A student performs an experiment to determine the density of a sugar solution. S
ID: 522494 • Letter: A
Question
A student performs an experiment to determine the density of a sugar solution. She obtains the following results: 179 g/mL 1.81 g/ml 1.80 g/ml 1.81 g/mL lf the actual value for the density of the sugar solution is 1.80 g/ml. which statement below best describes her results? A) Her results are precise, but not accurate. B) Her results are accurate, but not precise. C) Her results are both precise and accurate D) Her results are neither precise nor accurate. E) It isn't possible to determine with the information given. Which of the following elements is a lanthanide? A) Na B) Rg C) Ar D) Ce E) U In which set do all elements tend to form cations in binary ionic compounds? A) N, Sb, Bi B) S, Cl, Br C) Ca, Zn, Pb D) Cs, B, O What is the empirical formula of a compound that is 48 6% H, and 43.2% O by mass? A) C_6H_12O_4 B) C_6HO_5 C) C_3H_6O_2 D) C_4H_8O_3 Choose the pure substance from the list below. A) tea B) a casserole C) carbon dioxide D) sugar water E) pomegranate juiceExplanation / Answer
10)
All her data are close to each other. So they are precise
They are all closer to actual value. So they are accurate
Answer: C
11)
Cerium (Ce) is a lanthanide
Answer: D
12)
in A, N forms anion
in B, all forms anion
in C, all forms cation
in D, O form anion
Answer: C
I am allowed to answer only 1 question at a time
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.