Question

Якою є маса 108,32*10^25 молекул аміаку NH2? срочно!!!

Answer 1

Ответ:

30,6 кг

Объяснение:

N = 108.32·10²⁵

M = 0,017 кг/моль - молярна масса аммиака

Na = 6.022·10²³ 1/ моль - постоянная Авогадро

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m - ?

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m = m₀ · N

Масса одной молекулы

m₀ = M : Na

Тогда масса N молекул

m = M · N : Na = 0.017 · 108.32·10²⁵ :  6.022·10²³ = 30.6 (кг)

Answer 2

Calculating the Number of Molecules in Ammonia (NH3)

To calculate the number of molecules in a given mass of ammonia (NH3), we can use the concept of Avogadro's number and the molar mass of ammonia.

Molar Mass of Ammonia (NH3): The molar mass of ammonia (NH3) is approximately 17.031 g/mol.

Avogadro's Number: Avogadro's number is approximately 6.022 x 10^23 molecules/mol.

Calculation:

To find the number of molecules in 108.32*10^25 molecules of ammonia (NH3), we can use the following steps:

1. Convert the given mass of ammonia to moles using the molar mass. 2. Use Avogadro's number to convert moles to molecules.

Solution:

1. Converting Mass to Moles: - Given mass of ammonia = 108.32*10^25 molecules - Molar mass of ammonia (NH3) = 17.031 g/mol

Using the formula: \[ \text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}} \]

\[ \text{moles} = \frac{108.32*10^25 \text{ molecules} \times 17.031 \text{ g/mol}}{6.022 \times 10^{23} \text{ molecules/mol}} \]

\[ \text{moles} \approx 303.6 \times 10^2 \text{ moles} \]

2. Converting Moles to Molecules: Using Avogadro's number: \[ \text{Number of molecules} = \text{moles} \times \text{Avogadro's number} \] \[ \text{Number of molecules} \approx 303.6 \times 10^2 \text{ moles} \times 6.022 \times 10^{23} \text{ molecules/mol} \] \[ \text{Number of molecules} \approx 1.83 \times 10^{26} \text{ molecules} \]

Answer:

The number of molecules in 108.32*10^25 molecules of ammonia (NH3) is approximately 1.83 x 10^26 molecules.