Help me pretty please

The number of molecules on 1 mole of oxygen has been \(6.023\;\times\;10^2^3\) molecules. Thus, option B is correct.

The molecule has been the smallest unit of the compound. It has been the repeating unit to form the compound.

The molecule has been formed with the combination of the elements in the fixed proportion.

The number of molecules in a mole of sample has been given by Avogadro's law. According to this, the number of molecules in a mole of sample has been equivalent to the Avogadro number.

The value of Avogadro number has been \(6.023\;\times\;10^2^3\).

Thus, the one mole of sample has been consisted of \(6.023\;\times\;10^2^3\) molecules.

The number of molecules on 1 mole of oxygen has been \(6.023\;\times\;10^2^3\) molecules. Thus, option B is correct.

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Answer:

Answer in picture    its B

Explanation:

Answer:

c

Explanation:

in kc we only consider gases and aquas not solids and liquids

Newton’s second law of motion is a dot product of mass and acceleration, if you remove the table from, under the book, gravity will act on the book and pull it downwards to the centre of the earth

Newton's Second law of motion states that "the acceleration of an object depends upon two variables – the net force acting on the object and the mass of the object."

In our case the mass of the book and the force of gravity

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As carbon bonds with atoms of increasingly higher electronegativities, the polarity of the bond increases.

Electronegativity refers to the ability of an atom to attract electrons towards itself. When carbon bonds with atoms that have higher electronegativities than itself, such as oxygen or nitrogen, the electrons in the bond are more strongly attracted to the higher electronegative atom.

This results in an unequal sharing of electrons between the two atoms, creating a polar covalent bond where one atom has a slightly negative charge (the more electronegative atom) and the other has a slightly positive charge (the carbon atom). Therefore, as the electronegativity of the atom carbon is bonding with increases, the polarity of the bond also increases.

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A significant heat-trapping gas, or greenhouse gas, called carbon dioxide (CO2) is produced through the production and burning of fossil fuels like coal, oil, and natural gas as well as during wildfires and other natural processes like volcanic eruptions.

Thus, The first graph displays atmospheric CO2 measurements made recently at Hawaii's Mauna Loa Observatory without accounting for seasonal or natural variations.

The air bubbles trapped in ice sheets and glaciers over Earth's last three glacial cycles are used in the second graph to depict CO2 levels during those periods.

Human activities have increased atmospheric CO2 by 50% since the start of the industrial era (in the 18th century), bringing it to 150% of its value in 1750.

Thus, A significant heat-trapping gas, or greenhouse gas, called carbon dioxide (CO2) is produced through the production and burning of fossil fuels like coal, oil, and natural gas as well as during wildfires and other natural processes like volcanic eruptions.

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The rollercoaster has a speed of 176 ft/sec. This can be converted to miles per hour. The speed is equivalent to 120 mph.

Speed is a physical quantity measuring the distance travelled by an object per unit time. Speed is a scalar quantity. The rate of speed is called velocity.

The speed can be expressed in different units. such as m/s, km/h, ft./s miles per hour etc. These units can be interconverted using specific relations.

One ft/s = 0.682 mph

then, 176 ft./s  = 0.682 × 176 = 120 mph.

Therefore, the speed of the roller coaster is 120 mph.

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liquid..................

josh has 10 g of element a and 10 g or element b. when finished with the experiment, josh has 20 g of element a and b combined. This demonstrates ' Law of conservation of mass'.

In a closed system, mass cannot be created or destroyed, but it can be changed from one form to another. Thus, mass of a system remains same before and after the reaction.

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When the electron in a hydrogen atom transitions from n, light with a wavelength of 486 nm is released.

Radio waves, light waves, and infrared (thermal) waves are examples of electromagnetic radiation that produce distinctive patterns as they move across space. Each wave is unique in its length and shape. The wavelength is the separation between peaks (high points). Therefore, when the electron in a hydrogen atom transitions from n, light with a wavelength of 486 nm is released. Radio waves, light waves, and infrared (thermal) waves are examples of electromagnetic radiation that produce distinctive patterns as they move across space. Each wave is unique in its length and shape.

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Answer:

the first one would be 160 and the second 82 :)

Explanation:

Answer:

160 and 82?

Explanation:

80 plus itself is 160 and 80 plus 2 is 82 minus 0 is 82.

Air would be the most likely candidate for the can with the greatest change in temperature

Recall that the change in the heat capacity would be related to the heat capacity.

Since it has a relatively low specific heat capacity compared to the other options listed (iron filings, water, and sand). However, it's important to note that this is a simplified explanation and there may be other factors at play depending on the specific conditions of the experiment.

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A solution at pH 1 has more hydrogen ions than a solution at pH 4. The pH of a solution refers to the hydrogen ion concentration.

The concentration of hydrogen ions and the pH of a solution are inversely proportional. This means that the higher the hydrogen ion concentration, the lower the pH, and vice versa.

A solution at pH 1 will have more hydrogen ions than a solution at pH 4.The pH of a solution is defined as the negative logarithm of the hydrogen ion concentration. The equation for calculating the pH of a solution is given as follows:

\($$pH = -\log_{10}[H^+]$$\)

In this equation, [H⁺] is the hydrogen ion concentration in moles per liter (mol/L) of solution. A change of 1 pH unit corresponds to a 10-fold change in the hydrogen ion concentration.

Therefore, if a solution has a pH of 1, it has a hydrogen ion concentration of 0.1 mol/L.

If a solution has a pH of 4, it has a hydrogen ion concentration of 0.0001 mol/L. Thus, a solution at pH 1 has more hydrogen ions than a solution at pH 4.

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Answer:

Al2 (SO4)3

2×27 + 3×(32+ 4×16)

54 + 3×(32+ 64)

54+ 3×(96)

54+ 288

=342g

BRAINLIST PLS

Answer:hey

Explanation:

Answer:

I dont understand nd also i need to message u privately

The given representation of one unit of C₆H₁₂O₆ in water is incomplete as it does not include the water molecules that are essential for the dissolution process.

In the given representation, only the C₆H₁₂O₆ molecules are shown, while the water molecules are intentionally not depicted. However, when C₆H₁₂O₆  dissolves in water, it forms a solution where C₆H₁₂O₆ molecules are surrounded by water molecules, resulting in a hydrated state.

Therefore, the representation is incomplete and inaccurate since it neglects the presence of water molecules, which play a crucial role in the dissolution and formation of a hydrated C₆H₁₂O₆ complex in water.

The question should be:

A representation of one unit of C₆H₁₂O₆ in water is shown below. (The water 12 molecules are intentionally not shown.)

(a) What is wrong with this representation?

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Lewis structure represent diagrams that depict the interactions of atoms inside molecules. Lewis structure of NF\(_3\) is given in the image.

Lewis structure, often referred to as Lewis surround formulas, Lewis dot frameworks, electrons dot structures, and Lewis electron dot structures (LEDS), represent diagrams that depict the interactions of atoms inside molecules as well as any lone pairs of electrons that may be present. the  Lewis structure of NF\(_3\) is given in the image.

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Mol He in the mixture = 2

Given

50% by mass

2.2 moles of mixture

Required

The mole number of He

Solution

50% by mass⇒ mass of He : mass of Ar = 1 : 1

Mol He = 2.2 - mol Ar

mass He = mass Ar

mol x MW He = mol x MW Ar

(2.2-mol Ar) x 4 = mol Ar x 40

8.8 - 4 mol Ar = 40 mol Ar

8.8 = 44 mol Ar

mol Ar= 0.2

mol He = 2.2 - 0.2 = 2

Answer:

Me too.  What is this for? A Lab. You are missing some kind of key info bud.

Explanation:

Answer:

OC. water and carbon dioxide

Explanation:

The equation for photosynthesis is Carbon dioxide plus water plus light energy yields sugar (glucose) and oxygen

Answer:

Water and carbon dioxide

Explanation:

We learned this in Grade 2.

Sodas typically contain flavorings, coloring agents, sugar, and carbon dioxide dissolved in water, so the best term to describe this would be aqueous solution.

Aqueous solutions are the solutions that contain liquid water in them as the solvent that is used to dissolve the various solutes.

When we mix this sugar, flavorings, coloring agents, and carbon dioxide together, we have the aqueous solution of soda.

The word aqueous, which is derived from the Greek aqua, denotes that it is dissolved in or related to water.

It is shown in chemical equations by adding (aq) to the relevant chemical formula.

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Complete Question

Sodas typically contain sugar, flavorings, coloring agents, and carbon dioxide dissolved in water. The best term to describe this mixture would be _____.

A) an aqueous solvent

B) an aqueous solution

C) a solution

D) a solvent

E) a solute

Considering the definition of chemical reaction, the process in which atoms rearrange to form new substances is chemical reaction.

A chemical reaction is the way in which one substance reacts with another. So, chemical reactions are thermodynamic processes of transformation of matter in which reactants or reactants intervene, which change significantly in the process, and can consume or release energy to generate two or more substances called products.

In a chemical reaction, chemical bonds between atoms are broken and new bonds are formed. In other words, for a specific product to be formed from a reactant, it is necessary to break bonds that hold them together and reorganize structures, forming new bonds and forming other substances.

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Toner particles are composed mostly of plastic, which allows them to be melted to the page. The option c is coorect.

The plastic used in toner particles is typically made from a type of polyester called styrene-acrylic. This plastic has a low melting point, which allows it to be melted by the heat of the printer and fused to the paper.

In addition to plastic, toner particles may also contain carbon black, which is used to give the toner its black color.

Other colors of toner may contain different pigments to produce the desired color. Overall, the plastic composition of toner particles plays a crucial role in the printing process, allowing the toner to adhere to the page and produce high-quality prints.

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Answer:

in an ionic bond, atoms lose valence electrons and become positively charged

Explanation:

To clarify, the atom that loses the electrons becomes a positively charged ion (cation), and the atom that gains them becomes a negatively charged ion (anion).

A is the correct answer of above question

Answer: Well to begin with Hydroponics provides the exact needs to the plants appropriately; this simply means that plants will grow faster depending on their genetics and also compared to a plant grown to the normal soil, hydroponic plants grow faster and appear to be much healthier.

Here are some reasons why:

Space Savings. Hydroponics saves an incredible amount of space compared to traditional soil gardening.

Hydroponics Saves Water.

No Weeding Necessary.

Less Pests and Diseases.

The cost category that would most likely use the number of orders placed with suppliers as its allocation base is C. Purchasing.

In many organizations, the purchasing department is responsible for managing the procurement of goods and services from suppliers. The number of orders placed with suppliers is a relevant and practical allocation base for determining the cost of the purchasing function. By using the number of orders, the organization can allocate costs such as purchase order processing, supplier relationship management, and supplier evaluation and selection to the purchasing department.

Tracking the number of orders provides a direct measure of the workload and activity level of the purchasing department. It allows the organization to assign costs to the purchasing function based on its actual usage and helps in evaluating the efficiency and effectiveness of the department. Other cost categories such as personnel, maintenance and repairs, and accounting may have different allocation bases that are more appropriate for capturing the cost drivers specific to those functions.

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Answer:

50g

Explanation:

one half year later, you would have half of what you originally had so

100g/2 = 50g

A pollutant decays with a first order rate constant of 0.726 min⁻¹ . The half life of the pollutant will be 0.95 minutes.

Half -life of a chemical reaction is defined as , " the time taken for the concentration of a given reactant to reach half or 50% of its initial concentration" .

Half life of a first order reaction is given as

t(1/2) = 0.693/ K

where K is the rate constant.

given,

here, rate constant is k= 0.726 min⁻¹

therefore, half life of the pollutant:

t(1/2) = 0.693/ 0.726 min⁻¹

t(1/2) =0.95 min

Thus, the half-life of the pollutant is 0.95 minutes

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