How many moles are found in 25 grams of hydrogen chloride gas
moles = grams/molar mass
To find the number of moles in a given mass of a substance, you need to use the concept of molar mass and the formula:
Number of moles = Mass of substance / Molar mass
First, let's determine the molar mass of hydrogen chloride (HCl). To calculate the molar mass, you add up the atomic masses of the atoms in the compound. Hydrogen (H) has an atomic mass of approximately 1 gram per mole, and chlorine (Cl) has an atomic mass of approximately 35.5 grams per mole.
Molar mass of HCl = 1 g/mol (atomic mass of H) + 35.5 g/mol (atomic mass of Cl) = 36.5 g/mol
Now, you can use the formula mentioned earlier to find the number of moles:
Number of moles = Mass of substance / Molar mass
Number of moles = 25 g / 36.5 g/mol
Calculating this equation, we find:
Number of moles = 0.685 moles
Therefore, there are approximately 0.685 moles of hydrogen chloride gas in 25 grams of it.