Calculate the molar concentration of the standard KIO3 solution (ii) Calculate the molar concentration of Na2S2O3 (iii) Using the initial volume and the end point volume, calculate the number of moles of Na2S2O3 added to the vitamin C solution for each trial of the analysis (vi) Calculate the moles of I3 - generated from IO3 - in Eq. 1 (p. V.111))

substituting a hydrogen atom with a halogen in a hydrocarbon:

- the single bond remains single. a is wrong.

- the bond with hydrogen is as strong as with a halogen. c is wrong

- a hydrocarbon is saturated if there is no double bond. we do not know that so d is wrong.

- carbon will always have four valence electrons. e is wrong.

by elimination, the correct answer is b. the boiling point of the new compound increases.

rosa was looking for patterns to predict the products of chemical reactions. she recorded three similar decomposition reactions in the table.she should record 2licl + 3o2.

in the last row of the table. it is the thermal decomposition of chlorate lithium, hence, she should record these products as: lithium chloride ( 2licl ) and oxygen ( 3o2 )   2 > 2 licl + 3o2.

∠gdh and ∠edh on edg.

answer is c