how many moles of ammonia contain 1.51 x 10 24power NH3 molecules

need help with formula please

To calculate the number of moles of ammonia (NH3) given the number of molecules, you can use Avogadro's constant.

Avogadro's constant is defined as 6.022 x 10^23 molecules per mole.

To calculate the number of moles, you can use the following formula:

Number of moles = Number of molecules / Avogadro's number

In this case, you have 1.51 x 10^24 molecules of NH3.

Plugging in the values into the formula, we get:

Number of moles = (1.51 x 10^24) / (6.022 x 10^23)

Number of moles ≈ 2.51

Therefore, there are approximately 2.51 moles of ammonia (NH3) present.

To find the number of moles of ammonia containing a given number of molecules, you need to use Avogadro's number and the definition of a mole.

Here's how you can calculate it:

Step 1: Write down the given information:
Number of NH3 molecules = 1.51 x 10^24

Step 2: Identify Avogadro's number:
Avogadro's number is the number of particles (atoms, molecules, or ions) in one mole of a substance. It is approximately 6.022 x 10^23 particles per mole.

Step 3: Use the formula:
Number of moles = Number of particles / Avogadro's number

Now, substitute the values into the formula:

Number of moles = (1.51 x 10^24) / (6.022 x 10^23)

Step 4: Simplify the expression:
Number of moles ≈ 2.50728616

Step 5: Round the answer:
Since we are dealing with moles, it is appropriate to round to the nearest hundredth. Therefore, the number of moles of ammonia is approximately 2.51 moles.