When the rate of the forward reaction equals the rate of the backward reaction, the system is said to be in (2 points)

a. reverse
b. dynamic equilibrium
c. homeostasis
d. suspended state

Answer:

There isn't anything below, but i can help if you edit the question and put it there

Explanation:

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Answer:

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An example of the biosphere is where live occurs on, above and below the surface of Earth. The zone of planet earth where life naturally occurs, extending from the deep crust to the lower atmosphere. The living organisms and their environment composing the biosphere. The living organisms of the earth.

Answer:

C meteoroid

Explanation:

Meteoroids are the only ones of the four that are under a kilometer in size.

Answer:

a. Increase

b. 539 L

Explanation:

Step 1: Given data

Step 2: Calculate the final volume of the gas

The pressure of the gas is inversely proportional to the volume. So, as the pressure decreases, the volume must increase. Assuming constant temperature and ideal behavior, we can calculate the final volume of the gas using Boyle's law.

P₁ × V₁ = P₂ × V₂

V₂ = P₁ × V₁/P₂

V₂ = 760 mmHg × 200.0 L/282 mmHg = 539 L

Answer:

2.20 x 10²⁵ atoms

Explanation:

Atoms of CO= 36.6-mol sample

From Avogadro's constant, which is

(6.022 × 10^ 23 atoms per mole)

Then

Number of atoms=[ 6.022 × 10^ 23 atoms/mole] × [36.6-mol]

= 2.20 x 10²⁵ atoms

Hence, number of atom is 2.20 x 10²⁵ atoms

Answer:

Answer is - 2. ...........

At constant temperature, if the volume of the sample of gas decreases, the pressure increases to 4.0atm.

Hence, option1)4 atm is the correct answer.

Boyle's law simply states that "the volume of any given quantity of gas is inversely proportional to its pressure as long as temperature remains constant.

Boyle's law is expressed as;

P₁V₁ = P₂V₂

Where P₁ is Initial Pressure, V₁ is Initial volume, P₂ is Final Pressure and V₂ is Final volume.

Given the data in the question question;

We substitute our given values into the expression above to determine the new pressure.

P₁V₁ = P₂V₂

P₂ = P₁V₁ / V₂

P₂ = ( 1.0atm × 0.2L ) / 0.05L

P₂ = 0.2Latm / 0.05L

P₂ = 4atm

At constant temperature, if the volume of the sample of gas decreases, the pressure increases to 4.0atm.

Hence, option1)4 atm is the correct answer.

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Answer:

I don't understand this question

Heat energy will be released by solid A which will then be absorbed by liquid B.

These little particles vibrate back and forth or run into each other constantly. All matter contains a type of energy known as heat (or thermal) energy, which is produced by the movement of particles.

Particle energy increases with temperature. It is possible for some of this energy to be transferred to cooler particles. For instance, in the gas state, when a fast-moving particle strikes a slower-moving particle, some of the energy from the collision is transferred to the slower-moving particle, increasing its speed.

A region of high energy will gradually spread throughout the material as a result of billions of moving particles colliding with one another until thermal equilibrium is established.

Therefore, heat energy will be released by solid A which will then be absorbed by liquid B.

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Answer:

See explanation and image attached.

Explanation:

Solvolysis is a reaction in which the solvent is also the nucleophile. The reaction occurs by SN1 mechanism since it yields most stable carbocation. The SN1 mechanism predominates since a weak nucleophile/base is used.

The major product as shown is the image attached to this answer. The first step is the loss of the bromide ion followed by nucleophillic attack of the solvent. Loss of H^+ completes the mechanism.

Answer:

27.43 kPa (Option A)

Explanation:

We can solve this by the use of the Ideal Gases Law.

P . V = n . R . T

As n and R are constant, we avoid them from the equation so:

P₁ . V₁ / T₁ = P₂ . V₂ / T₂

P₁ . 0776L / 298K = 32.6 kPa . 0.664L / 303K

P₁ . 0776L / 298K = 0.0714 kPa .L/K

P₁ . 0776L = 0.0714 kPa .L/K  . 298K

P₁ = 21.289 kPa.L / 0.776L

P₁ = 27.43 kPa

Answer: Air Temperature

Answer:

A rivers load is gravel and sand. It is carried by being dragged, rolled, and bounced along the bed of the river.

Explanation:

Answer:

the amount of gravel and sand at a river

the load is carried by the moving water

Answer:

: kinetic energy is the energy transformation that occurs in a hot balloon.

Explanation:

Hot air balloons use a propane burner that converts chemical energy to thermal energy. The hot air is less dense than than the colder air and it lifts the balloon

Answer:

What do you mean Every force has a what?

Answer:

The statement means that in every interaction, there is a pair of forces acting on the two interacting objects. ... The direction of the force on the first object is opposite to the direction of the force on the second object. Forces always come in pairs - equal and opposite action-reaction force pairs.

Answer:

45m

Explanation:

Answer:

C₂H₅N₂

Explanation:

In the combustion analysis, all NO comes from the nitrogen of the sample, that means:

Moles NO = Moles N in the sample

In the same way:

Moles CO2 = Moles C in the sample

Moles H2O = 1/2 moles H in the sample

To solve this problem we must convert the mass of each gas to moles in order to find the moles of each atom. The empirical formula is the simplest whole number ratio of atoms presents in the molecule:

Moles NO = N -Molar mass: 30g/mol

0.4646g * (1mol / 30g) = 0.01549 moles N

Moles CO2 = C -Molar mass: 44.01g/mol-

0.6859g * (1mol / 44.01g) = 0.01559 moles C

Moles H2O = 1/2moles H -Molar mass: 18.02g/mol-

0.6973g * (1mol / 18.02g) = 0.03870 moles H

The ratio of atoms is -Dividing in the low number of moles = moles N-:

C = 0.01559 / 0.01549 = 1

N = 0.01549 / 0.01549 = 1

H = 0.03870 / 0.01549 = 2.5

Twice this ratio of atoms -Because empirical formula must be given only with whole numbers:

C = 2

N = 2

H = 5

The empirical formula is:

Answer:

pH = 9.4

Explanation:

With the given molarity of OH⁻ species we can calculate the pOH of the solution:

pOH = -log[OH⁻]

pOH = 2.6

Now we can use the pOH to calculate the pH of the solution, with the following formula:

pH = 14 - pOH

pH = 14 - 2.6

pH = 9.4

So a solution containing a OH⁻ concentration of 0.0025 M has a pH of 9.4.

Answer: The tempearture of 11.2 L of CO is [tex]3.0^0C[/tex].

Explanation:

To calculate the final volume of the system, we use the equation given by Charles' Law. This law states that volume of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

[tex]\frac{V_1}{T_1}=\frac{V_2}{T_2}[/tex]

where,

[tex]V_1\text{ and }T_1[/tex] are the initial volume and temperature of the gas.

are the final volume and temperature of the gas.

We are given:

[tex]V_1=11.2L\\T_1=?\\V_2=13.3L\\T_2=55^0C=(55+273)K=328K[/tex]

Putting values in above equation, we get:

[tex]\frac{11.2L}{T_1}=\frac{13.3L}{328K}\\\\T_1=276K=(276-273)^0C=3.0^0C[/tex]

Thus the tempearture of 11.2 L of CO is [tex]3.0^0C[/tex], pressure remaining constant.

Answer:

Single replacement reaction

Explanation:

Let us try to write down the reaction equation for the reaction of a magnesium  ribbon with hydrochloric acid.

Mg(s) + 2HCl(aq) ------> MgCl2(aq) + H2(g)

A single replacement reaction is a type of chemical reaction in which one element is replaced by another element in a compound.

In this reaction, magnesium replaced hydrogen to form the product. Hence it is a single replacement reaction.

Answer:

mi = 31.28 g

Explanation:

According to the law of conservation of energy:

[tex]Heat\ Gain\ by\ Ice = Heat\ Lost\ by\ Water\\m_iL = m_wC\Delta T\\[/tex]

where,

mi = mass of ice = ?

L = Latent heat of fusion of ice = 334 J/g

mw =  mass of water = 50 g

C = specific heat of water = 4.18 J/g.°C

ΔT = change in temperature of water = 75°C - 25°C = 50°C

Therefore,

[tex]m_i(334\J/g) = (50\ g)(4.18\ J/g.^oC)(50^oC)[/tex]

mi = 31.28 g

Answer:

Explanation:

(The MW of CuSO4 is 250 g/mol).

Answer:

5 grams of CuSO4

Explanation:

First you make a stoichiometric relationship between the molarity and liters. So there is 2 mols per every liter. Then you put in the moleculur weight( for every mol there is 250 g). Then you have to get rid of the liters, so you times the equation by 0.01(this was found by 10ml converted into liters). After all of that you should end up with 5 grams of CuSo4

Answer: K = 8.01 ·10^-3 M

Explanation:   K = [NO2] ² / [N2O4] = (0.0141 M)² / 0.0248 M = 0.00801 M

Answer:

Limting reactant: NaOH

Excess reactant: Al₂(SO₃)₃ by 104.9 grams.

315 g of Na₂SO₃ are produced in the reaction

67.4 % is the percent yield.

Explanation:

Balaced equation is:

Al₂(SO₃)₃ + 6NaOH → 3Na₂SO₃ + 2Al(OH)₃

We convert the mass of each reactant to moles, to identify the limiting reactant:

389.4 g . 1mol/ 342.15g = 1.14 moles of sulfite

200 g . 1mol / 40g = 5 moles

1 mol of aluminum sulfite react to 6 moles of NaOH, according to stoichiometry.

If we have 1.14 moles of sulfite, we need (1.14 . 6)/1 = 6.82 moles

We only have 5 mol of NaOH, so this is the limiting reactant.

Then the aluminum sulfite is the excess.

6 moles of NaOH react to 1 mol of sulfite

Then, 5 moles of NaOH may react to (5 . 1)/6 = 0.83 moles.

1.14 mol - 0.83 mol = 0.31 moles remains after the reaction goes complete.

We convert to mass: 0.31 mol . 342.15g/mol = 104.9 g

Then, we work with the limiting reactant. Stoichiometry is 6:3 (2)

6 moles of NaOH can produce 3 moles of sodium sulfite

Then 5 moles will produce (5 . 3)/6 = 2.5 moles

We convert moles to mass: 2.5 mol . 126 g/mol = 315 g.

Percent yield = (Yield produced/Thoeretical yield) . 100

Percent yield = (212.4g /315g) . 100 = 67.4  %

Answer:

The mitochondria is the organelle found in plant and animal cells and is involved in making cellular energy from respiration.

Explanation:

Answer:

genotype are the organism's hereditary information for example DNA

phenotype are the organism's physical characteristics for example your eyes or hair

or how your nose looks

it is false it reacts with oxygen

give brainliest if right

To solve such this we must know the concept of oxidation reaction. Therefore, the given statement is incorrect. When iron rust it reacts with oxygen from the air.

Chemical reaction is a process in which two or more than two molecules collide in right orientation and energy to form a new chemical compound. The mass of the overall reaction should be conserved. There are so many types of chemical reaction reaction like combination reaction, double displacement reaction.

In oxidation reaction, one of the element of the given compound oxidises to its higher oxidation state. Rusting is an example of oxidation reaction. The balanced equation for the rusting reaction can be given as

4Fe + 3O[tex]_2[/tex] + 6H[tex]_2[/tex]O → 4Fe(OH)[tex]_3[/tex]

Therefore, the given statement is incorrect.

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Answer:yes coefficient u mean??

Explanation:

Answer:VO(ClO4)3 i'm sure this is it

Explanation: