The pressure of a sample of helium in a 1.00-L container is 0.988 atm. What is the new pressure if the sample is placed in a 2.00-L container?

Answer:

A C D

on edg 2021

Explanation:

The answers are:

Answer:

0.402 moles

Explanation:

1 mole NaCl/58.44g Nacl ×23.5g NaCl

grams get cancelled out and you are left with moles

Answer:

They are the same

I did the activity

Both reaction have same energy. nergy is always assigned based on its nature once it has been transmitted.

Energy is the ability to perform work in physics. It could exist in several different forms, such as potential, kinetic, electrical, chemical, thermal, electrical, radioactive, etc. Additionally, there is heat and work, which is energy being transferred form one body to other. Energy is always assigned based on its nature once it has been transmitted.

Motion is a property of all energy types. For instance, if a body is moving, it possesses kinetic energy. Even while at rest, a tensioned object like a spring or bow has the ability to move; this is because of its design, which includes potential energy. Both reaction have same energy.

Therefore, both reaction have same energy.

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Answer:

Covalent bonds

Explanation:

Answer:

reverse fault

Explanation:

A reverse fault takes place when two earth's crust pieces are pushed together.The location at which the collision between the two tectonic plates takes place is called a convergent boundary.

Answer:

These predictions are likely to be valid and should be needed.

Explanation:

Meteorologist made predictions about weather of a particular area on the data they received from the satellite. Meteorology is a branch of science in which we study about the atmosphere. It is mainly used for the forecasting of weather and meteorologists are those people or scientists who study the weather and research on different scales or instruments of weather.

The given question is incomplete. The complete question is :

What is the net ionic equation for the following reaction?

[tex]H_2CrO_4+Ba(OH)_2[/tex]

Answer : The spectator ions are [tex]Ba^{2+}[/tex] and [tex]CrO_4^{2-}[/tex]

Explanation:

Neutralization is a chemical reaction in which an acid and a base reacts to form salt and water.

Spectator ions are defined as the ions which does not get involved in a chemical equation or they are ions which are found on both the sides of the chemical reaction present in ionic form.

The given chemical equation is:

[tex]2H^+(aq)+CrO_4^{2-}(aq)+Ba^{2+}(aq)+2OH^-(aq)\rightarrow Ba^{2+}(aq)++CrO_4^{2-}(aq)+H_2O(l)[/tex]

The ions which are present on both the sides of the equation are barium and chromate ions. and hence are not involved in net ionic equation.

Hence, the net ionic equation is [tex]H^++OH^-\rightarrow H_2O[/tex]

Answer:

D

Explanation:

On edge

Hey there!

Assuming you want us to balance the equation:

Zn + HCl → ZnCl₂ + H₂

Balance Zn.

1 on the left, 1 on the right. Already balanced.

Balance H.

1 on the left, 2 on the right. Add a coefficient of 2 in front of HCl.

Zn + 2HCl → ZnCl₂ + H₂  

Balance Cl.

2 on the left, 2 on the right. Already balanced.

Our final balanced equation:

Zn + 2HCl → ZnCl₂ + H₂  

Hope this helps!

Answer:Cognitive dissonance refers to a situation involving conflicting attitudes, beliefs or behaviors. ... For example, when people smoke (behavior) and they know that smoking causes cancer (cognition), they are in a state of cognitive dissonance.

Answer:

Cognitive dissonance refers to a situation involving conflicting attitudes, beliefs or behaviors. For example, when people smoke (behavior) and they know that smoking causes cancer (cognition), they are in a state of cognitive dissonance.

Explanation:

Answer:

2 elements.

Explanation:

N is your Nitrogen and H is your Hydrogen. Elements are just one specific kind of atom. You have two elements with names Nitrogen and Hydrogen. Therefore, you have two elements.

Answer:

2

Explanation:

Ammonia is composed of one nitrogen atom and 3 hydrogen atoms

N= Nitrogen

H3= 3 of Hydrogen

Answer: Acidic Solution

Explanation:

An acidic solution is one that has more hydrogen ion (H+) than OH - concentration.

The picture above shows the water cycle. In the water cycle, water travels from the land to the sky and back again. Water leaves the ocean through Evaporation and returns to the ocean through Precipitation and run-off.

Thank You ☺️ ☺️.

Answer:

A

Explanation:

Brainiest

Remember do it today start now don’t wait

Final answer:

After 7 half-lives, approximately 2.15 grams of carbon-14 will remain from the original 550-gram sample.

Explanation:

The question asks how much remains after 7 half-lives of a 550-gram sample of carbon-14. To solve this, we need to understand that each half-life reduces the amount of carbon-14 by half. So after the first half-life, we have 275 grams left, after the second half-life, we have 137.5 grams left, and so on. After 7 half-lives, we will have:

So, after 7 half-lives, we will have approximately 2.15 grams of carbon-14 remaining from the original 550-gram sample.

1. Endothermic reaction

2. Exothermic reaction

3. Exothermic reaction

Explanation:

1. Evaporation of alcohol from the skin, here the heat is absorbed by the alcohol so that it gets evaporated from the skin and it is an endothermic process. As the reaction says that, the energy is added to the system, so it is endothermic.

C₃H₈O + 5.2 kJ → C₃H₈O(g)

2. Burning of propane in a gas grill:

C₃H₈ + 5O₂ → 3CO₂ + 4H₂O + 1652 kJ.

Here energy is released or given out which is termed as exothermic reaction.

3. Oxidation of iron to form rust:

4 Fe + 3O₂ → 2 Fe₂O₃ + 2221 kJ.​

Here also energy is released along with the products, so it is termed as exothermic reaction.

Whenever energy is absorbed, the reaction is endothermic in contrast if the energy is released then the reaction is exothermic.

Answer:

endothermic

exothermic

exothermic

Explanation:

Answer:

Hexane

Explanation:

This is a simple Alkane with six cabrons therefore the prefix "Hex-" is applied. Since the molecule has no double bonds it will have the ending "-ane"

Answer:

Hexane

Explanation:

Answer:

Sandy references him in a dream during hibernation as a Texas outlaw, before SpongeBob and Patrick create a game where they would fight over the titles of Pinhead Larry and Dirty Dan. SpongeBob pretends to be him at first, but at the end of the fight, Patrick is titled as Dirty Dan.

Hope it helps you

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Explanation:

Answer:

He isn't real, he's just an imaginative character from one of Sandy's dreams.

Answer:

SrCl2 + 2AgNO3 ----> Sr(NO3)2 + 2AgCl (solid)

Explanation:

SrCl2 + 2AgNO3 ----> Sr(NO3)2 + 2AgCl (solid)

Acids and bases have similarities such as being A. corrosive and B. They both have pH values lower than 7.

Acids and bases have similarities such as being corrosive, having different pH values, and being found in many foods. Acids and bases have several similarities:

Therefore, the correct answer is B. They both have pH values lower than 7.

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Answer:

to Calculate the final temperature of the water mixture using the equation T(final) = (m1_T1 + m2_T2) / (m1 + m2), where m1 and m2 are the weights of the water in the first and second containers, T1 is the temperature of the water in the first container and T2 is the temperature of the water in the second container.

To find the final temperature, use the reciprocal form of Charles's law to relate the initial and final temperatures and volumes of a gas.

In order to find the final temperature, we can use the reciprocal form of Charles's law, which relates the initial and final temperatures and volumes of a gas. The equation is T1/V1 = T2/V2, where T1 and V1 are the initial temperature and volume, and T2 and V2 are the final temperature and volume. By rearranging the equation, we can solve for the final temperature:

T2 = (T1 * V2) / V1

Example: If the initial temperature is 20°C, the initial volume is 2 liters, and the final volume is 3 liters, we can substitute these values into the equation to find the final temperature:

T2 = (20 * 3) / 2 = 30°C

Answer:

11.54 M

Explanation:

In this case, all we have to do is to apply the following expression:

M = n/V

M: molarity

n: moles

V: volume of solution in liters

In this case, we can assume that the volume of water will be the volume of solution. This is because the problem is not specifing if the moles of AgNO3 are liquid or solid, so we can make a safe assumption of the volume.

Using the expression above we have:

M = 5.54 / 0.48

M = 11.54 M

This is the molarity of solution

Answer:

the molarity of the AgNO₃ is 11.5417 mol/L

Explanation:

Given:

nAgNO₃ = 5.54 moles

V = 0.48 L

Question: What is the molarity of the AgNO₃, solution, M = ?

To calculate the molarity, the number of moles must be divided by the volume of the solution.

[tex]M=\frac{n}{V} =\frac{5.54}{0.48} =11.5417mol/L[/tex]

There will be change in the population of a species everyday. The carrying capacity is the maximum population that a given area can support. Thus the given statement is right.

The carrying capacity is defined as the maximum population, density or biomass that a specific area can support sustainably. This likely changes over time and also depends on many environmental factors, presence of predators, etc.

It is the carrying capacity which denotes the point where the population cannot grow further theoretically and it is not growing any larger. It can be increased by supplying greater amount of food, decreasing predation, raising the amount of habitat, etc.

It can be decreased by increasing predation, decreasing the amount of habitat, etc. A constant K is used to represent the carrying capacity. It is due to this the population is found to be in a stable state.

Thus carrying capacity is the maximum population that a given area can sustain.

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Reactants: Carboxylic Acid + Alcohol

Products: Ester + Water

Esters are formed in a chemical reaction called esterification, which typically involves the following reactants and products:

- Reactants:

1. Carboxylic Acid (R-COOH) - an organic compound with a carboxyl group.

2. Alcohol (R'-OH) - an organic compound with a hydroxyl group.

- Products:

1. Ester (R-COO-R') - the organic compound formed from the reaction.

2. Water (H₂O) - a byproduct of the reaction.

This reaction is often catalyzed by an acid, such as sulfuric acid (H₂SO₄).

Answer: The pressure inside the bag of potato chips in Pascal's is 109

Explanation:

Pressure of the gas is defined as the force exerted by the particles on the walls of the container. S.I unit of pressure is pascal.

Thus units of pressure can be mm Hg or atmosphere or bar or Pascal.

Given : Pressure inside the bag is the same as atmospheric pressure at the factory = 0.82 mmHg

Pressure 760 mm Hg = 101325 Pa

0.82 mm Hg = [tex]\frac{101325}{760}\times 0.82=109Pa[/tex]

Thus the pressure inside the bag of potato chips in Pascal's is 109

Final answer:

The pressure inside the bag of potato chips, sealed at 0.82 mm Hg, is equivalent to 109.324 Pascals (Pa) when converted using the factor 1 mm Hg = 133.322 Pa.

Explanation:

The pressure inside a bag of potato chips, if sealed at 0.82 mm Hg near sea level, can be converted to Pascals (Pa). As the conversion factor between mm Hg and Pa is 1 mm Hg = 133.322 Pa, we simply multiply the given pressure in mm Hg by this factor to obtain the pressure in Pascals.

To calculate the pressure in Pascals:

Multiply the pressure in mm Hg by 133.322 Pa/mm Hg.

So, the pressure inside the bag in pascals is:

Pressure in Pa = 0.82 mm Hg × 133.322 Pa/mm Hg
Pressure in Pa = 109.324 Pa

Therefore, the pressure inside the bag of potato chips is 109.324 Pascals (Pa).

Answer:

E. All of the Above

Explanation:

Because it requires all to create and reuse carbon

Answer:

Mitosis forms two daughter cells. The daughter cells will be exactly the same as the parent cell. Skin cells, liver cells, and generally all somatic cells undergo mitosis besides sex cells.

Explanation:

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Answer: The specific heat of alloy is [tex]1.23J/g^0C[/tex]

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

[tex]Q=m\times c\times \Delta T[/tex]

Q = Heat absorbed = 297 J

m= mass of substance = 15.4 g

c = specific heat capacity = ?

Initial temperature = [tex]T_i[/tex] = 5.0°C

Final temperature = [tex]T_f[/tex]  =20.7°C

Change in temperature ,[tex]\Delta T=T_f-T_i=(20.7-5.0)^0C=15.7^0C[/tex]

Putting in the values, we get:

[tex]297J=15.4g\times c\times 15.7^0C[/tex]

[tex]c=1.23J/g^0C[/tex]

The specific heat of alloy is [tex]1.23J/g^0C[/tex]

The specific heat capacity of the new alloy is approximately 1.22 J/g°C.

Calculating Specific Heat Capacity:

To calculate the specific heat capacity of a new alloy, we use the formula:

Where:

Rearranging the formula to solve for c:

Therefore, the specific heat capacity of the alloy is approximately 1.22 J/g°C.

Answer: False

Explanation:

1 Cubic centimeter (cm³) = 0.001 liter (L).

Volume of = 10 x 10 x 10 = 1000cm³

To convert cubic centimeters to liters, multiply the cubic centimeter value by 0.001 or divide by 1000.

Answer:

volume of this cube = 1000 cc which is 1 L

so true