Calculate the mass of SO2, needed to produce 530 g of SO3.

There are 8.73 × 10²⁴ formula units in 14.5 moles of sulfuric acid.

Formula units is an empirical formula of an ionic compound (that does not possess individual molecules) for use in stoichiometric calculations.

The formula unit can be calculated by multiplying the number of moles in a substance by Avogadro's number (6.02 × 10²³).

According to this question, there are 14.5 moles in sulfuric acid. The formula unit can be calculated as follows:

Formula units of sulfuric acid = 14.5 × 6.02 × 10²³

Formula units = 8.73 × 10²⁴ formula units

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Answer:

Br-CH2-CH(CH3)2-C(Cl)H-CH(CH3)2-CHO

Explanation:

The molecule has a total of 14 carbon atoms, 13 hydrogen atoms, and 1 bromine atom. The carbon atoms are arranged in a chain with a methyl group attached to the second carbon atom, a chlorine atom attached to the third carbon atom, and two methyl groups attached to the fourth carbon atom. The fifth carbon atom has a carbonyl group attached to it.

The molecule is an aldehyde, which means that it has a carbonyl group (C=O) at the end of the chain. The carbonyl group is polar, and the oxygen atom has a partial negative charge. The hydrogen atom has a partial positive charge. This polarity makes the aldehyde group susceptible to nucleophilic attack.

The bromine and chlorine atoms are both electrophilic, which means that they have a partial positive charge. This makes them susceptible to nucleophilic attack.

The methyl groups are non-polar and do not have any significant reactivity.

The molecule is a chiral molecule, which means that it has a mirror image that is not superimposable on itself. This is because the carbon atom with the carbonyl group is attached to four different groups.

The molecule is a liquid at room temperature and has a strong odor. It is used in a variety of products, including perfumes, flavorings, and plastics.

The mass of the two objects and the separation between them both affect the gravitational pull that exists between them. Option C is the right response, so.

The force of attraction between two objects is directly proportional to the product of their masses and inversely proportional to the square of the distance between them, according to Newton's law of gravity.

This indicates that the gravitational pull between two items will be stronger the closer they are and the heavier they are.

The gravitational force between two objects is independent of their relative motion.

Nonetheless, as stated by Newton's laws of motion, it may have an impact on their motion or trajectory.

In conclusion, Newton's law of gravitation states that the force of gravity between two objects depends on their respective masses and their distance from one another.

The force of gravity between the moving objects is unaffected by their speed, although Newton's equations of motion can be affected by that motion.

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The amount, in kJ, of heat needed to completely vaporize 50.0g of water at 100°C is 118.8 kJ.

The heat needed to completely vaporize 50.0g of water at 100°C can be calculated using the following formula:

q = m x Hv

where:

First, we need to convert 50.0g to moles by dividing by the molar mass of water which is approximately 18.015 g/mol3:

moles of water = 50.0 g / 18.015 g/mol moles of water = 2.776 mol

Thus:

q = (2.776 mol) x (40.65 kJ/mol) q = 112.8 kJ

In other words, 112.8 kJ of heat is needed to completely vaporize 50.0g of water at 100°C.

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Answer:

1896 mmHg

Explanation:

P1/T1 = P2/T2

P1 = 2065 mmHg

T1 = 416 K

P2 = ?

T2 = 382 K

Solve for P2 --> P2 = P1T2/T1

P2 = (2065 mmHg)(382 K) / (416 K) = 1896 mmHg

The gradient of a graph shows the slope or rate of change. The graph here shows the relationship between the volume (V) and the absolute temperature (T) of a gas when the gas is kept at a constant pressure.

PV = nRT,

where

P is the pressure,

V is the volume,

n is the number of moles of the gas,

R is the ideal gas constant, and

T is the absolute temperature, the formula for the ideal gas law.

The ideal gas law can be rewritten as V = (nR/P)*T if pressure (P) is constant, volume (V) is plotted on the y-axis, and absolute temperature (T) is is plotted on the x-axis. Axis.

We can see that the gradient (m) of the graph in this equation represents (nr/p) by comparing it to the equation for a straight line, y = mx + c, where y is the dependent variable (V), x is the independent variable. variable (T), m is the gradient, and c is the y-intercept.

So, the correct option is B.

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The one that does not demonstrates the law of conservation of matter would be the third option: \(2NO_2 + H_2O -- > HNO_3 + HNO_2\)

It is a law that explains that matters are conserved during the course of chemical reactions. They can neither be destroyed nor created.

Thus, the number of moles of the species in a reaction remains the same before and after the reaction.

Thus, an equation that demonstrates the law of conservation of matter will be balanced in terms of the number of moles of species.

The only equation, in this case, is \(2NO_2 + H_2O -- > HNO_3 + HNO_2\)

There are 3 oxygen species on the reactant while 5 are present on the product side.

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The number of mole of O₂ produced from the decomposition of H₂O₂ is 0.0033 mole

We'll begin by obtaining the mole of H₂O₂ that decomposed. This is obatined as follow:

PV = nRT

Divide both sides by RT

n = PV / RT

n = (0.978 × 0.082) / (0.0821 × 300)

n = 0.0033 mole

Finally, we shall determine the number of mole of O₂ produced. This is illustrated below

H₂O₂ -> H₂ + O₂

From the balanced equation above,

1 mole of H₂O₂ decomposed to produce 1 moles of O₂

Therefore,

0.0033 mole of H₂O₂ will also decompose to produce = 0.0033 mole of O₂

Thus, number of mole of O₂ produced from the reaction is 0.0033 mole

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Answer:

PbS shows a very low solubility in water, and it is insoluble in organic solvents. Any "dissolution" process in acids (hydrochloric acid, nitric acid, aqua regia) is accompanied with a chemical reaction whereby H2S is liberated and the corresponding soluble Pb2+ salts are formed. hope that helps

Answer:

The heat value can be calculated using the equation q = m * c * delta T, where q is the heat value, m is the mass of the iron sample, c is the specific heat of iron, and delta T is the change in temperature. In this case, q = 9.0 g * 0.44 J/g * (60-30) = 804 J.

The sign of q indicates whether heat is being absorbed or lost by the iron sample. In this case, since the temperature of the iron sample decreases from 60°C to 30°C, the sample loses heat and q is negative. Therefore, the heat value of the iron sample in this case is -804 J.

A 9.0 g sample of iron (specific heat= 0.44 J/g °C) heated to 60°C eventually cools to 30°C. 804 J  is the heat value. The sign of heat is negative which indicate energy is released.

Heat is the energy that moves through one thing to another if the temperatures are different. Heat passes from the hotter to the colder body when two bodies with differing temperatures are brought together. Typically, but not always, this energy transfer results in a rise inside the temperature of a colder body and a fall inside the temperature of a hotter body.

By transitioning through one physical state (and phase) to the other, such as melting from such a solid to a liquid, sublimation from either a solid to a vapour, boiling from such a liquid to a vapour, or shifting through one stable state to another, a substance can absorb heat without increasing in temperature.

q = m × c × ΔT

q = heat

m = mass of the iron sample

c =specific heat of iron

Δ T= change in temperature

q = 9.0 g×0.44 J/g × (60-30) = 804 J

heat = -804 J.

Therefore, a 9.0 g sample of iron (specific heat= 0.44 J/g °C) heated to 60°C eventually cools to 30°C. 804 J  is the heat value. The sign of heat is negative which indicate energy is released.

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The new  concentration = 2 M

Dilution is a process of decreasing the concentration of a solution by adding a number of solvents

Can be formulated

M₁V₁=M₂V₂

M₁ = Initial Molarity

V₁ = Initial volume

M₂ = Final Molarity (after dilution)

V₂ = Final volume (after dilution)

V₁=5 L

V₂=10 L

M₁=4 M

The new  concentration(M₂) :

\(\tt M_2=\dfrac{V_1.M_1}{V_2}\\\\M_2=\dfrac{5\times 4}{10}\\\\M_2=2~M\)

The balanced equation for the reaction between solid calcium cyanide and liquid water to generate calcium hydroxide and hydrogen cyanide would be \(Ca(CN)_2 (s) + 2H_2O(l)-- > Ca(OH)_2 (aq) + 2HCN (aq)\)

The reaction between solid calcium cyanide and liquid water to generate calcium hydroxide and hydrogen cyanide would be written as follows:

The chemical formula of solid calcium cyanide = \(Ca (CN)_2 (s)\)

The chemical formula of liquid water = \(H_2O (l)\)

The chemical formula of calcium hydroxide in solution = \(Ca(OH)_2 (aq)\)

The chemical formula of hydrogen cyanide in solution = \(HCN (aq)\)

Bringing all the species together, the equation for the reaction would be:

But the above equation is not balanced. The number of hydrogen and cyanide atoms is not balanced. Balanced chemical equations always have an equal number of every atom in the reactants and in the products.

Thus, the balanced equation of the reaction would be;

\(Ca(CN)_2 (s) + 2H_2O(l)-- > Ca(OH)_2 (aq) + 2HCN (aq)\)

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Answer:

B

Explanation:

B is the only answer choice that provides a rate

(like 3ºC/ hr meaning 3ºC per hour)

all the other answer choices don't have a /hr

so best answer choice is B

The correct answer is c. 0.378 g of Ca3N2

The balanced chemical equation for the reaction is:

3Ca + N2 → Ca3N2

We can see that for every 3 moles of calcium, 1 mole of nitrogen is used. Using the molar mass of calcium (40.08 g/mol) and nitrogen (28.02 g/mol) we can calculate how many moles of each reactant we have.

4.00 g of nitrogen is equal to 4.00 g / 28.02 g/mol = 0.1428 mol of nitrogen

We know that we have an excess of calcium, so we only need to consider the amount of nitrogen present.

We can use the stoichiometry of the reaction to calculate how many grams of Ca3N2 are produced.

1 mole of nitrogen reacts with 3 moles of calcium to produce 1 mole of Ca3N2

0.1428 mol N2 x (1 mole Ca3N2 / 3 mole N2) = 0.04760 mole of Ca3N2

We can convert this number of moles to grams using the molar mass of Ca3N2 (128.09 g/mol)

0.04760 mole of Ca3N2 x 128.09 g/mol = 0.378 g of Ca3N2

Answer:

I'd say 624.2^3 inches.

Explanation:

Answer:

What process formed this delta?

A.) erosion and deposition

Explanation:

You're welcome.

Answer:

Erosion and deposition

Explanation:

Erosion happens as a result of the washing away of the top soil and this usually goes along with the deposition of some particles; loose or fine, mainly sand. So yes, the answer is option a.

Answer:

cannot be measure

Hope this helps :) !!!

Answer:

mixture

Explanation:

Physical separation techniques, such as filtration, can be used to separate mixtures into their component parts. As a result, mixture separation is less difficult than chemical compound separation. Therefore, option B is correct.

A substance made up of two or more separate chemical compounds that are not chemically linked is referred to as a mixture. A mixture is the actual coming together of two or more substances while maintaining their individual identities.

Because they are not chemically linked to one another, the components of a mixture are extremely simple to separate. We'll examine five various techniques for separating mixtures: Filtration. Crystallization.

A mixture's constituent parts are distinguished from one another by differences in their physical characteristics, such as particle size. The separation of the compounds is made easier by how varied their properties are. Tea leaves can be filtered using a strainer because they do not dissolve in water.

Thus, option B is correct.

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Answer:

The magnification of the microscope is equal to the magnification of the ocular lens times the magnification of the objective lens. Since the objective lens has 10x printed on them at "low power". The total magnification would be 10 times 10.

Explanation:

i hope this helps C:

Answer:

A. filtration

Hope it helps

we can do soo by noticing any colour change, or by the formation of an insoluble precipitate or by the evolution of a gas.

Answer:

is this for science or another class?

Answer:

Water is peace. They include sedimentation, pollution, climate change, deforestation, landscape changes, and urban growth. ... Each type of change to a landscape will have its own specific impact, usually directly on natural ecosystems and directly or indirectly on water resources.

Explanation:

When we handle chemical substances we must be very careful because they can put our:

A chemical substance is a chemical compound resulting from the union of two or more chemical elements. Compounds have different uses depending on their properties. However, some can be harmful and life-threatening to humans.

The potential acute effects of some compounds may be related to skin contact causing:

On the other hand, the chronic effects of chemical compounds can be:

There are a large number of chemical substances and each one has different properties. Therefore, it is very difficult to generalize about a treatment in case of ingestion. What must be done is to know the level of risk of the substance that is being handled and avoid ingesting it at all costs. However, if it is ingested, go to the emergency room.

Not all chemical compounds have the same flammable response to fire. Due to the above, it is necessary to identify if the substance that we are handling is highly or slightly flammable, for this we can consult the manual of the substance or the label of its packaging.

According to some studies and the hydrochloric acid safety data sheet, it can have dangerous reactions with:

When we handle chemical substances we are facing a potential risk. Due to the above, protocols have been developed for its handling, which include the use of protection elements such as:

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A globally harmonized system (GHS) of classification and labeling of chemicals has aim of improving workers' safety and health.

The GHS is an internationally-agreed system that supplies nations with the regulatory building blocks to establish or modify existing national programs. It establishes criteria for the variety of chemical hazards and offers protective measures through safety data sheets and labels.

The aim of the GHS is to improve employees' safety and health by supplying them with easy-to-understand chemical hazard and precaution information Safety Data Sheets, on labels, and during safety training.

"

Complete question

globally harmonized system of classification and labelling of chemicals aims at _______________________.

"

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The temperature of the mixture will be approximately 32°C.

To determine the final temperature of the mixture, we can use the principle of conservation of energy. The energy gained or lost by a substance can be calculated using the equation:

Q = m * c * ΔT

where:
Q = heat energy gained or lost
m = mass of the substance
c = specific heat capacity of the substance
ΔT = change in temperature

Let's calculate the heat energy gained or lost by each component separately and then equate them to find the final temperature.

For ice:
m_ice = 40 g
c_ice = 2.09 J/g°C (specific heat capacity of ice)
ΔT_ice = final temperature - 0°C (change in temperature)

Q_ice = m_ice * c_ice * ΔT_ice

For water:
m_water = 80 g
c_water = 4.18 J/g°C (specific heat capacity of water)
ΔT_water = final temperature - 40°C (change in temperature)

Q_water = m_water * c_water * ΔT_water

According to the principle of conservation of energy, the heat lost by the water will be equal to the heat gained by the ice:

Q_water = -Q_ice

Now let's substitute the respective values and solve for the final temperature:

m_water * c_water * ΔT_water = -m_ice * c_ice * ΔT_ice

80 g * 4.18 J/g°C * (final temperature - 40°C) = -40 g * 2.09 J/g°C * (final temperature - 0°C)

Simplifying the equation:

334.4 * (final temperature - 40) = -83.6 * final temperature

334.4 * final temperature - 13376 = -83.6 * final temperature

334.4 * final temperature + 83.6 * final temperature = 13376

418 * final temperature = 13376

final temperature = 13376 / 418

final temperature ≈ 32°C

Therefore, the temperature of the mixture will be approximately 32°C.

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Answer:

Explanation:

A molecule is a basic unit of a chemical substance made up of two or more atoms that are bonded together. A compound, on the other hand, is a substance made up of two or more different elements that are chemically bonded together.

Every compound is a molecule because it is made up of at least two chemically bonded atoms, but not every molecule is a compound because a molecule can be made up of the same type of atoms and not be a compound.

For example, molecular oxygen (O2) is made up of two oxygen atoms, but it is not a compound because both atoms are the same element. On the other hand, water (H2O) is a compound made up of hydrogen and oxygen atoms.

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The following balanced chemical equation may be used to describe the interaction between aluminum (Al) and calcium nitrate (Ca(NO₃)₂):

2 Al + 3 Ca(NO₃)₂ → 2 Al(NO₃)3 + 3 Ca

Reactants are the chemicals that begin a chemical reaction, while products are the compounds that are created as a result of the reaction.

The substances that initiate a chemical reaction. Products are the substances that are created during the reaction. Compounds or elements can act as reactants and products.

Aluminium and calcium nitrate interact in this reaction to form aluminium nitrate (Al(NO₃)₃) and calcium (Ca), which are the end products.

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When hydrogen bromide is added to 2-methylbut-2-ene, two products are expected to be produced: 2-bromo-2-methylbutane (major product) and 3-bromo-2-methylbutane (minor product).

The addition of HBr to 2-methylbut-2-ene follows the Markovnikov addition rule. This means that the hydrogen atom and the bromine atom will add to the carbon atoms in the double bond, such that the hydrogen atom adds to the carbon with the greater number of hydrogen atoms, and the bromine atom adds to the carbon with the lesser number of hydrogen atoms.

In this case, the hydrogen atom will attach to the second carbon atom, which has three hydrogen atoms, while the bromine atom will attach to the third carbon atom, which has only one hydrogen atom. This produces the major product, 2-bromo-2-methylbutane.

The formation of the minor product, 3-bromo-2-methylbutane, occurs due to the rearrangement of the carbocation intermediate formed during the addition reaction. The carbocation can rearrange either by shifting a methyl group from the second to the third carbon, or by shifting a hydrogen atom from the third to the second carbon. This rearrangement produces the minor product, 3-bromo-2-methylbutane.

In conclusion, the addition of HBr to 2-methylbut-2-ene produces two products: 2-bromo-2-methylbutane (major product) and 3-bromo-2-methylbutane (minor product). The major product forms due to Markovnikov addition rule, while the minor product forms due to carbocation rearrangement.

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By using filtration, the sand and fine salt can be effectively separated based on their difference in particle size, providing a clean separation of the two components.

Filtration is a separation technique that takes advantage of the difference in particle size between sand and salt. It involves passing the mixture through a porous material, such as filter paper or a filter funnel, which allows the liquid (saltwater) and small salt particles to pass through while retaining the larger sand particles.

Here's how the filtration process can be carried out:

1. Set up a filter apparatus with a funnel and filter paper or a filter flask.

2. Place the mixture of sand and salt in a beaker or a flask.

3. Slowly pour the mixture into the filter paper or funnel, allowing the liquid (saltwater) to pass through while retaining the sand on the filter paper.

4. Once the liquid has passed through completely, the sand will be left behind on the filter paper or in the filter flask.

5. Carefully remove the sand from the filter paper or filter flask, and the saltwater solution can be collected separately.

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