A single water molecule has a mass of 2.99 ×10^-23 g. Each molecule contains two hydrogen atoms

step 1 So in atomic unit mass, what is the mass of one water molecule? So we see that water molecule ha

A single water molecule has a mass of 2.99 ×10^-23 g. Each...

A single water molecule has a mass of $2.99 \times 10^{-23} \mathrm{~g}$. Each molecule contains two hydrogen atoms that together make up $11.2 \%$ of the mass of the water molecule. What is the mass in grams of a single hydrogen atom?

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Key Concepts

Atomic Mass Calculation

Atomic mass calculation involves determining the mass of a single atom from the given total mass and the percentage contribution of that element. This is done by first calculating the total mass attributed to the element based on its percentage, and then dividing that mass by the number of corresponding atoms present in the molecule.

Mass Percentage

Mass percentage refers to the proportion of the total mass of a compound that is contributed by a specific component. In problems like these, knowing that a certain percentage of the molecule's mass comes from hydrogen enables one to calculate the absolute mass of the hydrogen content within the molecule.

Molecular Composition

This concept addresses the structure and composition of molecules, detailing how atoms combine to form a molecule. Understanding that a water molecule consists of two hydrogen atoms and one oxygen atom is essential for determining how the overall mass is distributed among its constituent atoms.

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