gas is placed in a balloon with a volume of 3.0 l at 35oc and 800 torr. what would be the new volume for the gas if placed under stp?

The statement that is correct about the emission spectrum of hydrogen in the visible region is that the line corresponding to the greatest emission of energy is in the ultraviolet region.

Hydrogen spectrum is defined as the dissociation of hydrogen atom upon action of electric current into spectral lines that can be seen in that visible light.

These lines falls under the electromagnetic wave of ultraviolet and infrared regions. But the lines of greatest emission is found in the ultraviolet region.

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On the periodic table, first ionization energy generally increases as you move left to right across a period.

The ionisation energy measures an element's ability to participate in chemical processes that call for the creation of ions or the donation of electronsIt frequently has to do with the kind of chemical bonds that exist between the constituent parts of the compounds they produce.

The smallest amount of energy necessary to free the most loosely bound electron (or the valence electron) from an isolated neutral gaseous atom in order to create a cation is known as the ionisation energy (Ei or IE). X+ + e = X+ + energy

Ionization energy can be expressed mathematically as the electron's orbital energy with the opposite sign. The energy of ionisation is 2.18 x 10-18 J/atom, or 1312.3 KJ/mole.

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Answer:

cation

Explanation:

An atom with more protons than electrons is a cation. An atom with more electrons than protons is an anion.

Answer:

A Cation should be the correct answer.

Explanation:

It will become a positively charged ion, which is known as a cation. This is because it loses an electron, so it becomes positively charged.

The original volume of HBr that was titrated can be calculated as the ratio of the moles of HBr to its concentration.

To determine the original volume of HBr that was titrated, we can use the concept of stoichiometry and the equation balanced for the neutralization reaction between HBr and KOH.

The balanced equation is:

HBr + KOH → KBr + H₂O

From the balanced equation, we can see that the stoichiometric ratio between HBr and KOH is 1:1. This means that for every mole of HBr, we need an equal number of moles of KOH to complete neutralization.

First, let's determine the moles of KOH used in the titration:

Moles of KOH = 0.500 M × 0.075 L = 0.0375 mol

Since the stoichiometric ratio is 1:1, this also represents the number of moles of HBr that were neutralized.

Now, we can calculate the original volume of HBr using the concentration of the unknown solution:

Moles of HBr = 0.0375 mol

Concentration of HBr = unknown (let's assume it is C mol/L)

Volume of HBr = Moles of HBr / Concentration of HBr = 0.0375 mol / C mol/L

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The correct option is C, The substance that will dissolve in water to produce an acidic solution is \(nac_2h_3o_2\), also known as sodium acetate.

An acidic solution is a type of solution in chemistry that has a high concentration of hydrogen ions (H+) relative to hydroxide ions (OH-). In an acidic solution, the pH level is less than 7 on a scale of 0-14, with 0 being the most acidic and 14 being the most basic. Acids are substances that donate hydrogen ions to a solution, which can then react with other substances to form chemical bonds.

Acidic solutions have several distinct properties, including a sour taste, the ability to react with metals to produce hydrogen gas, and the ability to turn litmus paper red. Strong acids, such as hydrochloric acid (HCl) and sulfuric acid (\(H_2SO_4\)), can be highly corrosive and can cause burns and other injuries if handled improperly.

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Answer: i Choose the sun

because it has mass

Explanation: matter is anything that has mass and occupies space / Volume

and the sun has mass though it is not a solid one, and is made up of matter

HOPE THIS HELPSS!!!!

Here's link to the answer:

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Answer:

4.9 L O₂

General Formulas and Concepts:

Atomic Structure

Stoichiometry

Explanation:

Step 1: Define

Identify variables

[Given] 6.4 g O₂ at STP

[Solve] L O₂

Step 2: Identify Conversions

[STP] 1 mol = 22.4 L

[PT] Molar Mass of O: 16.00 g/mol

Molar Mass of O₂: 2(16.00) = 32.00 g/mol

Step 3: Convert

Step 4: Check

Follow sig fig rules and round. We are given 2 sig figs.

4.48 L O₂ ≈ 4.9 L O₂

Answer:

1.78 g/L

Explanation:

The solvent is said to be saturated when it has dissolved all the solute it can at a particular temperature.

The relationship between solvents and solutes is an important one in the study of chemistry. In order to understand the dynamics of this relationship, it is important to understand the concept of saturation. When a solvent has dissolved all the solute it can at a particular temperature, it is said to be saturated. In this essay, the significance of saturation in solvent-solute interactions will be discussed in detail.

At the most basic level, saturation is important because it helps to inform chemists of the maximum amount of solute that can be dissolved in a solvent at any given temperature. This information can be used to control the concentration of a solution and to ensure that it is within the desired range for a particular application.

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a. Consistency is a term that matches the description: The agreement between several measurements of the same quantity.

b. Density matches the description: Ratio between the mass and volume of a substance.

c. Outlier matches the description: In a series of measurements of the same quantity, one that is significantly different from the others.

d. Mean matches the description: Mathematical value reported when a quantity is measured multiple times.e. Immiscible is a term describing two liquids that do not mix together.

Definition: Immiscibility is the property of not being miscible. When two or more liquids are not able to form a homogeneous solution when combined, they are immiscible. The term "miscible" refers to the property of being mixed. Therefore, immiscible liquids cannot be mixed together or dissolved in one another.

Limiting reagent (also known as limiting reactant) is a chemical reaction term that refers to the substance that limits the quantity of product that can be formed in a chemical reaction. It is the substance that is entirely consumed first, preventing the other reactants from reacting further. The amount of product generated is determined by the quantity of the limiting reagent. In a chemical reaction, the quantity of the product produced is determined by the limiting reactant, and the rest of the excess reagents will remain unchanged.

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The first thing we need to do is calculate the molar mass of PbS. They give us the atomic weights of lead (P) and sulfur (S), the molecular weight will be equal to the sum of the atomic weights multiplied by the atoms of each element, as follows:

Now, to calculate the number of moles we use its molecular mass and apply the following equation:

In 458g of PbS there are 1.9 mol PbS

Chlorine contains a total of 17 electrons which are filled in different orbitals of which 7 electrons are located in the outermost energy level or orbital.

In an atom, the electrons are surrounding the nucleus through fixed paths or energy levels called orbitals.  Electrons are filled in the increasing order of energy level. Thus lower energy levels are filled first.

The last electrons are filled in the outermost energy levels and are called valence electrons.  Each shell have a definite capacity for electrons.

Cl is 17the element in periodic table and has 17 electrons of which 7 electrons are located in the outermost shell. Hence, option A is correct.

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Answer:

You can easily determine the number of valence electrons an atom can have by looking at its Group in the periodic table. For example, atoms in Groups 1 and 2 have 1 and 2 valence electrons, respectively. Atoms in Groups 13 and 18 have 3 and 8 valence electrons, respectively.

To solve this problem, let's use the definition for molarity:

Replacing the values of the problem:

Now, to find the mass, we multiply by the molecular weight of NaCl. (Which is about 58.44g/mol)

The answer is approximately 22.2g of NaCl

Answer:

89-91=1 the answer is 1molar mass

I think it is newtons but not that sure

Answer:

Gravity

Explanation:

I remembered from quizlet.

Answer:

Molybdenum is M, Einsteinium is E, and N is Nitrogen. Lastly, S is sulfur.

Phenolphtalein is chosen because it changes color in a pH range between 8.3 - 10. It will appear pink in basic solutions and clear in acidic solutions.

A titration is a method where the concentration of an unknown solution is ascertained by comparing it to a solution of known concentration. The analyte (the unknown solution) is typically added in a known amount to the titrant (the known solution) from a buret until the reaction is finished.

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The net ionic equation for the reactions is;

1)4Mn^3+(aq) + 3PO4^- (aq)---->Mn3(PO4)4

2)Pd^2+(aq) + S^2-(aq) ----> PdS(s)

A net ionic equation is a chemical equation that shows only the chemical species that are directly involved in a chemical reaction, excluding the spectator ions. Spectator ions are ions that appear on both sides of the equation and do not take part in the reaction.

The net ionic equation is useful in determining the actual chemical change that occurs during a reaction and helps simplify the equation by removing the spectator ions.

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The number of grams of iron that contain the same number of atoms as 2.24 g of cobalt is 2.122 g. The mole concept is used here to obtain the mass of iron.

The term mole is known as the quantity of a substance which contains the same number of elementary particles as the number of atoms in 12 g of carbon-12 isotope.

The number of moles of a substance can be calculated as:

Number of moles = Mass of the substance ÷ Molar mass

Here the mass of cobalt is 2.24 g and the molar mass of cobalt is 58.93 g/mol.

Then the number of moles of cobalt in 2.24 g is:

2.24 g ÷ 58.93 g/mol = 0.038 mol

According to the question iron contains same number of atoms as cobalt. Thus, iron has the same number of moles.

The molar mass of iron is 55.85 g/mol. The mass of a substance can be calculated from the number of moles and molar mass by the equation:

Mass = Number of moles × Molar mass

The mass of iron is:

0.038 mol × 55.85 g/mol = 2.122 g

Thus the mass of iron is 2.122 g.

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Protons (H⁺) are pumped across the inner mitochondrial membrane as part of the process called electron transport chain, which is an essential step in cellular respiration.

The electron transport chain is responsible for generating adenosine triphosphate (ATP), the main energy currency of cells.

During cellular respiration, electrons are transferred from high-energy molecules (such as glucose) through a series of electron carriers embedded in the inner mitochondrial membrane. As electrons pass through the electron transport chain, energy is released and used to pump protons (H⁺) from the mitochondrial matrix to the intermembrane space.

There are some several reasons;

Establishing an Electrochemical Gradient; The pumping of protons across the inner mitochondrial membrane creates an imbalance of protons, resulting in a higher concentration of protons in the intermembrane space compared to the matrix.

Generation of ATP; The electrochemical gradient created by the proton pumping is utilized by ATP synthase, an enzyme complex embedded in the inner mitochondrial membrane.

Coupling Electron Transport with Proton Pumping; The pumping of protons across the inner mitochondrial membrane is coupled with the flow of electrons through the electron transport chain.

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The volume of the rectangular bar is  the product of its dimensions that is  110 cm³. Then density of the bar weighing 121 g is 1.1 g/ cm³.

Density of a substance is the measure of its mass per unit volume. It describes how closely its particles are packed within a given volume. It is the ratio of mass to the volume.

Volume of an object is the space occupied by the object. For a rectangle block, volume is the product of length, width and height.

Given, l = 8 cm

width = 5.5 cm

height h = 2.5 cm

volume =  l w h = 8 cm ×5.5 cm × 2.5 cm  = 110 cm³

Mass of the bar = 121 g

density = mass/ volume

d = 121 g/110 cm³

  = 1.1g/cm³

Therefore, the density of rectangular bar is 1.1 g/cm³.

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Answer:

Percent mass of oreo = 35.11%

Explanation:

Given:

Mass of oreo =  17.1

Mass of 1st cookie = 16.2

Mass of 3rd cookie = 15.4

Find:

Percent mass of oreo

Computation:

Total mass = Mass of oreo + Mass of 1st cookie + Mass of 3rd cookie

Total mass = 17.1 + 16.2 + 15.4

Total mass = 48.7

Percent mass of oreo = [Mass of oreo/Total mass]100

Percent mass of oreo = [17.1 / 48.7]100

Percent mass of oreo = 35.11%

Answer:

The answer to your question is ∆Hrxm= – 23.9 kJ

Answer:

0.6258 g

Explanation:

To determine the number grams of aluminum in the above reaction;

Moles of HCl

35 mL of 2.0 M HCl

2 moles of HCl is contained in 1000 mL

x moles of HCl is contained in 35 mL

\(x \: mol \: = \: \frac{2 \: \times \: 35}{1000} \\ = 0.07 \: moles \: \)

We have 0.07 moles of HCl.

Mole ratio

6HCl(aq) + 2Al(s) --> 2AlCl3(aq) + 3H2(g)

Hence mole ratio = 6 : 2 (HCl : Al

\( = \frac{2}{6} \times 0.07 \\ \: = 0.0233333 \: moles\)

Therefore we have 0.0233333 moles of aluminum.

Grams of Aluminum

We use the formula;

\(grams \: = moles \: \times \: rfm\)

The RFM (Relative formula mass) of aluminum is 26.982g/mol.

Substitute values into the formula;

\( = 0.0233333 \: moles \: \times \: 26.982 \: \frac{g}{mol} \\ = 0.625799 \: grams\)

The number of grams of aluminum required to react with HCl is 0.6258 g.