let begin using te molar mass find the actual mass 0f an atom and molechie specilica ia willusel

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Question

Let's begin by using the molar mass to find the actual mass of an atom and molecule. Specifically, we will use the periodic table to find the mass of a single hydrogen atom and the mass of an oxygen molecule consisting of two oxygen atoms (O2). 1. The mass of an atom is 1.674 * 10^-24 grams. 2. The mass of a single molecule of O2 is 5.304 * 10^-23 grams (53.1 K/molecule). 3. The mass of a mole of O2 molecules is 6.022 * 10^23 molecules * 5.304 * 10^-23 grams/molecule = 31.998 grams. REFLECTION: The molecule H2O consists of one oxygen atom and two hydrogen atoms. Practice Problem: Find the molar mass of the molecule nitrogen pentachloride (NCl5). Express your answer in grams per mole, using the appropriate number of significant figures. Answer: The molar mass of NCl5 is 120.36 grams per mole. Submit Incorrect: Try Again; attempts remaining. Part B Practice Problem: What is the molar mass of the compound H3PO4? Express your answer in grams per mole, using the appropriate number of significant figures. Answer: The molar mass of H3PO4 is 97.99 grams per mole.

          Let's begin by using the molar mass to find the actual mass of an atom and molecule. Specifically, we will use the periodic table to find the mass of a single hydrogen atom and the mass of an oxygen molecule consisting of two oxygen atoms (O2).

1. The mass of an atom is 1.674 * 10^-24 grams.
2. The mass of a single molecule of O2 is 5.304 * 10^-23 grams (53.1 K/molecule).
3. The mass of a mole of O2 molecules is 6.022 * 10^23 molecules * 5.304 * 10^-23 grams/molecule = 31.998 grams.

REFLECTION:

The molecule H2O consists of one oxygen atom and two hydrogen atoms.

Practice Problem:

Find the molar mass of the molecule nitrogen pentachloride (NCl5).

Express your answer in grams per mole, using the appropriate number of significant figures.

Answer:

The molar mass of NCl5 is 120.36 grams per mole.

Submit

Incorrect: Try Again; attempts remaining.

Part B Practice Problem:

What is the molar mass of the compound H3PO4?

Express your answer in grams per mole, using the appropriate number of significant figures.

Answer:

The molar mass of H3PO4 is 97.99 grams per mole.

let begin using te molar mass find the actual mass 0f an atom and molechie specilica ia willuselne feriodic table t0 find ine mass of a sing 0 hyydrogen aloni and bne inass of an oxygen mole 30614

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