Elements on the periodic table are arranged?

To determine the tomato's velocity when it hits the ground, we need more information. Specifically, we need the height from which the tomato was dropped and the tomato mass.

Without these details, it is impossible to calculate velocity accurately. The velocity of an object when it hits the ground depends on factors such as the height of the fall, the mass of the object, and any forces acting on it during the fall (such as air resistance).

If you can provide the necessary information, I can help you calculate the velocity of the tomato when it hits the ground.

Answer:

hope this helps

Explanation:

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Answer:

Answer:

Keq= [(Cl2) (H2)] / (HCl)^2

Explanation:

Equilibrium Constant, Keq, is written as products/reactants.

So it's going to be Keq= [(Cl2) (H2)] / (HCl)^2

Answer:

a, c, d

Explanation:

biosphere atmosphere hydrosphere lithosphere

The atomic mass of sulfur trioxide (SO3) is 82 amu.

Sulfur trioxide (SO3) has one sulfur atom and three oxygen atoms.

The atomic mass of sulfur can be calculated by subtracting the total mass of the oxygen atoms in sulfuric acid (3 x 16 amu) from the mass of sulfuric acid (98 amu) and then subtracting the mass of the remaining oxygen atom:

The atomic mass of sulfur is 34 amu.

To find the atomic mass of sulfur trioxide, we add the atomic masses of one sulfur atom and three oxygen atoms:

Therefore, the atomic mass of sulfur trioxide (SO3) is 82 amu.

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Answer:2.62 L

Explanation:

A sample of gas occupies a volume of 2.62 liters at 25° C and 1.00 atm. and the volume at 50° C and 2 atm then volume is 2.62 liters.

The equation of state for a fictitious perfect gas is known as the ideal gas law, sometimes known as the generic gas equation. Although it has significant drawbacks, it is a decent approximation of the behavior of many gases under various situations.

An ideal gas is one in which there are no intermolecular attraction forces and all collisions between atoms or molecules are entirely elastic. It may be seen as a group of perfectly hard spheres that collide but do not else interact with one another.

By using ideal gas equation,

P₁ V ₁ ÷ T = P₂V₂ ÷ T

1 × 2.62 ÷ 25 = 2 × V₂ ÷ 50

V₂ = 1 × 2.62 × 50 ÷ 25 × 2

V₂ = 2.62 liters.

Thus, a sample of gas occupies a volume of 2.62 liters at 25° C and 1.00 atm. and the volume at 50° C and 2 atm then volume is 2.62 liters.

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The correct answer is "C.

The type of exercise that Mei is doing is the "Machine exercise."

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Answer:

250 J kg^-1K^-1

Explanation:

use the formula

\(S = \frac{Q}{m(T_{1}-T_{2}) }\)

here S = Specific heat capacity

Q = heat energy = 500J

m = mass in kg = 50X10^-3 kg

T1 - T2 = Temperature difference = 40

The electrical energy can be transformed when we switch on the electrical bulb is light and heat energy. The correct option is B.

Electrical energy is the energy produced when electrons move from one point to another in a tube. The movement is of charged particles. They conduct electricity and constitute a current.

In electrical energy, heat energy is transformed into light energy. This happens because the rods of wire become red-hot and heat is produced.

Thus, the correct option is B. light and heat energy.

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The question is incomplete. Your most probably complete question is given below:

A, sound energy

B, light and heat energy

C. Light and sound energy

D. Chemical and sound energy

The partial charges on each fluorine atom are negative. Option B) The central O atom is the correct answer. Option B

The partial charges in a molecule are determined by the electronegativity values of the atoms involved. Electronegativity is the ability of an atom to attract electrons towards itself in a chemical bond. In the case of \(F_2O\), fluorine (F) is more electronegative than oxygen.

Fluorine is the most electronegative element on the periodic table, meaning it has a high ability to attract electrons. Oxygen is also relatively electronegative but less so than fluorine. When fluorine atoms bond with oxygen, the shared electrons will be pulled more towards the fluorine atoms, creating a polar covalent bond.

In \(F_2O\), each fluorine atom will pull the shared electrons towards itself, resulting in a higher electron density around the fluorine atoms. This creates a region of partial negative charge around the fluorine atoms.

Conversely, the oxygen atom will have a region of lower electron density and, therefore, a partial positive charge. This is because the shared electrons spend more time around the fluorine atoms due to their higher electronegativity.

Option B

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A  substance can dissolve in another when they have thee same type of intermolecular interaction.

The term solubility of a solute refers to the extent to which a solute dissolve in a solvent. We must know that a substance can dissolve in another when they have thee same type of intermolecular interaction.

Thus;

a) Octane (C8H18) mixes well with CCl4 because they are both non polar substances.

b) Methanol (CH3OH) is mixed with water in all ratios because the both are polar substances.

c) NaBr dissolves very poorly in acetone (CH3 ― CO ― CH3) because acetone is only slightly polar.

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Answer:

Using Phosphoric acid will work perfectly for producing Hydrogen halides because its not an Oxidizing agent. ...

Using an ionic chloride and Phosphoric acid

H3PO4 + NaCl ==> HCl + NaH2PO4

H3PO4 + NaI ==> HI + NaH2PO4

H2SO4 + NaCl ==> HCl + NaHSO4

This method(Using H2So4) will work for all hydrogen hydrogen halide except Hydrogen Iodide and Hydrogen Bromide.

The Sulphuric acid won't be useful for producing Hydrogen Iodide because its an OXIDIZING AGENT. Whist producing the Hydrogen Iodide... Some of the Iodide ions are oxidized to Iodine.

2I-² === I2 + 2e-

Explanation:

Answer:

28.83dm³

Explanation:

Using ideal gas equation

PV=nRT

P=2.80atm

n=2.30

R=0.082

T=155°C (155+273=428Kelvin)

V=nRT/P

V=2.30×0.082×428/2.80

V=28.83dm³

The mass (in grams) of lead that will plate out of the solution, given that 3.91 A is passed through the solution for 1.7 h is 25.66 g

First, we shall determine the charge flowing through the solution. This is shown below:

Q = It

Q = 3.91 × 6120

Q = 23929.2 C

Finally, we shall determine the mass of lead that will plate out of the solution. Details below:

Balanced equation

Pb²⁺ + 2e —> Pb

From the balanced equation above,

193000 C plated 207 g of lead

Therefore,

23929.2 C will plate = (23929.2 × 207) / 193000 = 25.66 g of lead

Thus, the mass of lead that  will plate out is 25.66 g

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Answer:

0.93L

Explanation:

Hello,

To solve this question, we need to first of all write down the equation of reaction.

Equation of reaction,

2Mg + 4HCl → 2MgCl₂ + 2H₂

From the equation of reaction, it shows that 2 moles of Mg produces 2 moles of H₂.

Number of moles = mass / molar mass

Mass = number of moles × molar mass

Molar mass of Mg = 24g/mol

Mass = 2 × 24 = 48g

Therefore, 48g of Mg produces (2 × 22.4)L of H₂

48g of Mg = 44.8L of H₂

1g of Mg = xL of H₂

x = (1 × 44.8) / 48

x = 0.93L

1g of Mg will produce 0.93L of H₂

Answer:

An azeotrope or a constant boiling point mixture is a mixture of two or more liquids whose...Such a system of solvents is known as a heteroazeotrope. ... that will affect the volatility of one of the azeotrope constituents more than another.

Explanation:

Azeotrope, in chemistry, a mixture of liquids that has a constant boiling point because the vapor has the same composition as the liquid mixture. The boiling point of an azeotropic mixture may be higher or lower than that of any of its components.

Answer:

Here are the empirical formulas of four binary ionic compounds that could be formed from the given ions:

- MgF2 (magnesium fluoride)

- Al2O3 (aluminum oxide)

- MgO (magnesium oxide)

- AlF3 (aluminum fluoride)

The empirical formula of an ionic compound gives the simplest whole-number ratio of the ions present in the compound. The formula is determined by balancing the charges of the cation and anion so that the compound as a whole is electrically neutral.

Explanation:

The empirical formula of a compound is the simplest whole-number ratio of the atoms in the compound. Binary ionic compounds are formed by the combination of a metal cation with a non-metal anion.

In this case, the given ions are Mg2+, Al3+, F−, and O2−. To form binary ionic compounds, we need one cation and one anion.

Here are some possible combinations of these ions, along with their empirical formulas:

- Mg2+ and F−: MgF2

- Al3+ and F−: AlF3

- Mg2+ and O2−: MgO

- Al3+ and O2−: Al2O3

In each case, the positive and negative charges of the ions balance to form a neutral compound. The empirical formula is found by writing the subscripts for each element in the simplest ratio that achieves this balance.

The pH of a solution that is 0.49 M in sodium borate and 0.39 M in boric acid is 9.359.

Generally, Sodium borate and boric acid mixture in a buffer solution follows the below way:

Salt = Sodium borate =0.37

\(\(\phi k_a\)=5.4 *10^{-10}$\(-\log k_a\\=-\log 5.4 *10^{-10}$\)p k a=9.26\(&\quad \\P H = P K \\a+\log \left|\frac{\text { Salt }}{\text { acid }}\right| \\\)\\because \(P H=9.26+\log \left|\frac{0.49}{0.39}\right| \\\\=9.359\)

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Answer:

6 mol CO2

Explanation:

According to the equation, 6 moles of O2 will produce 6 moles of CO2, so the ratio is 1:1

therefore 6 moles of O2 will produce 6 moles of CO2

The equation of the reaction leading to the formation of the precipitate is; \(PbCl_{2}(aq) + Na_{2} SO_{4} (aq) ---- > PbSO_{4}(s) + 2NaCl(aq)\)

We define a precipitate as a compound that can be formed as a solid when we mix two aqueous solutions. An aqueous solution is a solution of a substance that have been dissolved in water.

Thus, when we have a mixture of two liquid reactants and then one of the products does separate itself out of the solution then we say that a precipitate has been formed.

In this case, we are to write down the equation of the reaction between aqueous lead (ii) chloride reacts with aqueous sodium sulfate to produce a lead(ii) sulfate. The solid would separate out of the system and we can see the white color of the lead(ii) sulfate.

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Nuclear fission causes a neutron to split the isotope U-235 when it collides with its nucleus. When a slow neutron interacts with a heavy nuclide like 235U, nuclear fission can occur (0.025 eV).

When a slow neutron interacts with a heavy nuclide like 235U, nuclear fission can occur (0.025 eV). If a fission (or splitting apart) occurs, the nuclear material splits into two (on average) about equal fragments that travel away with kinetic energy, producing heat.

Nuclear fission causes a neutron to split the isotope U-235 when it collides with its nucleus. Two or three additional neutrons as well as fission products are released during this fission process. The chain reaction is continued by some of the emitted neutrons. There is significant energy released in every fission reaction.

When a uranium atom divides, additional neutrons are also released. The process keeps repeating again as these neutrons keep crashing into more uranium atoms. This process is called a nuclear chain reaction. This reaction is controlled in nuclear power plant reactors to produce a desired amount of heat.

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The number of moles of silver present in a silver spoon that has a mass of 12.86g is 0.12 moles.

The number of moles of a substance can be calculated by dividing the mass of the substance by its molar mass as follows:

The mass of a substance is the quantity of matter which a body contains, irrespective of its bulk or volume.

The mole of a substance is the amount of substance of a system which contains exactly 6.02214076 × 10²³ elementary entities e.g. atoms, molecules.

moles = mass ÷ molar mass

According to this question, silver spoon has a mass of 12.86g. The number of moles can be calculated as follows:

Molar mass of silver (Ag): 107.8682g/mol

moles = 12.86g ÷ 107.8682g/mol

moles = 0.12 moles

Therefore, 0.12 moles of silver are present in the silver spoon.

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- The phytoplankton that is dead become liquefied over time due to pressure, and oil deposits are formed.

- Fish produce oil as a waste product that eventually forms oil deposits.

Answer:

Hello, I was doing this and from my caluclations it should be :

Explanation:

3 Moles.

The three moles of MgCO3 are present in 252.939 grams of MgCO3.

So, option B is correct one .

The molar mass of substance is equal to mass of one mole of  that substance.

Example: Molar mass of MgCO3 is equal to mass of one mole of MgCO3.

Molar mass of Mg = 24.305 u

Molar mass of C = 12.011 u

Molar mass of O = 15.999 u

Molar mass of MgCO3 = Molar mass of Mg + Molar mass of C + Molar mass of O*3

Molar mass of MgCO3 = 24.305 + 12.011  +  15.999 * 3

Molar mass of MgCO3 = 84.3139 gram

Molar mass of  MgCO3 contain  84.3139 gram

So, 252.939 grams of MgCO3 = 252.939 grams/84.3139 gram

252.939 grams of MgCO3 = 2.999 moles

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The theoretical yield of Acetylsalicylic acid is found out to be: 3.01 grams.

The limiting reagent is a substance that prevents a chemical reaction from occurring completely.

When a limiting reagent is used in a chemical reaction, the atoms, molecules, or ions of the other reactant that it (the limiting reagent) reacts with will either stay free or unreacted.

Popular compounds called acids and bases interact with one another to create salt and water. The Latin word "acere," which meaning "sour," is where the term "acid" originates.

According to the problem, we have 2.31 grams of salicylic acid. We need to determine the theoretical yield of acetylsalicylic acid.

The molar mass of salicylic acid is 138.12 g/mol. Therefore, the number of moles of salicylic acid we have is:

n = mass / molar mass

n = 2.31 g / 138.12 g/mol

n = 0.0167 mol

According to the balanced equation, 1 mole of salicylic acid reacts with 1 mole of acetic anhydride to produce 1 mole of acetylsalicylic acid. Therefore, the number of moles of acetylsalicylic acid produced is also 0.0167 mol.

The molar mass of acetylsalicylic acid is 180.16 g/mol. Therefore, the theoretical yield of acetylsalicylic acid is:

mass = n x molar mass

mass = 0.0167 mol x 180.16 g/mol

mass = 3.01 g

Therefore, the theoretical yield of acetylsalicylic acid is 3.01 grams.

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Answer:

the protons are 98

and the neutrons are 153

you're welcome

but next time try to study harder.