1. How many molecules of ammonia, NH3, are produced from 12.5 grams of hydrogen in the following balanced equation?

If you tried to "cut and paste" it rarely works here. You will n eed to type out the balanced equation.

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The balanced reaction for that process is

N2 + 3 H2 = 2 NH3

12.5 g of H2 is 6.25 moles. You will form 2/3 as many moles of NH3. Each mole is 6.02*10^23 molecules.

You finish up.

To determine the number of molecules of ammonia produced, we need to use the balanced chemical equation and the concept of molar ratios.

The balanced equation for the reaction between hydrogen and ammonia is:

3H2 + N2 -> 2NH3

From the equation, we can see that 3 moles of hydrogen produce 2 moles of ammonia.

To find the number of moles of hydrogen, we can use its molar mass, which is 2.016 g/mol.

Given that we have 12.5 grams of hydrogen, we can calculate the number of moles using the formula:

moles = mass / molar mass

moles = 12.5 g / 2.016 g/mol

moles = 6.18 mol

Now, using the molar ratio from the balanced equation, we can find the number of moles of ammonia produced:

moles of NH3 = moles of H2 * (2 moles of NH3 / 3 moles of H2)

moles of NH3 = 6.18 mol * (2/3)

moles of NH3 = 4.12 mol

Finally, we can convert the moles of ammonia to molecules using Avogadro's number, which is 6.022 x 10^23 molecules/mol:

number of molecules = moles of NH3 * Avogadro's number

number of molecules = 4.12 mol * (6.022 x 10^23 molecules/mol)

number of molecules = 2.48 x 10^24 molecules

Therefore, 12.5 grams of hydrogen will produce approximately 2.48 x 10^24 molecules of ammonia.

To determine the number of molecules of ammonia produced from 12.5 grams of hydrogen, we need to follow a step-by-step approach:

1. Write down the balanced chemical equation:
3H2 + N2 → 2NH3

2. Calculate the molar mass of hydrogen:
- Hydrogen (H) has a molar mass of 1 gram/mol.

3. Convert grams of hydrogen to moles:
- Divide the given mass (12.5 grams) by the molar mass of hydrogen (1 gram/mol).
- 12.5 g H2 ÷ 2 g/mol = 6.25 mol H2

4. Use the stoichiometry of the balanced equation to determine the ratio of hydrogen to ammonia:
- By examining the balanced equation, we can see that for every 3 moles of hydrogen (H2), we obtain 2 moles of ammonia (NH3).

5. Calculate the number of moles of ammonia produced:
- Multiply the number of moles of hydrogen (6.25 mol) by the ratio of ammonia to hydrogen (2/3 mol/mol).
- 6.25 mol H2 × (2 mol NH3 / 3 mol H2) = 4.17 mol NH3

6. Convert moles of ammonia to the number of molecules:
- Use Avogadro's number, which states that 1 mole of any substance contains 6.022 × 10^23 molecules.
- 4.17 mol NH3 × (6.022 × 10^23 molecules/mol) = 2.51 × 10^24 molecules of NH3

Therefore, 12.5 grams of hydrogen will produce approximately 2.51 × 10^24 molecules of ammonia, NH3.