What do an atom, ion, and isotope of an element have in common?
My assignment is due today, please reply

Substance A has a higher boiling point compared to Substance B when measured on the same temperature scale.

To compare the boiling points of Substance A and Substance B, which were measured using different temperature scales, we need to convert the temperatures to a single scale for accurate comparison. The boiling point of Substance A was reported as 245 K, and the boiling point of Substance B was reported as -92°C. To convert Substance B's temperature from Celsius to Kelvin, we need to add 273.15 to the Celsius value. Thus, -92°C + 273.15 = 181.15 K. Now, both temperatures are in Kelvin: Substance A boils at 245 K, and Substance B boils at 181.15 K. Comparing the temperatures, we find that Substance A boils at a higher temperature (245 K) than Substance B (181.15 K). Therefore, Substance A has a higher boiling point compared to Substance B when measured on the same temperature scale.

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The inferences which we made about stars after two week are stars disappear and star move fast.

A star is a heavenly body made up of a brilliant spheroid of plasma held together by gravity.

Hence, the inferences which we made is stars disappear and star move fast.

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Both sides of the reaction have an identical mass and charge is called a balanced chemical equation.

An equation for a chemical reaction is said to be balanced if both the reactants and the products have the same overall charge and number of atoms for each component. In other words, both sides of the reaction have an identical mass and charge.

To satisfy the law of conservation of mass, which states that "Total mass of the products is equal to Total mass of all the reactants," is the most crucial aspect in balancing chemical equations.

The law of conservation of mass will be broken by an unbalanced chemical equation. If it does, it will suggest that mass is either created or destroyed, which is not feasible.

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1) Identify the axes.

The Y-axis refers to the energy in the reactants and in the products,

The X-axis refers to the progress of the reaction.

2) Important points in the diagram.

A: Potential energy in the reactants.

B: Activation energy. The energy that must be provided so the reaction occurs.

C: Potential energy in the products.

3) Enthalpy change calculation.

We calculate the enthalpy change using the following calculation:

4) Analysis.

If the potential energy is higher in the reactants, the enthalpy change is positive. This means the reaction is exothermic.

If the potential energy is higher in the products, the energy change is negative. This means the reaction is endothermic.

5) Diagram

The red circle marks the potential energy in the reactants and it is higher than the potential energy in the products (blue circle).

This diagram represents a positive enthalpy change.

.

The term that refers to the passing of a wave through an object is "transmission."

Transmission refers to the process by which a wave passes through an object or medium. In the context of sound, transmission occurs when sound waves travel through different substances, such as air, water, or solids.

When a sound wave encounters an object, it can be transmitted through it, reflected off it, or absorbed by it, depending on the properties of the object and the medium through which the sound is traveling.

For example, when you speak into a microphone, the sound waves produced by your voice travel through the air and are transmitted to the microphone's diaphragm. The diaphragm converts the sound waves into electrical signals, which can then be amplified and reproduced as sound through speakers.

In summary, transmission is the term used to describe the passage of a wave, such as a sound wave, through an object or medium. It is an essential concept in understanding how waves interact with their surroundings and how sound propagates through different materials.

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Answer:

aluminum i think

Explanation:

If I pipet 50.00 ml of 5.026 x 10⁻³ M solution into a 250ml volumetric flask. The concentration of the new solution is 1.0052 x 10⁻³ M.

The amount of solute contained in a specific amount of solution is the substance's concentration. Concentration in chemistry is calculated by dividing a constituent's abundance by the mixture's total volume.

The number of moles of solute in 1 L of solution, or molarity, is used to express concentrations. The concentration of any solute per unit volume of the solution is measured by molarity.

Molarity = number of moles / volume

Given that the volume is 250ml

The molarity of the pipet is 5.026 x 10⁻³

50 x 5.026 x 10⁻³ = 250 x C

C = 1.0052 x 10⁻³ M

Therefore, the concentration of the new solution is 1.0052 x 10⁻³ M.

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Note that the above prompt on Ecology draws it's analysis form a well known story which have been told visually called "The Lion King".

The answers are:

1) Biotic Factors, simply put are living things

2 examples of things from Lion King Introduction are:

3) Abiotic factors are Non -living things.

4) Examples from the introduction are:

5) the symbiotic relationship is called: commensalism.

Long-term biological interactions known as commensalism occur when individuals of one species benefit while those of the other species suffer neither advantages nor harm.

Ecology which is the study of the environment, allows  a person  to comprehend how different types of creatures coexist in various kinds of physical settings.

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Full Question:

Although part of your question is missing, you might be referring to this full question:

1) What is Biotic Factors

2) List three biotic factors from the Lion King introduction

3) What is Abiotic factors?

4) List three Abiotic factors from the Lion King introduction

5) The bird riding on the tusks of the elephant feed on insects the elephant stirs up. What kind of symbiotic relationship exists between the two?

The waves that  has the greatest wavelength is Wavelength shown with 1 wavelength stretched over a long distance.

A wave could be a disturbance or variety that voyages through a medium or space, carrying vitality without transporting matter. Waves can take different shapes and happen totally different sorts of waves, counting mechanical waves and electromagnetic waves.

Mechanical waves require a medium to propagate, meaning they require a substance like water, discuss, or a strong fabric to transmit the wave. Illustrations of mechanical waves incorporate water waves, sound waves, and seismic waves. In these waves, particles of the medium sway or vibrate in a design, exchanging energy from one molecule to another.

Electromagnetic waves, on the other hand, don't require a medium and can travel through vacuum, such as in space. Electromagnetic waves comprise of electric and attractive areas swaying opposite to each other and to the heading of wave engendering. Illustrations of electromagnetic waves incorporate obvious light, radio waves, microwaves, infrared waves, bright waves, X-rays, and gamma beams.

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The sample of nitrogen gas will occupy 236.54 mL of volume at 1.05 atm pressure.

Boyle's law is the ideal law that defines the relationship between pressure and volume of gases. A law is given if the temperature is kept constant. Pressure and volume exhibit an inverse relationship.

The Boyle's Law is given as:

P₁V₁ = P₂V₂

Given,

Initial pressure (P₁) = 0.974 atm

Initial volume (V₁) = 255 mL

Final pressure (P₂) = 1.05 atm

Final volume = V₂

The final volume at 1.05 atm is calculated by substituting values in Boyle's Law as:

P₁V₁ = P₂V₂

0.974 × 255 = 1.05 V₂

V₂ =  248.37 ÷ 1.05

= 236.54 mL

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7 Valence lectrons I am pretty sure

Answer:

IM NOT TO SURE ABOUT THIS DO YOU HAVE THE DIAGRAM

Explanation:

If 100 grams of reactants completely react to form the products in a reaction, the amount of products produced will also be 100 grams.

The law of mass conservation states that in a closed system, the total mass remains constant before and after a chemical reaction. This means that the mass of the reactants is equal to the mass of the products.

To solve the given problem, the law of mass conservation can be applied by assuming that the reaction is complete.

Thus, if 100 grams of reactants completely react, it implies that the total mass of the products formed will also be 100 grams, assuming no other substances are involved in the reaction.

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The statement that, the particles are so small compared with the distances between them that the volume of the individual particles can be assumed to be zero is true.

This statement is a reasonable approximation for the behavior of particles in a gas or a dilute solution, where the individual particles are separated by relatively large distances. In these cases, the particles are typically much smaller than the average distance between them, so their volume can be assumed to be negligible.

However, in condensed phases such as liquids and solids, the particles are much closer together, and their volumes cannot be ignored.

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Answer:

For completely converting 6.34 moles of hydrogen to ammonia, 2.11 moles of Nitrogen is required.

The chemical reaction for the formation of ammonia by nitrogen and hydrogen reaction has been as follows:

For the formation of 2 moles of ammonia, 3 moles of hydrogen, and 1 mole of nitrogen s required.

The utilization of 3 moles of hydrogen requires 1 mole of Nitrogen.

So, the utilization of 6.34 moles of hydrogen requires:

3 moles Hydrogen = 1 -mole Nitrogen

6.34 moles hydrogen =  moles of Nitrogen

6.34 moles of hydrogen requires = 2.11 moles of Nitrogen.

For completely converting 6.34 moles of hydrogen to ammonia, 2.11 moles of Nitrogen is required.

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rating answer section

Answer rating5.0

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The compound

Is an acid that can be called as:

Carbonic acid.

Answer:UIHIU

A small amount of chemical splashes in Frank’s eye. What should Frank do immediately?

Explanation:A small amount of chemical splashes in Frank’s eye. What should Frank do immediately?

Answer:

56.96 grams

Explanation:

To find the mass of 1.78 moles of O2, we need to use the molar mass of O2, which is the mass of one mole of O2.

The chemical formula for O2 is O-O or simply O2. The molar mass of O2 is the sum of the atomic masses of two oxygen atoms, which can be found on the periodic table.

The atomic mass of oxygen (O) is approximately 16.00 g/mol. So the molar mass of O2 is:

Molar mass of O2 = 2 x atomic mass of O

= 2 x 16.00 g/mol

= 32.00 g/mol

Therefore, the mass of 1.78 moles of O2 is:

Mass = number of moles × molar mass

= 1.78 mol × 32.00 g/mol

= 56.96 g

So the mass of 1.78 moles of O2 is 56.96 grams.

The amount of heat energy produced when 1 g of hydrogen and 2 g of nitrogen are reacted, is -6.61 KJ

First, we shall obtain the limiting reactant. Details below:

3H₂ + N₂ -> 2NH₃

From the balanced equation above,

28 g of N₂ reacted with 6 g of H₂

Therefore,

2 g of N₂ will react with = (2 × 6) / 28 = 0.43 g of H₂

We can see that only 0.43 g of H₂ is needed in the reaction.

Thus, the limiting reactant is N₂

Finally, we the amount of heat energy produced. Details below:

3H₂ + N₂ -> 2NH₃ ΔH = -92.6 KJ

From the balanced equation above,

When 28 grams of N₂ reacted, -92.6 KJ of heat energy were produced.

Therefore,

When 2 grams of N₂ will react to produce = (2 × -92.6) / 28 = -6.61 KJ

Thus the heat energy produced from the reaction is -6.61 KJ

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Answer:

telescopes and microscopes both use lenses

The following are categorized into polar or nonpolar molecules:

a) Beryllium chloride (BeCl₂) is a nonpolar molecule. The Be-Cl bond is polar due to the electronegativity difference between beryllium and chlorine, but the molecule is linear with the two polar bonds pointing in opposite directions, resulting in a net dipole moment of zero.

b) Hydrogen sulphide (H₂S) is a polar molecule. The H-S bond is polar due to the electronegativity difference between hydrogen and sulfur, and the molecule has a bent shape, resulting in a net dipole moment that is not zero.

c) Sulphur trioxide (SO₃) is a nonpolar molecule. The S-O bonds are polar due to the electronegativity difference between sulfur and oxygen, but the molecule is trigonal planar with the three polar bonds pointing in different directions, resulting in a net dipole moment of zero.

d) Water (H₂O) is a polar molecule. The H-O bond is polar due to the electronegativity difference between hydrogen and oxygen, and the molecule has a bent shape, resulting in a net dipole moment that is not zero.

e) Trichloromethane (CHCl₃) is a polar molecule. The C-Cl bonds are polar due to the electronegativity difference between carbon and chlorine, and the molecule has a tetrahedral shape, resulting in a net dipole moment that is not zero.

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A semipermeable membrane is placed between the following solutions. Solution D will increase in volume.

What is volume?

Volume is a measure of the amount of space an object or substance occupies. It is most commonly measured in cubic units, such as cubic inches or cubic centimeters. Volume is a calculation of the 3-dimensional amount of space enclosed by an object or substance, and is typically found by calculating the area of one side of the object or substance and multiplying it by the object's height. Volume can be used to measure solid objects, liquids, and gases. It can also be used to measure the amount of material present in a space, such as the amount of water in a swimming pool or the amount of air in a room.

This is because the semipermeable membrane will allow the solvent (water) to move from the solution with a lower concentration of solutes (solution C) to the solution with a higher concentration of solutes (solution D), increasing the volume of solution D.

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Answer:

Explanation:

liquid

Answer:

4.1843 x 10²² atoms Pt

Explanation:

To find the number of platinum (Pt) atoms, you need to (1) convert grams to moles (using the atomic mass) and then (2) convert moles to atoms (using Avogadro's number). It is important to arrange the conversions in a way that allows for the cancellation of units. The final answer should have 5 sig figs to match the amount of sig figs in the given value (13.555).

(Step 1)
Atomic Mass (Pt): 195.08 g/mol

 13.555 grams Pt                1 mole
---------------------------  x  -------------------------  =  0.069484 moles Pt
                                        195.08 grams

(Step 2)

Avogadro's Number:

6.022 x 10²³ atoms = 1 mole

 0.069484 moles Pt             6.022 x 10²³ atoms
---------------------------------  x  ---------------------------------  =  4.1843 x 10²² atoms Pt
                                                        1 mole

Answer:

0.085 moles of  N₂O₅ are needed

Explanation:

Given data:

Mass of NO₂ produces = 7.90 g

Moles of N₂O₅ needed = ?

Solution:

2N₂O₅       →     4NO₂  + O₂

Number of moles of NO₂ produced :

Number of moles = mass/ molar mass

Number of moles = 7.90 g/ 46 g/mol

Number of moles = 0.17 mol

now we will compare the moles of NO₂   with N₂O₅.

                NO₂          :       N₂O₅

                  4            :          2

                0.17          :         2/4×0.17 = 0.085 mol

Thus, 0.085 moles of  N₂O₅ are needed.

The maximum mass of hydrogen sulfide that can form is 17.01 g.

What is Limiting Reagent?

A limiting reagent, also known as a limiting reactant, is the substance that is completely used up in a chemical reaction and limits the amount of product that can be formed. It is the reactant that is present in the smallest stoichiometric amount and, as a result, determines the theoretical yield of the reaction. The other reactants may be present in excess and may not be completely used up.

To determine which reactant is the limiting reagent, we need to calculate the amount of product that each reactant would produce and see which one produces less.

The balanced chemical equation for the reaction between aluminum sulfide and water is:

First, we need to calculate the amount of moles of each reactant:

moles of Al2S3 = mass ÷ molar mass = 25.00 g ÷ 150.16 g/mol = 0.1664 mol

moles of H2O = mass ÷ molar mass = 50.00 g ÷ 18.02 g/mol = 2.776 mol

Next, we need to determine the limiting reagent. From the balanced equation, we can see that one mole of Al2S3 reacts with 6 moles of H2O. Therefore, the amount of H2O required to react with 0.1664 mol of Al2S3 is:

0.1664 mol Al2S3 × 6 mol H2O/mol Al2S3 = 0.9984 mol H2O

Since we have 2.776 mol of H2O available, we have more than enough water to react with the 0.1664 mol of Al2S3. This means that aluminum sulfide is the limiting reagent.

To calculate the maximum mass of hydrogen sulfide that can form, we need to use the amount of moles of Al2S3 as the basis of our calculation. From the balanced equation, we know that 1 mole of Al2S3 produces 3 moles of H2S. Therefore:

moles of H2S = moles of Al2S3 × 3 mol H2S/mol Al2S3 = 0.1664 mol × 3 mol H2S/mol Al2S3 = 0.4992 mol H2S

Finally, we can calculate the mass of hydrogen sulfide produced using its molar mass:

mass of H2S = moles of H2S × molar mass = 0.4992 mol × 34.08 g/mol = 17.01 g

Therefore, the maximum mass of hydrogen sulfide that can form is 17.01 g.

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Answer:

D. [CO₂]

Explanation:

Let's consider the following equation at equilibrium.

CaCO₃(s) ⇄ CaO(s) + CO₂(g)

The equilibrium constant, Kc, is the ratio of the equilibrium concentrations of products over the equilibrium concentrations of reactants each raised to the power of their stoichiometric coefficients. It only includes gases and aqueous species.

Kc = [CO₂]