Show your calculations to make 100 ml of a 0.5M solution of NaCl, from a stock solution of 5M NaCl

A chemist wants to make 20. L of 0.10 M solution of HCl from concentrated HCl. Concentrated HCl is 11 M HCl. How many milliliters of concentrated hydrochloric acid does she need?

Label the compounds listed below as strong electrolytes or weak electrolytes and briefly state your reasoning. I. AI(OH)3 II. MgCl₂ III. HNO3 IV. H3PO4

A 22.47 mL sample of dilute HBr requires 31.92 mL of 0.117 M KOH for neutralization.  Determine the molar concentration of HBr in the sample

9. A technician is preparing a 40% solution. What volume of stock solution should be use to prepare 30 mL?

Calculate the molarity when 3.72 mol of Formic Acid (CH2O2) is dissolved in a 581 mL solution. Can someone please help!!

I Review | Constants | Periodic Table Determine the volume, in milliliters, required to prepare each of the following diluted solutions: Part A 259 mL of a 0.200 M HNO3 solution from a 4.00 M HNO3 solution Express your answer with the appropriate units. HA ? Value Units Submit Request Answer Part B 713 mL of a 0.100 M MgCl, solution using a 6.50 M MgCl, solution Express your answer with the appropriate units. µA ? Value Units

16. Calculate the mass of NaOH in grams required to prepare a 1900 ml solution with a concentration of 6.3M. Cocaoa

What mass of CaCO3 would be needed to react with 25 mL of 0.2 M HCI (m CaCO3 100 g mol-¹) =

1a) first pic 1b) second pic