Zakaria

0.500 mol of Ca(IO3)2 contains ------ mol of iodine, I; to supply this much iodine,----- g of calcium iodate are needed. [Iodised salt contains a trace amount of calcium iodate, Ca(IO3)2, to help prevent a thyroid condition called goitre.]

What volume of 0.025 M sodium bromide, NaBr, contains 2.0 ´ 10-4 mole of Br-? a. 0.040 L b. 0.080 L c. 4.0 mL d. 8.0 mL e. 16 mL

What is the reduction half-reaction for the reaction between iron(II) sulfate and potassium permanganate in a sulfuric acid solution? 5Fe2+(aq) + MnO4–(aq) + 8H+(aq) --> 5Fe3+(aq) + Mn2+(aq) + 4H2O(l) a. MnO4– + 3e– --> Mn2+(aq) + 4H2O b. MnO4–(aq) + 8H+(...

2Li(s) + 2H+(aq) + SO42–(aq) ---> 2Li+(aq) + SO42–(aq) + H2(g) The reaction shown above between lithium and sulfuric acid is best described as 1 acid-base. 2 oxidation-reduction. 3 precipitation. a. 1 only b. 2 only c. 3 only d. 1 and 2 only e. 1, 2, and...

if 11,47,81,18,65,selected from 1-90 next selections will be what numbers

A car starts to move nd accelerated at 4m/s2 for 8 seconds (u=0 V=32m/s a=4 m/s2 t=8) How fast is it moving? How far does it travel in this time?