How Many Molecules In 3.6G Of Water?

To determine the number of moles in 3.6 grams of H2O (water), we need to use the molecular weight of water and the formula for calculating moles. Water (H2O) consists of two hydrogen atoms (H) and one oxygen atom (O). The atomic masses of hydrogen and oxygen are approximately 1 gram/mol and 16 grams/mol, respectively.

To calculate the molecular weight of water (H2O), we sum the atomic masses:

Molecular weight of H2O = (2 x 1 g/mol for hydrogen) + (1 x 16 g/mol for oxygen) = 2 g/mol + 16 g/mol = 18 g/mol

Now, we can calculate the number of moles in 3.6 grams of water:

Number of moles = Mass (in grams) / Molecular weight
Number of moles = 3.6 grams / 18 g/mol = 0.2 moles

So, there are 0.2 moles of H2O in 3.6 grams of water. This calculation helps us understand the quantity of a substance in terms of moles, which is a fundamental concept in chemistry.

How many molecules are present in 1 gram of water? To determine this, we can use Avogadro’s constant, which tells us that one mole of any substance contains approximately 6.022 x 10^23 molecules. In the case of water, its molar mass is approximately 18 grams per mole. So, if we have 1 gram of water, we can calculate the number of molecules as follows:

(1 gram of water) / (18 grams per mole) = 1/18 moles of water

Now, we can find the number of molecules:

(1/18 moles) x (6.022 x 10^23 molecules per mole) = 3.3455 x 10^22 molecules

Therefore, there are approximately 3.3455 x 10^22 molecules in 1 gram of water.

To determine the number of molecules in 6 grams of water, we need to consider Avogadro’s constant, which tells us that 1 mole of any substance contains approximately 6.022 × 10²³ molecules. Therefore, in the case of water, which has a molar mass of about 18 grams per mole (H2O), we can calculate the number of molecules as follows:

Number of molecules in 6 grams of water = (6 grams / 18 grams per mole) × 6.022 × 10²³ molecules per mole

By performing this calculation, we find that there are approximately 2 × 10²³ molecules in 6 grams of water. This information helps us understand the relationship between mass, moles, and the number of molecules in a given substance.