Be sure to answer all parts. a mixture of 0.0333 g of hydrogen and 0.0165 mol of oxygen in a closed container is sparked to initiate a reaction. how many grams of water can form?

The given statement " William Aston created the mass spectrograph to analyze and separated them, found 218 and found mass and percent abundance of each atoms" is false.

The mass spectrograph was not invented by William Aston. It was actually invented by J.J. Thomson in the early 20th century.

J.J. Thomson's work with the mass spectrograph led to the discovery of isotopes, which are different forms of an element with the same number of protons but different numbers of neutrons. Isotopes have different masses, and the mass spectrograph allowed scientists to separate and analyze them based on their mass-to-charge ratio.

The process of using a mass spectrograph to determine the mass and percent abundance of isotopes is known as mass spectrometry. It involves ionizing a sample, separating the ions based on their mass-to-charge ratio, and detecting the ions to determine their abundance.

The completed question is given as,

State true or false

William Aston created the mass spectrograph to analyze and separated them, found 218 and found mass and percent abundance of each atoms.

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Explanation:

Oxidation Numbers. It is often useful to follow chemical reactions by looking at changes in the oxidation numbers of the atoms in each compound during the reaction. Oxidation numbers also play an important role in the systematic nomenclature of chemical compounds.

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Answer:

9.9363 x 10^23  atoms

Explanation:

1.65   x   Avagadro's Number

1.65 * 6.022 x 10^23 =

Glass is a transparent material as it allows light to pass through.

The question is incomplete as the images that have been referred to here are not shown and as such I will just consider glass as a transparent material.

Glass, which is primarily made of silicon dioxide with a few impurities, is more properly classified as a supercooled liquid than as a solid. It is translucent because there are no internal grain boundaries.

The photon instead moves through unhindered. The glass is translucent as a result.

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Answer:

b

Explanation:

b

The name monocalcium phosphate does not follow the naming system of the IUPAC for ionic compounds. This is because monocalcium phosphate is not a compound that consists of ions .

The naming of the compounds under IUPAC naming standards is done by looking at the composition of the ions of the compound. Inorganic compounds are made up of ions that are held together through ionic bonds. The ions have an electrical charge which is indicated by a superscript to the right of the chemical symbol.

The reason why it does not make sense for this name to follow the IUPAC naming system is that monocalcium phosphate is not an ionic compound, it is a salt compound that consists of two different molecules. These two molecules are held together through hydrogen bonds instead of ionic bonds. Therefore, it is not named according to the IUPAC naming system.

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Answer:

Your answer would be "Polyatomic anions."

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The substances that exhibit hydrogen bonding are A. HF and B. \(CH_3NH_2\) .

The substances that exhibit hydrogen bonding are those that have hydrogen atoms bonded to highly electronegative atoms such as fluorine (F), oxygen (O), or nitrogen (N). Based on this criterion, the correct answer would be:

A. HF (hydrogen fluoride)

B. \(CH_3NH_2\) (methylamine)

C. \(PH_3\) (phosphine) and D. \(CH_4\) (methane) do not have hydrogen atoms bonded to highly electronegative atoms, so they do not exhibit hydrogen bonding.

Therefore, the substances that exhibit hydrogen bonding are HF and  \(CH_3NH_2\) .Hence, option A and B is correct .

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Answer:

mercury and bromine are the only two elements

The adjacent nucleotides are bound to each other through a phosphodiester bond in a nucleic acid.

Nucleic acid is a biopolymer made up of nucleotide monomers that make up nucleic acid chains. The nucleotide's three components are a five-carbon sugar, a phosphate group, and a nitrogenous base. Nucleic acids are present in all living cells, including viruses and bacteria, and they play a critical role in storing, transmitting, and expressing genetic information. RNA and DNA are two types of nucleic acids.

The phosphate group in one nucleotide forms a phosphodiester bond with the hydroxyl group on the sugar molecule of the next nucleotide in line in nucleic acids. This reaction is carried out by removing a molecule of water, resulting in a strong covalent bond between two nucleotides. These bonds make up the sugar-phosphate backbone of a nucleic acid chain, which is fundamental to its structure.

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According to the question to administer 160 mg of ibuprofen, you need 8 ml of Children's Motrin.

Ibuprofen is a non-steroidal anti-inflammatory drug (NSAID) commonly used for pain relief, fever reduction, and inflammation reduction. It is one of the most commonly used medications for these purposes. Ibuprofen is available in both prescription and over-the-counter forms, and is most commonly sold as tablets, capsules, and chewable tablets. Ibuprofen works by blocking the production of certain chemicals in the body that cause pain, fever, and inflammation.

The conversion factor to solve this problem is 1 ml of Children's Motrin for every 20 mg of ibuprofen. This is because 5 ml of Children's Motrin contains 100 mg of ibuprofen, so dividing 100 by 5 will give you the conversion factor of 1 ml for every 20 mg. Therefore, to administer 160 mg of ibuprofen, you need 8 ml of Children's Motrin.

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Answer:

The answer is 18.01528.

Explanation:

This compound is also known as Water or Dihydrogen Monoxide. The SI base unit for amount of substance is the mole.

Answer:

They fall slower.

Explanation:

moon's gravitation force is effected by the mass of the moon

but because the moon has less mass,

objects fall slower because it has less gravitation force

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The list that  only includes terms that describe Cesium (Cs) is option (b) i.e atom, element, pure substance .

Atom, is the smallest unit of matter that has the characteristic properties of a chemical element .The atom is the basic building block of chemistry.

Element  is a pure substance consisting of only one type of atom which all have the same numbers of protons. Elements are chemically the simplest substances and hence cannot be broken down using chemical reactions.

Hence ,in the list that  only includes terms that describe Cesium (Cs) is option (b) i.e atom, element, pure substance .

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Answer:

Boiling point, temperature at which the pressure exerted by the surroundings upon a liquid is equaled by the pressure exerted by the vapour of the liquid; under this condition, addition of heat results in the transformation of the liquid into its vapour without raising the temperature. Water at its boiling point.

Explanation:

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Answer:

The overall charge of the oxygen atom is zero, because the atom contain an equal number of electrons and protons.

Explanation:

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Answer:

If the data is given we can find out the density, melting point and solubility by using the formula given below.

Explanation:

Density is defined as mass of the substance per unit volume of the solution and its formula is p = mass / volume. We can calculate melting point by noting the temperature at which the particular substance starts melting. Solubility refers to the maximum amount of a substance or solute that can be dissolved in a solvent at a given temperature. Divide the mass of the compound by the mass of the solvent and then multiply by 100 g we get solubility in g or in 100g.

The pH differential between two components of a system. Corrosion is a natural process that occurs when a material, usually a metal, starts to degrade due to the chemical reactions with its environment. The process of corrosion typically involves the flow of electrons between the two components of a system, which are at different pH levels.

This pH differential creates an electrochemical cell that drives the corrosion process. When a system has a pH differential, the more acidic component (lower pH) acts as an anode, while the more alkaline component (higher pH) acts as a cathode. This electrochemical cell causes the flow of electrons from the anode to the cathode, resulting in the oxidation of the anode and the reduction of the cathode. The oxidation process leads to the formation of corrosion products such as rust or oxide layers on the surface of the anode material. To summarize, corrosion occurs when there is a pH differential between two components of a system, leading to the formation of an electrochemical cell that drives the degradation process.

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To determine Eo for the given reaction, we can use the equation:  Eo(cell) = Eo(cathode) - Eo(anode)

The reduction potential for the cathode is the reduction potential of Ti²⁺, which is -1.63 V.

The reduction potential for the anode is the reduction potential of Fe³⁺, which is 0.77 V.

Plugging the values into the equation, we have:

Eo(cell) = (-1.63 V) - (0.77 V)

Eo(cell) = -2.40 V

Therefore, the standard cell potential (Eo) for the given reaction is -2.40 V.

This negative value indicates that the reaction is not spontaneous under standard conditions. The electrons flow from the anode (Fe³⁺) to the cathode (Ti²⁺), resulting in a negative cell potential. The reaction would require an external energy source to proceed.

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Miescher’s work on the discovery of nucleic acids and his work on their chemical composition was a critical first step in understanding the nature of genetic material.

The work of Johann Friedrich Miescher significantly contributed to our understanding of the chemical nature of genetic material. In 1869, Miescher isolated a novel substance from the nuclei of white blood cells, which he called "nuclein" - later known as nucleic acids. His discovery laid the foundation for understanding the role of nucleic acids in heredity.

Miescher's experiments demonstrated that nuclein was distinct from proteins and carbohydrates, hinting at a unique biological function. Further research by other scientists, inspired by Miescher's findings, revealed that nuclein was composed of two types: DNA (deoxyribonucleic acid) and RNA (ribonucleic acid). This eventually led to the identification of DNA as the primary carrier of genetic information.

Miescher's pioneering work paved the way for subsequent discoveries in molecular biology, such as Watson and Crick's elucidation of the DNA double helix structure and the central dogma of molecular biology, which explains how genetic information is transferred from DNA to RNA to proteins. In summary, Johann Friedrich Miescher's research was instrumental in establishing nucleic acids as the key components of genetic material and in advancing our understanding of molecular biology.

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The two ions present in the solution are:

1. Sodium ion, Na⁺

2. Hydroxide ion, OH¯

The correct answer to the question is the 3rd option. The sodium ion is positive, and the hydroxide ion is negative.

Ions are atoms or group of atoms which possess an electric charge.

Aqueous Sodium hydroxide, NaOH contains sodium ion and hydroxide ion.

The sodium ion is positive while the hydroxide ion is negative as illustrated below:

NaOH(aq) —> Na⁺(aq) + OH¯(aq)

From the illustration above, we can conclude that the correct answer to the question is the 3rd option. The sodium ion is positive, and the hydroxide ion is negative.

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Answer:

To find the unit rate of the average number of servicemen buried per acre, you can divide the total number of servicemen (300,000) by the total number of acres (624).

Here's the calculation:

```

300,000 servicemen / 624 acres = 480.7692307692308

```

So, on average, there are approximately 480.77 servicemen buried per acre.

The pillar of sustainability broken by recycling electronics in India is environmental sustainability. Implementing a law that restricts electronics recycling to the US would not necessarily be the most effective solution, as it overlooks the complex global dynamics of electronic waste management.

Recycling electronics in India often involves improper disposal methods, such as burning or dismantling without proper safety measures. This leads to environmental pollution, including the release of hazardous substances into the air, soil, and water, thus violating the principle of environmental sustainability.

However, simply mandating that electronics can only be recycled in the US may not be the most optimal solution. Electronic waste is a global issue, and restricting recycling to a single country disregards the fact that electronic products are manufactured and consumed worldwide. A more comprehensive approach to addressing electronic waste would involve international cooperation, strict regulations, and monitoring of recycling practices to ensure they meet environmental standards.

Efforts should focus on improving recycling practices globally, including promoting responsible electronic waste management, developing sustainable recycling infrastructure in multiple countries, and encouraging the adoption of safe and environmentally friendly recycling practices. This approach would foster global sustainability and address the challenges associated with electronic waste disposal more effectively than a geographically limited restriction.

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The molar mass of the unknown gas is 555.6 g/mol that can be calculated using Grahams' las of effusion.

The molar mass of gas 1= M1

The molar mass of gas 2= M2

As per Graham's law of effusion,

Rate1/Rate2= (M2/M1)1/2

Here, rate 1 is the rate of effusion of the first for the first gas and rate 2 is the rate of effusion for the second gas.

Substituting the given values,

Rate 1= 1.0 L/30 s

Rate 2= 1.0 L/125 s

Then,

[1/30]/[1/125]=(M2/32.0 g/mol)1/2

M2=555.6 g/mol

Therefore, the molar mass of the unknown gas is 555.6 g/mol.

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The assumption that the aqueous activity of H4SiO4 is controlled by amorphous silicic acid (am-H4SiO4) rather than by quartz is based on the fact that am-H4SiO4 is more reactive and readily available for dissolution in soils than quartz.

This means that in soils, the concentration of dissolved H4SiO4 is more likely to be controlled by the dissolution of am-H4SiO4 rather than by quartz.

Additionally, the dissolution of quartz requires more energy than the dissolution of am-H4SiO4, making it a slower process.

Therefore, when evaluating the stability of soil silicates and aluminosilicates, the assumption is made that the aqueous activity of H4SiO4 is controlled by am-H4SiO4 rather than by quartz because am-H4SiO4 is more readily available and reactive in soils.

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Answer:

Arsenic (As)

Explanation:

Answer:

Explanation:

-Octet forms when the valence electrons are gained, lost or shared.

-In order to become stable, which has 8 valence electrons (octet), nonmetal groups such as group 17, needs to gain 1 more electron to become 8/ octet.

When gaining that 1 electron, group 17 elements become negative ion or anions

-For metal groups such as group 1, they need to lose that 1 electron to become stable. When they lose that 1 electron, they become positive ion which is cation.

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Answer:

yo what

Explanation:

The substance that possesses the larger standard entropy is 1 mol of As4(g) at 300 ∘C, 0.01 atm. As4 has a larger size and more complex structure than P4.

The standard entropy of a substance is a measure of the disorder or randomness of its particles. The higher the entropy, the more disordered the particles are. In this case, we are comparing the standard entropies of P4(g) and As4(g) at the same temperature and pressure.

Standard entropy is a measure of the randomness or disorder of a substance. Generally, larger, more complex molecules have higher standard entropy values than smaller, simpler molecules. As4 is larger and heavier than P4 due to the higher atomic weight of arsenic compared to phosphorus.
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