a mixture of three noble gases (he, ne and ar) is confined to a 4.8 l container at 34 oc. the he exerts a pressure 2.23 atm, the ne exerts a pressure of 1.22 atm and the ar exerts a pressure of 3.90 atm. what is the total pressure in the container? atm what is the mole fraction of ne?

In the human body, the molecules NH2CH2COOH, C6H12O6, and CH3(CH2)16COOH form various types of chemical bonds. These bonds include covalent bonds, hydrogen bonds, and ionic bonds.

NH2CH2COOH, also known as glycine, is an amino acid. It forms covalent bonds within its structure and can also participate in hydrogen bonding when interacting with other molecules.
C6H12O6, or glucose, is a simple sugar molecule. Its structure consists of covalent bonds between carbon, hydrogen, and oxygen atoms. Additionally, glucose can form hydrogen bonds with water and other molecules when in solution.
CH3(CH2)16COOH, or stearic acid, is a long-chain fatty acid. It forms covalent bonds within its structure, and the carboxyl group at the end of the chain can form hydrogen bonds or ionic bonds when it loses a proton.
These various types of bonds allow these molecules to interact with other molecules in the body, supporting essential processes such as energy production, protein synthesis, and cellular function.

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Answer:

Molecules that contain dipoles are called polar molecules and are very abundant in nature. For example, a water molecule (H2O) has a large permanent electric dipole moment.

so it is (D). H2O

Explanation:

Based on the nature of intermolecular forces, the molecule that can have a temporary dipole is nitrogen gas, N2.

Temporary dipoles are created when electrons revolving around the nucleus, spontaneously come into close proximity resulting in an uneven distribution of electrons, thereby creating a temporary dipole due to unbalanced charges.

Temporary dipoles can initiate weak intermolecular attraction between neighboring molecules such as van der Waal's forces.

Temporary dipoles can occur in non-polar molecules such as nitrogen gas resulting in the ability of nitrogen to be liquefied.

Therefore, the molecule that can have a temporary dipole is nitrogen gas, N2.

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Answer:

An adaptation occurs if a mutation helps an individual survive and reproduce.

Explanation:

Over generations, the mutation will become more common. An adaptation occurs if a mutation isn't passed on to offspring. Hope this helps! xx

Answer:

A radio telescope is simply a telescope that is designed to receive radio waves from space.

radio telescopes helps to study naturally occurring radio light from stars, galaxies, black holes, and other astronomical objects. We can also use them to transmit and reflect radio light off of planetary bodies in our solar system.

Answer: stronomers often scan the sky using devices called radio telescopes. What can you conclude about these devices? ... They pick up the radio waves emitted by stars.

Answer:

Touching a stove and burning your your hand

Explanation:

Conduction is one of the three methods of heat transfer (the others being convection and radiation). Conduction involves the transfer of heat via direct contact with a solid medium. In conduction, heat or thermal energy moves from the hotter region to the colder region.

In this question, an example of conduction is the act of "Touching a stove and burning your your hand". The stove is acting as the solid medium here, with the heat being transferred from the hot object (stove) to the less hot one (hand) via touch (direct contact).

Answer:

so D the answer  :/

Explanation:

Answer:

1.5 moles

Explanation:

To find the number of moles of HCl in 500 mL of a 3 M solution of HCl, we consider moles in 1 liter/ 1000 mL.

3 moles HCl is contained in 1000 mL

x moles is HCl is contained in 500 mL

\( = \frac{3 \: \times \: 500}{1000} \: moles \\ = 1.5 \: moles\)

Hence the number of moles of HCl in 500 mL is 1.5 moles.

A statement that stores the uppercase equivalent of the string referenced by the city variable is as follows:

uppercity = city.toUpperCase();

```

To store the uppercase equivalent of the string referenced by the variable "city" in the variable "uppercity," you can use the "toUpperCase()" method in Java. In the given code snippet, the "toUpperCase()" method is applied to the "city" variable and the resulting uppercase string is assigned to the "uppercity" variable.

The "toUpperCase()" method is a built-in function in Java that converts all the characters in a string to uppercase. It returns a new string with all uppercase characters, while leaving the original string unchanged. By invoking this method on the "city" variable, we ensure that the resulting uppercase string is assigned to the "uppercity" variable.

Using the "toUpperCase()" method is a convenient and straightforward way to convert a string to its uppercase form. It eliminates the need for manual conversion and provides a more concise and readable code.

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Answer:

D

Explanation:

Answer:

The products must be kept apart as the products could react spontaneously. Also, ions from the electrolyte pass through the mesh. This may include Na+ and Cl- ions if the electrolyte is maintained at a molten state.

the second option would most likely be found in a cell phone advertisement!

Answer: the answer is b

Explanation: cuz i said so

Answer:

Reactive.

Explanation:

am sure bro..…….

Because it is too reactive, sodium metal cannot be used to make sodium chloride. Since sodium is a highly reactive alkali metal, it easily interacts with other substances to form new ones.

Sodium metal interacts fast with water to produce sodium hydroxide and hydrogen gas. The metal may catch fire and burn as a result of this reaction since it is so exothermic, or heat-producing.

Sodium metal interacts fast with acids like hydrochloric acid to produce sodium chloride and hydrogen gas. However, handling this reaction can be risky due to its high exothermic nature.

There is a significant safety risk since the heat from the reaction might cause the acid to boil and spray.Boil and spatter poses a major risk to people's safety. In comparison, using sodium hydroxide to create sodium chloride is significantly safer.

When sodium hydroxide and an acid are combined, the reaction is significantly slower and less exothermic. This response is considerably simpler to manage and does not provide a significant risk to safety. Sodium hydroxide is also considerably simpler to get than sodium metal. As a result, it is the technique of choice for producing sodium chloride.

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Volume Measurement Laboratory Apparatus:

Graduated Cylinder: A cylindrical container with volume markings along its vertical axis, used for measuring liquid volumes with good accuracy.

Burette: A long, graduated tube with a stopcock at the bottom, used for precise measurement of volumes of liquids during titrations.

Pipette: A slender tube with a tapered tip used to transfer specific volumes of liquids accurately. Common types include volumetric pipettes and micropipettes.

Volumetric Flask: A flask with a precise volume marking, typically used for preparing solutions of known concentrations.

Mass Measurement Laboratory Apparatus:

Analytical Balance: A highly accurate balance used to measure the mass of solid samples or substances with high precision.

Top-loading Balance: A balance that measures the mass of larger samples or substances with slightly lower accuracy compared to an analytical balance.

Weighing Boat/Dish: A small container used to hold substances being weighed on a balance.

Weights: Standard weights of known mass used to calibrate and verify the accuracy of balances.

Fire Producers Laboratory Apparatus:

Bunsen Burner: A gas burner commonly used for heating, sterilization, and flame-related experiments.

Alcohol Burner/Spirit Burner: A small burner that uses alcohol as fuel to produce a controlled flame for heating applications.

Meker Burner: A type of gas burner that produces a hot, intense flame with multiple openings, commonly used in laboratory settings.

Safety Matches/Laboratory Matches: Matches designed to be more stable and resistant to accidental ignition, often used to light Bunsen burners and other flames safely.

It's important to note that when working with fire-producing laboratory apparatus, proper safety protocols, such as wearing protective equipment and handling flammable substances with caution, should always be followed to prevent accidents and ensure laboratory safety.

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The formula for density is given by:p= m/v Where p is the density,m is the mass and,v is the volume.We are given that the mass of the beaker and the fluid is 61.89 g. Subtracting the mass of the empty beaker (30.36 g) from the combined mass gives the mass of the fluid to be:61.89 g - 30.36 g = 31.53 g.

Converting the volume of the fluid to liters:25.0 mL = 0.025 L. The density of the fluid can now be calculated as follows:

p = 31.53 g / 0.025 L = 1261.2 g/L.

The first step when calculating density is to identify the mass and volume of the substance. In this problem, we are given the volume of the fluid in milliliters and the mass of the beaker and fluid in grams. To calculate the mass of the fluid, we simply subtract the mass of the empty beaker from the combined mass of the beaker and fluid. We then convert the volume to liters since density is expressed in units of mass/volume.To calculate the density of the fluid, we use the formula:p = m/vwhere p is the density, m is the mass, and v is the volume. Plugging in the values we have, we get:p = 31.53 g / 0.025 L = 1261.2 g/L

Therefore, the density of the fluid is 1261.2 g/L.

Given the mass of the beaker and fluid, and the volume of the fluid, we were able to calculate the density of the fluid using the formula: p = m/v. We found that the density of the fluid is 1261.2 g/L.

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Answer:

Explanation:

Here, we want to get the new volume of the gas without changing the pressure

From Charles' law, we know that temperature and volume are directly proportional

We have that as:

From the question, we have the given values (we have to convert the given temperature values to Kelvin by adding 273.15 K) as:

V1 is 7.6 L

V2 = ?

T1 is 8 + 273.15 = 281.15 K

T2 is 22 + 273.15 = 295.15 K

Substituting the values, we have that as follows:

Explanation:

2HCl+2Zn----> 2ZnCl+H2

Explanation:

HCL + Zn= zncl2 + H2

plz mark my answer as brainlist if you find it useful.

The final temperature of the drink will be 25°C when 25 mL of ice at 0°C is added to 100 mL of room temperature soda at 25°C.

When ice at 0°C is added to a soda at 25°C, heat flows from the soda to the ice, causing the ice to melt and lowering the temperature of the soda. The heat absorbed by the ice is equal to the heat released by the soda to cool down. We can use the equation for specific heat, Q = mcΔT, to calculate the heat transferred from the soda to the ice.

Given:

Mass of ice (m) = 25 g

Specific heat capacity of water (c) = 4.18 J/g°C

Change in temperature (ΔT) = 25 - 25°C = 0°C

Substituting the values into the equation:

Q = (100 g) (4.18 J/g°C) (25 - 25°C)

Q = 0 J

This means that the soda releases 0 J of energy to the ice. Therefore, the final temperature of the soda will remain the same at 25°C when 25 mL of ice at 0°C is added to 100 mL of room temperature soda at 25°C. The ice will melt into water while the soda remains at room temperature.

Therefore, the final temperature of the drink will be 25°C. The ice will melt into water, and the soda will maintain its initial temperature of 25°C.

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Answer:

When a colored chemical sample is placed on a filter paper, the colors separate from the sample by placing one end of the paper in a solvent.

Answer:

Melting-Solid-Liquid-Added

Freezing-Liquid-Solid-Removed

Vapourization-Liquid-Gas-Added

Condensation-Gas-Liquid-Removed

Sublimation-Solid-Gas-Added

Deposition-Gas-Solid-Removed

Explanation:

at room temperature substances hawks together by covalent bonds are typically in liquid form

At room temperature substances hawks together by covalent bonds are typically in liquid or gas form.

Covalent compounds are typically liquids or gases at room temperature, although the more complex and the larger the molecule, the greater the chance that it could exist as a solid.

Compounds that form from two or more nonmetallic elements, such as carbon and hydrogen, are called covalent compounds. In a covalent compound, atoms of the different elements are held together in molecules by covalent bonds. These are chemical bonds in which atoms share valence electrons.

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Water has a dynamic viscosity of 8.90 104 Pa.s.

The fluid's effective viscosity and average fluid velocity are equivalent. During fluid flow through the circular capillary, both change spatially.

The effective viscosity value is a single representative viscosity value for fluid flow under a certain set of conditions, much like the average velocity value. viscosity is the ability of a fluid (liquid or gas) to resist changing its shape or allowing nearby parts to move in relation to one another. Viscosity is a sign of flow resistance.

The fluidity, a metric indicating the ease of flow, is the reciprocal of viscosity. For instance, molasses is more viscous than water.

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Red Litmus paper turns blue

Answer:

\( Ca(OH) _2 \)

Explanation:

In lime water \( \red{\bold {RED}} \) litmus paper turns \( \blue {\bold {BLUE}} \) because lime water is alkaline.

\(formula \: for \: lime \: water : Ca(OH) _2 \\ \)

If you mix 100 g of ice at 0.00°c with 60 g of water at 60 °c, then 60 g of ice has melted. The water is cooled to 0.00°c as some of the ice melts. The ice also melted.

Ice has a melting point of 0°C, or 273K. Tungsten, which is used to create the filaments in light bulbs, is the chemical element with the highest melting point (3410°C). The temperature of the system does not rise during the melting process until after the melting point has been reached, even after all the ice has melted. Water is the primary component of the Earth's hydrosphere and the fluids of all known living things. It is an inorganic chemical with the chemical formula H2O(water) and is transparent, tasteless, odourless, and almost colourless.

H = MS(deltaT) (deltaT)

H = 100*4.184*(60-0)

H = 25104J

Now, the amount of heat needed to melt ice to 0 degrees Celsius is given by the formula delta H = 100*2.108 = 421.6J m = 24682.4/40.7*10^3 = 0.606g.

Ice melted to a total of 0.606g.

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Reaction Ni²⁺(aq) + 6NH₃(aq) ⇌ [Ni(NH₃)₆]²⁺ will experience a shift towards the products in equilibrium position when the concentration of Ni²⁺ is increased.

According to Le Chatelier's Principle: When the equilibrium is stressed, the response changes to relieve the stress. This means that adding a reactant moves the equilibrium away from the reactant to the right. Adding a product moves the equilibrium away from the product and to the left.

Equilibrium type:

As the concentration of Ni²⁺(aq) increases, the system attempts to reach equilibrium by reducing the increased coefficient according to Le Chatelier's principle. To do this, the concentration of Ni²⁺(aq) must be lowered. Therefore, it is necessary to lower the Ni²+(aq) concentration by promoting forward reaction.

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The given question was incomplete so the complete question is as follows:

Which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of Ni2+ is increased? View Available Hint(s) Which equilibrium reaction will experience a shift towards the products in equilibrium position when the concentration of is increased?

Ni(OH)₂(s)⇌Ni²⁺(aq)+2OH⁻(aq)

[Ni(H2O)₆]²⁺(aq)+3En(aq)⇌[Ni(En)₃]²⁺(aq)+6NH₃(aq)

Ni²⁺(aq)+6NH₃(aq)⇌[Ni(NH₃)₆]²⁺

NiS(s)⇌Ni²⁺(aq)+S²⁻(aq)

Answer:

The feedback mostly on the scenario mentioned is defined downwards.

Explanation:

There seem to be forces that regulate the whole mechanism as well as preserve equilibrium in every natural cycle. It is possible to divide these variables into two simple types:

The improvement throughout the natural state is attempted by negative factors as well as the positive reinforcement attempts to mitigate this improvement and approach the problem to something like the primary comfortable position.

Let's take a basic example including its process for suggestions. Users start whimpering if you get too cold. Your body continues to pump additional blood attributable to the whole shivering and indeed the temperature therefore raises. Throughout this circumstance, the temperature drop is a mechanism that serves to initiate the shivering, as well as the shivering attempts to recover the steady body’s temperature. Therefore the shivering case seems to be positive feedback that seeks to restore the primary balance.

Much the same for the landmass uplifting allows the emergence of more life above it. So, social advancement seems to be a system of negative criticism that disturbs the equilibrium. After that, the main elevation of the landform needs to regain the excess volume of degradation. So, this is indeed a tool for constructive feedback.

This question is mentioning an experiment that is not being described about the volume of the propane gas in an Erlenmeyer before the addition of water.

In this case, since no information is given, it is possible to propose a suggested procedure of how to figure it out via gas laws, specifically, the ideal gas one, since no change is decribed before the addition of water:

\(PV=nRT\)

Thus, you can solve for the volume, by dividing both sides by the pressure, so that you will get:

\(V=\frac{nRT}{P}\)

Now, to ensure a correct calculation, make sure you have the moles (divide by the molar mass of propane, 44,1 g/mol, if you were given the grams), the temperature in K (add 273.15 if you have degree Celsius), the ideas gas constant as 0.08206 and the pressure in atm, in order to have consistent units.

If you need the volume in milliliters, you will need to multiply the previous answer by 1000 in order to perform the appropriate conversion.

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Vitamin C (ascorbic acid) and the B-complex vitamins are examples of water-soluble vitamins (such as B1, B2, B3, B6, B12, and folic acid). Vitamins A, D, E, and K are examples of fat-soluble vitamins.

Micronutrients known as vitamins are crucial for maintaining excellent health. They are little needed but have a substantial impact on many body processes, including metabolism and cell proliferation. The body need 13 different vitamins in order to function properly, including vitamins A, C, D, E, K, and the B-complex (Thiamin, Riboflavin, Niacin, Vitamin B6, Folate, Vitamin B12, Biotin, and Pantothenic Acid). Each vitamin has a distinct purpose, and a lack of any one vitamin can cause a number of different health problems. To ensure optimal intake of all vital vitamins, a balanced and diverse diet is crucial. Although supplements can be taken, it is always advisable to speak with a healthcare provider before doing so.

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Comparing the rate of appearance of B and the rate of disappearance of A, we get Δ[B]/Δt = -2/3(B).

The balanced chemical equation shows that for every 3 moles of A consumed, 2 moles of B are produced. Therefore, the rate of disappearance of A is (-Δ[A]/Δt), and the rate of appearance of B is (+Δ[B]/Δt).

Since 2 moles of B are produced for every 3 moles of A consumed, the rate of appearance of B is related to the rate of disappearance of A by the ratio of their stoichiometric coefficients, which is 2/3. Therefore, we have Δ[B]/Δt = (2/3) × (-Δ[A]/Δt), which simplifies to Δ[B]/Δt = -2/3 × (-Δ[A]/Δt). Thus, the correct answer is B) -2/3.

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A chemical reaction in which bonds are created is usually associated with The consumption of energy

Consumption method using, shopping for, or consuming something. If we do not lessen our power intake, we are able to run out of fuel. Conspicuous intake is shopping for something to expose off. Consumption is associated with the verb consume, which means to eat, use, or buy.

There are four Consumption kinds of client goods. They are comfort goods, distinctiveness goods, purchasing goods, and unsought goods.

Consumption of Food intake is a periodic behavior. It is brought on at diverse moments of the day through some converging factors (time of day, want a state, sensory stimulation, social context, etc.).

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Answer:

Activation energy, in chemistry, the minimum amount of energy that is required to activate atoms or molecules to a condition in which they can undergo a chemical transformation or physical transport.