Bases react with carbon dioxide and from............. and water​

Answer:

The Sun's temperature, which reaches around 15 million degrees Celsius in its core, steadily decreases with distance from the core, falling to 6000°C at its 'surface'. ... Instead, it rises to about 10,000°C in the chromosphere, and exceeds a million degrees Celsius in the corona.

Explanation:

Answer:

it's d (gas)

Explanation:

right on edge

When the substance is transferred from Container 1 to Container 2, its volume increases from 5 cubic meters to 10 cubic meters. This means that the substance expands to fill the entire volume of the container, indicating that it is in the gas phase. Hence the correct option is d.

A gas phase is a state of matter in which a substance exists as a gas. In this phase, the substance has a high kinetic energy, and its particles are free to move randomly and rapidly in all directions.

The particles in a gas phase are far apart from each other and have very weak attractive forces, allowing them to fill up the entire volume of the container they are in.

The properties of a gas phase can be explained by the kinetic molecular theory, which states that gases are composed of small particles (atoms or molecules) that are in constant random motion.

The theory explains that the temperature of a gas is related to the kinetic energy of the particles, and that the pressure of a gas is related to the force of the particles colliding with the walls of the container.

Therefore option d gas is correct.

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Answer:

1.KCl is answer

Explanation:

when potassium chloride KCl is dissolved in water,it will dissociate to form k+ and cl- .thus,the solute must be k+Cl- .

I hope it's helpful!

The substance dissolved in a solvent or water is called a solute it makes up the homogenous mixture called solution by getting dissolved in it.

The \(\rm KCl\) is the solute in the aqueous solution of \(\rm KCl\).

Therefore, option A, \(\rm KCl\) is the solute.

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Answer: The initial temperature was 588 Kelvin

Explanation:

The combined gas equation is,

\(\frac{P_1V_1}{T_1}=\frac{P_2V_2}{T_2}\)

where,

\(P_1\) = initial pressure of gas = 1.49 atm

\(P_2\) = final pressure of gas = 657 torr = 0.864 atm   (760 torr = 1atm)

\(V_1\) = initial volume of gas = 6400 ml

\(V_2\) = final volume of gas = 9660 ml

\(T_1\) = initial temperature of gas = ?

\(T_2\) = final temperature of gas = \(245^0C=(245+273)K=515K\)

Now put all the given values in the above equation, we get:

\(\frac{1.49\times 6400}{T_1}=\frac{0.864\times 9660}{515}\)

\(T_1=588K\)

The initial temperature was 588 Kelvin

Explanation: The concentration of a solution helps us to determine the collision speed between particles in a molecule or compound. Knowing the concentrations of components in solutions can help determine the health of the world.

Answer:

. Density is an intensive property, meaning that it does not depend on the amount of material present in the sample

Explanation:

In chemistry there are two kind of property that exist are Intensive property and extensive property. Density is an intensive property as it is independent of amount of matter.

Intensive property is a property that tells about the dependence of a property on Quantity of a matter over which study has been done.

Mass and volume are extensive property, these depend on the quantity of substances. Whenever two extensive property are divided then the final answer is always intensive So, density is division of mass of volume. Hence Density is an intensive property.

Example of Intensive property are specific gravity, heat capacity, melting point and boiling point . Examples of extensive property are weight and internal energy.

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The number of theoretical plates is 7,512, option (a) is the correct answer.

The formula for the number of theoretical plates (N) in a chromatography column is given as N = 16 (tR / w)².

Where: tR is the retention time is the base width of the solute. The formula indicates that the number of theoretical plates is directly proportional to the square of the retention time and inversely proportional to the square of the base width of the solute. The length of the column is not included in the formula. Using the values given in the question: N = 16 (325 / 15)² = 7,512.

Therefore, the number of theoretical plates is 7,512, option (a).

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Answer:

1-Temporarily store food.

2-Contract and relax to mix and break down food.

3-Produce enzymes and other specialized cells to digest food

Answer:

Explanation:

Mnemonic Device: Kings Hate Dragons Because Dragons Can't Make Money. Explanation: to remember the Metric prefixes, or the decimal ladder, and base unit (Kilo, Hecto, Deca, Base, Deci, Centi, Milli, Micro).

Answer:

the answer is 250kg but i am not sure

Explanation:

give me brainlest

Answer:

7.5 seconds

Explanation:

We can use the second equation of accelerated motion

vf = vi + a Δt

We know that the intial velocity (vi) is 30m/s, and the final velocity is 0 since it comes to a stop. We also know that the acceleration is -4m/s.

We can rearrange the equation for Δt (time)

vf = vi + a Δt

vf - vi = a Δt

(vf - vi)/a = Δt

and we can substitute the values into the equation for Δt now

Δt = (vf - vi)/a

Δt = (0 - 30)/-4

Δt = -30/-4

Δt = 7.5

Answer:

As a result, Sofa's acceleration was 2 m/s² according to Newton's Second Law of motion.

Explanation:

Newton's Second Law, also called the Fundamental Law of Dynamics, indicates that: "The change in motion is directly proportional to the printed motive force and occurs according to a straight line along which that force is printed." This means that the acceleration of a moving object depends on the amount of force applied to it at a given moment, in order to modify its trajectory or speed.

So, Newton's second law states that a body accelerates if a force is applied to it. The acceleration of an object is directly proportional to the sum of all the forces acting on it and inversely proportional to the mass of the object:

F = m * a

where "m" is the mass of the object, "a" is the acceleration and "F" is the net force, that is, the vector sum of all the forces acting  on the object.

In this case:

Replacing:

300 N = 150 kg*a

Solving;

300 N÷ 150 kg=a

2 m/s²=a

As a result, Sofa's acceleration was 2 m/s² according to Newton's Second Law of motion.

when ca2+ concentration in the blood becomes lower than normal,parathyroid hormone is released.

This drug is a synthetic version of the hormone parathyroid, which is naturally produced by your body's parathyroid glands. Your body's calcium and phosphorus levels are regulated and kept in balance by the parathyroid hormone. In order to address low blood calcium caused by insufficient parathyroid hormone, this drug is combined with calcium and vitamin D.More than 7,000 times less calcium ions are present in the intracellular fluid of cells than in the blood plasma.Serious negative effects from parathyroid hormone are possible. If you have any of the following symptoms due to elevated calcium levels: nausea, vomiting, constipation, excessive thirst or urination, muscular weakness, bone pain, disorientation, loss of energy, or fatigue, call your doctor right once. You could experience low calcium levels if you stop taking parathyroid hormone.

complete question:When Ca2+ concentration in the blood becomes lower than normal, __________.

parathyroid hormone is released

growth hormone is released

calcium salts deposit in the blood vessels

testosterone is released

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The molar mass of a 0.314-gram sample of gas having a volume of 1.6L at 287K and 0.92 atm is 0.503g/mol.

The temperature and pressure of a gas that behaves like an ideal gas is directly proportional to one another.

First, calculating molar mass :

The molar mass of a substance can be calculated by dividing the mass of the substance by its number of moles.

However, the number of moles can be calculated using the formula:

PV = nRT

From where;

P = pressure

V = volume

R = gas law constant

T = temperature

n = number of moles

0.92 × 1.6 = n × 0.0821 × 287

1.47 = 23.56n

n = 1.47/23.56

n = 0.624 moles

Molar mass = 0.314 g ÷ 0.624 mol

Molar mass = 0.503 g/mol

Therefore, the molar mass of a 0.314-gram sample of gas having a volume of 1.6L at 287K and 0.92 atm is 0.503g/mol.

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The true statements regarding depth and rate of breathing are: Increased carbon dioxide levels cause an increase in pH, and brain stem respiratory centers control respiratory muscles.

The factors that can influence ventilation rate are: Higher brain centers (emotions/voluntary control), peripheral chemoreceptors (aortic arch and carotid arteries), and body temperature.

For the reabsorption of bicarbonate ions, the true statements are: Carbon dioxide combines with water in tubule cells, directly forming bicarbonate and hydrogen ions, and carbonic acid formed in filtrate dissociates to release bicarbonate and hydrogen ions.

The decrease of hydrogen ions in the body fluids can have disastrous results because decreased hydrogen ions can disrupt tissue functions and change the shape of large complex molecules, rendering them nonfunctional.

For the depth and rate of breathing, increased carbon dioxide levels cause a decrease in pH, not an increase. This statement is incorrect. The brain stem respiratory centers do control respiratory muscles, so this statement is true.

Factors that can influence ventilation rate include higher brain centers (emotions/voluntary control), peripheral chemoreceptors (aortic arch and carotid arteries), and body temperature. These statements are true.

In the reabsorption of bicarbonate ions, carbon dioxide combines with water in tubule cells, forming bicarbonate and hydrogen ions. This statement is true.

The decrease of hydrogen ions in the body fluids can have disastrous results because decreased hydrogen ions can disrupt tissue functions and change the shape of large complex molecules, rendering them nonfunctional.

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The atomic number of hydrogen is 1.

Key points:

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The amount of energy absorbed by 2.00 L of gasoline as it is converted to the vapor phase at its boiling point is 22606 J.

We know that;

1 mole of gasoline occupies 22.4 L

x moles of gasoline occupies 2 L

x = 0.089 moles

Then we have that the mass of the gasoline = 0.089 moles * 100 g/mol

= 8.9 g

Then;

H = mL

L = 2540 J/g for gasoline

Thus the energy that is absorbed  is;

H =  8.9 g * 2540 J/g

H = 22606 J

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Carbon is a non metal and also has four valence electrons.

The right response is b) APF is higher for a box filled with bronze balls.

The atomic packing factor (APF) is a measure of the amount of space that is occupied by atoms in a crystal structure. It is calculated by dividing the total volume of atoms in a unit cell by the volume of the unit cell. The higher the APF, the more closely packed the atoms are in the crystal structure.

In this case, since the boxes have the same dimensions, the unit cell for both boxes will be the same. However, the size and weight of the balls differ. The wooden balls are more massive than the hollow bronze balls, but they are smaller in size. This means that the wooden balls will have a higher density and will occupy less space than the hollow bronze balls.

Since the APF is calculated based on the volume of atoms in the unit cell divided by the volume of the unit cell, the size and density of the balls will affect the APF. In this case, the hollow bronze balls will occupy more space in the unit cell compared to the wooden balls, as they have a larger radius and lower density. Therefore, the box filled with hollow bronze balls will have a higher APF compared to the box filled with wooden balls.

Therefore, the correct answer is b) Box filled with bronze balls has higher APF.

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Therefore, the pH of the buffer is approximately 3.823.

To calculate the pH of a buffer, we can use the Henderson-Hasselbalch equation:

pH = pKa + log([A-]/[HA])

where pKa is the dissociation constant of the weak acid, [A-] is the concentration of the conjugate base, and [HA] is the concentration of the weak acid.

In this case, lactic acid (CH3CH(OH)COOH) is the weak acid and sodium lactate (CH3CH(OH)COO-Na+) is its conjugate base. The pKa of lactic acid is 3.86.

Plugging in the values given in the problem, we get:

pH = 3.86 + log([0.11]/[0.12])

pH = 3.86 + log(0.917)

pH = 3.86 - 0.037

pH = 3.823

Therefore, the pH of the buffer is approximately 3.823.

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Answer:

here is my answerrrrrrr

When 10.0 g of H₂ reacts with 10.0 g of O₂, the limiting reactant is O₂, and 8.75 grams of excess H₂ are remaining after the reaction is complete.

In chemical reactions, reactants combine to form products. However, sometimes there may be an excess of one reactant, which means that it is present in greater quantity than required for a complete reaction with the other reactant.

In such cases, the excess reactant is not completely consumed and remains unused after the reaction reaches completion.

The balanced chemical equation given for the reaction is:

2H₂ + O₂ → 2H₂O

From the equation, we can see that 2 moles of hydrogen gas react with 1 mole of oxygen gas to produce 2 moles of water.

To find the number of moles of each reactant, we need to convert the given masses to moles using the molar mass of each substance. The molar mass of hydrogen gas (H₂) is 2 g/mol, and the molar mass of oxygen gas (O₂) is 32 g/mol.

For hydrogen gas (H₂):

Number of moles = Mass / Molar mass

Number of moles = 10.0 g / 2 g/mol

Number of moles = 5.0 mol

For oxygen gas (O₂):

Number of moles = Mass / Molar mass

Number of moles = 10.0 g / 32 g/mol

Number of moles = 0.3125 mol

From the balanced chemical equation, we can see that the ratio of hydrogen gas to oxygen gas is 2:1. Therefore, for a complete reaction, 2 moles of hydrogen gas react with 1 mole of oxygen gas.

Since the mole ratio is 2:1, we can conclude that oxygen gas is the limiting reactant because we have 0.3125 mol of oxygen gas, which is less than 5.0 mol of hydrogen gas.

Since 1 mole of oxygen reacts with 2 moles of hydrogen, we can determine the amount of hydrogen gas required by multiplying the number of moles of oxygen gas by 2:

Amount of hydrogen gas required = 2 * 0.3125 mol

Amount of hydrogen gas required = 0.625 mol

Since we have an excess of hydrogen gas (5.0 mol), we can subtract the amount of hydrogen gas required (0.625 mol) from the total amount of hydrogen gas (5.0 mol) to find the remaining excess:

Excess reactant remaining = Total amount of reactant - Amount of reactant required

Excess reactant remaining = 5.0 mol - 0.625 mol

Excess reactant remaining = 4.375 mol

To convert the remaining moles of hydrogen gas to grams, we can use the molar mass of hydrogen gas:

Mass of excess reactant remaining = Moles * Molar mass

Mass of excess reactant remaining = 4.375 mol * 2 g/mol

Mass of excess reactant remaining = 8.75 g

Therefore, after the reaction goes to completion, there will be approximately 8.75 grams of excess hydrogen gas remaining.

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When an electrolyte dissolves in water, the resulting solution conducts an electric current.

Answer:

Valence electrons are the electrons orbiting the nucleus in the outermost atomic shell of an atom. Electrons that are closer to the nucleus are in filled orbitals and are called core electrons

Explanation:

yup

Irony: a situation in which there is a contrast between expectation and reality.Irony can take many different forms.

The verbal irony, dramatic irony, and situational irony are the three types .Irony occurs in literature AND in life whenever a person says something or does something that departs from what they (or we) expect them to say or do.

Irony in the story 'Dusk':

Ironically, the main character, who thinks he is a good character judge, is duped by the young man who sat next to him on the park seat.

According to Gortsby, darkness is a time when dejected and shady people emerge.

The term irony has its roots in the Greek comic character Eiron, a clever underdog who by his wit repeatedly triumphs over the boastful character Alazon. The Socratic irony of the Platonic dialogues derives from this comic origin.

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Answer: I'm pretty sure it's D

Explanation :I hope