What Is the rate of diffusion? Select the correct answer below; a. the process of molecules dispersing in space in response dilferences concentration b. the escape gas molecules through a tiny hole into vacuum c. the amount Of gas passing through some area per unit of tire d. none of the above

The list contains several belongings of ethylene( a growing agent for bananas). The properties shown by the given substance is :

Physical property is a kind of property that's measureable. It explains the state of the given substance or patches. Generally shows odor, color, texture, viscosity etc.

1. Tintless

2. Odorless

3. Gas at room temperature

4. Mixes with acetone

5. 1 L has a mass of1.260 under standard conditions

Hence the physical properties are tintless , odorless, gas at room temperature, one liter has a mass of1.260 under standard conditions, mixes with acetone.

Chemical property : A chemical property is defines as the material's belongings that is seen or observed in between the chemical reactions.

1. ignitable

2. polymerizes to form polyethylene

The given question is incomplete the complete question would be :

The ensuing list contains several belongings of ethylene (a growing agent for bananas). which are physical belongings and which are chemical properties?

Tintless

Odorless

Ignitible

Gas at room temperature

1 l has a mass of 1.260 under standard conditions

Mixes with acetone

Polymerizes to form polythene

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Answer:66.3L= 66300.00cm³

Explanation:The cubic centimeters equal to the Liters multiplied by 1,000.

Answer:

66,300 cubic centimeters

Explanation:

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The molarity of the resulting solution is 0.069 M. This means that there are 0.069 moles of magnesium sulfate per liter of solution.

To calculate the molarity of the resulting solution, we need to first determine the number of moles of magnesium sulfate present in the solution.
The molar mass of magnesium sulfate is 120.37 g/mol (24.31 g/mol for magnesium + 32.06 g/mol for sulfur + 4 x 16.00 g/mol for oxygen). Therefore, 1134 g of epsom salt contains:
1134 g / 120.37 g/mol = 9.42 mol MgSO4
Next, we need to determine the volume of the solution. A 30-gallon bathtub filled with water will have a volume of approximately 136 L (assuming the density of water is 1 g/mL). Therefore, the final volume of the solution will also be 136 L.
Now, we can use the formula for molarity, which is:
Molarity = moles of solute / volume of solution in liters
Plugging in our values, we get:
Molarity = 9.42 mol / 136 L = 0.069 M

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The best explanation for why metals are malleable is that (C) the sea of valence electrons can act as a glue, holding metal atoms together even as they move relative to one another.

In metallic bonding, the valence electrons are delocalized and can move freely throughout the metal lattice. When an external force is applied, the metal atoms can slide past each other while the electrons hold the lattice together.

The sea of electrons also enables metals to conduct electricity and heat well, as the electrons can move throughout the metal lattice to carry charge and energy. This unique bonding property arises from the low electronegativity and high number of valence electrons in metal atoms.

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Answer:

A thermodynamic quantity equivalent to the capacity of a system to do work.

Explanation:

Answer: If one mole of carbon monoxide has a mass of 28.01 g and one mole of carbon dioxide has a mass of 44.01 g , it follows that the reaction produces 44.01 g of carbon dioxide for every 28.01 g of carbon monoxide.

Explanation: (May Be Unrelated?)

Answer:

I'd say about 8?

Explanation:

if you wanna make them huge make about 6

Answer:

Magnetic Domains

Explanation:

Each atom has its own magnetic field and if a group of atoms can align their magnetic fields this group is called a Magnetic Domain

In this case, a water sample has been diluted to 10^-3, which means it has been diluted by a factor of 1,000 times. So, the correct answer is:

The answer is option b. 300.

When a solution is diluted, it means that more solvent (usually water) has been added to decrease the concentration of the solute. The dilution factor is the ratio of the final volume of the solution to the initial volume of the solution.

In this case, the water sample has been diluted to 10-3, which means that the concentration of the original solution has been reduced by a factor of 10-3.

To calculate the dilution factor, we need to take the reciprocal of the concentration reduction factor:

Dilution factor = 1/10-3 = 1,000

So the water sample has been diluted by a factor of 1,000 times.

Therefore, the correct answer is option b. 300 is not the dilution factor, but rather the concentration reduction factor (1/300), which is the reciprocal of the dilution factor.

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Answer: The volume \((V_{1})\) of 1.00 mol of helium at 273 K is 22.4 L and the final volume \((V_{2})\) is 44.8 L.

Explanation:

Given: \(T_{1}\) = 273 K,   \(n_{1}\) = 1.00 mol

\(T_{2}\) = 273 K,         \(n_{2}\) = 2.00 mol

At the standard pressure, 1 atm the value of \(V_{1}\) and \(V_{2}\) is calculated as follows.

\(V_{1} = \frac{n_{1}RT_{1}}{P}\\= \frac{1.00 mol \times 0.0821 Latm/mol K \times 273 K}{1 atm}\\= 22.4 L\)

Similarly,

\(V_{1} = \frac{n_{2}RT_{2}}{P}\\= \frac{2.00 mol \times 0.0821 Latm/mol K \times 273 K}{1 atm}\\= 44.8 L\)

Thus, we can conclude that the volume \((V_{1})\) of 1.00 mol of helium at 273 K is 22.4 L and the final volume \((V_{2})\) is 44.8 L.

The buffer combination of bicarbonate ion and carbonic acid in the blood is essential in maintaining the pH levels within a narrow range, as changes in pH levels can cause metabolic disorders. In summary, blood is an important component of the human body, and its pH is maintained by the bicarbonate buffer system made up of bicarbonate ions and carbonic acid.

Blood is an important component of the human body. It is made up of various components such as red blood cells, white blood cells, platelets, and plasma. Blood has a pH of 7.42, and one of its essential components is the buffer combination of bicarbonate ion and carbonic acid. The bicarbonate buffer system regulates the pH of the blood by either absorbing or releasing hydrogen ions, thus maintaining a constant pH of the blood.

The bicarbonate buffer system is significant because the pH of the blood must be maintained within a narrow range for optimal metabolic activity. Carbonic acid is formed when carbon dioxide dissolves in water, and it acts as a weak acid. Bicarbonate ions are also present in the blood, and they act as a weak base. The reaction between carbonic acid and bicarbonate ions serves as a buffer system that helps to prevent changes in pH levels.

Bicarbonate is responsible for transporting carbon dioxide from the peripheral tissues to the lungs, where it is removed from the body. The buffer combination of bicarbonate ion and carbonic acid in the blood is essential in maintaining the pH levels within a narrow range, as changes in pH levels can cause metabolic disorders. In summary, blood is an important component of the human body, and its pH is maintained by the bicarbonate buffer system made up of bicarbonate ions and carbonic acid.

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Answer: 1 x 10-3 mol/L

Explanation:

Question

What concentration of H+ ions does a substance with a pH of 3 have​

the pH is the negative log of the H ion concentration in moles/liter

so pH3 has a hydrogen ion concentration of 1 x 10-3 mol/L

Answer:

na:2

h:2

c:2

0:6

coefficient and structure of atom helps to identity it.

Answer: A The Triangle Fire was a tragedy that could have been prevented.

Explanation:

The Triangle Fire was a tragedy that happened in the factory of Shirtwaist Company in New York City where there was.a.fore outbreak and about 145 employees of the company were killed.

The deaths could have been prevented because the company neglected safety measures such as having a good and reliable pump system, having readily available fire extinguishers. Also, what resulted in the lethal nature of the incident was because the doors within the building of the factory were locked.

The tragedy generated lots of attention and series of laws were been out in place in order to ensure that workers are safe at their workplace.

There are different sources of fibres which can be genetically engineered for living organisms like the spider.

The fibre silk gotten from spiders are known to be the strongest, toughest materials on the Earth. But recently, engineers has designed amyloid silk hybrid proteins and produced them in engineered bacteria.

Even though these synthetically produced fibres are stronger than Kevlar, they prefer to use Kevlar because a much larger amount of silk might be needed to produce the same effect.

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Answer:

1.Arrangement of atoms in molecules

2.The cost might be higher for producing spiderweb silk

3.Different silk strands have different combinations of amino acids

4.Major ampullate

5.Goat milk

answer:

a^2+b^2= (a+b)² -2ab

Answer:

A option

Explanation:

water gets split in photosynthesis

Answer:0

Explanation: zero because it is the most stable form of oxygen in its standard state

We first verify that the equation is balanced. We have 5 carbons (C), 2 sulfurs (S), and 4 oxygens (O) on each side of the reaction. So the reaction is balanced.

a) Now if we look at the reaction we can see that when 2 moles of SO2 react, 1 mole of CS2 is produced. That is, the ratio is 2 to 1. For each mole of SO2 half as many moles of CS2 will be produced.

So if we have 9.5 moles of SO2 we will have 9.5/2 moles, that is 4.75 moles of CS2.

Answer a) By reacting 9.50 moles of SO2 with an excess of it would be produced 4.75 moles of CS2.

Now, for the following parts of the question, we can apply the ideal gas law. This is because the reaction is in the gas phase and the law applies only to gases.

Where,

P= Pressure at STP = 1 atm

T= Temperature at STP = 273.15K

R= Ideal law constant = 0.08206 (atm L)/(mol K)

V= Volume of the gas

n= Numer of moles

b)We clear n and we replace the known values of SO2 to find the number of moles of SO2 that react.

Now, for each mole of SO2 that reacts we need 5/2 moles of C, that is 0.24x5/2=0.61 moles of C.

We use mass molar of C to calculate the grams.

Mass molar of C=12.01g/mol

Mass of C= Moles of C x Mass Molar

Mass of C= 0.61 mol x 12.01 g/mol = 7.37 g

So, To fully react 5.5 L of SO2 at STP we will need 7.37 g of C.

c)We apply the gas law again but this time we clear the volume.

We also take into account that for each mole of C, 4 moles of CO are produced, so if we have 20 moles of C we will produce 20x4=80 moles of CO.

So, from 20.0 moles of C at STP can be produced 1793.18 liters of CO

If an unshielded sample of radioactive material emits alpha particles, the effect it has on a person sitting in the next room would depend on various factors, including the distance between the person and the radioactive material, the type and quantity of the radioactive material, and the duration of exposure. However, it's important to note that alpha particles have a limited range and are not very penetrating.

Alpha particles consist of two protons and two neutrons and have a positive charge. They can travel only a short distance through air and can be stopped by a sheet of paper or a few centimeters of air. Therefore, if the person is in a separate room and there are walls and doors between them and the radioactive material, the alpha particles would not likely reach them directly.

However, if the radioactive material is in the same room or there are openings through which the alpha particles can pass, there may be a potential for exposure. In such cases, the person may be at risk of internal exposure if they inhale or ingest radioactive particles or if the particles come into contact with open wounds or mucous membranes.

The health effects of exposure to alpha particles depend on various factors, including the type of radioactive material and the dose received. Alpha particles can cause damage to living tissues, and if a person is exposed to a significant amount, it can increase the risk of developing cancer or other health issues.

To assess the potential risks and ensure safety, it's important to consult with radiation safety experts and follow appropriate safety protocols. Radiation shielding materials such as lead or concrete can be used to minimize the potential exposure to alpha particles and other forms of ionizing radiation.

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Answer:

There is only one sub level in the first principal energy level, and it is 1s

Explanation:

trust

Answer:

Explanation:

6 electrons

carbon dioxide, C has atomic number 6 so it has 6 electrons and oxygen has atomic no 8, i.e 16 electrons.

If the starting materials were added in a 2:1 ratio instead of a 1:1 ratio, it would result in an increased ratio of the two reactants in the reaction, which would affect the proton NMR in a number of ways.

For example, the increased ratio of reactants would lead to an increased amount of product formed and this could lead to an overall shift in the peak area of the proton NMR. Additionally, if the reactants are different, the peak shape and the relative area of each proton NMR peak may change due to the different reactants present.

Finally, the amount of time required for the reaction to take place may be increased due to the increased amount of reactants present.

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There are 210 kilocalories in a portion of food that contains 8 g protein, 10 g fat, and 22 g carbohydrate. The amount of vitamin C and water in the food does not contribute to the number of kilocalories, as they are not sources of energy.

Proteins are large, complex molecules that are made up of long chains of amino acids. They are essential for the growth, repair, and maintenance of tissues in the body, and are involved in a wide range of biological processes.

To calculate the number of kilocalories in a portion of food, we need to use the following formula:

Calories = (grams of protein x 4) + (grams of fat x 9) + (grams of carbohydrate x 4)

Using this formula, we can calculate the number of calories in the given portion of food:

Calories = (8 g protein x 4) + (10 g fat x 9) + (22 g carbohydrate x 4)

Calories = 32 + 90 + 88

Calories = 210 kcal

Therefore, in a portion of food that contains 8 g protein, 10 g fat, and 22 g carbohydrate there are 210 kilocalories.

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Answer:

The volume of stock solution needed to make the solution is 1875 ml

Explanation:

The parameters given are;

The volume of 75 M solution of H₂SO₄ = 400 ml

The concentration of stock solution = 16.0 M

Number moles per liter of stock solution = 16 moles

Number of moles in required 400 ml solution = 0.4×75 = 30 M

Volume of stock solution that contains 30 M = 30/16×1 = 1.875 l

The volume of stock solution that is required = 1875 ml

Due to increased nuclear attraction, the periodic trend is that electron affinity rises from left to right over time.

Typically, electron affinities rise (become more negative) from top to bottom down a group and fall (become less negative) from left to right across a period.

Electronegativity, ionisation energy, electron affinity, atomic radius, melting temperature, and metallic nature are important periodic trends. Chemists can forecast an element's properties with great speed thanks to periodic trends, which are created by the periodic table's organisation.

Fluorine has the highest electronegativity, whereas Chlorine has the highest electron affinity due to the tremendous repulsion in Fluorine's closely packed 2p subshell (whereas chlorine is an atom with a larger atomic size).

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The amount of zinc metal in grams consumed in the given reaction is 20.27g.

The mass of a substance in a stoichiometric calculation can be proceeded as follows;

According to this question, a sample of zinc metal reacts completely with an excess of hydrochloric acid. The number of moles of the hydrogen gas produced can be calculated thus;

PV = nRT

0.980 × 7.8 = n × 0.0821 × 298

7.644 = 24.47n

n = 0.31 moles.

In the reaction, 1 mole of zinc metal produces 1 mole of hydrogen gas. Hence, 0.31 moles of zinc metal will be required to produce 0.31 moles of hydrogen gas.

mass of Zn = 0.31 mol × 65.38g/mol = 20.27g

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S - Sun: The center of our solar system, around which all the planets, including Earth, orbit.

O - Orbit: A planet's path around the Sun or any celestial object's path around another object due to gravitational attraction.

L - Light: A major ingredient in the process of photosynthesis, which is the process by which plants convert sunlight into chemical energy.

A - Astronomer: A scientist who studies heavenly bodies such as stars, planets, galaxies, and other celestial objects.

R - Red: A color in the spectrum. Light from the Sun or any other light source can be separated into different colors, and red is one of those colors.

E - Earth: Our planet, also known as the third planet from the Sun. It is the only known planet to support life.

N - Nicolaus Copernicus: Polish astronomer who stated the Sun is the center of the universe, challenging the geocentric model that placed Earth at the center.

E - Elements: Iron and calcium, for example, are elements. Elements are substances made up of atoms with the same number of protons.

R - ROYGBIV: A helpful light acronym that stands for the colors of the visible spectrum: Red, Orange, Yellow, Green, Blue, Indigo, and Violet.

G - Galaxy: The Milky Way is one of these. A galaxy is a vast system of stars, gas, dust, and other celestial objects bound together by gravity.

Y - Yellow: A color in the spectrum, located between green and orange. It is one of the colors that make up the visible spectrum of light.

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Answer:

A2+

..........

Explanation:

they lose 2 electrons to form an ion