The anesthetic chloroform (CHCI3, molar mass=119.36 g/mol) can be prepared by the reaction of methane CH4 molar mass= 16.04 g/mol with chlorine according to the following balanced equation: CH4+3CI2 CHCI3+3HCI

Assuming 10.50g of methane and 20.50g of chlorine are used, answer the following questions:

How many moles of chlorine are used? Be sure your answer has the correct number of significant figures.

moles of chlorine

To find the number of moles of chlorine used, we first need to calculate the molar mass of chlorine (Cl2), which is 70.90 g/mol.

Next, we need to convert the given mass of chlorine (20.50g) to moles using the formula:

moles = mass / molar mass

moles = 20.50g / 70.90 g/mol
moles = 0.289 moles

Therefore, 0.289 moles of chlorine are used.