if the reactants of a reaction have ab initial mass of 25 grams what is the mass of the product?

Answer:

has the dimensions 2.3m x 1.2m x 0.46m. Using this information, calculate a) the density of the ranch dressing, b) the mass of ranch dressing needed to fill the tub

The Lone pairs present in trigonal bipyramidal electron pair geometry always occupies equatorial position.

In the trigonal bipyramidal electron pair geometry, the electrons which do not forms Bond with any other atom are called lone pair of electron.

These lone pair of electrons generally goes to the equatorial position of the geometry.

They do so because the equatorial geometry provides them the maximum stability as we know that The Lone pair-lone pair repulsion is more than the bond-pair Bond pair repulsion.

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Answer:

alpha particles

Explanation:

alpha particles the least penetrating but potentially most damaging and gamma rays the most penetrating. A beta particle, also called beta ray or beta radiation, is a high-energy, high-speed electron or positron emitted by the radioactive decay of an atomic nucleus during the process of beta decay.

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Soil 1 is the answer

Answer:

Explanation:

When workers stop working entirely, it is called either a strike or retirement, depending on the circumstances under which it is done.  A strike is a mass refusal of employees to work, because they are not satisfied.  

Retirement on the other hand happens when the employee reaches certain age, after which he/she can leave the job and get a pension,.

Answer

The freezing point o the solution = 273.714153 K

The boiling point of the solution= 373.1955328 K

Explanation

Given:

Mass of glucose = 5.00 g

Volume of water = 72.8 g

What to find:

The freezing point and the boiling point of the solution.

Step-by-step solution:

Note: (Freezing point of water = 273K, Kf for water =1.87K kg/mol, atomic weight C = 12, H = 1, O = 16).

The freezing point of the solution:

The molecular weight of glucose C6H12O6 = 6(12) + 12(1) + 6(16) = 180 g/mol

The number of moles of glucose = (Mass of glucose/Molecular weight) = 5.00 g/180.0 g/mol = 0.0278 moles

Mass of water = 72.8 g = 0.0728 kg

So molality of glucose = (Moles o glcsose/Volume of solution) = 0.0278 mol/0.0728 kg = 0.3819 mol/kg

The depression in the freezing point, ∆T = Kf x molality = 1.87 K kg/mol x 0.3819 mol/kg = 0.714153 K

Since the freezing point of water = 273 K

Therefore, the freezing point of the solution= 273 K + 0.714153 K = 273.714153K

The boiling point of the solution:

∆T = i x m x Kb

∆T = change in temperature i.e boiling point elevation

i = van't Hoff factor = 1 for glucose since it does not ionize or dissociate. It is a single particle.

m = molality = moles solut/kg solvent = 0.0278 mol/0.0728 kg = 0.3819 mol/kg

Kb = boiling poin constant = 0.512 K kg/mol

∆T = 1 x 0.3819 mol/kg x 0.512 K kg/mol

∆T = 0.1955328 K

Since the freezing point of water = 373 K

Therefore, the boiling point of the solution = 373 K + 0.1955328 K = 373.1955328 K

"The inert gases are obtained by fractional distillation of air, with the exception of helium which is separated from a few natural gas sources rich in this element, through cryogenic distillation or membrane separation. For specialized applications, purified inert gas shall be produced by specialized generators on-site. They are often used by chemical tankers and product carriers (smaller not a big as well as the tendency of inert gases vesselshtop specialized generators are also available for laboratories."

The third quantum number (m) for the 2p^3 electron in phosphorus can take the values -1, 0, or +1. None of the options provided (a. m = 3, b. m = -2, c. m = 2, d. m = -1) accurately represent the possible value for the third quantum number.

To determine the third quantum number (m) of a 2p^3 electron in phosphorus, we refer to the electron configuration representation:

1s^22s^22p^63s^23p^3

In the 2p subshell, there are three orbitals available: px, py, and pz. Each orbital can hold a maximum of two electrons due to the Pauli exclusion principle.

The third quantum number (m) represents the magnetic quantum number, which describes the orientation of an orbital in space. For a given p orbital, the possible values of m are -1, 0, and +1. The m values represent the different orientations of the px, py, and pz orbitals along the x, y, and z axes, respectively.

Since the 2p subshell has three electrons, one electron will occupy each of the three available p orbitals. Thus, we have one electron in the px orbital, one in the py orbital, and one in the pz orbital.

Therefore, the third quantum number (m) for the 2p^3 electron in phosphorus can take the values -1, 0, or +1. None of the options provided (a. m = 3, b. m = -2, c. m = 2, d. m = -1) accurately represent the possible value for the third quantum number.

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Answer:

Explanation:

The momentum of an object can be found by using the formula

momentum = mass × velocity

From the question we have

momentum = 0.00001346 * 790204000

= 10636.14584

We have the final answer as

Hope this helps you

The % V/V concentration of a 180-mL disinfectant solution containing 85 mL of isopropyl alcohol is 47 % V/V.

It refers to the milliliters of solute for every 100 milliliters of solution.

We have 180 mL of a disinfectant solution that contains 85 mL of isopropyl alcohol (solute).

The % V/V concentration of this solution is:

% V/V = (mL solute/mL solution) × 100% =

% V/V = (85 mL/180 mL) × 100% = 47% V/V

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Based on the stoichiometry of the reaction, If the mass of sodium azide used was far greater than 1424 g, the volume of nitrogen gas produced will be far greater than 736 L.

However, If the mass of sodium azide used was far less than 1424 g, the volume of nitrogen gas produced will be far less than 736 L.

Sodium azide is the chemical found in automobile airbags.

Automotive air bags inflate when an electrical charge triggered by automobile impact causes sodium azide, NaN3, to rapidly decompose to its component elements, nitrogen gas and sodium

The equation of the reaction is given below:

According to the equation of reaction, 2 moles of sodium azide produces 3 moles of nitrogen gas.

1 mole of Nitrogen gas has a volume of 22.4 L

Molar mass of sodium azide is 65 g

Moles of sodium azide in 1424 g = 1424/65 = 21.9077 moles

21.9077 moles of sodium azide will produce 21.9077 * 3/2 moles of nitrogen gas = 32.86 moles of nitrogen gas

32.86 moles of nitrogen gas will occupy a volume of 32.86 * 22.4 = 736 L

If the mass of sodium azide used was far greater than 1424 g, the volume of nitrogen gas produced will be far greater than 736 L.

If the mass of sodium azide used was far less than 1424 g, the volume of nitrogen gas produced will be far less than 736 L.

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Between A and B

The highest probability is that A and B are solids and they are forming liquid or gases.

Between A and C

Highest probability is that A and C are gases and they are turning into liquid or solid

The solubility of a gas in a liquid is influenced by the pressure of the gas above the liquid surface. In the case of the bubbling that occurs while opening a can of soda is due to  solubility of carbon dioxide.

Increasing the pressure of the gas above the liquid surface increases the solubility of the gas in the liquid. This is known as Henry's law, which states that the solubility of a gas in a liquid is proportional to the pressure of the gas above the liquid.

Regarding the bubbling that occurs upon opening a can of soda, when a can of soda is opened, the pressure inside the can decreases. As a result, the solubility of the carbon dioxide gas dissolved in the liquid decreases and the gas comes out of solution and forms bubbles. These bubbles rise to the surface, leading to the release of carbon dioxide gas and the characteristic fizzing sound.

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Answer:

2.8 moles

Explanation:

Data obtained from the question include:

Percentage composition of N2 in air = 78%

Molar mass of N2 = 28g/mol

Mass of air = 100g

Number of mole of N2 =..?

Next, we shall determine the mass of N2 in air. This can be obtain as follow:

Mass composition of N2 in air = 78% of 100

= 78/100 x 100 = 78g

Therefore, the mass of the N2 in air is 78g

Finally, we shall determine the number of mole of N2 as follow:

Molar mass of N2 = 28g/mol

Mass of N2 = 78g

Number of mole of N2 =.?

Mole = mass /Molar mass

Number of mole of N2 = 78/28

Number of mole of N2 = 2.8 moles.

Therefore, 100g of air contains 2.8 moles of N2

Answer:

A. 2.8

Explanation:

Answer:

A mineral has to be naturally occurring, inorganic, solid, have a crystal structure, and have a definite chemical composition.

Explanation:

Answer:

Number of neutrons in the nucleus.

Explanation:

Mass number is protons plus neutrons. Protons do not change from isotope to isotope

Answer:

Aluminum :)

Explanation:

Answer:

Explanation:

Rocco is making bonds when he prepares these compounds. Two pieces of evidence for this are:

The chemical reactions are written with an arrow pointing to the right, indicating that the reactants are being converted into products.

The reactions release heat, which is a sign of a chemical reaction occurring and bonds forming.

The bond type in these compounds is an ionic bond. Two pieces of evidence for this are:

The reactants in the chemical reactions consist of a metal (Li or Mg) and a nonmetal (Cl or Br), which are the types of elements that typically form ionic bonds.

The products of the reactions are compounds with a metal and a nonmetal, which also suggests an ionic bond.

The oxidation numbers of lithium and magnesium are +1 and +2 respectively. The oxidation number of chlorine and bromine are -1. Since the oxidation number of lithium is lower than the oxidation number of magnesium, lithium will lose an electron more easily than magnesium. So the reaction of lithium and chlorine is more favorable than magnesium and bromine. That's why Rocco is only getting half as much magnesium compound than lithium compound when preparing these chemicals. To increase his yield, Rocco can try to use a higher amount of magnesium or a lower amount of bromine in the reaction.

Answer:

Fear weakens our immune system and can cause cardiovascular damage. Fear can cause damage to some parts of our brains. Fear can interrupt processes in our brains that allow us to regulate emotions.

Explanation:

Hope this helps:)........if not then sorry for wasting your time and may God bless you:)

Answer:

which shows both behaviour of metals and non metals

please come fast

Explanation:

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Answer:

The element which shows the property of both metal and nonmetal is called metalloids

Explanation:

examples of metalloids are silicon boron germanium etc

To calculate enthalpy change from Gibbs free energy, you can use the following equation:

    ΔH = ΔG + TΔS

Gibbs free energy is a thermodynamic property that is used to determine the amount of energy available to do work in a system. It is denoted by the symbol G and is defined as the difference between the enthalpy (H) and the product of the temperature (T) and entropy (S)

Gibbs free energy is a useful tool for predicting the direction of a chemical reaction and the spontaneity of a process. If the Gibbs free energy of a reaction is negative, the reaction is spontaneous and will proceed in the forward direction. If the Gibbs free energy of a reaction is positive, the reaction is non-spontaneous and will not proceed in the forward direction without the input of energy. If the Gibbs free energy of a reaction is zero, the reaction is at equilibrium and there is no net change in the system.

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Answer:

A.) 0.43 g

Explanation:

Before you can calculate the mass, you need to find the moles. You can do this by using Avogadro's Law:

V₁ / n₁ = V₂ / n₂

In this equation, "V₁" and "n₁" represent the first balloon's volume and mole value. "V₂" and "n₂" represent the second balloon's volume and mole value. Since you are searching for the first balloon's mole value, you can plug the other values into the equation and simplify to find n₁.

V₁ = 1.54 L                         V₂ = 0.72 L

n₁ = ? moles                      n₂ = 0.100 moles

V₁ / n₁ = V₂ / n₂                                               <----- Avogadro's Law

1.54 L / n₁ = 0.72 L / 0.100 moles                 <----- Insert values

1.54 L / n₁ = 7.2                                              <----- Simplify right side

1.54 L = 7.2 x n₁                                              <----- Multiply both sides by n₁

0.214 = n₁                                                       <----- Divide both sides by 7.2

Now, you can find the mass using the molar mass of the gas. Remember, hydrogen exists as a diatomic molecule.

Atomic Mass (H₂): 2(1.008 g/mol)

Molar Mass (H₂): 2.016 g/mol

0.214 moles He            2.016 g
--------------------------  x  -----------------  =  0.43 g H₂
                                       1 mole

Answer:

The volume of 9.0 M copper (II) sulfate stock solution needed to prepare 3.0 L of a 5.0 M solution is 1.667 L

Explanation:

Dilution is a process by which the concentration of a solute in solution is reduced by adding more solvent.

In other words, dilution is the procedure followed to prepare a less concentrated solution from a more concentrated one, and it simply consists of adding more solvent.

In a dilution the amount of solute does not vary. What varies in a dilution is the volume of the solvent: as more solvent is added, the concentration of the solute decreases, as the volume (and weight) of the solution increases.

The equation used in this case is:

Ci * Vi = Cf * Vf

where

Ci: initial concentration

Vi: initial volume

Cf: final concentration

Vf: final volume

In this case:

Ci: 9 M

Vi: ?

Cf: 5 M

Vf: 3 L

Answer:

Make Recycle Bins Easily Accessible

Ditch Single-Use Waste

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Designate a Drawer for Scrap Paper

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Carbohydrates and lipids are both composed of carbon, hydrogen, and oxygen, however lipids contain less oxygen.

Briefing:

Carbon, hydrogen, and oxygen make up the three macromolecules that make up carbohydrates in the ratios of 1:2:1.

Depending on how many monomers make up a biomolecule, carbohydrates can be classified as monosaccharides, disaccharides, or polysaccharides.

Although O makes up a smaller portion of lipids than it does of carbs, all three elements are present.

As a result, the C:H:O ratio in lipids is 1:2:less than one (1).

There are two categories of lipids: nonsaponifiable lipids (which lack fatty acids) and saponifiable lipids (contain fatty acids).

In conclusion, lipids and carbohydrates both contain the elements C, H, and O, albeit lipids have somewhat less O.

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Answer:

d. The electron-pair geometry is tetrahedral, the molecular geometry is tetrahedral.

Explanation:

According to Valence Shell Electron Pair Repulsion Theory, the shape of a molecule depends on the number of electrons pairs surrounding the valence shell of the central atom in the molecule.

In CH3Cl, the central atom is carbon. Carbon has four regions of electron density surrounding it and no lone pairs. Lone pairs cause molecules to deviate from the expected geometry.

Since CH3Cl has no lone pairs on the carbon central atom, both the molecular and electron pair geometries are tetrahedral.

In CH₃Cl, the electron-pair geometry is trigonal-planar, and the molecular geometry is bent. Therefore, option C is correct.

According to VSEPR (Valence Shell Electron Pair Repulsion) theory, the electron pairs around the central atom in CH₃Cl will arrange themselves to minimize repulsion, resulting in a specific geometry.

In CH₃Cl, the central atom is carbon (C), and it is surrounded by three hydrogen atoms (H) and one chlorine atom (Cl).

The electron-pair geometry is determined by the arrangement of these electron pairs.

Molecular geometry considers only the atoms around the central atom, not the lone pairs.

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The theoretical yield of the Al2O3 that we have in this reaction is 102 g.

The theoretical yield is the maximum amount of product that can be produced in a chemical reaction, based on the limiting reactant and assuming complete conversion of all reactants to products.

We know that;

Number of moles of Al = 54 g/27 g/mol = 2 moles

4 moles of Al makes 2 moles of Al2O3

2 moles of Al will make 2 * 2 /4

1 mole of Al2O3

Theoretical yield = 1 mole * 102 g/mol

=102 g

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The volume that is occupied by the gas is obtained as  56 L.

We know that from the Avogadro's law, the volume that can be occupied by one mole of a gas is obtained as 22.4 L. This implies that we have to find the number of moles in the 70 g of the CO and then obtain the corresponding volume by simple proportion.

Number of moles of CO = 70.0 g/28 g/mol

= 2.5 moles

If 1 mole of the gas occupies 22.4 L

2.5 moles of the gas occupies 2.5 * 22.4/1 mole

= 56 L

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There are 50 bananas total in the enormous bunch of bananas.

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