what is the number of moles of HCl in 50mL of 1.0M HCl

mols= M x L

To calculate the number of moles of a substance, you can use the formula:

moles = (concentration × volume) / 1000

In this case, you have a concentration of 1.0 M (moles per liter) and a volume of 50 mL. However, it is important to note that the volume should be converted to liters before calculating the moles. So, the first step is to convert the volume from milliliters to liters by dividing it by 1000:

50 mL ÷ 1000 = 0.05 L

Now, you can use the formula to calculate the number of moles:

moles = (1.0 M × 0.05 L) / 1000
= 0.05 moles

Therefore, there are 0.05 moles of HCl in 50 mL of 1.0 M HCl.