Percent error question?
1. A student determines the density of an unknown metal to be 5.2g/ml. The actual value of the density of the metal is 4.8 g/ml. State the formula for percent error. Calculate the percent error.
The second question is not a percent error question
2. How would you prepare 500 ml of 3 M HCl?
for this one the only thing I know is that 3 M HCl = 3 mol/L HCl