CHEMISTRY MIDDLE SCHOOL

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

Answer 1
Answer:

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:

brainly.com/question/1405970

#SPJ6
Answer 2
Answer:

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

Related Questions

Convert 11 degrees ° Fahrenheit to Celsius. (Round to the nearest tenth.)
How does the temperature and pressure change inside the earth, moving downward from the crust to the core?A. Both temperature and pressure decrease. B. Both temperature and pressure increase. C. Temperature increases, but pressure decreases. D. Temperature decreases, but pressure increases.
How many liters of O2 gas will be produced at STP from 4 moles of KC1O3
What happens to the motion between water molecules when liquid water transforms to a solid?Hydrogen bonds are broken. Atoms in the liquid water move more slowly. Atoms in the liquid water move more quickly. More hydrogen bonds form between the molecules.
2 bromocyclopentanamine line formula

What's a physical property that describes how something feels

Answers

Some physical property's that describe how something feels is texture. 

How do you do problem #15?

Answers

you would convert the cg to g. 1.66 cg is 0.0166 g. then you add. 0.398 + 0.0166 = 0.4146. the answer is 0.4146 grams.

Help on question 1b please? (image attached)

Answers

I believe your answer Is C. An ammonia molecule has a trigonometrical pyramidal shape. Figure C has a has a trigonometrical pyramidal shape.

I hope I help

What three parts make up a single nucleotide

Answers

A single nucleotide is made up of the three parts known as phosphoric acid, deoxyribose and a nitrogenous base

What three parts are in a single nucleotide ?

The part of the nucleotide that determines the genetic information is the Nitrogenous base. There are four different types of nitrogenous bases: adenine (A), guanine (G), cytosine (C), and thymine (T).

The part of the nucleotide that provides the structure and stability of the molecule. The sugar in DNA is deoxyribose, while the sugar in RNA is ribose.

The Phosphate group is part of the nucleotide that provides energy and helps to link nucleotides together. It is also known as phosphoric acid.

Find out more on nucleotides at brainly.com/question/14067588

#SPJ6
Hello!

A single nucleotide is composed of phosphoric acid, deoxyribose and a nitrogenous base (adenine, guanine, thymine or cytosine).

3. For the following reaction, calculate how many grams of each product are formed when 4.05 gof water is used.
2 H2O → 2 H2 + O2

Answers

Answer:

\large \boxed{\text{0.453 g of H$_(2)$; 3.60 g of O$_(2)$}}

Explanation:

We will need a balanced chemical equation with masses and molar masses, so, let's gather all the information in one place.

MM:                    2.016    32.00

            2H₂O ⟶ 2H₂   +   O₂

m/g:      4.05

1. Mass of hydrogen

(a) Moles of H₂O

\text{Moles of H$_(2)$O} = \text{4.05 g H$_(2)$O}* \frac{\text{1 mol H$_(2)$O}}{\text{18.02 g H$_(2)$O }}= \text{0.2248 mol H$_(2)$O}

(b) Moles of H₂

\text{Moles of H$_(2)$} = \text{0.2248 mol H$_(2)$O } * \frac{\text{2 mol H$_(2)$}}{\text{2 mol H$_(2)$O }} = \text{0.2248 mol H$_(2)$}

(c) Mass of H₂

\text{Mass of H$_(2)$} =\text{0.2248 mol H$_(2)$} * \frac{\text{2.016 g H$_(2)$}}{\text{1 mol H$_(2)$}} = \textbf{0.453 g H$_(2)$}\n\n\text{The reaction produces $\large \boxed{\textbf{0.453 g}}$ of H$_(2)$}

2. Mass of oxygen

(a) Moles of O₂

\text{Moles of O$_(2)$} = \text{0.2248 mol H$_(2)$O } * \frac{\text{1 mol O$_(2)$}}{\text{2 mol H$_(2)$O}} = \text{0.1124 mol O$_(2)$}

(b) Mass of O₂

\text{Mass of O$_(2)$} =\text{0.1124 mol O$_(2)$} * \frac{\text{32.00 g O$_(2)$}}{\text{1 mol O$_(2)$}} = \textbf{3.60 g O$_(2)$}\n\n\text{The reaction produces $\large \boxed{\textbf{0.453 g of H$_(2)$ and 3.60 g of O$_(2)$}}$}

Select all of the characteristics that define matter. A.) Matter has mass. B.)Matter has volume (takes up space). C.)Atoms and compounds are made out of matter. D.) All matter has the same density.

Answers

Explanation:

Matter is defined as the substance that has mass and occupies space.

This means every matter will have mass and every matter will also have volume as it occupies space.

Every matter is made up of number of atoms as these atoms are the small sub-units that combine together and constitute a matter.

Hence, the statement atoms and compounds are made out of matter is not true.

As density is mass present in per unit volume. Therefore, every matter will vary in density.

Thus, we can conclude that characteristics that define matter are as follows.

  • Matter has mass.
  • Matter has volume (takes up space).

Answer:

The answer to your question is: a, b and c

Explanation:

A.) Matter has mass. this option is correct, matter is formed by mass.

B.)Matter has volume (takes up space). this option is correct, matter takes up space.

C.)Atoms and compounds are made out of matter. This option is correct, all atomsand compounds are made out of matter.

D.) All matter has the same density. This optio is wrong, matter of different elements or compounds have different density.
Other Questions
Which compounds are classified as Arrhenius acids?(1) HCl and NaOH (2) HNO3 and NaCl (3) NH3 and H2CO3 (4) HBr and H2SO4
If a bottle of olive oil contains 1.3 kg of oil what is the volume in mL of the oil?​
Which of the following did Antoine Lavoisier incorrectly characterize as matter? light silicone dioxide mercury
The softest mineral in the Mohs hardness scale is?