When working with very low concentrations, such as 0.000245 M, it can be more convenient to represent the concentration as millimolar instead of as molar, in other words mmol/L instead of mol/L. Which is the correct representation of 0.000245 M as the millimolar concentrati on?

In this experiment, a series of solutions are prepared by combining multiple components into a single container. One solution prepared contains 5.00 mL of (1.1x10^-2) molar KI, 10.00 mL of 0.0010 molar Na2S2O3, 15.00 mL of water, 10.00 mL of (3.90x10^-2) molar KBrO3, and 10.00 mL of (1.000x10^-1) molar HCl. What is the concentration of iodide ions in this solution? Note: Your answer is assumed to be reduced to the highest power possible. When answering this problem, report the answer with the appropriate number of significant figures. Enter your answer USING scientific notation. When entering units, use proper abbreviated units with proper capitalization

Consider the table below: Compound Density Ether 0.8415 g/mL Dichloromethane 1.311 g/mL Water 1.00 g/mL   In an immiscible mixture of water and dichloromethane, which compound is on the top?                                           ["water", "dichloromethane", "cannot determine from this information"]            In an immiscible mixture of water and ether, which compound is on top?                                                    ["water", "ether", "cannot determine from this information"]

A student sets up the following equation to solve a problem in solution stoichiometry. (The ? stands for a number the student is going to calculate.) Enter the units of the student's answer.   I'm confused on what the next step is from here. I dont know if I need to switch the 10-3 to the bottom to make the 103 and how would I solve the problem from here?

100.00 mL of 2000ppm NaCl stock solution. -2.0319g of NaCl weighed out What is the exact concentration of the stock solution?

ps://openvellum.ecollege.com/course.html?courseld=16594544&OpenVellumHMAC=e0a02f77f7d1 回☆ 21 v Part G Calculate (OH\for a solution formed by adding 4.10 mL of 0.100 M KOH to 10.0 mL of 6.3 x 102M C Ca(OH)2. Express your answer using two significant figures. [OH]]= 0.33 %3D M

How many grams of Mg3(PO4)2 are needed to make 3.000 L of a 2.500 M solution ?  The GFW for magnesium phosphate is 262.87 g.                                                   _____________ mol                                                   (  _____________ L)(–––––––––––––––––––––––) =  ________________ mol                                              _____________ L                                                                                                          ________________ g ________________ mol  (–––––––––––––––––––––––) =  _____________ g                                                   _________________ mol

. Prepare 50 mL of an aqueous solution of 2.5% (w/v) NaCl (sodium chloride, salt).Determine how many grams of sodium chloride are required. Show all steps for this calculation, using dimensional analysis with units clearly identified.2. Prepare this aqueous solution, using a volumetric flask for the precise final volume measurement. It is not a problem to use tap water.3. Clearly write the procedure (step by step) for making this solution

Calculate the volume in liters of a 0.099 mol/L barium chlorate solution that contains 75.0 g of barium chlorate (Ba(CIO,)): Round your answer to 2 significant digits. L Ox10

Molarity