Astudent weighs a sample of potassium hydrogen phthalate (khp) to prepare a primary standard for a titration. she later discovers that the khp was contaminated with sugar. to determine the amount of khp in the mixture, she takes 5.368 g5.368 g of the mixture and make a 100.0 ml100.0 ml solution. the student then titrates 10.00 ml10.00 ml of this solution with a 0.1224 m0.1224 m sodium hydroxide solution. she finds that 16.74 ml16.74 ml of the naoh naoh solution is needed to reach the end point. what is the percent by mass of khp in the mixture

you need to take a look at the periodic system in order to sort these elements into pairs that would most likely exhibit similar chemical properties. first, you need to find elements that are found in the same group (groups are vertical in the periodic system), and then to see whether they have the same valence number. if they meet these criteria, they will have similar properties.

the first pair: ne (neon) and kr (krypton), are noble gases found in group 8

the second pair: li (lithium) and k (potassium), found in group 1

the third pair: s (sulfur) and te (tellurium), found in group 6

c. because step up transformer steps up the input voltage i.e increases the input voltage  

the number of turns are greater on the secondary side of step up transformer  

transformer does not handle dc current

explanation:

it’s previous models   because when i picked that son of a gun’s answer it was wrong look for previous models because they might make it a different letter