Two bungee jumpers with the same mass stand on two buildings. One stands on a building 100ft tall and the other a building that is 200ft tall. Which has more potential energy and why?

Answer:

The s-block and p-block together are usually considered main-group elements, the d-block corresponds to the transition metals, and the f-block encompasses nearly all of the lanthanides (like lanthanum) and the actinides (like actinium).

Explanation:

Answer:

\(\frac{2}{5}\)

Explanation:

Probability refers to chances of occurrence of any event.

Value of probability is greater than or equal to 0 and less than or equal to 1.

Probability = Number of favorable outcomes ÷ Total number of outcomes

Total number of students in math group = 5

Also, 2 students are randomly picked to  be the co-captains.

Probability that students were Sammie and Victor = \(\frac{2}{5}\)

The formula unit of a salt that is not correct is \(Ca_{2} O\) in option C.

A salt is almost always made up of a metal and a nonmetal element. The salts as we know them are mostly ionic in nature and they are known to be able to dissolve in solution when they are put into solution.

We know that the salt that they meant to show in option C is calcium oxide and the foregoing can not be the correct formula since both the calcium and the oxygen ions are divalent. The correct formula of the salt would be CaO.

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Answer: The pressure of gas is inversely proportional to volume of the gas.

Explanation: A pressure-volume graph for gases demonstrates the relationship between pressure and volume. When the volume decreases, the pressure increases (inverse relationship) and vice versa. The graph visually represents the behavior of gases during compression or expansion processes. The slope of the line on the graph indicates the gas's compressibility. Analyzing the graph provides insights into gas properties and processes, such as Boyle's Law or the ideal gas law, in a concise and graphical manner.

Therefore the answer is pressure decrease as volume increase.

Capacity refers to the amount of moisture that a drying agent can absorb. Efficiency refers to how quickly and effectively a drying agent can remove moisture. Chemical inertness means that the drying agent does not react with or contaminate the substance being dried.

Defining the terms in context to drying agent :-

1. Capacity refers to the amount of water a drying agent can absorb before it becomes saturated and unable to take in more moisture.
2. Efficiency refers to the speed at which a drying agent can remove water from a substance or environment.
3. Chemical inertness refers to the stability of a drying agent, meaning it will not react with the substance it is drying or any other chemicals in the environment.

The features of a good drying agent include high capacity, high efficiency, and chemical inertness. This ensures that the drying agent can absorb large amounts of water quickly without causing any unwanted reactions.

Three common drying agents are:
1. Calcium chloride
2. Silica gel
3. Magnesium sulfate

These agents are popular choices due to their high capacity, efficiency, and chemical inertness.

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At constant temperatures, the simplest approach to reduce the volume of a gas is to raise its pressure. So, at 700 bar, or 700 times normal atmospheric pressure, hydrogen has a density of 42 kg/m3, compared to 0.090 kg/m3 at normal pressure and temperature.

Hydrogen decreases metal oxides in the reactivity series below. That is, hydrogen can only decrease the oxides of metals that are less reactive than hydrogen itself.

High-Temperature Water Splitting: Chemical processes that split water to make hydrogen are fueled by high temperatures generated by solar concentrators or nuclear reactors.

The oxidation number of hydrogen gas is 0, but the oxidation state of hydrogen atoms in water is +1. As a result, the hydrogen atom has been oxidized. It acts as a reducing agent.

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Avogadro's number (6.02*1023) of something is defined as 1 mole. So one mole of sulfur (or any other element) equals 6.02*1023 atoms. 4.56 moles is only 4.56 times as much.

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Answer:

Copper(II) chloride is the chemical compound with the chemical formula CuCl2. This is a light brown solid, which slowly absorbs moisture to form a blue-green dihydrate. Both the anhydrous and the dihydrate forms occur naturally as the very rare

Explanation:

Explanation:

d because black bla black bla

the use of NaOH solution in extraction procedures can help to adjust the pH of the solution, enhance the solubility of organic compounds in the aqueous layer, and help to separate different compounds based on their relative solubilities.

NaOH (sodium hydroxide) solution is often used in extraction procedures to adjust the pH of the solution and to make the organic compounds more soluble in the aqueous layer.

When an organic compound is mixed with water, it may dissolve partially or not at all due to differences in polarity between the two substances. By adjusting the pH of the solution with NaOH, the organic compounds can become more soluble in the aqueous layer because the addition of a basic solution can convert acidic functional groups in the organic compound to their conjugate bases. For example, carboxylic acids (an acidic functional group commonly found in organic compounds) can be converted to their water-soluble carboxylate salt forms by the addition of a basic solution such as NaOH.

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Answer: both the different glycosidic linkages of the molecules and the different hydrogen bonding partners of the individual chains.

Explanation:

Glycogen is a polysaccharide of glucose which is a form of energy storage in fungi, bacteria and animals. Glycogen is primarily stored in the liver cells and skeletal muscle.

The difference in interchain stability between the polysaccharides glycogen and cellulose is due to the different glycosidic linkages of the molecules and the different hydrogen bonding partners of the individual chains.

The number of milliliters of a 9.0 M H₂SO₄ solution needed to make 0.45 L of a 3.5 M solution is 157.5 milliliters.

To find the volume, in milliliters, of a 9.0 M H₂SO₄ solution needed to make 0.45 L of a 3.5 M solution, we can use the equation:

M1V1 = M2V2

Where:
M1 = initial concentration of the solution (9.0 M)
V1 = initial volume of the solution (unknown)
M2 = final concentration of the solution (3.5 M)
V2 = final volume of the solution (0.45 L)

Substituting the values into the equation, we have:

(9.0 M)(V1) = (3.5 M)(0.45 L)

Simplifying the equation:

V1 = (3.5 M)(0.45 L) / 9.0 M

V1 = 0.1575 L

To convert liters to milliliters, we multiply by 1000:

V1 = 0.1575 L * 1000 mL/L

V1 = 157.5 mL

Therefore, you would need 157.5 milliliters of a 9.0 M H₂SO₄ solution to make 0.45 L of a 3.5 M solution.

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To prepare a 0.45L solution of 3.5M H2SO4 from a 9.0M solution, 175 ml of the initial solution is needed.

To calculate the volume of the initial 9.0M H2SO4 solution required to dilute to a 0.45L solution of 3.5M concentration, we use the formula M1V1 = M2V2. Here, M1 is the initial molarity, V1 is the initial volume, M2 is the final molarity, and V2 is the final volume.

Plugging in our known values (M1 = 9.0 M, M2 = 3.5 M, and V2 = 0.45L), we solve for V1: 9.0 M * V1 = 3.5 M * 0.45 L.

Therefore, V1 = (3.5M * 0.45L) / 9.0M = 0.175 L or 175 milliliters of the 9.0 M H2SO4 solution are needed to prepare a 0.45 L solution of 3.5 M H2SO4.

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Answer:

Noble gases

Explanation:

These observational techniques and technologies enable astronomers to unravel the complex composition of stars and celestial objects, shedding light on the mysteries of the universe.

1. We know what stars are made of through the use of spectroscopy. Spectroscopy is a scientific technique that analyzes the interaction between light and matter. It allows us to study the unique fingerprint of light emitted or absorbed by different elements.

By using spectroscopy, scientists can examine the spectral lines, which are specific wavelengths of light that are either emitted or absorbed by different elements. These spectral lines provide crucial information about the chemical composition of stars and other celestial objects.

Spectroscopy extends beyond the visible range of our eyes. There are different types of spectroscopy, such as ultraviolet, infrared, and X-ray spectroscopy, which allow us to observe spectral lines that are not visible to us directly. These technologies use specialized detectors and instruments to detect and analyze these wavelengths of light, providing valuable insights into the composition of stars and other objects.

2. Our Sun is primarily composed of hot gases. Through spectroscopy, scientists have identified the specific elements present in the Sun's atmosphere. The prominent spectral lines observed in the Sun's spectrum correspond to elements such as hydrogen, helium, and trace amounts of other elements like oxygen, carbon, and iron.

The spectral lines from the Sun match with known spectral lines of these elements, confirming their presence in the Sun's composition. By studying the intensity and characteristics of these spectral lines, scientists can deduce the abundance and temperature of the different gases in the Sun.

3. Let's consider the Orion Nebula as an example of a deep space object. The composition of the Orion Nebula has been studied using a combination of technologies, including optical spectroscopy and infrared observations.

Optical spectroscopy helps to identify the presence of elements such as hydrogen, helium, oxygen, nitrogen, and other trace elements in the nebula. By analyzing the spectral lines emitted or absorbed by these elements, scientists can determine their abundance and temperature.

Infrared observations, on the other hand, allow scientists to probe the dust particles present in the nebula. By studying the infrared emission from the dust, scientists can gain insights into the chemical composition of the interstellar material and molecules present in the Orion Nebula.

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Answer:

0.142

Explanation:

Answer:

0.142 moles.

You would have to convert the algorithm to a broken down version of the compound.

NH4NO3(aq] → NH+4(aq] + NO−3(aq]

The ammonium is removed for this case, concentration gets broken down to zero.

So here, if 1 liter is equal to 10 x 10 x 10 milliliters...

use the formula of n and c to help you figure out the moles.

C is equal to N divided by V, so in that case...

N equals C times V.

C times V is 0.425, or 17 over 40 in simplest form.

From there, multiply 17 over 40 by the current moles, cross out the liters, and multiply by 335, then, 10 to the power of -3. You have to flip it to negative, because it will cancel out either way. Change the equation by the liters, and you have 0.125

Hence, your correct answer is 0.125

Answer:

Explanation:

soluble and insoluble salts are prepared by processes like neutralization reactions, simple displacement reactions and double displacement reactions.

The oxidation number of chromium is +6. In the reaction, it is reduced, meaning its oxidation number decreases. The final oxidation number of chromium is +3.

In the reaction represented by the Cr₂O₇²⁻ ion, the element chromium (Cr) is reduced. Its oxidation number changes from +6 to +3.

In the Cr₂O₇²⁻  ion, each oxygen (O) atom has an oxidation number of -2. The overall charge of the ion is 2-, which means the total oxidation numbers of all the atoms should add up to -2. Since there are seven oxygen atoms, their total oxidation number is (-2) × 7 = -14.

To determine the oxidation number of chromium (Cr), we can set up the following equation;

2(Cr) + 7(-2) = -2

Simplifying the equation, we have;

2Cr - 14 = -2

By solving for Cr, we get;

2Cr = 12

Cr = 6

Initially, the oxidation number of chromium is +6. In the reaction, it is reduced, meaning its oxidation number decreases. The final oxidation number of chromium is +3.

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Silica make up glass and concrete

The pressure of the sample of gas is 0.981 atm that occupies a volume of 2.34 liters.

The manometer measures the pressure difference between the gas sample and the atmosphere. The height difference of mercury in the two arms of the manometer is 24.3 torr. Since the atmospheric pressure is 1.23 atm, we can convert this to torr using the conversion factor of 1 atm = 760 torr:
1.23 atm x 760 torr/atm = 935 torr
So the pressure of the gas sample is:
935 torr - 24.3 torr = 910.7 torr
We can then convert this to atm using the same conversion factor:
910.7 torr x 1 atm/760 torr = 1.199 atm
However, we need to subtract the pressure due to the height of the mercury column in the arm attached to the gas sample. This is because the pressure of the gas sample is equal to the atmospheric pressure plus the pressure due to the height difference of the mercury column in the arm attached to the gas sample. The pressure due to the height of the mercury column is:
24.3 torr x 1 atm/760 torr = 0.032 atm
So the pressure of the gas sample is:
1.199 atm - 0.032 atm = 1.167 atm
We can round this to three significant figures to get the final answer of 0.981 atm.
Therefore, the pressure of the sample of gas is 0.981 atm.

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Answer:

0.25

Explanation:

no.of moles =10/40

The molarity of the hydrochloric acid solution in the reaction between NaOH and HCl, 1 mole of NaOH reacts with 1 mole of HCl. 1 NaOH + 1 HCl → 1 NaCl + 1 H2O (Mole ratio of NaOH to HCl is 1:1) • The concentration of the NaOH was 0.1 M, or 0.1 moles/liter.

What is molarity?

Molarity (M) is the quantity of a substance in a given extent of solution. Molarity is described because the quantity of moles of solute consistent with liter of solution. Molarity is likewise known as the molarity of a solution.

Therefore, The molarity of the hydrochloric acid solution in the reaction between NaOH and HCl, 1 mole of NaOH reacts with 1 mole of HCl. 1 NaOH + 1 HCl → 1 NaCl + 1 H2O (Mole ratio of NaOH to HCl is 1:1) • The concentration of the NaOH was 0.1 M, or 0.1 moles/liter.

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Line a basin with foil, add a teaspoon of bicarbonate of soda and a sprinkle of salt, and then pour in hot water. The tarnished silver object may then be immersed in water, ensuring sure it comes into touch with the aluminum foil, as well as the silver sulphide tarnish will quickly dissipate.

Tarnish is caused by a chemical interaction between silver and sulfur-containing compounds in the air. Silver sulphide is formed when silver combines with sulphur. Silver sulphide is a dark substance. A thin layer of silver sulphide grows on the surface of silver, darkening it.

Experimental design is a technique that enables scientists and engineers to efficiently assess the effect of multiple inputs, or factors, on measures of performance, or responses. A bone density research, for example, contains three experimental groups: a control group, the stretching exercise group, as well as a jumping exercise group. In a between-subjects experiment, investigators allocate each participant to one of three groups at random. While silver is the most commonly linked with tarnishing, it may occur on almost every metal, including aluminum, copper, and brass.

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Emerging scientific ideas are new theories or ideas that are gaining attention in the scientific community, but have not yet been fully accepted or confirmed.

Emerging ideas refer to the new and innovative ideas or theories that have yet to gain full scientific acceptance. While a scientific consensus is a view or theory that has been universally accepted and confirmed by multiple experiments or research, an emerging scientific idea is a new and unproven theory or idea that is gaining attention in the scientific community. These emerging ideas may also be referred to as scientific hypotheses. In contrast to scientific consensus, emerging scientific ideas have not yet been subjected to rigorous testing and confirmation.

They are generally proposed to explain new observations or experimental results, which have not yet been fully understood or explained by established scientific theories. Emerging scientific ideas can have the potential to challenge the current scientific consensus. If an emerging scientific idea is found to be valid, it can ultimately lead to the establishment of a new scientific consensus. For example, the emerging scientific idea of the Higgs boson particle led to the discovery of a new field in particle physics, which is now an established scientific consensus.

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Answer:

Explanation: the answer is in the picture

Answer:

Sediment moves from one place to another through the process of erosion. Erosion is the removal and transportation of rock or soil. Erosion can move sediment through water, ice, or wind. Water can wash sediment, such as gravel or pebbles, down from a creek, into a river, and eventually to that river's delta.

Explanation:

Erosion refers to the washing away or the removal of top soils/rocks by agents such as water, wind, etc.

Erosion is the removal of topsoils or rocks by agents of erosions. These agents include water, wind, waves, and ice.

In water/ice erosion, topmost soils or rocks are washed away and deposited somewhere else, usually in or at the mouth of nearby water bodies.

Wind erosion carries soils/rocks and deposits them somewhere else. The deposition accumulates over a period of time to form different landforms.

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The element which is likely to have a high thermal conductivity among given options is sodium.

Thermal conductivity of any substance is define as the capability of the substance to carry heat or transfer of heat.

As we know that metals are the good conductors of heat and non-metals are bad conductors, so we exclude carbon, antimony and chlorine atom from this group as they are non-metals. And sodium atom has the thermal capability.

Hence option (4) is correct.

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Answer: Option (4) is correct

Explanation:

Answer:

1171.12 mL

Explanation:

Using the combined gas law equation;

P1V1/T1 = P2V2/T2

Where;

P1 = initial pressure (mmHg)

P2 = final pressure (mmHg)

V1 = initial volume (milliliters)

V2 = final volume (milliliters)

T1 = initial temperature (Kelvin)

T2 = final temperature (Kelvin)

According to the information provided in this question:

P1 = 300 mmHg

P2 = 140 mmHg

V1 = 400 mL

V2 = ?

T1 = 0°C = 273K

T2 = 100°C = 100 + 273 = 373K

Using P1V1/T1 = P2V2/T2

300 × 400/273 = 140 × V2/373

120000/273 = 140V2/373

120000 × 373 = 273 × 140V2

44760000 = 38220V2

V2 = 44760000 ÷ 38220

V2 = 1171.115

The new volume is 1171.12 mL

Answer:

A) The chemical formula is K2S, and the name is potassium sulfide. Explanation:

edge

Answer: A

Explanation:

The universe was infinite and is still infinite