Which of the following pairs correctly represents A and B in the image above?A – solvent and B – solute
A – solute and B – solvent
A – solute and B – solution
A – solvent and B – solution

Answers

Answer 1

Answer:

A is marking the solvent molecules which is marked in blue. And B is marking the whole solution.

Option C

Explanation:

A solution is defined as the homogeneous mixture of a solute in a solvent in a range of concentration where generally solvent is more in amount than in solution.

A solute is the component of the solution which is generally less in amount and is homogenously mixed with the solution. Here they are marked in blue. And the molecules that are representing the solvent are marked in orange colour. The solute and the solvent total makes the solution which is marked by B.

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How do i describe how a constant volume calorimeter can be used to measure the heat transferred from a burning piece of coal to cool water.

Answers

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What is the gram-formula mass of Fe(NO3)3?(1) 146 g/mol (3) 214 g/mol

(2) 194 g/mol (4) 242 g/mol

Answers

The gram-formula mass of Fe(NO₃)₃ is 242 g/mol. Therefore, option D is correct.

Gram-formula mass is also known as the molar mass. It refers to the mass of one mole of a substance. It is expressed in units of grams per mole (g/mol) and is commonly used in chemistry to relate the amount of a substance to its mass.

The atomic mass of Iron= 56 amu.

The atomic mass of Nitrogen = 14 amu.

The atomic mass of Oxygen = 16 amu.

Gram-formula mass of Fe(NO₃)₃ = (Atomic mass of Fe) + 3 × {(Atomic mass of N × 1) + (Atomic mass of O × 3)}

= 56 + 3 × (14 × 1 + 16 ×3)

= 56 + 3 × (14 + 48)

= 56 + 3 × 62

= 56 + 186

= 242 g/mol

Therefore, the gram-formula mass of Fe(NO₃)₃ is 242 g/mol.

Learn more about gram-formula mass, here:

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Gram formula mass is the mass of 1 mol of substance.

the given compound is Fe(NO₃)₃

the molar mass of Fe(NO₃)₃ can be calculated taking the sum of the products of the individual elements by the number of atoms of the element making up the compound.

molar mass of Fe(NO₃)₃ = molar mass of Fe + 3 (molar mass of N + (3 x molar mass of O))

molar mass of Fe - 56, N - 14 and O - 16 g/mol

substituting the values in the above formula

molar mass of Fe(NO₃)₃ = 56 + 3 (14 + (3 x 16) )

molar mass of Fe(NO₃)₃ = 56 + 3 (14 + 48) = 56 + 3(62) = 56 + 186 = 242

therefore molar mass of Fe(NO₃)₃ is 4)242 g/mol

What is the correct formula for iron(III) oxide?

Answers

Answer:Fe2O3

Explanation:

the roman numeral tells you the charge of the metal, and you know oxygen is -2 charge so you need the least common multiple of +3 and -2 so that they cancel out, which is 6 so you need 2 of the +3 and 3 of the -2

Answer:

Fe 3+

Explanation:

iron is Fe and it's 3 and has positive

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