Aluminum reacts with chlorine gas to form aluminum chloride via the following reaction:

2Al(s)+3Cl2(g)→2AlCl3(s)

You are given 12.0g of aluminum and 17.0g of chlorine gas. If you had excess chlorine, how many moles of of aluminum chloride could be produced from 12.0g of aluminum?

Answer:

Molar mass of bromine is equal to \(80.9119\)

Explanation:

The molar mass of HBr is equal to the sum of atomic weight of  Bromine.

Atomic Weight of hydrogen is equal to \(1.00794\)

Atomic Weight  of Bromine is equal to \(79.904\)

Molar mass of Bromine

= Atomic Weight of hydrogen + Atomic Weight  of Bromine

Molar mass of Bromine  \(= 79.904 + 1.00794 = 80.9119\)

The number of atoms of gold in the 2.96 mL of the seawater is 4.73×10¹⁰ atoms

1 mole of Gold = 6.02×10²³ atoms

With the above information, we can determine the number of atoms in the seawater. Details below

1 mole of Gold = 6.02×10²³ atoms

Therefore,

7.86×10⁻¹⁴ mole of gold = (7.86×10⁻¹⁴ mole × 6.02×10²³ atoms) / 1 mole

7.86×10⁻¹⁴ mole of gold = 4.73×10¹⁰ atoms

Thus, 4.73×10¹⁰ atoms of gold are present in the seawater

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Quick boiling of water can be related to the hot weather because in high temperature water changes from liquid state to gaseous state.

Water boils quickly when the weather is hot and warm because hot weather has high temperature which leads to the quick evaporation of the water. In hot weather, the liquid water changes into vapor state very quickly as compared to cold temperature.

So we can conclude that Quick boiling of water can be related to the hot weather because in high temperature water changes from liquid state to gaseous state.

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Answer:

lungs

Explanation:

Answer:

Hi. I'll explain

Explanation:

\(11.2mol \times \frac{22.4liter}{1mol} = 250.88 \)

If you round it it will be 251

D is the answer (251)

The amount of lithium nitrate needed to make 230 grams of lithium sulfate depends on the amount of lead (IV) sulfate provided and is equal to half of the moles of lithium sulfate produced, which is 2.091/2 = 1.046 mol. The mass of lithium nitrate required can be calculated using its molar mass.

To calculate the amount of lithium nitrate required to make 230 grams of lithium sulfate, we can use the following steps:

Calculate the molar mass of lithium sulfate:

Li2SO4: 2(6.94 g/mol) + 1(32.06 g/mol) + 4(16.00 g/mol) = 109.94 g/mol

Determine the number of moles of lithium sulfate:

n = m/M = 230 g / 109.94 g/mol = 2.091 mol

Since 2 moles of lithium sulfate are produced for every 1 mole of lead (IV) sulfate, we need 2.091/2 = 1.046 mol of lead (IV) sulfate to react with the lithium sulfate.

Calculate the mass of lead (IV) sulfate required:

m = nM = 1.046 mol x Pb(SO4)2 molar mass (assuming it's provided)

From the balanced equation, we know that for every 2 moles of lithium sulfate, we need 1 mole of lithium nitrate.

The amount of lithium nitrate needed to make 230 grams of lithium sulfate depends on the amount of lead (IV) sulfate provided and is equal to half of the moles of lithium sulfate produced, which is 2.091/2 = 1.046 mol. The mass of lithium nitrate required can be calculated using its molar mass.

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The amount of heat absorbed by 400 grams of water from 20°C to 99°C is 132,214.4 J.

The amount of heat absorbed or released by a substance can be calculated using the following equation;

Q = mc∆T

Where;

According to this question, 400.0 grams of water is heated in a pot on the stove from 20ºC to 99°C. The amount of heat absorbed can be calculated as follows:

Q = 400 × 4.184 × {99 - 20}

Q = 132,214.4 J

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Answer:

The surface area of a shot piece of zinc would be 4.01 cm2, while the surface area of a zinc granule would be 0.30 cm2. To calculate the surface area of a cylinder, you would use the formula 2(pi)r2 + 2(pi)rh, where r is the radius of the cylinder and h is its height. For a shot piece of zinc, with a diameter of 7.5 mm and a height of 2.0 mm, the radius is 3.75 mm and the surface area is 4.01 cm2. For a zinc granule, with a diameter of .84 mm, the radius is .42 mm and the surface area is 0.30 cm2.

Answer:

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Explanation:

uere hi'dh uoi

Answer:

Density

Explanation:

The density of an irregularly shaped object can be obtained by weighing it and then drooped int a graduated cylinder; observing the change in volume.

The density is the calculated as;

Density = Mass / Change in volume

where;

Change in volume = Final Volume - Initial Volume

Answer:

a because hot moves to cold

Explanation:

To determine the pH of a solution based on the hydronium ion concentration, you can use the equation:

pH = -log[H₃O⁺]

where [H₃O⁺] is the concentration of hydronium ions.

In this case, the hydronium ion concentration is 6.5x10^-4 M.

Calculating the pH:

pH = -log(6.5x10^-4)

= -log(6.5) - log(10^-4)

= -log(6.5) + 4

Using a calculator or logarithmic tables, you can find that the logarithm of 6.5 is approximately 0.81.

pH ≈ 0.81 + 4

pH ≈ 4.81

Rounding to the nearest whole number, the pH of the solution is approximately 5.

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Approximately 766.08 grams of oxygen are required to completely react with 240g of C₂H₆.

To determine the amount of oxygen required to completely react with 240g of C₂H₆ (ethane), we need to set up a balanced chemical equation for the combustion of ethane.

The balanced equation for the combustion of ethane is as follows:

C₂H₆ + O₂ → CO₂ + H₂O

From the balanced equation, we can see that the stoichiometric ratio between C₂H₆ and O₂ is 1:3. This means that for every one mole of C₂H₆, three moles of O₂ are required for complete combustion.

To calculate the amount of oxygen required, we need to convert the given mass of C₂H₆ to moles using its molar mass, and then use the stoichiometric ratio to determine the moles of O₂ required. Finally, we can convert the moles of O₂ back to grams using the molar mass of oxygen.

The molar mass of C₂H₆ is calculated as follows:

(2 x atomic mass of carbon) + (6 x atomic mass of hydrogen)

(2 x 12.01 g/mol) + (6 x 1.01 g/mol) = 30.07 g/mol

Now, we can proceed with the calculation:

Calculate the moles of C₂H₆:

moles of C₂H₆ = mass of C₂H₆ / molar mass of C₂H₆

moles of C₂H₆ = 240 g / 30.07 g/mol ≈ 7.98 mol

Determine the moles of O₂ using the stoichiometric ratio:

moles of O₂ = moles of C₂H₆ x (3 moles of O₂ / 1 mole of C₂H₆)

moles of O₂ = 7.98 mol x 3 ≈ 23.94 mol

Convert moles of O₂ to grams:

mass of O₂ = moles of O₂ x molar mass of O₂

mass of O₂ = 23.94 mol x 32.00 g/mol = 766.08 g

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The waves that  has the greatest wavelength is Wavelength shown with 1 wavelength stretched over a long distance.

A wave could be a disturbance or variety that voyages through a medium or space, carrying vitality without transporting matter. Waves can take different shapes and happen totally different sorts of waves, counting mechanical waves and electromagnetic waves.

Mechanical waves require a medium to propagate, meaning they require a substance like water, discuss, or a strong fabric to transmit the wave. Illustrations of mechanical waves incorporate water waves, sound waves, and seismic waves. In these waves, particles of the medium sway or vibrate in a design, exchanging energy from one molecule to another.

Electromagnetic waves, on the other hand, don't require a medium and can travel through vacuum, such as in space. Electromagnetic waves comprise of electric and attractive areas swaying opposite to each other and to the heading of wave engendering. Illustrations of electromagnetic waves incorporate obvious light, radio waves, microwaves, infrared waves, bright waves, X-rays, and gamma beams.

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Answer

The pressure inside the cylinder will change to 14.686 atm

Explanation

Given:

Volume, V = 0.500 L

Moles of O2 = 0.150 mol

Temperature, T = 25 °C = (25 + 273.15 K) = 298.15 K

Step-by-step solution:

The first step is to calculate the pressure exerted by O2 using ideal gas equation:

Plugging the values of the parameters into the formula:

The pressure exerted by O2 = 7.343 atm

If 0.150 mol of sulfur dioxide, SO2 was added to the oxygen gas already in the cylinder, then the pressure inside the cylinder will change by a factor of 2. That is:

Total pressure will be = 2 x 7.343 atm = 14.686 atm

Or the total pressure can be calculated using the ideal equation above, and putting n = 0.150 mol + 0.150 mol = 0.3 mol

Answer:

approximately 313 grams

Explanation:

After 1 half-life (14 days), the amount of substance remaining is half of the original amount:

10,000 grams / 2 = 5,000 grams

After 2 half-lives (28 days), the amount remaining is half of the amount remaining after 1 half-life:

5,000 grams / 2 = 2,500 grams

After 3 half-lives (42 days), the amount remaining is half of the amount remaining after 2 half-lives:

2,500 grams / 2 = 1,250 grams

After 4 half-lives (56 days), the amount remaining is half of the amount remaining after 3 half-lives:

1,250 grams / 2 = 625 grams

After 5 half-lives (70 days), the amount remaining is half of the amount remaining after 4 half-lives:

625 grams / 2 = 312.5 grams

Rounding to the nearest whole number, you would have approximately 313 grams remaining after 70 days.

Answer:

Graham's law states that the rate of diffusion or of effusion of a gas is inversely proportional to the square root of its molecular weight

Explanation:

During a chemical reaction: bonds in the reactants are broken new bonds are made in the products Energy is absorbed to break bonds. Bond-breaking is an endothermic process. Energy is released when new bonds form. Bond-making is an exothermic process.

Energy is absorbed when bonds are broken, and it is evolved when bonds are established.

Chemical bonds is defined as the creation of a chemical compound through the creation of a chemical link between two or more atoms, molecules, or ions. To form bonds, atoms exchange or swap their valence electrons. To reach a complete outer energy level, which is the most stable configuration of electrons, atoms must form chemical bonds.

Because more energy is required to break bonds than is produced when new bonds are formed, energy is absorbed in some reactions. As a result, during a reaction, many kinds of bonds may form. Energy is released as a result of the creation of bonds. Energy is absorbed when bonds are broken.

Thus, when bonds are broken, energy is absorbed, and when bonds are formed, energy is evolved.

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Answer:

Cell division.

Explanation:

Explanation:

gravity

kinetic energy

less than

friction resists the ball's movement

2.0 m/s

change its direction

speed

newton's first law

dump truck

position

Answer:

Q1 - Gravity

Q2 - Kinetic Energy

Q3 - Less than

Q4 - Friction resists the ball's forward motion

Q5 - 2 m/a

Q6 - Change its speed

Q7 - Speed

Q8 - Second law

Q9 - a dump truck

Q10 - motion

I am not sure about some answers but I answered all questions.

The reaction order and specific reaction rate constant can be determined by performing the kinetics experiment on irreversible polymerization A. Kinetic experiments can be used to investigate the rate and mechanism of chemical reactions. Chemical kinetics is the study of chemical reactions' speed and pathway.

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Answer:

63.6%

Explanation:

To calculate the percent yield of CH3OH, we need to compare the actual yield to the theoretical yield, which is the maximum amount of CH3OH that can be produced based on the amount of CO and H2 that was used in the reaction.

The theoretical yield can be calculated using the balanced chemical equation for the reaction:

CO(g) + 2H2(g) -> CH3OH(l)

Since 1 mole of CO reacts with 2 moles of H2 to produce 1 mole of CH3OH, the moles of CH3OH produced can be calculated by dividing the mass of CO by its molar mass and then multiplying by the ratio of CH3OH to CO in the balanced equation (1 mole of CH3OH per 1 mole of CO).

Let's assume the moles of CO used in the reaction is n. Then,

n = 85 g CO / 28.01 g/mol = 3.03 moles

And the theoretical yield of CH3OH would be:

3.03 moles CO * (1 mole CH3OH/1 mole CO) = 3.03 moles CH3OH

The moles of CH3OH can then be converted to grams:

3.03 moles CH3OH * 32.04 g/mol = 97.36 g CH3OH

Finally, the percent yield can be calculated by dividing the actual yield of CH3OH (61.8 g) by the theoretical yield (97.36 g) and multiplying by 100%.

Percent yield = (Actual yield / Theoretical yield) * 100%

= (61.8 g CH3OH / 97.36 g CH3OH) * 100%

= 63.6%

So the percent yield of CH3OH is 63.6%.

tell me if you confus

ALLEN

Answer:

D

Explanation:

The vibration of molecules is studied using infrared spectroscopy. Infrared spectroscopy is used to study the various modes of vibration of a molecule.

Infrared spectroscopy is used to is used to identify various functional groups by observing their stretching frequencies.

For a molecule to be infrared active, the molecule must give rise to a change in the molecular electric dipole moment.

Answer:

iv. N³⁻, O²⁻, F⁻, Na⁺, Mg²⁺

Explanation:

Isoelectronic elements are those that have the same number of electrons. So, if at least 2 elements differ in their number of electrons, the series is not of isoelectronic elements.

To know the number of electrons we will consider the atomic number and add electrons if it is an anion and subtract electrons it is a cation.

Identify the isoelectronic elements.

The learning activities titled "Hypothesis," "Variables and Hypothesis," and "Constructing a Hypothesis" all share certain similarities and differences. A question that arises in response to an observation is similar to a scientific research question in that both require some level of investigation to achieve an answer. However, scientific research questions are typically more specific and refined, with a defined methodology for obtaining data and verifying results.

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If two solutions are separated by a semipermeable membrane with one side 1.5 M NaCl solution and other side 0.5 M KBr solution. Here water will flow from the KBr solution to the NaCl solution because of the water concentration difference.

When two solutions are separated with a semipermeable membrane, the water will flow from lower solute concentrated side to higher solute concentrated side.

Lower solute concentration means the water content will be high and that states higher water concentration.

Higher solute concentration means the water content will be low and that states low water concentration.

The water will flow from higher concentration to lower till the equilibrium where both sides the water and solute concentration is same.

In this case, the lower solute concentration is the 0.5 M KBr solution and the higher solute concentration is the 1.5 M NaCl solution.

Therefore, water will tend to flow from the KBr solution to the NaCl solution.

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