Determine the volume (in liters) of a 87.8-9 sample of OF2 gas at 307 torr and 264°C.

if 13.0 g of nitrogen and 2.00 g of hydrogen are reacted, and all the hydrogen is consumed, 3.73 grams of nitrogen would remain.

Nitrogen is a chemical element with the symbol N and atomic number 7. It is a colorless, odorless, tasteless, and mostly inert diatomic gas at standard temperature and pressure. Nitrogen is the most abundant gas in Earth's atmosphere, making up about 78% of the air we breathe.

Nitrogen is an essential element for life as it is a major component of proteins and nucleic acids (DNA and RNA). It is also a component of many important compounds such as ammonia, nitric acid, and nitrogen oxide. Nitrogen is obtained from the air by a process called fractional distillation or by reacting ammonia with water.

In industry, nitrogen is used in the production of fertilizers, food packaging, and electronics. It is also used to create a controlled atmosphere for welding and in the manufacture of semiconductors.

Although nitrogen is not toxic, it can be dangerous if it displaces oxygen in confined spaces, leading to asphyxiation. Nitrogen gas can also react explosively with other chemicals under certain conditions.

Overall, nitrogen is a crucial element for life and industry with many useful applications, but it must be handled with care and caution to prevent accidents.

The balanced chemical equation for the reaction between nitrogen gas (N2) and hydrogen gas (H2) to form ammonia gas (NH3) is:

N2(g) + 3H2(g) → 2NH3(g)

This equation shows that 1 mole of N2 reacts with 3 moles of H2 to produce 2 moles of NH3.

To determine the mass of nitrogen that would remain if all the hydrogen were consumed, we need to calculate which reactant is limiting, i.e. which reactant would be completely consumed in the reaction.

First, we calculate the number of moles of nitrogen and hydrogen:

Number of moles of N2 = mass of N2 / molar mass of N2

= 13.0 g / 28.02 g/mol

= 0.464 mol

Number of moles of H2 = mass of H2 / molar mass of H2

= 2.00 g / 2.02 g/mol

= 0.992 mol

According to the balanced equation, the stoichiometric ratio of N2 to H2 is 1:3. Therefore, 0.464 mol of N2 requires 1.392 mol of H2 to react completely. Since we only have 0.992 mol of H2, this is the limiting reactant.

Using the stoichiometric ratio, we can calculate the amount of N2 that would react with 0.992 mol of H2:

Number of moles of N2 consumed = 0.992 mol H2 x (1 mol N2 / 3 mol H2)

= 0.331 mol N2

The amount of N2 remaining after the reaction is the initial amount minus the amount consumed:

Number of moles of N2 remaining = 0.464 mol - 0.331 mol

= 0.133 mol

Finally, we can calculate the mass of N2 remaining:

Mass of N2 remaining = number of moles of N2 remaining x molar mass of N2

= 0.133 mol x 28.02 g/mol

= 3.73 g

Therefore, if 13.0 g of nitrogen and 2.00 g of hydrogen are reacted, and all the hydrogen is consumed, 3.73 grams of nitrogen would remain.

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The structure of fatty acids involves long carbon-based chains with a carboxyl group (―COOH) located in the end, triglycerides phospholipids contain a phosphate group and glycerol, while steroids are cyclic and they contain C atoms linked via 4 fused rings.

Lipids are a broad category of biomolecules that include fatty acids, triglycerides phospholipids, and steroids. For example, fatty acids are long carbonated chains that contain exactly identical CH2 groups in the interior of the molecule and a carboxyl group (―COOH) located at one extreme side.

Triglycerides phospholipids are composed of three fatty acids chains linked to a glycerol backbone and also a phosphate group that may confer polar properties to the molecule.

Finally, steroids are another important class of lipids composed of several carbon-based fused rings.

Therefore, we can conclude that fatty acids, triglycerides phospholipids, and steroids are structurally different lipids that are mainly composed of carbon-based structures.

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Answer:

E. More people from African American ethnic group is affected by AIDS than other groups.

Explanation:

because it is supported by the data provided in the circle graph. The graph shows that 48% of new AIDS cases in 2000 were in the African American population, while only 31% were in the white population and 20% were in the Hispanic population. This indicates that a disproportionate number of African Americans were affected by the AIDS epidemic in 2000. While option D "Many people are still misinformed about the severity of AIDS" is a possible conclusion, but it is not directly stated or implied by the data provided in the graph.

Answer: It is indeed A.Standard Solution.

Hope this helps you!

Answer:

Explanation:

Here, we want to get the equation of the reaction between Hydrochloric acid and Zinc metal

Zinc metal displaces the hydrogen from hydrochloric acid to form zinc chloride

We have the equation of reaction as:

Acidic solutions include those with HBr, H3PO4, and CH3CH2COOH.Any liquid that has more hydrogen ions per volume than water is considered acidic.

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Answer: 78.59 lb/ft

Explanation:

use stoichiometry to solve

1.26g/cm x ( 1pound/ 454 grams) X (28317 Cm/1 ft) =  78.59 pounds/ft

If the pressure on a gas increased then its a volume will decrease because gas molecules will pushed closer together, the data support the hypothesis.

If the volume of the gas decreases, the molecules strike the walls more frequently, raising the pressure; conversely, if the volume grows, the distance the molecules must travel to strike the walls increases, and they strike the walls less frequently, lowering the pressure.

Gases have the ability to expand to fill almost any volume and can be compressed to minuscule fractions of their original capacity. When gas molecules are forced together to the point where they meet, the material becomes liquid. Cooling a gas and compressing it are two methods for turning it into a liquid.

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The complete question is as follows:

If the pressure on a gas is increased, then its volume will decrease because the gas molecules will be pushed closer together. Did the data support the hypothesis (above)? Justify your answer. Sample Justification: As weight was added to the top of a syringe, the volume of the air trapped in the syringe decreased. The weight and the surface area of the plunger were used to calculate pressure. As more weight was added, the pressure increased. The volume decreased in response. Did you mention that adding weight increased the pressure? Did you mention that volume decreased as the pressure increased?

To prepare  1.000 / of pH 9.20 buffer made from NH3 and NH4Cl we need add 1.990 L of 3.00 M NH3 and 250 g of NH4Cl solid to water to make a final volume of 1.000 L.

To prepare a 1.000 L of pH 9.20 buffer made from NH3 and NH4Cl, we need to determine the amount of NH3 and NH4Cl required.

First, we can calculate the pKb of NH3 using the Kb value given:

Kb = [NH4+][OH-]/[NH3]

pKb = -log(Kb) = -log(1.75 x 10^-5) = 4.756

The Henderson-Hasselbalch equation for a buffer made of NH3 and NH4Cl is:

pH = pKb + log([NH4+]/[NH3])

We can rearrange this equation to solve for the ratio of [NH4+] to [NH3]:

[NH4+]/[NH3] = 10^(pH - pKb)

Substituting the given values:

[NH4+]/[NH3] = 10^(9.20 - 4.756) = 395.9

This means that the ratio of [NH4+] to [NH3] in the buffer solution should be 395.9.

Next, we can use this ratio to calculate the amounts of NH3 and NH4Cl required to make the buffer solution.

Let x be the amount of NH3 needed in moles.

Then, the amount of NH4Cl needed in moles is also x, since we need the same number of moles of NH4+ and NH3.

From the given information, we have:

2.000 L of 3.00 M NH3, which contains 6.00 moles of NH3.

250 g of NH4Cl, which is equivalent to 2.465 moles of NH4Cl (using the molar mass of NH4Cl, which is 53.49 g/mol).

Using the ratio of [NH4+] to [NH3] calculated above, we can write:

[NH4+]/[NH3] = x/(6.00 - x)

Solving for x:

x = 6.00/[1 + 1/395.9] = 5.970 moles

Therefore, we need 5.970 moles of NH3 and 5.970 moles of NH4Cl to make the buffer solution.

To calculate the volumes required, we need to convert the moles of NH3 to volume using its concentration of 3.00 M:

Volume of NH3 = moles of NH3 / concentration of NH3

= 5.970 moles / 3.00 M = 1.990 L

Since the addition of solid does not result in a volume change, we can add the 250 g of NH4Cl directly to the 1.000 L of solution.

Therefore, to prepare 1.000 L of pH 9.20 buffer made from NH3 and NH4Cl, we need to add 1.990 L of 3.00 M NH3 and 250 g of NH4Cl solid to water to make a final volume of 1.000 L.

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Answer:

Loam soil* is soil composed of equal parts sand, silt, and clay.

Explanation:

Answer:

This would be 63 gallons :)

Explanation:

The Volume of water = 2.4 × 10² L

The Volume of water in gal = ?

The solution:  We know that one gal is equal to 3.785 litter.

So in conclusion, 2.4 × 10²L × 1 gal / 3.785 L

2.4 × 10²L × 0.264 gal. L⁻¹

0.634 × 10² gal

Hopefully this helps :3

63 gal

Answer: Oxide anion. Oxide ion. Atomic oxygen(2-) Oxygen, ion(O2-)

Description: Oxide(2-) is a monoatomic oxyge...

Molecular Formula: O-2

Synonyms: oxideoxide(2-)16833-27-5Oxide a...

Molecular Weight: 15.999

Explanation: I hope this helps.

Air escape from a tire when tire valve is opened because the pressure from the weight of the car is forcing the already pressurized air out .

When air is filled in tires, it get into more compact area than the outer atmosphere, therefore particles in tire are close to each other and exert pressure continuously on tire walls to get out of it. Thus, material of the tire need to be pressure resistant as much possible.

After opening the tire valve, air starts leaving with huge sound as strain outside the tire is weaker than that inside the tire. Molecules strike with the same force on larger area and pressure starts diminishing.

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Note: The question given on the portal is incomplete. Here is the complete question.

Question: Air leaves a tire when the tire valve is opened because

A. the pressure outside the tire is lower than the pressure inside the tire.

B. the pressure outside the tire is greater than the pressure inside the tire.

C. the temperature is higher outside the tire than inside the tire.

D. there are more gas particles outside the tire than inside the tire.

To find the total amount of amoxicillin given over 11 days, we can use dimensional analysis.

   Start by identifying the known quantities: 2 tablets per day and 375 mg per tablet.

   Next, identify the unknown quantity: the total amount of amoxicillin given over 11 days (in mg).

   Write the equation using the known quantities and the unknown quantity:

   (2 tablets/day) x (375 mg/tablet) x (11 days) = unknown quantity

   Use the units to cancel out units and get the final result:

   2 x 375 x 11 = 8250 mg

So, over 11 days, the patient will receive 8250 mg of amoxicillin.

The new volume of the balloon after heating it to a temperature of 51 °C is approximately 2.39 L.

Charles's law states that "the volume occupied by a definite quantity of gas is directly proportional to its absolute temperature.

It is expressed as;

\(\frac{V_1}{T_1} =\frac{V_2}{T_2}\)

Given that:

Substituting the given values and solve for V₂:

\(V_1T_2 = V_2T_1\\\\V_2 = \frac{V_1T_2}{T_1} \\\\V_2 = \frac{2.2\ *\ 324.15}{298.15 }\\ \\V_2 = 2.39 \ L\)

Therefore, the final volume is 2.39 litres.

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Considering the ideal gas law, the volume occupied by 3.25 moles of an ideal gas at a temperature of 18.00°C is 686.71 L.

An ideal gas is the behavior of those gases whose molecules do not interact with each other and move randomly. Under normal conditions and under standard conditions, most gases exhibit ideal gas behavior.

An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T), related by a simple formula called the ideal gas law:

P×V = n×R×T

Where:

In this case, you know:

Replacing in the ideal gas law:

1.13 atm×V = 3.25 mol× 0.8205 L.atm/K.mol× 291 K

Solving:

V = (3.25 mol× 0.8205 L.atm/K.mol× 291 K)÷ 1.13 atm

V= 686.71 L

Finally, the volume is 686.71 L.

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Answer:

and now you have a nail in your wood :)

The particle decay process described as 226 88 Ra → 222 Rn + He 86 involves the emission of a helium nucleus (He), which consists of two protons and two neutrons. This type of emission is known as alpha decay. Option A.

Alpha decay occurs when a radioactive nucleus releases an alpha particle, resulting in the emission of high-energy helium nuclei. In this case, the radium-226 (Ra) nucleus decays into radon-222 (Rn) by emitting an alpha particle. The resulting helium nucleus (He) is the emitted alpha particle.

Alpha particles have a positive charge and are relatively large and heavy. They are composed of two protons and two neutrons, which gives them a helium-like structure. Due to their size and charge, alpha particles have limited penetrating power and are typically stopped by a few centimeters of air or a sheet of paper.

Therefore, the correct answer A.  alpha radiation.

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The reaction becomes spontaneous at approximately 2667 Kelvin.

To determine the temperature at which a nonspontaneous reaction becomes spontaneous, we can use the equation ΔG = ΔH - TΔS, where ΔG is the change in Gibbs free energy, ΔH is the change in enthalpy, T is the temperature in Kelvin, and ΔS is the change in entropy.

In this case, we are given ΔH = 144 kJ/mol and ΔS = 54 J/K mol. To convert ΔH to J/mol, we multiply by 1000, giving us ΔH = 144,000 J/mol.

To find the temperature at which the reaction becomes spontaneous, we set ΔG to zero, as this is the condition for equilibrium. Thus, we have 0 = ΔH - TΔS.

Rearranging the equation, we have TΔS = ΔH, and substituting the given values, we get T * 54 J/K mol = 144,000 J/mol.

Dividing both sides by 54 J/K mol, we find that T = 144,000 J/mol / 54 J/K mol = 2667 K.

Therefore, the reaction becomes spontaneous at approximately 2667 Kelvin.

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In both cases we will have non-organic molecules, so the correct option is B.

Usually, compounds of carbon are organic when we have bonds of hydrogen and carbon.

Now, what happens for pencil lead and diamonds?

Both of these are covalent structures of carbon (so these are only made of carbon) where small impurities may modify some of the covalent structures, but not enough to make them organic compounds. Basically, we could say that both diamonds and pencil lead are "a form of carbon" (which by itself is inorganic).

So the correct option is B.

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a.) Pentane

b.) 2 - Methylpropane

c.) 3- Methylpentane

d.) Pent -2- ene

e.) 2 methylbut-2-ene

f. ) 3,3 dimethylpent -1-ene

g. ) 1 Bromo - 5- methylhexane

h. ) 3-Chloropentane

i. ) 1 - Iodoethane

Answer:

Explanation:

a.) Pentane

b.) 2 - Methylpropane

c.) 3- Methylpentane

d.) Pent -2- ene

e.) 2 methylbut-2-ene

f. ) 3,3 dimethylpent -1-ene

g. ) 1 Bromo - 5- methylhexane

h. ) 3-Chloropentane

i. ) 1 - Iodoethane

We have C2H6O

First isomer: Boiling point 78.2 °C, ethanol

Second isomer: Boiling point -25°C, dimethyl ether

Here, ethanol is more soluble in water because alcohol contains hydrogen bondings. Thus, hydrogen bonding is not possible in dimethyl ether

1. The constituent gases of air are:

2. The surrounding air is not seen with the eyes because it is transparent. Air molecules are not visible to the na-ked eye, and they do not scatter or absorb visible light significantly. Therefore, air appears colorless and transparent.

3. To prove that air supports burning, you can perform an experiment with a burning candle. Place a glass jar or bell jar over a lit candle, ensuring that the jar is airtight. As the candle burns, it consumes oxygen from the air inside the jar. Eventually, the candle flame will go out due to the lack of oxygen, proving that air (specifically oxygen) is necessary for burning.

4. To show that air occupies space, you can perform a simple experiment using a plastic bottle or syringe. Fill the bottle or syringe with water, ensuring there are no air bubbles. Then, cover the opening tightly and try to compress the air inside. You will find that it is not possible to compress the air significantly, indicating that air occupies space.

5. To prove that air has weight, you can use a sensitive balance or scale. Weigh an airtight container or balloon, and then fill it with air. The weight of the container or balloon with the added air will be greater than its initial weight, demonstrating that air has weight.

6. Air is useful to us in various ways. Three points highlighting the importance of air are:

7. Three properties of air include:

Air exerts force in various ways. For example, air pressure allows objects like airplanes to fly by providing lift. Air resistance or drag opposes the motion of objects moving through the air, creating a force that can affect their speed and trajectory.

8. Four effects of air pollution include:

9. Causes of pollution:

10. Two control measures for air pollution include:

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Answer: Two substances have different properties because they are made of different types and numbers of atoms that repeat.

Explanation: According to the article “Atomic Zoom-In”, all matter is made of tiny pieces called atoms, and there are 118 different types of atoms in the universe. Every substance is made of a unique combination of atoms, which can be represented by a chemical formula. The chemical formula shows the types and numbers of atoms that repeat to make up a substance.

For example, water has a chemical formula of H2O, which means it is made of groups of 2 hydrogen atoms and 1 oxygen atom. Substances have different properties because they are made of different types and numbers of atoms that repeat.

For example, water and ethanol are both clear liquids, but they have different properties such as boiling point, density, and flammability. This is because water is made of H2O groups, while ethanol is made of C2H6O groups.

The different types and numbers of atoms affect how the molecules interact with each other and with other substances, resulting in different properties. Therefore, to explain why two substances have different properties, we need to look at their chemical formulas and see how their atoms differ.

Hope this helps, and have a great day! =)

Answer:

the stuff that comes out of your wall outlets B

To determine the tomato's velocity when it hits the ground, we need more information. Specifically, we need the height from which the tomato was dropped and the tomato mass.

Without these details, it is impossible to calculate velocity accurately. The velocity of an object when it hits the ground depends on factors such as the height of the fall, the mass of the object, and any forces acting on it during the fall (such as air resistance).

If you can provide the necessary information, I can help you calculate the velocity of the tomato when it hits the ground.