Which process represents chemical weathering?

Process A: Waves in a River lift rocks which crash down to the river bed and break

Process B: Water in the cracks of rocks freezes and breaks open the rocks

Process C: An organic acid produced by rotting vegetation makes holes in rocks

Process D: Roots of plants push against rocks and make cracks in them

I would divided it to get the anwser and then moloeces

Explanation:

Divide

Answer:

1s2 2s2 2p3

Explanation:

Answer:

Rn

Explanation:

Rn is the symbol for radon with the atomic number of 86

The bond angle around each central carbon atom is 120°and they are both sp2 hybridized having three regions of electron density.

We can see that the two central carbon atoms have a double bond to each other. A double bonded specie is sp2 hybridized. This implies that the two central carbon atoms are sp2 hybridized.

Also, there are three regions of electron density around each of the two central carbon atoms because each is bonded to three atoms respectively. The bond angle of each central atom is 120°.

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Hint: A mole is the entity that denotes 6.022×1023 particles.

Answer:

Explanation:

The potential energy of a body can be found by using the formula

PE = mgh

where

m is the mass

h is the height

g is the acceleration due to gravity which is 10 m/s²

From the question we have

PE = 25 × 10 × 230 = 57,500

We have the final answer as

Hope this helps you

Answer:The reaction of butane with sufficient/excess oxygen is as follows:

2C₄H₁₀ + 13O₂ ⇒ 8CO₂ + 10H₂O

To work out how much water is produced, we first need to convert 2.64g of butane to moles by dividing it by butane's molecular mass, which is 58g/mol. From this we can see that we have roughly 0.045mol of butane. Since 0.045 is 0.022 of 2, we multiply this to get 0.22mol of water produced. The last thing to do is to multiply this by 18g (the molecular mass of water) to get 3.96g of water produced.

Explanation:

The calorific value of the tablespoon of cookie dough is 58.7 Calories per gram.

We have the following information from the question;

Mass of the cookie dough =  12.99 g

Heat capacity of the calorimeter = 72.49 kJ/∘C

Temperature rise = 25.23 ∘C - 21.84 ∘C = 3.39∘C

H =  12.99 g × 72.49 × 10^3J/∘C ×  3.39∘C

H = 3.19 × 10^6 J or 762.4 Cal

1 g produces 762.4 Cal/ 12.99 g = 58.7 Calories per gram

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(May not be 100% correct as there may be more context, but I hope this helps! Have a nice day!)

     We can tell it won't be Claim 1 as Claim 1 compares a reddish-brown substance to a gray/white substance.

     I am going to go with Claim 3 is most supported by the evidence because of the three descriptions of the different substances, none of them match.

Answer:the 50 kg girl because she is 1/4th of the weight of the 200 kg man which would fall down faster causing him to have more kinetic energy and the little girl would have more more potential energy

Explanation: because in different …and ur stuck on question 10 of unit 4 guided notes

Answer:

Aluminum

Explanation:

Because aluminum temperature changed less than the copper's did under the same condition. This, the aluminum must require more energy to change its temperature

Answer:

Molarity of ETHL in a 750 ML bottle is 43777.5

Explanation:

Because 1 mole of ETHL is 58.37ML multiply it by 750ML

Considering the definition of period, group and electronic configuration:

The elements are arranged in horizontal rows, called periods, and in columns, called groups.

The Electronic Configuration of the elements is the arrangement of all electrons of an element in energy levels and sub-levels (orbitals).

There are 7 energy levels, numbered from 1 to 7, and in which electrons are distributed, logically in order according to their energy level.

Each level is divided into sub-levels. These sub-levels into which each level is divided can be up to 4. These 4 sub-levels are called: s, p, d, f.

The placement of the elements in the periodic table is done taking into account the electronic configuration.

In each period, the elements whose last level of their electronic configuration coincides with the number of the period appear.

On the other hand, in each group appear the elements that present the same number of electrons in the last occupied level or valence shell.

In summary:

Learn more:

Answer:

32

Explanation:

Principal quantum number=n=4

Maximum number of electrons:-

[tex]\\ \sf\longmapsto 2n^2[/tex]

[tex]\\ \sf\longmapsto 2(4)^2[/tex]

[tex]\\ \sf\longmapsto 2(16)[/tex]

[tex]\\ \sf\longmapsto 32[/tex]

Answer:

insoluble solid from a liquid.

Answer:

Preparing coffee and tea

Explanation:

Answer:

A because nuclear reaction i think lol

Explanation:

Answer:

??????

Explanation:

In ammonia, each nitrogen atom is bonded to three hydrogen atoms.

The groups in the periodic table contain elements that share the same chemical reactivity while elements in the same period only have the same total number of shells.

Nitrogen is in group 15 while hydrogen is in group 1. In ammonia, each nitrogen atom shares three electrons with hydrogen atoms. Hence in ammonia, each nitrogen atom is bonded to three hydrogen atoms.

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Explanation:

All precipitation gravimetric analyses share two important attributes. First, the precipitate must be of low solubility, of high purity, and of known composition if its mass is to reflect accurately the analyte's mass. Second, it must be easy to separate the precipitate from the reaction mixture.

Answer:Thermal energy transfer involves the transfer of internal energy.

Explanation:

Three types of thermal energy transfer are conduction, convection and radiation.

Answer:

I say both I hope this helps

Answer:

D. Data that support a hypothosis

Explanation:

Evidence needs to support a claim

Answer:

data that support a hypothesis

About:

Explain the second law of thermodynamic

Answer:

The second law of thermodynamics is the law of physics which states that it is impossible to construct a heat engine operating in a cycle that solely converts the heat energy obtained from a reservoir at a certain temperature into mechanical work entirely.

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[tex] \green{ \boxed{ \boxed{ \sf{Lusi \: Adriana} } } } [/tex]

Answer:

dry with some fluid

Explanation:

Answer:

It's difficult to measure the mass of an atom because they are simply so tiny. It's not like we can just put it on a weighing scale, as it wouldn't show up at all

Answer:

Because atoms are much too small to measure individually and do not have charges, there is no convenient way to accurately measure absolute atomic masses.

Answer:

Explanation:

[He] 2s2 2p1

Answer:

In He2 molecule,

Atomic orbitals available for making Molecular Orbitals are 1s from each Helium. And total number of electrons available are 4.

Molecular Orbitals thus formed are:€1s2€*1s2

It means 2 electrons are in bonding molecular orbitals and 2 are in antibonding molecular orbitals .

Bond Order =Electrons in bonding molecular orbitals - electrons in antibonding molecular orbitals /2

Bond Order =Nb-Na/2

Bond Order =2-2/2=0

Since the bond order is zero so that He2 molecule does not exist.

Explanation:

Answer:

The warmer, lighter air rises, bringing cooler, heavier air to low altitudes.

Air at higher altitudes doesn't have as much air weighing down on it from above.

Explanation:

In short - air pressure is the result of the cumulative force that air molecules act on objects below them due to Earth's gravity. The higher the altitude, the less air molecules there are to act a force below them, and therefore, there's less air pressure at higher altitudes.

Answer:

I believe it's the second option "Lighter air molecules float above heavier air molecules

Explanation:

I believe this because as altitude increases the amount of gas molecules decrease which makes the air less dense