Neon leaks out of a container in 15. 0 minutes. The same amount of an unknown gas will leak out in 21. 2 minutes under identical conditions. What is this unknown gas? *

The hypothetical atom 3415X1534X contains B. 34 protons, and E. 49 nucleons.


The given atom is represented as 3415X1534X, where the first number (34) is the atomic number and the second number (15) is the mass number.

A. 15 orbital electrons: Incorrect. The atomic number (34) represents the number of protons and also the number of electrons in a neutral atom. Therefore, there are 34 electrons, not 15.

B. 34 protons: Correct. The atomic number (34) represents the number of protons in the atom.

C. 15 protons: Incorrect. The atomic number (34) represents the number of protons in the atom, not 15.

D. 19 neutrons: Incorrect. The mass number (15) represents the total number of protons and neutrons in the atom. To find the number of neutrons, subtract the number of protons (34) from the mass number (15): 15 - 34 = -19. However, a negative number of neutrons is not possible, so this choice is incorrect.

E. 49 nucleons: Correct. The term "nucleons" refers to the total number of protons and neutrons in the atom. In this case, there are 34 protons and 15 neutrons, so there are a total of 34 + 15 = 49 nucleons.

In summary, the hypothetical atom 3415X1534X contains 34 protons and 49 nucleons.

To know more about nucleons visit:

brainly.com/question/30215426

#SPJ11

The standard potential for the given galvanic cell is +1.06 V.

To calculate the standard potential for the given galvanic cell, we need to determine the individual reduction potentials of the half-reactions and then subtract the potential of the anode (where oxidation occurs) from the potential of the cathode (where reduction occurs).

Given reduction half-reaction potentials:

Ag+(aq) + e^− → Ag(s): E∘ = +0.80 V

Ni2+(aq) + 2e^− → Ni(s): E∘ = -0.26 V

Since we have the reduction potentials for both half-reactions, we can directly calculate the standard potential for the cell:

E∘(cell) = E∘(cathode) - E∘(anode)

= E∘(Ag+(aq) + e^− → Ag(s)) - E∘(Ni2+(aq) + 2e^− → Ni(s))

E∘(cell) = +0.80 V - (-0.26 V)

= +1.06 V

Learn more about standard potential here

https://brainly.com/question/31868529

#SPJ11

Dish of Cabbage, carrot, pea, cauliflower and brinjal are the meals we could enjoy that contain only plant products.

Cabbage, carrot, pea, cauliflower and brinjal are the five different plants based meals. In these meals, vegetables are used which are the parts of plant. We know that vegetables are very healthy and nutritive which can be get from plants.

So we can conclude that dish of Cabbage, carrot, pea, cauliflower and brinjal are the meals we could enjoy that contain only plant products.

Learn more about meal here: https://brainly.com/question/25884013

#SPJ1

It's not true, no. The resultant solution will be unsaturated because it contains less KCl than the amount that will solubilize in 100 g of water at 40°C, which is 39 g, when 82 g of KCl is added to just 200 g of water.

The greatest quantity of solute that may dissolve in a given amount of solvent at a certain temperature and pressure to create a saturated solution is known as solubility. The solubility of KCl in this situation at 40°C is 39 g in 100 g of water. The solution will be unsaturated if 200 g of water are combined with 82 g of KCl at 40 °C. Because more KCl has been supplied than can dissolve in 200 g of water but less than can dissolve in 300 g of water, this has occurred (100 g for each 100 g of water).

learn more about solubility here:

https://brainly.com/question/22185953

#SPJ4

Answer:

A.

Explanation:

Two or more than two atoms with different physical or chemical properties can not combine together to form an element. Xenon(Xe ) is the least abundant element on the earth. The correct option is option A.

Element generally consist of atoms or we can atoms combine to form element. Atoms of an element is always same, means all the properties of all atoms of one type of element is same.

Oxygen, water, and nitrogen are the most abundant molecule on the earth. Xenon is the least abundant amongst all given option. Xenon belongs to noble gas family. So, Xenon is not reactive at all.  Xenon does not form any compound with any other element so its abundance on earth is very less.

Therefore,  Xenon(Xe ) is the least abundant element on the earth. The correct option is option A.

To know more about element, here:

https://brainly.com/question/8460633

#SPJ2

Answer:

They can form covalent bond with other atoms

The correct statement is "Strong bases are good electrolytes because they completely dissociate in water."

Strong bases are substances that completely dissociate in water, releasing hydroxide ions (OH-) into the solution. When a compound fully dissociates, it forms a high concentration of ions in the solution, making it a good electrolytes. These ions are capable of conducting an electric current when dissolved in water. Therefore, the statement that strong bases are good electrolytes because they completely dissociate in water is accurate. On the other hand, weak bases partially dissociate in water, resulting in a lower concentration of hydroxide ions and a weaker ability to conduct electricity.

To learn more about hydroxide click here brainly.com/question/31820869

#SPJ11

Answer:

A. physical change

b. physical change

c. chemical change

d. chemical change

Answer:

0.0199moles

Explanation:

The number of miles of a substance can be calculated using the formula:

Number of moles (n) = Mass (M) / Molar mass (MM)

In this question, the mass of Magnesium element (Mg) = 0.478 g while the atomic mass is 24

Therefore, number of moles of Magnesium is:

Moles = 0.478/24

Moles = 0.01992

Hence, 0.0199 moles of Magnesium are contained in 0.478 g of the element.

Answer:

It looks like A is the correct answer. Cu + H2O → CuO + H2

Explanation:

i hope this helps 229 999 0523

When we are looking at an element on the periodic table, its mass number helps us determine that the element has multiple naturally-occurring isotopes as the isotopes differ in mass.

Isotopes are those atoms which have the same no. of protons but have different no. of neutrons. Isotopes of a particular element have the same atomic no. but they have different mass numbers. The isotopes of an element are given the same position in the modern periodic table.

The mass number of an element is determined by the total no. or protons and neutrons that are present in its nucleus. For example, there are three isotopes of atom namely protium (¹H), deuterium (²H) and tritium (³H) which differ in the number of neutrons present in the nucleus.

To know more about isotopes here

https://brainly.com/question/13662697

#SPJ4

According to the given figure, The Unknown is Frequency. Rest everything given in the options can be calculated from the given informations.

The number of times that a periodic function repeats the same sequence of values during a unit variation of the independent variable.

Formula to calculate wavelength :

λ = v/f

In the question, velocity is given . But Frequency is not given.

Hence, The unknown is Frequency. Rest everything given in the options can be calculated from the given informations.

Learn more about frequency here :

https://brainly.com/question/5102661

#SPJ1

Answer: WAIT WHAT- YOU SHOULD BE MY FRIEND BTW SNAP IS kpurdham5

Explanation: ‍♂️

Answer: first of all an ionic bonds is the electrostatic force of attraction between opposite ions and and covalent bonds is the bond between different elements mostly non metals or the sharing of electrons between elements which are mostly non metals.

Explanation:  metals and non metals react to form ionic compounds

and non metals react to form covalent bonds

HOW TO DIFFERENTIATE

ionic solids the particles are charged and the forces between them are strong

covalent solids the particles are not charged and the forces between them are weak

now i would differentiate using their  properties

ionic bonds  / compounds

have high melting point

have low melting point

They are soluble in water

and they conduct electricity even when melted or dissolved in water

covalent bonds /compounds

they have low melting point

they have low melting point

They are insoluble

they do not conduct electricity

HOPE THIS HELPS!!!

It is important to stopper the flask of NaOH to prevent evaporation from affecting the concentration of the solution and to stop the NaOH solution from reacting with the carbon dioxide in the air, which affects the concentration. The correct options are A and B.

Placing a stopper on the flask is necessary in order to maintain the integrity of the solution and ensure accurate measurements. Additionally, using a stopper can help prevent contamination from outside sources and help ensure consistent results. The option D about keeping flies from getting into the flask is not relevant in most laboratory settings, but maintaining a sterile environment is important in some specific applications. Correct Options are A & B.

To know more about NaOH solution , here

brainly.com/question/14296114

#SPJ4

Answer:

36 minutes

Explanation:

You take 165/3= 55 pages per hour.

Take 198-165 = 33 pages left of the book

Take 33/55 = .6 hrs to finish the book.

Take 60(minutes in an hour)*.6= 36 minutes

4V  is the necessary voltage to power the electrolysis of molten sodium chloride.

To create sodium metal and chlorine gas, molten (liquid) sodium chloride can be electrolyzed. A Down's cell is the name of the electrolytic cell utilised in the procedure. The liquid sodium ions in a Down's cell are converted to liquid sodium metal at the cathode. Liquid chlorine ions are oxidised to chlorine gas at the anode. Below is an illustration of the reactions and cell potentials:

oxidation: \(2Cl^{-} (l)\) → \(Cl_{2} (g)\) + \(2e^{-}\)                                  E°= -1.36V

reduction: \(Na^{+} (l) + e^{-}\) → \(Na (l)\)                                    E°= -2.71V

overall : \(2Na^{+} (l) + 2Cl^{-} (l)\) → \(2Na(l) +Cl_{2} (g)\)              E°\(_{cell}\) = -4.07V

For this electrolysis to take place, the battery needs to supply more than 4 volts. The only means to obtain pure sodium metal is by this reaction, which also serves as a significant source of chlorine gas generation. Swimming pools and other surfaces are frequently cleaned and disinfected with chlorine gas.

Learn more about sodium chloride here;

https://brainly.com/question/9811771

#SPJ4

Chemical names, also known as systematic or IUPAC (International Union of Pure and Applied Chemistry) names, can provide detailed information about the structure and composition of a chemical substance, but they are not typically used as the sole identifier for a chemical.

Instead, chemicals are usually identified and tracked using unique identifiers such as CAS (Chemical Abstracts Service) numbers, which are assigned by the American Chemical Society, or EC (European Chemical) numbers, which are assigned by the European Chemicals Agency.

These identifiers provide a simple and consistent way of identifying chemicals, and can be used to access information such as properties, uses, and regulatory status.

To learn more about IUPAC :

https://brainly.com/question/30086566

#SPJ4

Answer:

Maria

Explanation:

Answer:

Maria loves Jarren more is the answer.

Answer:

Pretty sure it's Polar Covalent because they are proven to have a higher melting point than both Ionic, and Non Polar Covalent substances. That is due to the fact that it takes more energy to separate molecules from each other, which is what the molecules in Polar Covalent substances do, which is why it has a higher boiling point than the other choices.

Of the options given, lipids are considered a macronutrient.

Macronutrients are nutrients that the body requires in large amounts to function properly and maintain health. The three primary macronutrients are carbohydrates, proteins, and fats (lipids). Lipids are a type of nutrient that includes fats, oils, and cholesterol, and they are essential for the body's energy production, insulation, and the formation of cell membranes.

Vitamins and minerals, on the other hand, are considered micronutrients, which are nutrients that the body requires in smaller amounts but are still essential for proper health and functioning. Vitamins are organic compounds that help regulate various bodily functions, while minerals are inorganic substances that are necessary for proper cellular function, enzyme activity, and other bodily processes.

Therefore, option (a) lipids is the correct answer, as it is the only macronutrient among the given options.

For more such questions on macronutrient

https://brainly.com/question/30364554

#SPJ11

The amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.

To calculate the molarity of Kool Aid desired, we need to determine the number of moles of Kool Aid powder and sugar in the package. Since the molecular formula for sugar is C12H22O11, we can calculate its molar mass as follows:

Molar mass of C12H22O11 = (12 * 12.01) + (22 * 1.01) + (11 * 16.00)

= 144.12 + 22.22 + 176.00

= 342.34 g/mol

Given that the package contains 4.25 grams of Kool Aid powder, we can calculate the number of moles of Kool Aid powder using its molar mass:

Number of moles of Kool Aid powder = Mass / Molar mass

= 4.25 g / 342.34 g/mol

≈ 0.0124 mol

Similarly, for the sugar, which has a molar mass of 342.34 g/mol, we can calculate the number of moles of sugar using its mass:

Number of moles of sugar = Mass / Molar mass

= 192.00 g / 342.34 g/mol

≈ 0.5612 mol

Now, to calculate the molarity of the desired Kool Aid solution, we need to determine the volume of water. Given that 1.06 quarts is equal to 1 liter, and we have 2.00 quarts of water, we can convert it to liters as follows:

Volume of water = 2.00 quarts * (1.06 liters / 1 quart)

= 2.12 liters

To find the molarity, we use the formula:

Molarity (M) = Number of moles / Volume (in liters)

Molarity of Kool Aid desired = (0.0124 mol + 0.5612 mol) / 2.12 L

≈ 0.286 M

To prepare 65 mL of the desired molarity, we can use dilution calculations. We need to determine the volume of concentrated solution and the volume of water needed.

Let's assume the concentration of the concentrated Kool Aid solution is C M. Using the dilution formula:

(C1)(V1) = (C2)(V2)where C1 is the initial concentration, V1 is the initial volume, C2 is the final concentration, and V2 is the final volume.

Given that C1 = C M and V1 = V mL, and we want to prepare a final volume of 65 mL (V2 = 65 mL) with a final concentration of 0.286 M (C2 = 0.286 M), we can rearrange the formula to solve for the volume of the concentrated solution:

(C M)(V mL) = (0.286 M)(65 mL)

V mL = (0.286 M)(65 mL) / C M

So, the amount of concentrated solution needed is (0.286 M)(65 mL) / C M, and the amount of water needed is 65 mL minus the volume of the concentrated solution.

For more such questions on concentrated visit:

https://brainly.com/question/28564792

#SPJ8

The mutated amino acid at position 229 is arginine (Arg), and its substitution can potentially disrupt the 3D structure and alter the function of the protein due to changes in side chain properties and interactions.

Structure of the Amino Acids:

The wild-type amino acid at position 229 is not specified, so the structure cannot be provided.

The mutated amino acid is arginine (Arg), which has a side chain containing a positively charged guanidinium group.

Importance of the Position:

The specific position 229 in the protein sequence may be functionally significant, such as being involved in protein-protein interactions, binding sites, catalytic activity, or structural stability.

Without detailed knowledge of the protein, its function, and its structural context, it is difficult to determine the exact importance of this specific position.

Effects of the Mutation on Structure and Function:

The substitution of an amino acid at position 229 from the original to arginine can have various effects on protein structure and function.

Arginine's larger and positively charged side chain may introduce steric clashes or alter electrostatic interactions within the protein structure.

The mutation can potentially disrupt local or global protein folding, stability, or conformational changes, affecting its overall 3D structure.

The functional consequences of the mutation depend on the specific role of the amino acid at position 229, which can include changes in protein-protein interactions, enzymatic activity, substrate binding, or signal transduction pathways.

It is crucial to analyze the protein's structural context, available experimental data, and computational modeling techniques to gain a more accurate understanding of the specific effects of the mutation on the protein's structure and function in the given context.

Learn more about Amino Acids from the given link:

https://brainly.com/question/31872499

#SPJ11

Substance that is composed of two or more elements or compounds that are not chemically combined is called mixture.

Learn more about mixture here:

https://brainly.in/question/3346052

#SPJ9

Answer:

E.  potassium (K) and bromine (Br)

Explanation:

An ionic bond is formed between compounds with a large electronegativity difference between them. It is usually between a metal and non-metal.

Answer:

Correct answer: E.  potassium (K) and bromine (Br)

Explanation:

(Correct answer for (portal and Edmentum users too)

Hope I was helpful :) good luck on your school work and have a great day

water at the surface of the ocean can become water vapor and move into the atmosphere with little added energy from the sun through the process called evaporation. The water droplets that form are what we call clouds

Answer:

Over 96% of total global water is in the ocean, so let's start there. Energy from the sun causes water on the surface to evaporate into water vapor – a gas. This invisible vapor rises into the atmosphere, where the air is colder, and condenses into clouds.

Explanation:

A buffer of 300 ml of 100 mM Tris pH 7.8 and 250 mM NaCl can be prepared by dissolving 3.64 g of Tris and 4.27 g of NaCl in 300 ml of water, and adjusting the pH to 7.8 using 10 ml of 1 M HCl. The % v/v refers to the volume of the solute while % w/v refers to the weight of the solute.

For more questions on buffer

https://brainly.com/question/8676275

#SPJ8

The correct question would be as

How do you prepare 300 ml buffer of 100 mM Tris pH 7.8 and 250 mM NaCl? % v/v,% w/v Questions.

The concentration of H3O+ at equilibrium is 1.33×10−3 M. The concentration of HClO2 at equilibrium is 0.018 M.

As the acid-dissociation constant for chlorous acid (HClO2) is 1.1×10−2 and not 1.1×10−21.1×10−2.

(a) Using the equation for the acid dissociation constant, Ka = [H3O+][ClO2-]/[HClO2], we can rearrange to find the concentration of H3O+ at equilibrium:

Ka = [H3O+][ClO2-]/[HClO2]
1.1×10−2 = [H3O+]^2 / (1.81×10−2)
[H3O+] = sqrt(1.1×10−2 * 1.81×10−2) = 1.33×10−3 M

Therefore, the concentration of H3O+ at equilibrium is 1.33×10−3 M.

(b) Using the equation for the acid dissociation constant, Ka = [H3O+][ClO2-]/[HClO2], we can rearrange to find the concentration of ClO2- at equilibrium:

Ka = [H3O+][ClO2-]/[HClO2]
1.1×10−2 = (1.33×10−3)[ClO2-]/(1.81×10−2)
[ClO2-] = (1.1×10−2)(1.81×10−2) / (1.33×10−3) = 0.149 M

Therefore, the concentration of ClO2- at equilibrium is 0.149 M.

(c) Using the equation for the acid dissociation constant, Ka = [H3O+][ClO2-]/[HClO2], we can rearrange to find the concentration of HClO2 at equilibrium:

Ka = [H3O+][ClO2-]/[HClO2]
1.1×10−2 = (1.33×10−3)(0.149)/[HClO2]
[HClO2] = (1.33×10−3)(0.149) / 1.1×10−2 = 0.018 M

Therefore, the concentration of HClO2 at equilibrium is 0.018 M.

Learn more about equilibrium here:-

https://brainly.com/question/30694482

#SPJ11

The number of moles of the weak acid in the solution is 0.00359

Calculation:

1. The number of mole of KOH in the solution:

Given:

Molarity of KOH = 0.0849 M

Volume = 42.35 mL = 42.35 / 1000 = 0.04235 L

Mole of KOH = Mole = Molarity x Volume

                      = 0.0849 ×  0.04235

                      = 0.00359 mole

2. The number of mole of a weak acid, HA:  

Balanced equation:

HA + KOH → KA + H₂O

From the above equation, A mole of HA and a mole of KOH react together. Therefore,

0.00359 moles of HA will also react with 0.00359 moles of KOH.

0.00359  moles of base use = 1/1 x 0.00359 = 0.00359 moles of HA

Thus, there are 0.00359 moles of a weak acid in the solution.

Learn more about the moles of the weak acid here,

https://brainly.com/question/23087833

#SPJ4