How many MILILITERS (mL) of a 12.1 M stock solution of HCl is needed to make 750. mL of 1.50 M HCl? [The molar mass of HCl is 36.5 g/mol]

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line

Which of the following is in the lanthanide family? a) uranium b) promethium c) silver d) gold