Kayla began a science experiment with 18 grams of an unknown solid. During the experiment, the change in the mass of the solid was -7 grams. What was the mass of the solid at the end of the experiment? To solve the problem, Edna subtracted 18 - (-7) and came up with an answer of 25 grams. Is Edna correct? Why or why not?

CL=( A-B ) *N * 35450/Volume of sample, N is ? Select one: a. N is the volume of the sample b. N is Neutralization c. N is Natural water d. N is Normality

Who wrote it Charles Dickens/Patricia Cornwell. 2 It's a family saga/It's a thriller/It's a biography. 3 ? It's about a tragic family/It's about the murder of a detective. 4 Where and In India in the 19th century/In New York in the 1990s. 5 A lawyer called Potts and his client, Lady Jane /A detective called Blunket. 6 Yes, it has. It came out a few years ago and starred Johnny Depp. 7 It ends really tragically/It's frustrating because we don't really know/They all live happily ever after. 8 ? I thought it was great/I couldn't put it down/I didn't want it to end/It was OK but I skipped the boring bits. 9 ? Yes, I would. It's great if you like a good thriller/It's a terrific holiday read.

What is the volume of 1000 moles of methanol at 298 K and 20.0 bar? (Answer in m³ and use at least three significant digits.) Selected Answer: 1223.29 Correct Answer: 0.0409 Answer range +/- 0.00005 (0.040850 - 0.040950)