Question

Дано: H2O 1,8 грам Найти: M, N, n, V​

Answer 1

Ответ:

M= 18 г/моль

N(что конкретно тут имеется в виду)

n= 0.1

V(тоже самое что и с N, вы хотите через плотность решение?)

Если так, то: 0.0018

Объяснение: поправьте если что

Answer 2

Problem Statement

You are given the following information: - Mass of H2O = 1.8 grams

You need to find: - M (molar mass) - N (number of moles) - n (number of molecules) - V (volume)

Solution

To find the values of M, N, n, and V, we can use the given information and relevant formulas.

Molar Mass (M)

The molar mass (M) is the mass of one mole of a substance. To find the molar mass of H2O, we need to know the atomic masses of hydrogen (H) and oxygen (O).

The atomic mass of hydrogen (H) is approximately 1 gram/mol, and the atomic mass of oxygen (O) is approximately 16 grams/mol.

The molar mass of H2O can be calculated as follows: M(H2O) = 2 * M(H) + M(O)

Substituting the atomic masses: M(H2O) = 2 * 1 + 16 = 18 grams/mol

Therefore, the molar mass of H2O is 18 grams/mol.

Number of Moles (N)

The number of moles (N) can be calculated using the formula:

N = mass / molar mass

Substituting the given values: N = 1.8 grams / 18 grams/mol

Calculating the value: N = 0.1 moles

Therefore, the number of moles of H2O is 0.1 moles.

Number of Molecules (n)

The number of molecules (n) can be calculated using Avogadro's number, which states that one mole of any substance contains 6.022 x 10^23 molecules.

The number of molecules (n) can be calculated as follows: n = N * Avogadro's number

Substituting the values: n = 0.1 moles * 6.022 x 10^23 molecules/mol

Calculating the value: n = 6.022 x 10^22 molecules

Therefore, the number of molecules of H2O is 6.022 x 10^22 molecules.

Volume (V)

To calculate the volume (V), we need to know the density of water. The density of water is approximately 1 gram/cm^3.

The volume (V) can be calculated using the formula:

V = mass / density

Substituting the given values: V = 1.8 grams / 1 gram/cm^3

Calculating the value: V = 1.8 cm^3

Therefore, the volume of H2O is 1.8 cm^3.

Summary

Based on the given information, we have calculated the following values for H2O: - Molar Mass (M): 18 grams/mol - Number of Moles (N): 0.1 moles - Number of Molecules (n): 6.022 x 10^22 molecules - Volume (V): 1.8 cm^3

Please let me know if you need any further assistance!