answer:

1. true or false: A compound is a substance made of entirely of a single type of atom. answer: true

2. true or false: fig is a mixture of water droplets in air. imma just say its false

Explanation:

3. draining the liquid from a mixture of a liquid and a solid after the particles of the solid substance have settled

^ ^

answer : filtration

sifting

decanting

filtration  

by the way ur teacher is a FiretrUCKING geek he/she looked this up on a quiz

Explanation:

(a). Write down the electronic configuration of (i) magnesium atom, and (ii) magnesium ion, <br> (At No. of Mg=12) ,brgt (b). Write down the electronic configuration of (i) sulphur atom, and (ii) sulphide ion. <br> (At. No. of S=16).