A balloon has a volume of 2. 32 liters at 24. 0°c. The balloon is heated to 48. 0°C. Calculate the new volume of the balloon.

Elements in group 7A typically form ions with the same charge as the hydride ion formed from hydrogen.

The elements of group 7A are called halogens because these forms salts when reacted with metals. All elements of group 7A have seven valence electron in their outer shell. A halogen needs only one more electron to acquire a stable electronic configuration. Thus these elements forms anions having charge of -1. Hydride ion is also an anion of hydrogen having charge of -1.

The elements of group 7A are fluorine, chlorine, bromine, iodine, astatine, tennessine.

Hydrogen can form hydride ions, and elements in group 7A form ions with the charge that is -1 as of the hydride ion.

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Answer:

Explanation:

A material through which electrons can move easily is referred to as a conductor. Conductors have a high electrical conductivity, which means that electrons can flow through them with relative ease. This is due to the presence of free electrons in the material, which are not tightly bound to individual atoms. Examples of common conductors include metals such as copper, aluminum, and gold.

All of the options listed are required for proposing a valid reaction mechanism. The elementary steps must sum to the overall balanced equation, the steps must be physically reasonable, and the rate law must correlate with the experimental rate law.

To propose a valid reaction mechanism, you should consider the following parameters:

1. Elementary steps sum to overall balanced equation: This ensures that the individual elementary steps add up to form the overall reaction, and the mass and charge are balanced in the process.

2. Physically reasonable elementary steps: The proposed elementary steps should be feasible based on known physical and chemical principles, ensuring that the mechanism is realistic.

3. Correlation of rate law with experimental rate law: The rate law predicted by the proposed mechanism should match the experimentally observed rate law, indicating that the mechanism is consistent with the observed behavior of the reaction.

So, all three parameters are required for proposing a valid reaction mechanism.

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Answer:

N2H6 has more

Explanation:

(Mr)N2H6= 14.007x2+1x6=34g/mol

n=10/34=0.29mol

number of molecules=0.29x6.02x10^23= 1.74x10^23

(mr)PCl3=30.974+35.45x3=137.32g/mol

n=10/137.32=0.073

number of molecules=0.073x6.02x10^23= 4.39x10^23

Iodine is an essential element that the human body needs for proper thyroid function and the production of thyroid hormones. Thyroid hormones play a vital role in many important bodily functions, including metabolism, growth, and development. However, in areas where soil and water are deficient in iodine, people may not consume enough iodine in their diet, leading to iodine deficiency.

To address this issue, the United States government began adding iodine to table salt in the 1920s, a practice that continues to this day. This is known as iodized salt. Iodized salt is a simple and cost-effective way to ensure that the population gets enough iodine in their diet to prevent iodine deficiency, which can cause a range of health problems, including goiter (enlarged thyroid gland), hypothyroidism, and intellectual disabilities in children.

Iodine deficiency is still a significant problem in many parts of the world, particularly in developing countries. The addition of iodine to salt has been one of the most successful public health interventions in history, helping to prevent iodine deficiency and its associated health problems.

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At pH 5.0 the solution is buffer. A buffer solution contains ethanoic acid and its conjugate base; the pKa of ethanoic acid is 4.74.

A buffer solution will work between +/- 1 unit of pH around its pKa value of weak acid. A buffer solution is most effective for both for acid addition and base addition when the pH near to pKa value of weak acid. It is far essential to have answers whose pH does now no longer alternate even at the addition of sturdy alkalis or sturdy acids. Such solutions are known as buffer solution. Buffer capability is the capability of a buffer technique to withstand alternate in its pH. The equation is given by, pH = pKa + log [Salt] / [Acid]

Thus, the pH of the buffer solution is 5.0.

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Therefore, the volume of nitrous oxide decomposed is 10.0 mL, and the volume of nitrogen collected is also 10.0 mL.

The law of definite proportions, also known as the law of constant composition, states that a given chemical compound always contains the same elements in exactly the same proportions by mass. This means that the ratio of the masses of the elements in a compound is always the same, regardless of the source of the compound or the method by which it was prepared. This law is one of the fundamental principles of chemistry and is important for understanding the composition and properties of chemical compounds.

Here,

To answer this question, the principle of the law of definite proportions is used. According to this law, in a chemical compound, the elements are always combined in a fixed proportion by mass.

Now, let's use this principle to solve the problem:

The chemical equation for the decomposition of nitrous oxide (N₂O) is:

N₂O → N₂ + O₂

According to the equation, 1 mole of N₂O will produce 1 mole of N₂ and 1 mole of O₂. Therefore, the ratio of volumes of N₂O to O₂ is 1:1.

Assuming the gases are measured under the same conditions of temperature and pressure, we can use the volume ratio to calculate the volume of nitrous oxide that decomposed.

If 10.0 mL of O₂ is formed, then the volume of N₂O decomposed is also 10.0 mL.

Similarly, since the volume ratio of N₂ to O₂ is also 1:1, the volume of nitrogen collected is also 10.0 mL.

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awnser: The teeth aid in mechanical digestion by masticating (chewing) food. Mastication permits easier deglutition (swallowing) and faster chemical breakdown in the digestive tract. During mastication, salivary glands secrete saliva to soften the food into a bolus (semi-solid lump).

Answer:

0.416 mol CaBr₂

General Formulas and Concepts:

Chemistry - Atomic Structure

Explanation:

Step 1: Define

83.1 g CaBr₂

Step 2: Identify Conversions

Molar Mass of Ca - 40.08 g/mol

Molar mass of Br - 79.90 g/mol

Molar Mass of CaBr₂ - 40.08 + 2(79.90) = 199.88 g/mol

Step 3: Convert

\(83.1 \ g \ CaBr_2(\frac{1 \ mol \ CaBr_2}{199.88 \ g \ CaBr_2} )\) = 0.415749 mol CaBr₂

Step 4: Check

We are given 3 sig figs. Follow sig fig rules and round.

0.415749 mol CaBr₂ ≈ 0.416 mol CaBr₂

From highest to lowest atomic radius:

Potassium > Lithium > Carbon > Boron > Fluorine.

Atomic number is the number of protons found in the nucleus of an atom, which determines the element and its unique properties. It is denoted by the symbol "Z" and is listed in the periodic table of elements along with the element's symbol, name, and atomic mass.

The nucleus is the central core of an atom, composed of protons and neutrons, which are collectively known as nucleons. It is located at the center of the atom and contains almost all of its mass. The number of protons in the nucleus determines the identity of the atom and is referred to as the atomic number. The nucleus is held together by the strong nuclear force, which is one of the four fundamental forces of nature.

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Answer:

coverwow customer care number 8388026087//8388026087

Answer: C. oil

Explanation:

Answer:

n a group of rats, some individuals have a normal-sized body and others have a dwarf body. In this group, the gene for the body size trait has two alleles. The allele for a normal-sized body (B) is dominant over the allele for a dwarf body (b).

Squeaky, a rat from this group, has a dwarf body.

Based on Squeaky's phenotype for the body size trait, which of the following could be Squeaky's genotype for the body size gene?

Explanation: can someone pls help?

Answer:

The Answer Is C4H5N2O The Second One

Explanation:

Answer:

c

Explanation:

The element that can be found in both plays and stories is "characters."

Characters are an essential element of both plays and stories. They are the individuals or entities that drive the narrative, interact with each other, and contribute to the development of the plot. In plays, characters are typically portrayed by actors who perform their roles on stage, while in stories, characters are described and depicted through written words.

Characters can be central or supporting figures in a play or story, and they play a vital role in engaging the audience or readers. They have distinct personalities, motivations, and relationships that influence the events and conflicts within the narrative. Through their actions, dialogue, and character development, they contribute to the overall themes and messages conveyed by the play or story.

Whether it is a theatrical production or a written narrative, the presence and portrayal of characters are fundamental to creating engaging and compelling plays and stories.

Thus, the element that can be found in both plays and stories is "characters."

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The density of the metal beads is 12.47 g/mL (option c).

1. Determine the mass of the metal beads:

  Mass of beaker + metal beads = 205.5 g

  Mass of empty beaker = 82.0 g

  Mass of metal beads = (Mass of beaker + metal beads) - (Mass of empty beaker)

                    = 205.5 g - 82.0 g

                    = 123.5 g

2. Determine the volume of water displaced by the metal beads:

  Initial volume of water in the graduated cylinder = 60.9 mL

  Final volume of water in the graduated cylinder = 70.8 mL

  Volume of water displaced = Final volume - Initial volume

                           = 70.8 mL - 60.9 mL

                           = 9.9 mL

3. Calculate the density of the metal beads:

  Density = Mass / Volume

  Density = 123.5 g / 9.9 mL

  Density = 12.47 g/mL

Therefore, the density of the metal beads is 12.47 g/mL (option c).

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Answer:

can hydrogen be used to make oxygen? and how do you know?

Explanation: yes because H1 is water

Answer:

see the answer

Explanation:

Yes hydrogen can be used to make oxygen

because H1 is water

Boyle's Law, which states that at constant temperature, a gas's pressure and volume are inversely related, can be used to address this issue.

Boyle's Law says that P1V1 = P2V2.

Where: P1 = The gas's initial pressure (in torr)

V1 is the container's initial volume (in millilitres).

P2 stands for the gas's post-volume change pressure (unknown).

V2 is the revised volume of the container (in millilitres).

Let's solve for P2 by entering the provided values into the equation:

P₁ = 757.2 torr

V2 = 132.5 mL V1 = 81.4 mL

P2 = ambiguous

P₁V₁ = P₂V₂

P2 equals 757.2 torr x 81.4 mL x 132.5 mL.

P2 times 132.5 mL = 61702.08 torr * mL

61702.08 torr = P₂ * 132.5

P2 = 132.5 mL / 61702.08 torr

P₂ ≈ 465.69 torr

as a result, the gas's pressure

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A nitrogen atom in N2O3 has an oxidation number of +3.

The unknown nitrogen oxidation number can be given a variable (x) to ascertain its oxidation number. Since oxygen has an oxidation number of - 2 and there are three oxygen particles in N₂O₃, the complete negative charge from oxygen is (- 2) × 3 = - 6.

The total charge of a compound is equal to the sum of its oxidation numbers. Since the compound in question is neutral, the sum of the oxidation numbers must be zero in this instance.

2(N) + 3(O) = 0

2x + (-6) = 0

2x = 6

x = 3

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The solubility of silver chromate in 1.10 M potassium chromate aqueous solution is 4.76 × 10^(-8) mol/L. In 1.10 M silver nitrate aqueous solution, the solubility of silver chromate is 1.46 × 10^(-4) mol/L. In pure water, the solubility of silver chromate is 1.06 × 10^(-6) mol/L.

The solubility of a sparingly soluble compound can be determined using the equilibrium expression, Ksp, which represents the product of the concentration of its constituent ions at equilibrium. In this case, the Ksp of Ag2CrO4 is given as 1.12 × 10^(-12), indicating its low solubility.

To calculate the solubility of silver chromate in each solution, the common ion effect must be considered. In the presence of potassium chromate, the concentration of chromate ions increases, affecting the solubility of silver chromate. Similarly, in the presence of silver nitrate, the concentration of silver ions increases.

Using the Ksp expression and the given concentrations, the solubility of silver chromate can be calculated. The solubility is highest in 1.10 M silver nitrate solution due to the increased concentration of silver ions. The solubility is lower in the presence of potassium chromate, and lowest in pure water where no additional ions are present.

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Answer:

oxygen level reduces

Explanation:

because oxygen supports burning

Answer:

C.164.1g/mol

Explanation:

40+14×2+16×6

164

The molar mass of Ca(NO3)2 is 164.1 g/mol.

Calcium nitrate, also called Norgessalpeter (Norwegian salpeter), is an inorganic compound with the formula Ca(NO3)2(H2O)x. The anhydrous compound, which is rarely encountered, absorbs moisture from the air to give the tetrahydrate. Both anhydrous and hydrated forms are colourless salts. Calcium nitrate is mainly used as a component in fertilizers, but it has other applications. Nitrocalcite is the name for a mineral which is a hydrated calcium nitrate that forms as an efflorescence where manure contacts concrete or limestone in a dry environment as in stables or caverns. A variety of related salts are known including calcium ammonium nitrate decahydrate and calcium potassium nitrate decahydrate.

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The event which was a major source of atmospheric oxygen is photosynthesis.

Green plants and other organisms use solar energy to generate nutrition from carbon dioxide and water. Plants need the green pigment chlorophyll to perform photosynthesis, which produces oxygen as a by-product.

Hence photosynthesis is the major source.

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Answer:

A bee sting has a ph of 5, and is therefore an acid. Litmus paper goes red (or stays red) in acidic solutions.

Answer:

The Blue Litmus Paper should turn red

Explanation:

Bee venom has a pH of 5.5, which means it is mildly acidic which in turn should make the Litmus paper turn Red. Hope this helps!

Answer:

Shenzi

Banzai

Ed

Scar

Simba

Timon

Pumbaa

Explanation:

they don't make their own food but get it from other organisims

Answer:

shuuuuuuuuuuuuuuuuuuuuuuush

Explanation:

shush suuush shuuush

Greenwashing is the practice of companies making themselves or their products appear to be organic, environmentally friendly, or supportive of free trade when in fact they are not.

Greenwashing is a marketing tactic that is used to appeal to environmentally conscious consumers, and it can involve everything from misleading labeling to false advertising claims.

The goal of greenwashing is to make a company appear more ethical or responsible than it actually is, in order to increase sales or improve its reputation.

However, this practice can be harmful to both consumers and the environment, as it can lead to confusion, misinformation, and the proliferation of unsustainable products and practices.

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Answer:

Electrovalent / Ionic bond

Explanation:

Hope it helps!!

Answer:

organisms cannot stay with out getting nutrients as they will not be able to repair them selves or produce energy.

Explanation: