How would you prepare 100 ml of 50 mM glucose/10mM NaCl from the 0.5M glucose and 0.5M NaCl solutions? How much water do you need? 7. A stock solution of 1.00 M NaCl is available. How many milliliters are needed to make 100.0 mL of 0.750 M 8. Concentrated HCl is 12.0 M. What volume is needed to make 2.00 L of 1.00 M solution? 9. A stock solution of 10.0 M NaOH is prepared. From this solution, you need to make 250.0 mL of 0.375 M solution. How many ml will be required? 10. Calculate the final concentration if 2.00 L of 3.00 M NaCl and 4.00 L of 1.50 M NaCl are mixed. Assume there is no volume contraction upon mixing. 11. Calculate the final concentration if 2.00 L of 3.00 M NaCl, 4.00 L of 1.50 M NaCl and 4.00 L of water are mixed. Assume there is no volume contraction upon mixing. 12. How do you prepare a 50-ml solution of 20% (w/v) SDS?