For each of the following data sets find the range and the standard deviation. a) The measured concentration of a sodium hydroxide (NaOH) solution: 0.01003, 0.01002, 0.00993, 0.01019, and 0.01008 M.
b) The percentage of iron determined to be in an ore sample: 21.7, 18.3, 17.0, and 20.0%.

i have know clue i guess aluminum

i think lol

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

the earth would become to overheated and everything alive on it will eventually die from overheating. plants will eventually die as well, water will evaporate, and it will be nothing but a hot planet without anything living on it.

b. accuracy of the data matters alot more than its number of digits, organization or amount of detail. quantitative observation is more accepted than the qualitative observation.