Symbol for sulfur uranium and phosphorus

Answer:

a) compound

b)element

c)mixture

d)compound

Explanation:

No, it does not pass the "fat pencil" test. Therefore, a normal distribution is not a reasonable model. Option B is the correct answer.

The "fat pencil" test is a quick visual check to determine if a dataset can be reasonably approximated by a normal distribution. In this case, the pH readings of wastewater show a significant deviation from a normal distribution. The presence of several low pH values (1.0) and a few high pH values (10.0, 10.5, 11.4) indicate a non-normal distribution with skewness and potential outliers. Therefore, it is not reasonable to model these data using a normal distribution.

Option B is the correct answer.

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Explanation:

[Ne] 3s² 3p⁵

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Atomic number: 17

Symbol: Cl

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Argon

Answer:

2.79 % error

Explanation:

Percent Error = 100 x [(Actual - Measured) / Actual]

Percent Error = 100 x [(17.900 - 14.700) / 17.900]

Percent Error = 100 x [0.5 / 17.900]

Percent Error = 100 x 0.02793

Percent Error = 2.7932 % or 2.79 %

When hydrogen is added to liquid oil, it creates a type of fat known as hydrogenated fat. This process is called hydrogenation, and it is often used in food manufacturing to make products like margarine, shortening, and some types of snack foods.

Hydrogenated fats have a longer shelf life and are more stable at high temperatures than liquid oils, making them useful for baking and frying. However, hydrogenated fats also contain high levels of trans fats, which are known to increase the risk of heart disease.

In recent years, many food manufacturers have switched to using other types of fats, such as palm oil or canola oil, to avoid the negative health effects associated with trans fats. In general, it is recommended to limit the consumption of foods high in hydrogenated fats and trans fats to maintain good health.

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Based o the nature of the reactants and products:

A chemical reaction is a reaction that results in changes in the chemical properties of substances.

A chemical reaction results in the formation of new products.

There are several types of chemical reactions such as:

This is illustrated as follows: AB + C ---> AC + B

This is illustrated as follows: AB + CD ---> AC + BD

Hence, two ionic compounds react to produce two iob=nic compounds.

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Answer:

they ate lelo pudina hahahha

The correct answer for question 20 is: Electricity and water.

For question 3, the correct answer is: International agreements that aim to reduce the impact of human activities on the environment. Environment conventions are international agreements or treaties that are established among nations to address environmental issues and promote sustainable practices. These agreements aim to reduce pollution, conserve natural resources, protect ecosystems, and mitigate climate change. They involve negotiations and commitments from participating countries to implement measures and policies to minimize the adverse impacts of human activities on the environment.

Environment conventions are international agreements that bring together nations to collectively address environmental challenges. These agreements are crucial for promoting global cooperation and establishing frameworks for sustainable development. Through negotiations and commitments, countries work towards reducing pollution, conserving biodiversity, mitigating climate change, and preserving natural resources for future generations.

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The mass is going to increase because the iron was combined with oxygen.

We know that the mass of the object can be obtained by the use of a weighing balance. Again it is very important that we should bear in mind that what has happened here as the iron is rusting is actually a chemical change.

The ion was bale to combine with oxygen in the presence of moisture, Given the fact that the iron has combined with oxygen, we no longer have a pure iron hence the mass of the iron is definitely going to become increased.

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If a piece of iron is weighed, allowed to go rusty, and weighed again, it has increased in mass, this is because of the formation of rust.

Rusting is the slow oxidation of iron in the presence of oxygen and moisture that results in the creation of hydrated iron oxide. Rust is a brown coating that formed when iron and oxygen in the air combine, when moisture is present. Rust is a reddish-orange flaky material.

The metal surface is where rusting is most prone to happen since it is an oxidation process.

When rust forms, the mass of the iron object is increased by the mass of oxygen that has combined with some of the iron.

If a piece of iron is weighed, allowed to go rusty, and weighed again, it has increased in mass, this is because of the formation of rust.

\(Fe_{2} O_3.nH_2O\) - this will be the new composition and when you find the molar mass of this compound its obviously greater than Fe (Iron).

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The method of seed dispersal of the pea plant happens in a mechanical way when the seeds disperse in different directions in what is known as explosive dispersal.

This refers to the movement of seeds through a variety of means from the parent plant.

Hence, we can see that the method of dispersal for the blueberry plant is through the process of suc--kering which occurs when new shoots grow and form new suc--kers from the main root cluster.

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The concentration of the unknown sulfuric acid sample is 0.0909M.

The first step in solving this problem is to calculate the molarity of the sodium hydroxide solution used in the titrations. This can be done using the balanced chemical equation for the reaction between oxalic acid dihydrate and sodium hydroxide:

\(H_{2} C_{2} O_{4}.2H_{2} O + 2NaOH\) → \(Na_{2} C_{2} O_{4}. 2H_{2}O\)  + \(2H_{2} O\)

From the equation, we can see that 2 moles of NaOH react with 1 mole of   \(H_{2} C_{2} O_{4}.2H_{2}O\) . Therefore, the number of moles of NaOH used in the titration can be calculated as follows:

moles NaOH = (volume of NaOH solution) x (molarity of NaOH solution)

moles NaOH = 25.30 mL x (1 L / 1000 mL) x (1 mol \(H_{2} C_{2} O_{4}.2H_{2}O\) / 126.07 g) x (2 mol NaOH / 1 mol \(H_{2} C_{2} O_{4} .2H_{2}O\)) x (1 L / 20.00 mol NaOH)

moles NaOH  = 0.002012 mol

Using the volume and moles of NaOH used in the first titration, we can calculate the molarity of the NaOH solution:

Molarity of NaOH = moles NaOH / volume of NaOH solution

Molarity of NaOH = 0.002012 mol / (25.30 mL x (1 L / 1000 mL))

Molarity of NaOH = 0.0796 M

Now we can use the volume and molarity of NaOH from the second titration to calculate the number of moles of sulfuric acid in the unknown sample:

moles \(H_{2} SO_{4}\) = (volume of NaOH solution) x (molarity of NaOH solution)

moles \(H_{2} SO_{4}\) = 22.85 mL x (1 L / 1000 mL) x (0.0796 mol NaOH / 1 L)

moles \(H_{2} SO_{4}\) = 0.001818 mol

Finally, we can calculate the concentration of the sulfuric acid:

Molarity of \(H_{2} SO_{4}\) = moles H2SO4 / volume of sulfuric acid

Molarity of \(H_{2} SO_{4}\) = 0.001818 mol / (20.00 mL x (1 L / 1000 mL))

Molarity of \(H_{2} SO_{4}\) = 0.0909 M

Therefore, the concentration of the unknown sulfuric acid sample is 0.0909 M.

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Answer:

a nucles

b electron cloud

Explanation:

The most likely cause of earthquakes that occur in the area shown on the map is due to fault lines in the earth's crust.

Earthquakes are natural phenomena characterized by the shaking or trembling of the Earth's surface.

They occur due to the sudden release of energy in the Earth's crust along fault lines, which creates seismic waves that propagate through the Earth.

The Earth's crust is composed of several large tectonic plates that float on the semi-fluid layer of the Earth's mantle.

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Answer:

60.0089

Explanation:

Answer:

B I think

Explanation:

Answer:

B, I'm guessing by their characteristics

Ammonium sulphide ((NH4)3S) contains roughly 20.55% nitrogen by mass.

Two nitrogen (N) atoms, eight hydrogen (H) atoms, one sulphur (S) atom, and four oxygen (O) atoms are all present in one molecule of ammonium sulphate (NH4)2SO4. There are therefore 15 atoms in total. We are aware that the relative atomic masses of each element present in a compound can be added to determine its molar mass.

N: 1 x 14.007 g/mol equals 14.007 g/mol

The molar mass of ammonium sulphide in its entirety is:

(1 x 14.007 g/mol) + (3 x 1.008 g/mol) + (1 x 32.06 g/mol) = 68.153 g/mol

We can use the following formula to determine the nitrogen proportion by mass:

% N = (mass of N / total mass of compound) x 100%

Plugging in the values, we get:

% N = (14.007 g/mol / 68.153 g/mol) x 100% ≈ 20.55%

As a result, there is around 20.55% of nitrogen by mass in ammonium sulphide ((NH4)3S).

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2180.07 g of mercury(II) oxide (HgO) is needed to produce 322 g of oxygen (O2).The balanced chemical equation for the decomposition of mercury(II) oxide is given below:HgO → Hg + O2

To find the amount of mercury(II) oxide (HgO) required to produce 322 g of oxygen (O2), we can use stoichiometry.

Using the balanced chemical equation above, we can see that 1 mole of HgO produces 1 mole of O2.

We can calculate the number of moles of O2 produced by dividing the given mass by the molar mass of O2.

Molar mass of O2 = 2 × 16.00 g/mol

= 32.00 g/mol

Number of moles of O2 = 322 g ÷ 32.00 g/mol

= 10.0625 mol

Since 1 mole of HgO produces 1 mole of O2, the amount of HgO required to produce 10.0625 moles of O2 is also 10.0625 moles.

The molar mass of HgO is 216.59 g/mol, so the mass of HgO required is:

Mass of HgO = 10.0625 mol × 216.59 g/mol

= 2180.07 g

Therefore, 2180.07 g of mercury(II) oxide (HgO) is needed to produce 322 g of oxygen (O2).

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Many minerals are formed from various geological processes, including the interaction of water with different substances. Water plays a crucial role in mineral formation through several mechanisms.

Here are a few ways in which minerals can be formed with the involvement of water:

Precipitation: Minerals can precipitate out of water when the concentration of dissolved substances exceeds their solubility limit. For example, when water evaporates or cools, the dissolved minerals can crystallize and form solid deposits. This process is responsible for the formation of minerals like gypsum, halite (rock salt), and various evaporite minerals found in salt flats.

Hydrothermal processes: In hydrothermal systems, water heated by geothermal activity can dissolve minerals from rocks and transport them through fractures and fissures. As the water cools and pressure decreases, the minerals can precipitate and form hydrothermal deposits. Examples include gold, silver, copper, and various metal sulfides found in hydrothermal veins.

Weathering and alteration: Water can cause the breakdown and alteration of rocks through chemical weathering. This process involves the interaction of water with minerals in the presence of oxygen and acids, leading to the formation of new minerals.

For instance, the weathering of feldspar minerals can produce clay minerals like kaolinite. Similarly, the alteration of iron-bearing minerals can result in the formation of iron oxides like hematite and goethite.

Sedimentary processes: Water is a crucial agent in the formation of sedimentary rocks, which can contain various minerals. Sedimentary minerals often originate from the weathering and erosion of preexisting rocks.

The eroded particles, including minerals, are transported by water (rivers, streams, and ocean currents) and eventually deposited in sedimentary environments such as deltas, beaches, and riverbeds. Over time, these sediments can become compacted and cemented to form rocks like sandstone, shale, and limestone.

It's important to note that while water is involved in the formation of many minerals, not all minerals require water for their formation. Some minerals can be formed through volcanic activity, metamorphism, or even in extraterrestrial environments where water is scarce or absent.

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A Hertzsprung-Russell (H-R) diagram shows the relationship between a star's luminosity (brightness) and its surface temperature.

(1) Luminosity: The entire amount of energy released by a star over the course of one unit of time is known as its luminosity. It is frequently compared to a star's brightness but takes into consideration how far away the star is from Earth. Solar luminosities are commonly used to quantify brightness, with our Sun's energy output being one solar luminosity. Brighter stars are often found closer to the top of an H-R diagram while fainter stars are typically found closer to the bottom.

(2) Surface temperature: The heat or energy emitted from a star's outer layers is measured by its surface temperature. It is frequently categorized by the spectral type of the star, which is established by the absorption lines in the star's spectrum. Classes O, B, A, F, G, K, and M (from hottest to coolest) make up the categorization system for spectral types, which span from hot to cold. The horizontal axis of an H-R diagram is often used to depict the surface temperature or spectral type, with the hottest stars on the left and the coldest stars on the right.

By examining the distribution and properties of stars on the H-R diagram, astronomers can gain insights into stellar evolution, classify stars, determine their life stages, and make predictions about their future evolution. Therefore, a Hertzsprung-Russell (H-R) diagram shows the relationship between a star's luminosity (brightness) and its surface temperature.

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Answer:

The partial pressure of methane CH₄ is 239.4 torr.

Answer:

The formation of the bond releases energy. This is because the individual hydrogen atoms are more unstable than when they are joined together. Stability brings about the release of energy, and this would be an exothermic reaction.

A carbocation is a carbocation that has a positive charge on a carbon atom. A vinylic carbocation is a carbocation that has a positive charge on a carbon atom that is bonded to a vinyl group. A secondary vinylic carbocation is a carbocation that has a positive charge on a carbon atom that is bonded to two other carbon atoms and a vinyl group.

The orbital diagram of a secondary vinylic carbocation: An orbital diagram is a visual representation of an atom's electronic structure. The orbital diagram of a secondary vinylic carbocation would show the carbon atom with a positive charge and its neighboring atoms. The carbon atom with the positive charge would have three valence electrons in the 2p orbital and would have an empty 2p orbital. The neighboring carbon atoms and the vinyl group would be represented by their valence orbitals, which would overlap with the carbon atom with the positive charge, forming a pi bond. The overlap of these orbitals would help stabilize the positive charge on the carbon atom with the positive charge.

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Answer:

here is my answerrrrrrr

Consequently, the protein molecule has a length of 315 x 10^-9 metres.

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Answer:

False

Explanation:

Humans and plans do it as well

Answer:

False

Explanation:

Cellular respiration takes place in the cells of all organisms. It occurs in autotrophs such as plants as well as heterotrophs such as animals.

answer

When an electron temporarily occupies an energy state greater than its ground state, it is in an excited state. An electron can become excited if it is given extra energy, such as if it absorbs a photon, or packet of light, or collides with a nearby atom or particle

Answer:

Deeper Voice (low-frequency sound)

Explanation:

For me, I would talk to an elderly person who has trouble hearing me in a deeper voice because at least it's not too loud. If you talk to a person with a higher voice (high-frequency) it can just affect their hearing more.... when you scream, that a high-frequency and sometimes it bothers your ears, so for me in general I would use a deeper voice.

Hope this helped!

Have a supercalifragilisticexpialidocious day!

Answer:

An organism that eats another organism is called a consumer