A student made the claim that a 4 gram paintball fired from a paintball gun at 90 m/s could have about the same kinetic energy as a 1 gram bb pellet fired from a bb gun at 180 m/s do you agree or disagree with the student's claim?

Answer:

Amount of gas and Temperature

Explanation:

The graph shown depicts the relationship between amount of gas and temperature.

If we take the amount of gas to be volume, then this is a diagrammatic representation of the Charles's law.

 Charles's law states that "the volume of a fixed mass of a gas varies directly as its absolute temperature if the pressure is constant".

 The graph shown depicts a proportionality in which the higher the temperature, the more the volume of the gas occupied and vice versa.  

Answer:

the addition to solute decreases the solvent's vapor pressure. a temperature must then be applied to overcome the change

Explanation:

Answer:

long story short: A

Explanation:

Answer:

Inversely proportional.

Explanation:

The density and temperature relationship for ideal gases is mathematically written as- Density and Temperature Relationship The density and temperature relation are proportionate. That is, the density is inversely proportional to temperature.

Mass of SnF₂ produced : 35.634 g

Reaction

Sn+2HF⇒SnF₂+H₂

mol Sn (Ar 118.710 g/mol) :

\(\tt \dfrac{45}{118.710}=0.379\)

mol SnF₂ = mol Sn = 0.379

mass SnF₂ (MW=156.69 g/mol) :

\(\tt 0.379\times 156.69=59.39~g\)⇒theoretical

\(\tt \%yield=\dfrac{actual}{theoretical}\times 100\%\\\\60\%=\dfrac{actual}{59.39}\times 100\%\\\\actual=0.6\times 59.39=35.634~g\)

The required mass of water vaporized is 15.5 grams, from a 250 gram sample of water at the boiling point had 35.0 kj

Given: Mass of water (m) = 250 gHeat added (q) = 35.0 kJHeat of vaporization (ΔHvap) = 40.6 kJ/mole

To find:Mass of water vaporized (x) Formula:q = ΔHvap × nx = (q / ΔHvap) × nMass = moles × molar mass

We know that molar mass of water (H2O) = 18 g/molMoles of water vaporized (n) = (35.0 kJ / 40.6 kJ/mol) = 0.861 mol

Therefore,Mass of water vaporized (x) = 0.861 mol × 18 g/mol= 15.5  

Detailed Solution: According to the given statement,250g of water was taken at its boiling point and 35.0 kJ of heat was added to it, we need to find how many grams of water were vaporized. To solve this question, first, we need to know the heat of vaporization for water, which is 40.6 kJ/mole. It means to vaporize 1 mole of water, 40.6 kJ of heat is required.

Mass of water (m) = 250 g Heat added (q) = 35.0 kJHeat of vaporization (ΔHvap) = 40.6 kJ/molen = q / ΔHvapn = (35.0 kJ / 40.6 kJ/mol) = 0.861 molMoles of water vaporized (n) = 0.861 mol

Therefore, Mass of water vaporized (x) = 0.861 mol × 18 g/mol= 15.5 g Hence, the required mass of water vaporized is 15.5 grams.

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The freezing point of the solution is -11.8 °C.

The boiling point of the solution is 103.31 °C.

To determine the freezing point of the solution, we can use the equation:

ΔTf = Kf * m

where:

ΔTf is the freezing point depression,

Kf is the cryoscopic constant (for water, Kf = 1.86 °C/m),

m is the molality of the solution (moles of solute per kilogram of solvent).

First, let's calculate the molality (m) of the solution:

Molar mass of ethylene glycol (C2H6O2):

C = 12.01 g/mol

H = 1.01 g/mol (x 6) = 6.06 g/mol

O = 16.00 g/mol (x 2) = 32.00 g/mol

Total molar mass = 12.01 g/mol + 6.06 g/mol + 32.00 g/mol = 50.07 g/mol

Number of moles of ethylene glycol (C2H6O2) = mass / molar mass

Number of moles = 30.8 g / 50.07 g/mol = 0.615 mol

Mass of water = volume x density = 96.6 mL x 1.00 g/mL = 96.6 g

Now, let's calculate the molality:

Molality (m) = moles of solute / mass of solvent (in kg)

Molality = 0.615 mol / 0.0966 kg = 6.36 mol/kg

Now we can calculate the freezing point depression (ΔTf):

ΔTf = Kf * m

ΔTf = 1.86 °C/m * 6.36 mol/kg = 11.8 °C

To find the freezing point of the solution, subtract the freezing point depression from the freezing point of pure water (0 °C):

Freezing point = 0 °C - 11.8 °C = -11.8 °C

To determine the boiling point of the solution, we can use the equation:

ΔTb = Kb * m

where:

ΔTb is the boiling point elevation,

Kb is the ebullioscopic constant (for water, Kb = 0.52 °C/m),

m is the molality of the solution (same value as calculated before: 6.36 mol/kg).

ΔTb = 0.52 °C/m * 6.36 mol/kg = 3.31 °C

To find the boiling point of the solution, add the boiling point elevation to the boiling point of pure water (100 °C):

Boiling point = 100 °C + 3.31 °C = 103.31 °C

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The kind of intermolecular forces that act between a hydrogen molecule and an argon atom is dispersion forces (option D).

Intermolecular forces are the attractive forces that act between molecules or atoms. The strength of these forces determines the physical properties of substances such as boiling points, melting points, and solubility. The five main types of intermolecular forces are: Dispersion forcesDipole-dipole interactionsHydrogen bondingIon-dipole interactionsIn the given case, a hydrogen molecule is a nonpolar molecule consisting of two hydrogen atoms sharing electrons equally between them. An argon atom is also a nonpolar atom because it has a complete octet of electrons and no permanent dipole moment.

Therefore, the only intermolecular force that can act between them is the dispersion force. Dispersion forces are caused by temporary dipoles that are induced in nonpolar molecules or atoms when they come close to each other. These temporary dipoles cause the electron distribution in adjacent molecules or atoms to become distorted, leading to a weak attraction between them. Since hydrogen molecules and argon atoms are both nonpolar, they experience dispersion forces when they come close to each other. Hence, option D is the correct answer.

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The gas with the 2nd greatest atmospheric concentration is oxygen.

In Earth's atmosphere, the main keyword, the most abundant gas is nitrogen, constituting about 78% of the atmosphere. The next most abundant gas is oxygen, making up approximately 21% of the atmosphere.

Carbon dioxide and argon have lower concentrations compared to nitrogen and oxygen. Carbon dioxide makes up only a small fraction of the atmosphere, around 0.04%. Argon, although present in higher concentrations than carbon dioxide, still has a lower atmospheric concentration than oxygen.

Therefore, among the given options, oxygen has the 2nd greatest atmospheric concentration after nitrogen, making it the correct answer.

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The component depicted in the red box would be the reactants in the chemical equation 2 H2 + O2.  In this instance, the reactants are hydrogen gas (H2) and oxygen gas (O2).

A substance or molecule that takes part in a chemical reaction is known as a reactant. During the reaction, the initial substance experiences a chemical change. In the process, reactants are consumed and changed into products.

A chemical reaction is the process by which one or more chemicals, referred to as reactants, change to create one or more new compounds, referred to as products. The bonds between atoms are broken and rearranged during a chemical reaction, creating new compounds with various chemical characteristics. Atoms are neither generated nor destroyed during a chemical reaction, and the total mass and energy remain constant.

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Tungsten has a melting point of 3422 °C (6192 °F). With one of the highest melting points of any metal, tungsten is frequently used in high-temperature components including heating elements, rocket nozzles,

With an atomic number of 74, tungsten is a metallic element that is both uncommon and dense. It is one of the strongest metals known to man and has a high melting point. It is a silvery-white tint. The "heavy metal" tungsten is also referred to as is also known as wolfram. Due to its distinctive qualities, including its great resistance to corrosion and its capacity to tolerate extremely high temperatures without melting, it has a wide range of uses. Electrical connections, heating components, light bulb filaments, and aeronautical applications all often employ tungsten. In order to increase steel's strength and resistance to wear, it is also employed as an alloying element. Tungsten is regarded as a crucial

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d. The polymorphic form of fat crystals is in a glassy state is NOT true.

The statement that the polymorphic form of fat crystals is in a glassy state is not true. Polymorphism refers to the ability of a substance to exist in multiple crystal structures or forms. Lipids, including fats, can exhibit polymorphism, meaning they can crystallize in different arrangements or crystal forms.

When it comes to the texture of foods containing lipids, the polymorphic form of fat crystals does play a significant role. The specific crystal form and arrangement of the lipids can affect the texture of the food, influencing factors such as mouthfeel, creaminess, and stability.

The solid fat content versus temperature profile is an essential factor in determining texture, as stated in option a. The morphology of the crystals formed, as mentioned in option b, also plays a crucial role in texture. Option c is true as well, as foods containing partially crystalline lipids can exhibit a "plastic" texture.

However, option d is not accurate because the polymorphic form of fat crystals can exist in various states, including crystalline and semi-crystalline states, but not in a glassy state. Glassy states are typically associated with amorphous materials rather than crystalline structures.

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Explanation:

if you post the whole question I can help you

Answer:

oil and trash

Explanation:

Answer:

Just 1 i.e., Option B.

Because except for top of the molecule, all other sides are filled with a letter meaning there is one free space.

Answer:

B

Explanation:

H .  +  H .   ----->  H:H            {":" represents a covalent bond, that is, a shared pair of electrons}

A Lewis structure is a convention used to represent the covalent bonding in a molecule.   Dots or lines are used to represent

valence electrons (electrons available for bonding).  The Lewis structure for the hydrogen molecule is as follows.

     H:H  or  H-H

A bonding pair is an electron pair shared between two atoms.

A nonbonding pair (lone pair, unshared pair) is a pair of electrons that remains on one atom and is not shared.

The table that shows a proportional relationship is given as follows:

x:  4    7    8  10

y:  2  3.5  4   5

Proportional Relationship:

A proportional relationship is a relationship between two variables with equal proportions. Another way to think about them is that in a proportional relationship, one variable is always a constant value multiplied by another variable. This constant is known as the "proportional constant".

Direct Proportional Relationship:

This type describes a direct relationship between two quantities. Simply put, when one value increases, the other value also increases and vice versa.

For example, when a car speeds up, it travels a longer distance in a given amount of time. In notation, a direct proportion is denoted by y ∝ x.

Inverse Proportional:

This type describes an indirect relationship between two quantities.

Simply put, when one value increases, the other value decreases and vice versa y ∝ 1/x. For example, by increasing the speed of a car, it can travel a fixed distance in less time.

Based on the Question:

For proportional ratios, the ratio between the output and input variables must be constant for all values ​​in the table, so the correct option is given in the third table as

2/4 = 0.5.

3.5/7 = 0.5.

4/8 = 0.5.

5/10 = 0.5.

and the ratio equation: y = 0 and 5 times.

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The empirical formula for given values is C₃H₅0₄ for the given compound containing water carbon di oxide .

The empirical fοrmula οf a chemical cοmpοund in chemistry is the simplest whοle number ratiο οf atοms present in the substance. As an example, the empirical fοrmula οf Sulphur mοnοxide, οr SO, is simply SO, as is the empirical fοrmula οf disulfur diοxide.

Thus, sulphur mοnοxide and disulfur diοxide, bοth sulphur and οxygen cοmpοunds, have the same empirical fοrmula. Their mοlecular fοrmulae, which express the number οf atοms in each mοlecule οf a chemical cοmpοund, are, hοwever, nοt identical.

The arrangement οr number οf atοms are nοt mentiοned in an empirical fοrmula. Many iοnic cοmpοunds, such as calcium chlοride and macrοmοlecules, such as silicοn diοxide, use it.

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Answer: 25.0 L

Explanation:

For this problem, we will need to use Boyle's Law.

Boyle's Law: P₁V₁=P₂V₂

Since we are looking for V₂, we can rewrite the equation.

V₂=P₁V₁/P₂

The pressure should be in atm, so let's convert kPa to atm.

P₁=100 kPa=0.99 atm

P₂=200 kPa=1.97 atm

Now that we know the pressure in atm, we can plug it into the equation and solve.

\(V_{2} =\frac{(0.99 atm)(50.0L)}{1.97atm}\)

\(V_{2} =25.0 L\)

Answer:

the nucleus is made up of protons and neutrons

Answer:

Climatology

Explanation:

Climatology is the study of climate and how it changes over time. This science helps people better understand the atmospheric conditions that cause weather patterns and temperature changes over time.

The acid that will react with strontium hydroxide to produce strontium chloride in a neutralization reaction is hydrochloric acid (HCl).

When strontium hydroxide reacts with hydrochloric acid, the products formed are strontium chloride (SrCl2) and water (H2O). The chemical equation for the neutralization reaction is as follows:

Sr(OH)2 + 2HCl → SrCl2 + 2H2O

Here, Sr(OH)2 is the base (strontium hydroxide) and HCl is the acid that undergoes a neutralization reaction. The products formed are a salt (strontium chloride) and water.

Neutralization reactions are a type of chemical reaction that occurs when an acid reacts with a base to form a salt and water.

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The statement that is true among the options provided is: "An electron may fall back to the ground state in a single step or in multiple steps."

Higher energy levels are attained by excited electrons in atoms. The extra energy is finally released as light when they reach their ground state, though. The electron may return to its ground state in a single step, emitting a photon with a certain wavelength, or it may do so in several phases, releasing photons with various wavelengths.

The following additional options' statements are untrue:

Without having to leave the heat of the flame, excited electrons can return to the ground state. The flame's heat is what initially excite the electrons, yet the atom can still return to its ground state while it is still in the flame.

The claim that only one electron can be excited at a time is untrue since several electrons can be excited simultaneously.

In a flame test, each element emits a variety of recognizable light wavelengths. The energy differences between the excited states and the ground state of various electrons in the atom are reflected in the specific wavelengths that are emitted.

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The change in color from silver to gold is a chemical change.

A chemical change is one in which a new substance is formed. In this case, we can see from the video that zinc was added along with the sodium hydroxide solution and heated

Thus we know that a chemical change would cause an alteration in how the substance looks as a result of the alterations in the arrangement of atoms in the system. This rearrangement of atoms is what causes the chemical change to occur.

The color of the coin changed from silver to gold when the coin was placed on the hotplate. This could be regarded as a chemical change because an alloy was formed in the process.

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Answer:

D)

Explanation:

CH4 + 2O2 = CO2 + 2H2O

1 (L CO2)= 32.5(L CO2)

1 (CH4) = 32.5 (L CH4)

Answer:

D

explaination:

the "prop" stands for three carbons , and this is an alkane so that means it only has single bonds between carbon and hydrogen , hence the name propane

Answer:

yes

Explanation:

The molecular formula for a compound can be the same as or a multiple of the compound's empirical formula. Molecular formulas are compact and easy to communicate; however, they lack the information about bonding and atomic arrangement that is provided in a structural formula.

The number of moles of each atom present in 5 moles of Cu₃(PO₄)₂ are:

The moles of atom present in 5 moles of Cu₃(PO₄)₂ can be obtained as follow

1 mole of Cu₃(PO₄)₂ contains 3 moles of Cu.

Therefore,

5 moles of Cu₃(PO₄)₂ will contain = 5 × 3 = 15 moles of Cu

1 mole of Cu₃(PO₄)₂ contains 2 moles of P.

Therefore,

5 moles of Cu₃(PO₄)₂ will contain = 5 × 2 = 10 moles of P

1 mole of Cu₃(PO₄)₂ contains 8 moles of O.

Therefore,

5 moles of Cu₃(PO₄)₂ will contain = 5 × 8 = 40 moles of O

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The number of moles of copper, phosphorous and oxygen present in the 5 moles of Cu₃(PO₄)₂ are 15, 20 and 40 respectively.

Stoichiometry of any chemical equation gives idea about the amount of species present before and after the reaction.

Dissociation reaction of Cu₃(PO₄)₂ is shown as below:
Cu₃(PO₄)₂ → 3Cu²⁺ + 2PO₄³⁻

From the stoichiometry of the equation, it is clear that:

1 mole of Cu₃(PO₄)₂ produces 3 moles of copper atom, 2 moles of phosphorous atoms an 8 moles of oxygen atom.

5 moles of Cu₃(PO₄)₂ = produces 3×5=15 moles of Cu

5 moles of Cu₃(PO₄)₂ = produces 2×5=10 moles of P

5 moles of Cu₃(PO₄)₂ = produces 8×5=40 moles of O

Hence required moles of copper, phosphorous and oxygen are 15, 20 and 40 respectively.

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Answer:

d

Explanation:

i think

Answer:

The two balanced reactions for the combination reactions between copper (I) and sulfur are:

Cu + S --> CuS

2Cu + 3S --> 2CuS

Answer:

I believe that the answer is glucose?

Explanation:

if not, tell me the answer choices and i will help u from there

Answer:

All answers stated below:

Explanation:

1. Plate Tectonics

2. lithosphere

3. asthenosphere

4. divergent boundary

5. (not sure)

6. convergent

7. transform

8. convection