looking at how others are reacting when we are uncertain about how we should react is a process called

The different chemicals emit different colors of light because it will depends on the energy of the photons emitted.

The color of the light emitted will depends on the energy of the photons that is emitted. The emission of the photons take place when the electron jump from the higher energy state to the lower energy state. When the electrons comes to the lower energy state it will emits photons in form of the light.

The light emitted by the photons are different for the different chemicals because no two elements will have the same set of the energy levels.

To learn more about chemicals here

https://brainly.com/question/6967896

#SPJ4

Answer:

C  Which model is composed of electrically charged particles?

Explanation:

The best question to resolve and determine the model which is plasma is to find one that is composed of electrically charged particles.

Plasma is one of the states of matter which is characterized by ions and other charged particles.

Matter is anything that has weight and occupies space.

There are four known states of matter which are:

Plasma is the only state of matter made up of charged particles.

Photosyntheis is a biochemical reaction that combines chemicals with biological species to produce energy. Atoms of hydrogen bond with carbon to form glucose.

Carbon dioxide and hydrogen are the reactants that are used from the environment by the plants to make energy. Glucose and oxygen are the products.

The hydrogen atoms from the environment are absorbed by the plants and are combined with the carbon dioxide to yield glucose or sugar molecules for energy.

Therefore, option B. hydrogen and carbon dioxide react to produce glucose.

Learn more about photosynthesis here:

https://brainly.com/question/1388366

True. Polarity impacts bonding between water molecules in both liquid and solid states. Polarity arises due to the unequal sharing of electrons between oxygen and hydrogen atoms in a water molecule, leading to partial positive and negative charges.

These charges cause water molecules to form hydrogen bonds, which give water its unique properties in liquid and solid states. Water molecules have a polar covalent bond due to the unequal sharing of electrons between the hydrogen and oxygen atoms. This polarity allows water molecules to form hydrogen bonds with each other. In the liquid state, water molecules are constantly moving and forming and breaking hydrogen bonds with each other. In the solid state, the water molecules are arranged in a crystal lattice structure where each molecule is bonded to four others through hydrogen bonds. This arrangement gives ice a lower density than liquid water and allows it to float. The polarity of water also makes it a good solvent for polar and charged substances.

Learn more about Polarity here :-

https://brainly.com/question/1946554

#SPJ11

The cell voltage under standard conditions is 1.93 V.

The half-reaction that takes place at the cathode involves the reduction of \(Fe^{3}\)+ to\(Fe^2\)+:

\(Fe^{3}\)+(aq) + e− →\(Fe^{2}\)+(aq)

The half-reaction that takes place at the anode involves the oxidation of N2H4 to N2:

\(N_{2} H4_{4}\)(aq) + 4OH−(aq) → \(N_{2}\)(g) + 4\(H_{2} O\)(l) + 4e−

To calculate the cell voltage under standard conditions, we need to find the standard reduction potential for the half-reactions and then use the Nernst equation.

The standard reduction potential for \(Fe^{3}\)+ to \(Fe^{2}\)+ is 0.771 V, and the standard reduction potential for the half-reaction involving the reduction of \(N_{2} H4_{4}\) to \(N_{2}\) is -1.16 V (this value is given in the problem statement). We apply the following formula to determine the cell voltage:

\(E^0\)_cell = \(E^0\)_cathode -\(E^0\)_anode

\(E^0\)_cell = 0.771 V - (-1.16 V) = 1.93 V

Therefore, the cell voltage under standard conditions is 1.93 V.

Learn more about Redox Reaction here:

https://brainly.com/question/21851295

#SPJ4

As per the given reaction one mole of magnesium hydroxide reacts with 2 moles of potassium metal to give one mole of Mg. Therefore, 12 moles of potassium reacts to give 6 moles of Mg metal.

In a displacement reaction, one element or group is displaced from the reactant by the other reactant. The given reaction is an example of single displacement reaction.

As per the balanced chemical equation of the reaction, 1 mole of magnesium hydroxide reacts with 2 moles potassium metal to form one mole of Mg metal and 2 moles of potassium hydroxide.

Here, 12 moles of potassium is taken. Then, the number of moles of Mg metal formed is just half the number of moles of K. That is 6 moles of magnesium metal.

Find more on displacement reactions:

https://brainly.com/question/3172917

#SPJ1

The reaction related to your question is given below:

Mg(OH)₂ + 2K ⇒2KOH + Mg

Explanation:

To find the isotope that is expected to be radioactive we have to compare the given isotopes with the ones that we find the in the periodic table.

(A) Ti:

Isotope ----> atomic mass = 48 atomic number = 22

Periodic table ---> average atomic mass = 47.9 atomic number = 22

(B) Sr:

Isotope ----> atomic mass = 88 atomic number = 38

Periodic table ---> average atomic mass = 87.6 atomic number = 38

(C) Os:

Isotope ----> atomic mass = 192 atomic number = 76

Periodic table ---> average atomic mass = 190.2 atomic number = 76

(D) Pu:

Isotope ----> atomic mass = 244 atomic number = 94

Periodic table ---> average atomic mass = 244 atomic number = 94

If we take a look at them we will see that the only one that is different is osmium. The atomic mass of the isotope is 192 amu, that means that this isotope has 2 more neutrons than the average atom of the element. So we can expect that it could be radioactive.

Answer: C. Os

The symbol that of sodium atom that will be obtained by adding one proton to 23Na is 24Na.

Isotope is any of two or more forms of an element where the atoms have the same number of protons, but a different number of neutrons within their nuclei.

Thus, isotopes have the same atomic number but a different mass number.

Isotopes of the same element have atoms with the same number of protons but different numbers of neutrons.

Examples of isotopes are Carbon-12 and Carbon-14 where one posseses 6 neutrons and the other possesses 8 neutrons.

According to this question, an isotope of sodium has a formula of 23Na. This means that when a proton is added to the isotope, the formula of the sodium isotope will change by adding 1 to the mass number.

Therefore, the formula of the isotope will change from 23Na to 24Na.

Learn more about isotope at: https://brainly.com/question/27475737

#SPJ1

Option (c) is correct. The number of neutrons will not be find in the periodic table.

Periodic table is the arrangement of chemical elements. Chemical elements are arranged in rows that is called periods and columns that is called groups according to increasing atomic number. Scientists use the periodic table to refer to information about an element like atomic mass and chemical symbol. The periodic table’s arrangement also allows to discern trends in element properties including electronegativity, ionization energy, and atomic radius. We can find the name of the element, symbol, atomic weight of the element, atomic number. We can not find the number of neutrons in the periodic table. the properties of the chemical elements exhibit an approximate periodic dependence on their atomic numbers.

To learn more about Periodic Table please visit:

https://brainly.com/question/25916838

#SPJ4

Answer:

he distance to a star can be found by comparing its luminosity to its apparent brightness.

Explanation: A star that is far away will be very dim compared to its luminosity. So it proves that  the ratio of its luminosity to apparent brightness will be greater than for a nearby star.

The major elimination product obtained from the reaction of OCH3 with NaOCH3 and MeOH is (B).

The reaction is a type of elimination reaction known as an E2 reaction, which is characterized by the elimination of two substituents from a molecule in a single, concerted step. In this reaction, the strong base NaOCH3 removes a proton from OCH3, creating a carbocation that is stabilized by the presence of MeOH. The carbocation then undergoes a 1,2-elimination reaction, resulting in the loss of the MeO- group and the H+ ion to form the alkene (B) 2. The elimination of these substituents occurs in a single step and is accompanied by a concerted change in bonding and geometry, resulting in the formation of the major elimination product.

Learn more about elimination product:

brainly.com/question/15242365

#SPJ4

Answer:

The sun is at the (edge) of our solar system

and is much (hotter) than anything else in the solar system (95%) of the entire mass of the solar system is contain in the sun

The 95% confidence interval estimate for the mean wake time with the drug treatment is between 76.6 min and 89.6 min.

The 95% confidence interval estimate is calculated based on the sample mean and the standard deviation. In this case, the sample mean wake time after treatment is 83.1 min, and the standard deviation is 20.7 min. With these values, we can construct the confidence interval estimate.

The formula for calculating the confidence interval estimate is:

CI = sample mean ± (critical value * standard deviation / square root of sample size)

Using a 95% confidence level, the critical value is 1.96. The sample size in this case is 21.

Plugging in the values:

CI = 83.1 ± (1.96 * 20.7 / √21)

Simplifying the equation:

CI = 83.1 ± 8.08

Therefore, the 95% confidence interval estimate for the mean wake time with the drug treatment is between 76.6 min (83.1 - 8.08) and 89.6 min (83.1 + 8.08).

This result suggests that the mean wake time before the treatment, which was 105.0 min, is outside the confidence interval estimate. The confidence interval estimate does not include the value of 105.0 min, indicating that the mean wake time with the drug treatment is significantly different from the mean wake time before the treatment.

Learn more about confidence interval

brainly.com/question/13067956

#SPJ11

ANSWER

EXPLANATION

Given that

The number of moles lithium bromide is 5.5 moles

Firstly, write a balanced equation for the reaction

Find the number of moles of bromine using stoichiometry ratio

Let x represents the number of bromine

The volume of solution that contains 7.30 g of KH₂AsO₄ is 0.470 L or 470 mL.

To find the volume of solution that contains 7.30 g of KH₂AsO₄, we need to use the following formula:

1. First, we need to convert the mass of KH₂AsO₄ from grams to moles. The molar mass of KH₂AsO₄ is 194.039 g/mol, so:

7.30 g / 194.039 g/mol = 0.0376 mol

2. Now we can use the formula to find the volume of solution:

volume = 0.0376 mol / 8.00×10−2 M = 0.470 L

Therefore, the volume of solution that contains 7.30 g of KH₂AsO₄ is 0.470 L or 470 mL.

Learn more about volume of solution at: https://brainly.com/question/28564792

#SPJ11

Answer:

b atoms

Explanation:

everything is made up of atoms

The filament electron must have 69.5 keV of energy or more to remove a k shell electron.

When orbital electrons of target atoms are removed from their shell and outer shell electrons fill inner shell vacancies. To fill this vacancy, the outer shell electron releases some of its potential energy as a characteristic photon.

when filament electrons miss all the orbital electrons of the target atoms and interact with the nuclei . The attraction of the filament electron of the nucleus causes it to slow down and change direction. the resultant loss of energy is given off as a brems photon.

The shells involved and named for the shell being filled.

Learn more about photons here https://brainly.com/question/23180082

#SPJ4

Answer:

water

Explanation:

because it's capable of dissolving more substances

Answer:

B. water  It can dissolve more substances

Explanation:

5.29 x 10-9 was found to be the constant of acid dissociation of an unknown weak acid HA

The constant of acid dissociation (Ka):

Ka (also known as acidity constant or acid-ionization constant) is a quantitative measure of the strength of an acid in a solution.

The following formula determines how to calculate:

K a = [ H 3 O + ] × [ A − ] / [ H A ]

Calculations :

[HA]=2.5×10−2M

Since pH= -log[H3O+]

So [H3O+] = 1.15 x 10-5 M

HA dissolves as follows :

HA + H2O ⇌ A- + H3+

[H3O+] = [A-] = 1.15 x 10-5 M

[HA] = 2.5 x10-2 M

Ka = [H3O+] x [A-] / [HA]

Ka = (1.15 x 10-5)2 / 2.5 x 10-2

Ka = -5.29 x 10-9

For more information on acid dissociation constant, visit :

https://brainly.com/question/4363472

#SPJ4

Answer:

Option D) Compound B may have a lower molecular weight.

Explanation:

Compound A and B are standing at the same temperature yet compound A is evaporating more slowly than compound B.

This simply indicates that compound B have a lower molecular weight than compound A.

This can further be seen when gasoline and kerosene are placed under same temperature. The gasoline will evaporate faster than kerosene because the molecular weight of the gasoline is low when compared to that of the kerosene.

Answer:

a

Explanation:

Mass number = No of protons + No of neutrons

Atomic number = No of protons

Mass number = 46 (from question)

Atomic number of Ca = 20

therefore:

46 = 20 + no of neutrons

no of neutrons = 26

Answer:

When the bell is rung the switch closes allowing electricity to flow making the hammer hit the bell, making the sound to alert people in the house.

Explanation:

Cells have distinct and different jobs and functions in the body.

The murder took place approximately 851.2 years ago.

Based on the isotope's half-life, we must determine the age of the remains.

90% of the normal amount being present in the remains means that 0.90 of the isotope is still present.

The equation for radioactive decay can be used:

fraction remaining =\((1/2)^(^n^/^t^)\)

Where

We can rearrange the formula to solve for the number of half-lives (n):

n = (log base 0.5) (fraction remaining)

Using the given fraction remaining of 0.90:

n = (log base 0.5) (0.90)

n ≈ 0.152

Since the number of half-lives is a fraction, we can convert it to years by multiplying it by the half-life:

time elapsed = n * t

time elapsed ≈ 0.152 * 5600 years

time elapsed ≈ 851.2 years

So, the murder took place approximately 851.2 years ago.

Learn more about radioactive decay here : brainly.com/question/27420492

#SPJ4

Ni²⁺ is the only ion on the list that can exist as both a high-spin and a low-spin octahedral complex. The correct option is B.

An electrostatic model called the crystal field theory (CFT) assumes that the metal-ligand connection is ionic and results only from electrostatic interactions between the metal ion and the ligand. When dealing with anions, ligands are viewed as point charges, and when dealing with neutral molecules, as dipoles.

The crystal field splitting theory predicts that some transition metal ions can exist as either high-spin or low-spin octahedral complexes, depending on the magnitude of the crystal field splitting parameter (Δ) relative to the pairing energy (P).

Of the ions listed, the only one that could exist as either a high-spin or a low-spin octahedral complex is Ni²⁺ (B).

Mn²⁺ (A) is a d⁵ ion and will always form a high-spin octahedral complex due to its large number of unpaired electrons.

Sc³⁺ (C) is a d⁰ ion and does not form octahedral complexes with ligands.

Cu²⁺ (D) is a d⁹ ion and typically forms a low-spin octahedral complex due to the stability of the half-filled d⁹ configuration.

Zn²⁺ (E) is a d¹⁰ ion and does not have any unpaired electrons to undergo spin pairing, so it will always form a low-spin octahedral complex.

Therefore, the correct answer is B) Ni²⁺.

To know more about crystal field theory here

brainly.com/question/23840749

#SPJ4

Answer:

We in daily life use technology to pay virtually through virtual wallets, work at home, purchase packages to travel abroad, many businesses handle virtual advertising, that is why it is called the new "market window" to social networks or internet pages, university universities playful methods through virtual campuses or virtual classes.

The serious impact is very great since many of the activities of daily life change, and they will return to being as before the technology affected in our lives, reversing customs and technological generations.

The new technologies are: computer science, engineering, arquetectonica, scientific, industrial, commercial ... Where a fourth industrial revolution arises where many processes that were carried out by humans today would be automated by computers or technological devices that improve market efficiency, of consumption and industrialization.

Explanation:

In addition, new technologies are those that are based on electronic devices that are based on social communication, the development of social networks and technology based on global communications.