Is the correlation between time spent studying each day positive or negative?

Based on the information we can infer that substance z is an example of an element, substances x and t are examples of compounds, and substance y is an example of a mixture.

To identify the classification of each substance we must take into account the image. In the image we see atoms of each element that are distinguished by different colors. In the case of red and blue atoms, they are examples of compounds because they are two different elements.

On the other hand, atoms of the same color form particles of a specific element. From the above we can infer that substance z is an example of an element, substances x and t are examples of compounds, and substance y is an example of a mixture.

Learn more about compounds in: https://brainly.com/question/14117795

#SPJ1

Answer:

Ver explanación e imagen adjunta.

Explanation:

El compuesto se conoce generalmente como N, N-dietilbenzamida.

Es una amida porque tiene la fórmula general RCONR.

La molécula se llama N, N-dietil benzamida porque los dos grupos etilo están unidos al átomo de nitrógeno como se muestra en la molécula.

Answer:

Explanation:

fire is non-living thing due to the fact that fire does not exihibit the eleven characteristics of life ( MR NIGER CADL )

Another reason is that fire is not made of cells. All living organisms are and must be made of cells. Although fire needs oxygen to burn, this does not mean it is living.

Answer:

Mountains

Explanation:

Mountains are colder than the lower elevations.  When humid air enters a cooler region, the saturated air begins to cool  and this reduces the ability of the air to maintain the evaporated water is the gas state.  Molecules of water have reduced enerfy at the cooler temperatures.  They will slow down and coalesce with other water molecules to form small droplets of water.  The atmoshere cannot hold these heaevier droplets and they begin to fall  (i.e., rain).

One migh ask why does the air temperature drop at higher altitudes?  Heat rises, so why shouldn't it be warmer on top a mountain, compared to the valley.  The reason is that the atmosphere becomes less dense the further from Earth's center on gets.  This less dense air has a lower water saturation point, so it rains.

Answer:

A. can travel through empty space

Explanation:

it is said dat electro magnetic waves or radiation travels through the vacuum of space

Answer:

all of the above. Because, Y'know, electromagnetic radiation is like that.

Answer:

me

Explanation:

me

The semi-crystalline polymer of the same composition, a completely amorphous polymer is expected to the crystallites scatter light.

Crystallization of polymers is a manner associated with the partial alignment of their molecular chains. these chains fold together and shape ordered areas called lamellae, which compose larger spheroidal systems named spherulites.

Semi-crystalline plastics can be taken into consideration for a selection of applications. choosing a plastic material for use in excessive temperature surroundings calls for a cautious assessment of fabric residence information. View our interactive Thermoplastics Triangle to evaluate substances.

Polyethylene is a partially crystalline solid whose residences are exceedingly dependent on the relative content of the crystalline section and amorphous section, i.e., crystallinity. Polyethylene is a polymer polymerized from monomeric ethylene.

Learn more about semi-crystalline polymer here:-https://brainly.com/question/28383719

#SPJ4

The concentration of the reactant after precisely two days is 4.62 M.

For a zero-order reaction, the rate is independent of the concentration and is given by the expression:

rate = k

where k is the rate constant.

The integrated rate law for a zero-order reaction is:

[A] = -kt + [A]₀

where [A] is the concentration of the reactant at time t, [A]₀ is the initial concentration of the reactant, k is the rate constant, and t is time.

Substituting the given values into the equation, we get:

[A] = -kt + [A]₀

[A] = -0.0119 M/hr * (224 hr) + 5.19 M

[A] = -0.5712 M + 5.19 M

[A] = 4.6188 M

Rounding off to three significant figures and two decimal places, we get the final concentration as 4.62 M.

To know more about rate constant, here

brainly.com/question/30787205

#SPJ4

Answer:Main Answer:

The mass of CO2 released in the production of 123,000 g of H2 gas is 265,200 g.

Explanation: From the given equation, we can see that the production of 4 moles of H2 requires the combustion of 1 mole of CH4, resulting in the release of 2 moles of H2O and 1 mole of CO2. The molar mass of H2 is 2 g/mol, and the molar mass of CO2 is 44 g/mol. Therefore, the mass of CO2 released in the production of 123,000 g of H2 is (123,000/2) x (1/4) x 44 = 265,200 g.

The conditions for a standard electrochemical cell. select one or more : pressure of 1 atm temperature of 298 k solution concentrations of 1 M.

The electrochemical cell is the cell that is capable of generating the electrical energy from the chemical reactions or by the use of the electrical energy to cause the chemical reaction. The conditions for a standard electrochemical cell. select one or more : pressure of 1 atm temperature of 298 k solution concentrations of 1 M.  

There are the two types of the electrochemical cells is as follows : the galvanic called the electrolytic cells. the galvanic cell is also called as the voltaic cell.

To learn more about temperature here

https://brainly.com/question/14995282

#SPJ4

The number of moles of magnesium, chlorine, and oxygen atoms in 2.70 moles of magnesium perchlorate is 2.70, 5.40, 21.60.

The formula of the compound is Mg(ClO​​​​4)2.

From the formula, we can see that 1 molecule of Mg(ClO4)2 contains 1 atom of Mg, 2 atoms of Cl and 8 atoms of O.

So 2.70 mol Mg(ClO4)2  contains

1 * 2.70 mol Mg = 2.70 mol Mg

2 * 2.70 mol Cl = 5.40 mol Cl

8 * 2.70 mol O = 21.60 mol O

So, the required answer is 2.70, 5.40, 21.60.

Therefore, the number of moles of magnesium, chlorine, and oxygen atoms in 2.70 moles of magnesium perchlorate is 2.70, 5.40, 21.60.

To learn more about number of moles from the given link.

https://brainly.com/question/15356425

#SPJ4

Answer: Click the puzzle pdf I did some of the words but if you need more let me know because I will go back in and do more!

Explanation:

Answer:

Explanation:

8%

Answer:

s1 to GS as the amount of energy required to remove the electron is greatest when it is closest to the nucleus.

Explanation:

Fun facts:

When the electron changes levels, it decreases energy and the atom emits photons. The photon is emitted with the electron moving from a higher energy level to a lower energy level. The energy of the photon is the exact energy that is lost by the electron moving to its lower energy level.

Answer:

The answer is: S.1 to G.S

Hope this helpss :) <3

Explanation:

The atomic number of an element represents the number of protons in an atom of that element. Since the isotope given is Mn-59, the atomic number of manganese (Mn) remains the same, which is 25.

If an atom of Mn-59 has a charge of +5, it means that it has lost 5 electrons. The number of protons in an atom is equal to its atomic number, and the number of electrons is equal to the number of protons in a neutral atom. Therefore, if the atom has lost 5 electrons, the number of protons remains the same, which is 25.

So, an atom of Mn-59 with a charge of +5 has 25 protons.

learn more about protons here

https://brainly.com/question/12535409

#SPJ11

Answer:

CH4+2O2→CO2+2H2O 

Explanation:

CH4+2O2→CO2+2H2O 

Answer:

phosphorus (P)

Explanation:

this is because when we add

2+2+6+2+3

we get 15

15 is also the atomic number so when we check the periodic table, we know phosphorus has an atomic number of 15 therefore the answer is phosphorus.  

Mass of hydrate + crucible = 47.29 g

Mass of anhydrous salt = 2.7 g

Molar mass of anhydrous salt CuSO4 = 159.5 g

Given,

mass of empty crucible = 42.45 g

mass of hydrate salt= 4.84 g

mass of crucible after first heating = 46.1 g

mass of crucible after second heating= 45.153 g

mass of crucible after third heating= 45.15 g

so, as per the question we need to find...

Mass of hydrate + crucible = ? g

Mass of anhydrous salt = ? g

Molar mass of anhydrous salt CuSO4 = ? g

∴Mass of hydrate + crucible = 42.45 + 4.48 = 47.29 g

The given salt is in hydrate form, to remove water from this molecule we need to perform heating .

So we are taking the substance into the crucible as it is in less quantity.

Here, we performed heating 3 times and note the weight after every heating.

After this, assume that the water is totally evaporated and the remaining salt is in anhydrous form,

∴ Mass of anhydrous salt = 45.15 - 42.45 = 2.7 g

To find the molar mass of anhydrous salt of CuSO4,

atomic weight of Cu = 63.5 g

atomic weight of S = 32 g

atomic weight of O =16 g

∴ molar mass of anhydrous salt of CuSO4 = 63.5 + 32 + (16 ×3)

                                                                   =159.5 gm

Learn more about molar mass here...

https://brainly.com/question/837939

#SPJ10

Answer:

Pic attached of structures

Explanation:

a) Propanal       (R-CHO; Carbonyl grp structure)

b) Dimethyl ether or methoxymethane     (R-O-R)

Answer:

True

Explanation:

At the end of each bronchiole is a cluster of little air sacs called alveoli. Alveoli are wrapped in tiny blood vessels called capillaries. The air you breathe in fills these air sacs with oxygen-rich air. This is where the exchange of gases occurs.

Answer:

V2 = 33L

Explanation:

KNOW THAT:

V1 = 30L

P1 = 2.0atm

T1 = 27 + 273.15 = 300.15k (it's help to be in Kelvin)

P2 = 2.0 atm

T2 = 54 = 273.15 = 327.15

V2 = ?

We have an equation: P1V1/T1 = P2V2/T2

Multiply both side for T2 to remove it, divided both side for P2 to remove it. So we can left with V2, and that is what we want to find.

T2P1V1/T1P1 =>> V2= 33L

The membrane would become more adverse as a result.The membrane would become more negative if the membrane's potassium permeability increased.

Similar to this, the gradient in sodium ion concentration tends to encourage their entry into the cell.However, potassium ions are significantly more able to pass through the cell membrane than sodium ions are.As a result, sodium ions diffuse into the cytoplasm more slowly than potassium ions.

When sodium permeability rises to a point that sodium entrance outweighs potassium departure, depolarization turns into a self-sustaining process, or an action potential forms, the barrier cell membrane voltage is attained.

To know more about membrane potential visit:

https://brainly.com/question/14466527

#SPJ4

By loading the TLC plate from a solution with the eluted solution, the extraction of a required material after chromatography can be done through the eluted solution.

An eluted solution is generally used for the separation or extraction of one material from other through washing with the eluted solution.

By doing so, separate layers could be obtained. This process is usually done for extracting the pure form of RNA from cells, primary cell isolates, and animal and plant tissues from tumors.

Elution refers to the extraction of a substance from the solid adsorbed medium after the process of chromatography without impurities with the help of a solvent.

So, when a TLC plate is loaded from a solution to an eluted solution, then the adsorbed material from the solid medium gets extracted or separated. This would be the possible outcome.

To know more about chromatography, click below:

https://brainly.com/question/11960023

#SPJ4

Answer: Option 1

Explanation: hopes it helps

Valence Shell Electron Pair Repulsion (VSEPR) theory is employed in prophesying the geometrical organisation of the specific molecule with the aid of electron sets found encompassing the atom.

The correct answer is:

Option A. If a molecule has four pairs of electrons, it will always have a tetrahedral structure.

This can be explained as:

Therefore atom containing four pairs of electrons will have a tetrahedral shape.

To learn more about VSEPR theory follow the link:

https://brainly.com/question/12775505

Answer:

MnO₂

Explanation:

Answer:

By heating the solution

Explanation:

Physical changes and chemical changes are the two types of changes that a substance undergoes. Physical change does not alter the substance's chemical composition, hence, can be easily reversed. There is also no new product formed. This is contrary to the occurrences of a chemical change, which cannot be reversed after a new product has been formed.

A physical change is what occurs when Adrian's teacher dissolves some sugar in a beaker of water to form a sugar solution. This change does not involve any new product formation, hence, can be reversed. The sugar can be derived back from the solution by HEATING THE SOLUTION. The water (solvent) will evaporate and the sugar (solute) will precipitate.

Answer:

D.

Explanation:        

The action of clearing a wide area of trees.

The relationship in which one species kills and consumes another species is known as predation.

Predation is an essential component of ecosystems, influencing not only the predator and prey but also the surrounding environment and other organisms in the food web.Predation is widespread in nature and is found in all major taxa, including bacteria, fungi, plants, and animals.

As a result, predation affects all levels of the food web, from primary producers to apex predators.Predators are classified as carnivores, meaning they feed on other animals, and herbivores, which feed on plants. Some predators are generalists, meaning they eat a wide variety of prey, while others are specialists, feeding on a specific type of prey. The type of predator often determines the hunting strategy, such as ambush, pursuit, or scavenging.

The prey is classified as either active or passive defenses. Active defenses are those that involve the prey moving or taking some other action to avoid being eaten, such as fleeing or hiding. Passive defenses are those that do not require any action on the part of the prey, such as cryptic coloration or chemical defenses.

When predators are introduced to an ecosystem, they can have a significant impact on the prey population and the surrounding environment. Predators can reduce the number of prey, which can lead to a cascade of effects through the food web.

For more such questions on relationship visit:

https://brainly.com/question/23277752

#SPJ8

Answer:

yes

Explanation:

CO2 is soluble because water molecules are attracted to these polar areas. The bond between carbon