How many milliliters of a 0.82M HCl solution do you need to obtain 0.0038mol of HCl ?
To find the number of milliliters (mL) of a 0.82M HCl solution needed to obtain 0.0038mol of HCl, you can use the equation:
Molarity (M) = moles (mol) / volume (L)
First, rearrange the equation to solve for volume:
Volume (L) = moles (mol) / Molarity (M)
Since the given amount is in milliliters, you will need to convert mL to L.
1 L = 1000 mL
Now, substitute the values into the equation:
Volume (L) = 0.0038 mol / 0.82 M
Volume (L) = 0.0046 L
Since the answer is required in milliliters, convert the volume back to mL:
Volume (mL) = 0.0046 L * 1000 mL/L
Volume (mL) = 4.6 mL
Therefore, you will need 4.6 milliliters of the 0.82M HCl solution to obtain 0.0038 mol of HCl.