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Ch.2 - Atoms, Molecules, and Ions
Chapter 2, Problem 14a2

In a series of experiments, a chemist prepared three different compounds that contain only iodine and fluorine and determined the mass of each element in each compound: Compound Mass of Iodine (g) Mass of Fluorine (g) 1 4.75 3.56 2 7.64 3.43 3 9.41 9.86 (a) Calculate the mass of fluorine per gram of iodine in Compound 2.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Mass Ratio

The mass ratio is a comparison of the mass of one substance to the mass of another substance. In this context, it refers to the mass of fluorine relative to the mass of iodine in a compound. This ratio is crucial for understanding the composition of the compound and can be calculated by dividing the mass of fluorine by the mass of iodine.
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Stoichiometry

Stoichiometry is the area of chemistry that deals with the relationships between the quantities of reactants and products in chemical reactions. It allows chemists to predict the amounts of substances consumed and produced in a reaction, which is essential for calculating mass ratios in compounds, as seen in the question.
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Compound Composition

Compound composition refers to the specific elements and their proportions that make up a chemical compound. Understanding the composition is vital for analyzing the properties and behavior of the compound, including how to calculate the mass of one element per unit mass of another, as required in the problem.
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Related Practice
Textbook Question

Rubidium has two naturally occurring isotopes, rubidium-85 (atomic mass = 84.9118 amu; abundance = 72.15%) and rubidium-87 (atomic mass = 86.9092 amu; abundance = 27.85%). Calculate the atomic weight of rubidium

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Textbook Question

A chemist finds that 30.82 g of nitrogen will react with 17.60, 35.20, 70.40, or 88.00 g of oxygen to form four different compounds. (a) Calculate the mass of oxygen per gram of nitrogen in each compound. 30.82 g N and 35.20 g O

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Textbook Question

A chemist finds that 30.82 g of nitrogen will react with 17.60, 35.20, 70.40, or 88.00 g of oxygen to form four different compounds. (a) Calculate the mass of oxygen per gram of nitrogen in each compound. 30.82 g N and 70.40 g O

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Textbook Question

A charged particle moves between two electrically charged plates, as shown here.

(a) What is the sign of the electrical charge on the particle?

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Textbook Question

The following diagram is a representation of 20 atoms of a fictitious element, which we will call nevadium (Nv). The red spheres are 293Nv, and the blue spheres are 295Nv. (a) Assuming that this sample is a statistically representative sample of the element, calculate the percent abundance of each element.

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Textbook Question

The following diagram is a representation of 20 atoms of a fictitious element, which we will call nevadium (Nv). The red spheres are 293Nv, and the blue spheres are 295Nv. (b) If the mass of 293Nv is 293.15 u and that of 295Nv is 295.15 u, what is the atomic weight of Nv?

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