Questions: How many atoms of hydrogen (H) are present in 200 molecules of ammonia (NH3)? Express your answer numerically.

Transcript text: How many atoms of hydrogen $(\mathrm{H})$ are present in 200 molecules of ammonia $\left(\mathrm{NH}_{3}\right)$ ? Express your answer numerically.

Solution

Solution Steps

Step 1: Determine the number of hydrogen atoms in one molecule of ammonia

Ammonia ($\mathrm{NH}_3$) consists of one nitrogen atom and three hydrogen atoms. Therefore, each molecule of ammonia contains 3 hydrogen atoms.

Step 2: Calculate the total number of hydrogen atoms in 200 molecules of ammonia

To find the total number of hydrogen atoms in 200 molecules of ammonia, multiply the number of hydrogen atoms in one molecule by the number of molecules: \[ \text{Total hydrogen atoms} = 3 \times 200 \]

Step 3: Perform the multiplication

\[ 3 \times 200 = 600 \]