Question (1 point)
Given the model, answer the following questions regarding effusion. The orange spheres have a greater root-mean-square speed than the blue spheres. Assume the balloon has a tiny opening for gas molecules to escape.
1st attempt
Part 1 ( 0.5 point)
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Which balloon, A or B, most accurately illustrates the effusion of a gas from the central balloon?
Calculate the relative rate of effusion for the orange to blue spheres. The root-mean-square speed for the orange spheres is 495.0m/s. The root-meah-5quare speed for the blue spheres is 380.0m/ s.

Answer:

Solution A is correct.

Explanation:

Strong acids or bases are assumed to dissociate completely when in a aqueous solution.

The biotic factor of an aquarium ecosystem is algae growing on the glass.

The abiotic factors of an aquarium ecosystem are rock structure, temperature of the water, and amount of sunlight.

The example that describes an abiotic factor interacting with a biotic factor is the amount of sunlight affecting the growth of a plant.

All the listed items in Ms. Brown's class, including gravel, grass, butterfly, sunflower, bird feeder, and flowerpots, are a part of the garden ecosystem.

An ecosystem is a community of living organisms (biotic factors) interacting with each other and with their physical environment (abiotic factors) in a specific area. It includes all the living and non-living components of the environment that interact with each other. Examples of ecosystems include a coral reef, a forest, a desert, and even an aquarium or a garden. Ecosystems can be large or small and can be found on land or in water. They are essential for the survival of living organisms as they provide food, shelter, and other resources necessary for life.

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pressure=585...

this is your answer

Answer:

Explanation:

273K

1ATM

Answer:

273 K 1 atm

Explanation:

Standard temperature and pressure (STP) is [273] K and [1] atm

Answer:

Air Pollution.

Water Pollution.

Soil/Land Pollution.

Noise Pollution.

Radioactive Pollution.

Explanation:

Answer:

Osmosis is taking place in the vessel, where a 10% solution of sodium chloride is on one side of the semipermeable membrane and a 2% solution of sodium chloride is on the other side. Osmosis is a special case of diffusion, where water moves from an area of higher concentration to one of lower concentration. In this case, water will move from the 10% solution to the 2% solution, as it has a higher solute concentration. This process is known as osmoregulation and it involves maintaining salt and water balance across membranes within the body’s fluids. The key to remember about osmosis is that water flows from the solution with the lower solute concentration into the solution with higher solute concentration. As such, in this case, water will flow from the 2% solution to the 10% solution.

Explanation:

Answer:

[tex]V=0.0333L=33.3 mL[/tex]

Explanation:

Hello there!

In this case, according to the given information, it is necessary for us remember that the molarity is calculated by dividing the moles by the volume of the solution in liters so the volume is calculated by dividing moles by the given molarity. However, we first need to calculate the mole given the mass and molar mass of the solute, H2SO4:

[tex]n=\frac{9.809g}{98.09g/mol}=0.1mol[/tex]

Thus, the volume turns out:

[tex]V=\frac{0.1mol}{3.00mol/L}\\\\V=0.0333L=33.3 mL[/tex]

Regards!

As the class is of 1 hour and  and each student uses for 6 minutes so in 1 hour 10 students will use the balance.

A scale or balance is a device used to measure weight or mass. These are also known as mass scales, weight scales, mass balances, and weight balances.

The traditional scale consists of two plates or bowls suspended at equal distances from a fulcrum. One plate holds an object of unknown mass (or weight), while known masses are added to the other plate until static equilibrium is achieved and the plates level off, which happens when the masses on the two plates are equal.

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Answer:

BOD produced per 1000kg of milk processed = (1400mg/I x 240m3) / 150000kg = 0.192mg/I

Population equivalent = (0.192mg/I x 75g) / 5 = 0.576g

Explanation:

Answer: D

Explanation:

d

The number of moles in 0.025 g of  (NH[tex]_4[/tex])[tex]_2[/tex]Cr[tex]_2[/tex]O[tex]_7[/tex] is 1.0 x 10⁻⁴moles. The word "mole" is shortened to "mol".

A mole is just a measuring scale. In reality, it's one of the International System for Units' seven foundation units (SI). When already-existing units are insufficient, new ones are created. The mole is indeed a SI unit that is used to quantify any quantity of a material. The word "mole" is shortened to "mol". Exact number of particles in one mole is 6.0221407610 23.

The levels at which chemical reactions frequently occur exclude the use of grams, yet utilizing actual numbers of atoms, molecules, or ions would also be unclear. To fill this gap between extremely small and extremely huge numbers, scientists created the mole.

number of mole of (NH[tex]_4[/tex])[tex]_2[/tex]Cr[tex]_2[/tex]O[tex]_7[/tex] = given mass / molar mass

                                                    =  0.025 / 252.07

                                                   =9.91 × 10⁻⁵moles

                                                   =  1.0 x 10⁻⁴moles

Therefore, the correct option is option D

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Answer:

2 AgNO3(aq) + K2CrO4(aq)  Ag2CrO4(s) + 2 KNO3(aq)

Explanation:

0.150 L AgNO3 0.500 moles AgNO3 1 moles Ag2CrO4 331.74 g Ag2CrO4 = 12.4 g Ag2CrO4

1 L 2 moles AgNO3 1 moles Ag2CrO4

0.100 L K2CrO4 0.400 moles K2CrO4 1 moles Ag2CrO4 331.74 g Ag2CrO4 = 13.3 g Ag2CrO4

1 L 1 moles K2CrO4 1 moles Ag2CrO4

The depression in freezing point of the electrolyte is 1.6 K. The weight of the solute added is 29.5 g. Then the molar mass of the compound is obtained to be 342.93 g/mol.

Addition of a non-volatile solute into a solvent decreases the freezing point of the solution. The depression in freezing point is calculated as follows:

ΔT =  W₂ 1000 Kf / (M W₁)

where W₂ be the mass of solute and W₁ is that of solvent, Kf is called molal depression constant. M be the molar mass of the solute.

Given ΔT = 1.6 K

W₂  = 29.5 g

W₁ = 100 g

Kf of water = 1.86 K/m

Then M = W₂ 1000 Kf / ( ΔT W₁)

M = 29.5 g× 1000 × 1.86 / (1.6 K × 100 g) = 342.9 g/mol

Thus, the molar mass of the solute is 342.9 g/mol.

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Answer:

82 gallons

Explanation:

There are 3.785 liters in one gallon. In order to get the amount of gallons, divide the amount of liters by 3.785.

310 L ÷ 3.785 L/gal = 81.89 gallons ≈ 82 gallons

Answer:

Explanation:

Hello there!

In this case, since this concentration of hydronium ions is given, we infer we may calculate that of the hydroxide ions, pH and pOH because no question was specifically given. That is why we proceed as follows:

-  pH: Here, we use this concentration to calculate the pH according to the negative logarithm:

[tex]pH=-log(3.6x10^{-2})=1.44[/tex]

Which means that the solution is acidic as the pH is less than 7.

- pOH: since the pH added to the pOH is 14, we can calculate the latter as follows:

[tex]pOH=14-1.44=12.56[/tex]

- Hydroxide concentration: Given the pOH, we apply the antilogarithm to calculate such concentration as shown below:

[tex][OH^-]=10^{-pOH}=10^{12.56}=2.75x10^{-13}M[/tex]

Keep in mind, this is an arbitrary solution because no question was provided.

Regards!

Answer:

2.5 mol/L

Explanation:

We'll begin by calculating the number of mole in 7 g of KOH. This can be obtained as follow:

Mass of KOH = 7 g

Molar mass of KOH = 39 + 16 + 1

= 56 g/mol

Mole of KOH =?

Mole = mass /molar mass

Mole of KOH = 7 / 56

Mole of KOH = 0.125 mole

Next, we shall convert 50 mL to L. This can be obtained as follow:

1000 mL = 1 L

Therefore,

50 mL = 50 mL × 1 L / 1000 mL

50 mL = 0.05 L

Finally, we shall determine the molarity of the KOH solution. This can be obtained as follow:

Mole of KOH = 0.125 mole

Volume = 0.05 L

Molarity of KOH =?

Molarity = mole / Volume

Molarity of KOH = 0.125 / 0.05

Molarity of KOH = 2.5 mol/L

Thus, the molarity of the KOH solution is 2.5 mol/L

The compound is going to have the molecular formula; [tex]C_{4} H_{8}O_{2}[/tex]

We know that the molecular formula is the formula of the compound that shows the number of the atoms of each of the elements that we can be able to find in the compound.

Now for the compound that we have, we divide through by the relative atomic mass of each;

C - 54.53/12    H -  9.15/1   O - 36.32/16

C - 4.5        H - 9.15    O - 2.27

Dividing through by the lowest ratio;

C - 4.5/2.27   H - 9.15/2.27     O - 2.27/2.27

C - 2   H - 4    O -1

The empirical formula is [tex]C_{2} H_{4} O[/tex]

We now have;

[2(12) + 4(1) + 16] n= 88.1

n = 88.1/44

n = 2

The molecular formula is;

[tex]C_{4} H_{8}O_{2}[/tex]

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Answer:

the missing levels are "population, community"

To solve this we must be knowing each and every concept related to tautomerization. Therefore, out of keto and enol form, keto form is mot stable.

Tautomers are two structural isomers that are readily inconvertible and vary in the relative locations of their atoms while being in dynamic equilibrium. Tautomers essentially function as structural isomers.

Tautomerization is the term used to describe the tautomerization phenomena. Tautomerization includes the exchange of protons and electrons between molecules. Out of keto and enol form, keto form is mot stable.

Therefore, out of keto and enol form, keto form is mot stable.

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Answer:

D  The dinosaur could have died due to an meteor crash.

Explanation:

Answer:

D

Explanation:

The dinosaurs fossils were found ten miles away from the meteor crash site. Correct me if I'm wrong

Answer:

B.

Converted to renewable ones

exhausted or depleted

The answer of the following question of concentration are:

c) The law expression for this reaction is k[A].

d) The value of k including its units is  on the specific reaction.

e) The half-life of the reaction is T1/2 = 0.693/k.

What is concentration?
Concentration in chemistry is a measure of the amount of a substance that is present in a given volume. It is usually expressed in terms of mass, moles, or volume.

c) The law expression for this reaction is rate = k[A], where k is the rate constant. This is because in a first-order reaction, the rate of reaction is proportional to the concentration of the reactant.

d) The value of k depends on the specific reaction, and can be determined by measuring the reaction rate at different concentrations of A and plotting a graph of rate versus concentration of A.

e) The half-life of a first-order reaction is given by T1/2 = 0.693/k, where T1/2 is the half-life and k is the rate constant. The units of the half-life are seconds.

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Answer:

Ca is calcium

Cd is cadmium

Ca in Grp 2

Cd is transition metal

...

Answer:

okķkkkkkkkkkkkkkkkkkkkkk.I don't know the answer. GIVE THANKS

Answer:

all non metals

Explanation:

iodine is a non metal, and if a metal had bonded with it, it would he considered a metal and non metal. But since two iodine atoms are bonded together, they are both non metals ( I2)

Answer:

Hello your question has some missing data attached below is the missing data ( Note: the PH in the attached question is 3.2 but the PH value I used in the solution = 3.1 as requested in the initial question )

answer : 0.41 volts

Explanation:

Given data :

[ Fe²⁺ ] = 1.3 M

[ Fe³⁺ ] = 0.010 M

[ H⁺ ] = 10^3.1

O2 = 0.20 atm

E⁰cell = 0.46 volts

temperature = 25°C ( room temperature )

Calculate the voltage of this ( 3 -cell battery )

we can apply the relation below

E = E⁰cell - ( 0.0591 / n )*Log Q

  = 0.46 - ( 0.0591 / 4 )*Log [ (0.01)^4 / (1.3)^4 * (10^3.1)^4 * 0.2 ]

  = 0.4120 Volts

Note : Q is determined from the equation attached to the question

According to the question the new pressure of the gas is: 6.5512 kPa

What is pressure?

Pressure is the force applied to a surface divided by the area of the surface on which the force is applied. It is measured in units of force per unit area, such as pounds per square inch (psi) or pascals (Pa). Pressure can be caused by a variety of factors, such as the weight of air, the weight of a liquid, or the force of a gas. Pressure is an important concept in many fields, including physics, engineering, and chemistry.

The ideal gas law can be used to determine the gas's new pressure:

PV = nRT

where R is the universal gas constant, n is the number of moles, P is the pressure, V is the volume, and T is the temperature.

We know that V = 10.0L, n = 1.00 mole, R = 8.314 J/molK, and T = 800K.

As a result, the gas's new pressure is:

P = (1.00 mol * 8.314 J/molK * 800K) / 10.0L = 6.5512 kPa

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Answer:

how tall each sibling is

Explanation:

bc it says height

Answer:

Its false Because it does'snt only show directions and changes there are others too.

Explanation:

hope it helps!!

Answer:

false

Explanation:

it's false because it's in motion