What happens when this match is struck against the side of the match box?

Answer:

C. 2

Explanation:

Is a "wave function that describes properties characteristic of no more than two electrons in the vicinity of an atomic nucleus or of a system of nuclei as in a molecule."

The molar mass of compound of magnesium chloride is 95.211 g/mole while that of ammonium sulfate is 132.14 g/mole.

Molar mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molar mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

The molecular mass and formula mass are used as synonym for the molar mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.

Learn more about molar mass,here:

https://brainly.com/question/12127540

#SPJ1

Answer:

please mark as brainliest

The mass of 3.35 x 10²⁴ molecules of propane is 24.88 grams.

To calculate the mass of 3.35 x 10²⁴ molecules of propane (C₃H₈), we need to determine the molar mass of propane and then use it to convert the given number of molecules to grams.

The molar mass of propane (C₃H₈) can be calculated by adding up the atomic masses of carbon (C) and hydrogen (H) in the molecule. The atomic mass of carbon is 12.01 g/mol, and the atomic mass of hydrogen is 1.008 g/mol.

Molar mass of propane (C₃H₈):

(3 x 12.01 g/mol) + (8 x 1.008 g/mol) = 44.11 g/mol

Now, we can use the molar mass to convert the given number of molecules to grams.

Number of molecules of propane = 3.35 x 10²⁴

Molar mass of propane = 44.11 g/mol

To convert from molecules to grams, we can use the conversion factor:

1 mole = 6.022 x 10²³ molecules

Calculating the mass in grams:

(3.35 x 10²⁴ molecules) x (1 mole / 6.022 x 10²³ molecules) x (44.11 g/mol) = 24.88 g

Therefore, the mass of 3.35 x 10²⁴ molecules of propane is 24.88 grams.

To learn more about chemical formula, here

https://brainly.com/question/32018188

#SPJ2

Answer: B.

Explanation:

The nucleus is a membrane-enclosed organelle found in most eukaryotic cells. The nucleus is the largest organelle in the cell and contains most of the cell's genetic information (mitochondria also contain DNA, called mitochondrial DNA, but it makes up just a small percentage of the cell's overall DNA content).

Hope this helps!

Answer:

nuke-leus

Explanation:

Answer:

3034 degrees

Explanation:

The arrow in a chemical equation represents the direction of the reaction. It indicates the conversion of reactants into products. The arrow points from the reactant side to the product side, symbolizing the flow of the reaction.

The purpose of the arrow is to visually represent the chemical transformation occurring in the reaction. It shows the relationship between the reactants and products and the direction in which the reaction proceeds. The arrow implies that the reactant molecules are being rearranged and transformed into new substances with different properties.

Chemical equations are used to describe the stoichiometry and balance of reactions. The arrow helps convey this information by illustrating the overall process taking place. It serves as a crucial element in understanding the reaction's composition, reaction conditions, and the substances involved.

Furthermore, the arrow also implies that the reaction can occur in both directions. In reversible reactions, the arrow can be represented as a double-headed arrow, indicating that the reaction can proceed in either direction depending on the conditions.

Know more about reversible reactions here:

https://brainly.com/question/21426719

#SPJ8

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97. The incorrect representation for a neutral atom is 36Li

To determine the correct representation for a neutral atom, we need to consider the atomic number (Z) and mass number (A) of the element. The atomic number represents the number of protons in the nucleus, while the mass number represents the sum of protons and neutrons.

Let's analyze the given representations:

36Li:

This representation suggests that the element is lithium (Li) with a mass number of 36, which is incorrect. The correct mass number for lithium is approximately 6.94.

613C:

This representation suggests that the element is carbon (C) with a mass number of 13, which is correct. Carbon has different isotopes, and 13C represents one of its stable isotopes.

3063Cu:

This representation suggests that the element is copper (Cu) with a mass number of 63, which is correct. Copper has different isotopes, and 63Cu represents one of its stable isotopes.

1530P:

This representation suggests that the element is phosphorus (P) with a mass number of 30, which is incorrect. The correct mass number for phosphorus is approximately 30.97.

Therefore, the incorrect representation for a neutral atom is 36Li, as it does not match the known properties of lithium.

For more question on atom

https://brainly.com/question/26952570

#SPJ8

If organisms cannot adapt to the changes in their ecosystem, they may move to another location. If they will not move, the species may become threatened, endangered or extinct.

Answer:

They usually die and go extinct like how polar bears are. There are of course exceptions.

Explanation:

Answer:

The median is also the number that is halfway into the set. To find the median, the data should be arranged in order from least to greatest. If there is an even number of items in the data set, then the median is found by taking the mean (average) of the two middlemost numbers.

I hope it helps

Answer:

D

Explanation:

The unit used to measure atomic mass is the atomic mass unit (amu). A single amu is equivalent to 1/12 the mass of an atom from the carbon-12 isotopIsotopes with different numbers of protons and neutrons will have an actual mass slightly different from the atomic mass calculated in atomic mass units.

Reaction 2 is 3.67 times faster compared to reaction 1

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

To compare the rate of reaction 2 to reaction 1, do the following:

Comparison = Reaction 2 / Reaction 1

Reaction 2 / Reaction 1 = 0.44 / 0.12

Reaction 2 / Reaction 1 = 3.67

Cross multiply

Reaction 2 = 3.67 × Reaction 1

Thus, we can conclude that reaction 2 is 3.67 times faster than reaction 1

Learn more about rate of reaction:

https://brainly.com/question/1906721

#SPJ1

1234y5934y89524y5284952y542

Answer:

The plant and animal cells are eukaryotic and contain well developed cellular organelles. 

The cell membrane, cytoplasm, chromosomes, and mitochondria are the structures that are present in both the plant and the animal cells. 

The cell wall and chloroplast are present only in the plant cell. 

Mitochondria

Because it is right next to the nucleau

Answer:

Explanation:

An anion is a negatively charged ion, meaning it has gained one or more electrons. A cation is a positively charged ion, meaning it has lost one or more electrons. The charge of an ion can be determined by its atomic number, the number of protons it contains, and the number of electrons it contains. An anion will have more electrons than protons and a cation will have more protons than electrons. An anion will be attracted to positive charges, while a cation will be attracted to negative charges. Anions and cations can also be compared based on their size and shape. Anions are typically larger than cations, and they often have a spherical shape. Cations, on the other hand, are typically smaller and have a more angular shape.

Answer:

20 mL OF 6 M HYDROCHLORIC ACID WILL BE NEEDED

Explanation:

M1 V1 = M2 V2

M1 = Molarity of sodium hydroxide = 3 M

V1 = volume of sodium hydroxide = 40 mL

M2 = Molarity of hydrochloric acid = 6 M

V2 = Volume of hydrochloric acid = unknown

Rearranging the equation, we have:

V2 = M1 V1 / M2

V2 = 3 * 40 mL / 6

V2 = 120 / 6

V2 = 20 mL

To precipitate the benzoic acid by 6 M of hydrochloric acid, 20 mL volume will be needed.

Answer:Make sure vyour formatting is clear and easy to understand. Remember, it’s all about helping others understand the answer.

Explanation:

Make sure your formatting is clear and easy to understand. Remember, it’s all about helping others understand the answer.

Here is a graph of the image of HIJ after the given sequence of transformations:

, ,

,

,s

,

,

,

      ,    

         ,sd  

       ,      

        ,    

          ,  

        ,      

          ,sd

         ,      

         ,

           ,

            ,        

              ,S        

               ,      

                 ,    

                    ,  

                       ,D                                                            

     ,            

         ,          

            ,

                ,        

                      ,

                 ,          

                   ,

                        ,    

            ,     ,y        

                  ,-1

The steps I performed:

Answer:

If by gas you mean oxygen it is O.

The new Vapor pressure of the dietheylether is  6.52 atm.

We have to note that the vapor pressure would have to do with the ease with which the substance can be converted from liquid to vapor. In this case we can see that we have about two different temperatures and we are trying to obtain the vapor pressure at each of the temperatures that have been given.

Using the formula;

ln(P2/P1) = -ΔHvap/R(1/T2 - 1/T1)

P2 = final pressure

P1 = initial pressure

ΔHvap = Enthalpy of vaporization

R = constant

T = Temperature

ln(P2/0.703) = -29.1 * 10^3/8.314(1/354 - 1/298)

ln(P2/0.703) =  -3651.3(0.0028 - 0.0034)

ln(P2/0.703) = 2.19

(P2/0.703)  = e^2.19

P2 = e^2.19 * 0.73

P2 = 6.52 atm

It has a vapor pressure of about  6.52 atm.

Learn more about vapor pressure:https://brainly.com/question/25715932

#SPJ1

B) Al because the large difference between the third and forth ionization energies.

What is ionization energy?

Ionization energy (also called ionization potential) is the amount of energy required to remove an electron from an isolated atom or molecule in chemistry and physics. There is an ionization energy for each successively removed electron. However, the ionization energy associated with the removal of the first (most loosely held) electron is most commonly used.

The ionization energy of a chemical element, expressed in joules or electron volts, is usually measured in a discharge tube in which rapidly moving electrons produced by an electric current collide with gas atoms of the element, releasing one of them will be electronic.

B) Al because the large difference between the third and forth ionization energies.

To know more about  ionization energies visit:

https://brainly.com/question/20658080

#SPJ4

Answer:-18 KJ

Explanation:

The second reaction is obtained from the first when the first reaction is divided by 2 and reversed. The enthalpy change for the second reaction is -18 kJ.

The term enthalpy is defined as the heat absorbed or evolved in a reaction. It could be positive or negative.

If we look at the two reactions as shown in the question, we can see that the second reaction is obtained from the first when the first reaction is divided by 2 and reversed.

Hence, it the follows that the enthalpy change for the second reaction is -18 kJ.

Learn more about enthalpy: https://brainly.com/question/365923

The diagrams that shows the repeating groups of atoms that make up the samples which were mixed together is option D.

A chemical reaction is said to have occurred when there a rearrangement of atoms in a substance. This rearrangement of atoms in the substance leads to the formation of new substances.

In this case, we must note that the combination of reactants to be chosen must posses the atoms shown as part of the one of the end substance. The only option that satisfies this requirement is option D.

Learn more about chemical reaction: https://brainly.com/question/6876669

Answer:D

Explanation:DDDDD

The chemical formula of aspartame is C₁₄H₁₈N₂O₅ and it's relative molecular mass is 294.30 g/mol which is calculated as (12×14)+(1×18)+(14×2)+(16×5).

Molecular  mass of a compound or a molecule is defined as the mass of the elements which are present in it.The molecular mass is considered to be a bulk quantity not a molecular quantity. It is often an average of the of the masses at many instances.

The molar mass and formula mass are used as synonym for the molecular mass.It does not depend on the amount of substance which is present in the sample.It has units of gram/mole.

Molecular masses of an element are given as relative atomic masses while that of compounds is the sum of relative atomic masses which are present in the compound.In case of aspartame it is calculated as,(12×14)+(1×18)+(14×2)+(16×5)=294.30 g/mol.

Thus , relative molecular mass or molecular mass of aspartame is 294.30 g/mol.

Learn more about molecular mass,here:

https://brainly.com/question/18446366

#SPJ1

they are impacted because people loose their home due to the wreckage that has happend and landscapes are ruined due to landslides

Answer:

Well the landscape is torn up, it goes through quite a bit of damage. the plants, animals, and water are all affected by it. when a earth quake hits it destroyes most everything, houses fall into the ground and are destroyed, people die. Earthquakes destry electrical wires and many other things

Explanation:

Sorry I did not answer it full, but you can look it up online.

Considering the definition of strong acid, it dissociates completely in solution (option D) is always true of a strong acid.

An acid that completely dissociates in solution at constant temperature and pressure is called a strong acid.

In other words, strong acids are completely ionized, that is, in the ionization process they are completely transformed into cations or positive ions and anions or negative ions.

Strong acids are characterized by being very corrosive and have the ability to conduct electrical energy efficiently.

Examples of strong acids are hydrochloric acid (HCI) and hydrobromic acid (HBr).

It dissociates completely in solution (option D) is always true of a strong acid.

Learn more about strong acid:

https://brainly.com/question/21121916

https://brainly.com/question/16139183

https://brainly.com/question/17633632

#SPJ1

Answer:

This is because the proportion of light that gets absorbed is affected by the number of molecules that it interacts with. Solutions that are more concentrated have a larger number of molecules that interact with the light that enters, thus increasing its absorbance. ... This increases the absorbance.

Explanation:

look ti up

One solution will absorb more light than the other when they both had the same concentration because of Molar Absorptivity, Electronic Transitions, Path Length , Wavelength of Light, Interactions with Solvent, and Presence of Other Species.

The absorption of light by a solution is influenced by various factors, including the concentration of the absorbing species, the path length of the light through the solution, the nature of the absorbing species, and the specific wavelengths of light being used. When two solutions have the same concentration but one absorbs more light than the other, it's likely due to differences in the nature of the absorbing species and their interactions with light.

Here are some reasons;

Molar Absorptivity (Molar Extinction Coefficient): Different substances have different molar absorptivities, which indicate how strongly a particular substance absorbs light at a specific wavelength. Even at the same concentration, one substance might have a higher molar absorptivity than the other, leading to greater light absorption.

Electronic Transitions: Absorption of light often involves electronic transitions in molecules. If one solution has more molecules capable of undergoing the specific electronic transition responsible for light absorption, it will absorb more light.

Path Length and Absorption Cell: The length of the path that light travels through the solution can impact the amount of light absorbed. If the two solutions are measured in different absorption cells with varying path lengths, this can lead to different light absorption even with the same concentration.

Wavelength of Light: The wavelength of light used for measurement can affect the absorption. Some substances may have stronger absorption at certain wavelengths, so using different wavelengths might result in different absorption behaviors.

Interactions with Solvent: The solvent in which the absorbing species is dissolved can influence its absorption properties. Solvent effects such as polarity and hydrogen bonding can alter the electronic transitions and, consequently, the absorption behavior.

Presence of Other Species: Other substances present in the solution might interact with the absorbing species, affecting its absorption characteristics. This is particularly relevant if the absorbing species can form complexes or undergo reactions with other components.

To know more about concentration here

https://brainly.com/question/30862855

#SPJ3

Answer:

133.34 g/moles

Explanation:

but to make life easy it could be 133.4 g/ moles as well

Answer:

173.5 g

Explanation:

This question seems incomplete, as the power by which 10 is increased is missing. I will answer this question assuming the given number of molecules is 7.03x10²³ molecules. A different number of molecules will give a different answer, but the procedure remains the same.

First we convert the given number of molecules into moles, using Avogadro's number:

Then we convert magnesium nitrate moles into grams, using its molar mass:

The second-law efficiency of this freezer is 94.7%.

The second-law efficiency of a refrigerator or freezer is described as as the ratio of the desired cooling effect  which is the heat removed from the cold reservoir) to the energy input required to achieve this cooling effect.

The second-law efficiency of a refrigerator  formula is

η = Qc / W

we have the equation as

Qh = mCΔT = Qc

Tc = -7°C = 266 K

Th = 25°C = 298 K  and

W = Qh / (1 - Tc/Th) = Qc / (1 - Tc/Th) = 3.3 W

we have found  Qc = 3.125

W  = 3.3 W

we then substitute into the  second-law efficiency formula:

η = Qc / Wmin

η= 3.125 W / 3.3 W

η= 0.947 or 94.7%

Learn more about second-law efficiency at:

https://brainly.com/question/15025185

#SPJ1