Which one of the following elements does not exist as a diatomic molecule in nat

Jan 22nd, 2015
Sigchi4life
Category:
Biology
Price: $20 USD

Question description

3.Which one of the following elements does not exist as a diatomic molecule in nature?

(a) hydrogen (b) nitrogen (c) fluorine (d) neon

For questions 4. and 5., consider the following reaction:

4 Al (s) + 3 O2 (g) ⇒ 2 Al2O3 (s)

4. The reaction can be classified as which one of the following types?

(a) precipitation (b) decomposition (c) synthesis (d) double displacement

5. How many moles of Al2O3 can be produced from the reaction of 10.0 g of Al and 19.0 g of O2?

(a) 0.581 mol (b) 0.371 mol (c) 0.185 mol (d) 0.396 mol

6. What volume of 12.0 M HCl is required to make 75.0 mL of 3.50 M HCl?

(a) 21.9 mL (b) 0.560 mL (c) 257 mL (d) 75.0 mL

7. A fish tank holds 1.029 yd3 of water. What is this volume in cubic meters given that 1 m = 1.093 yd?

(a) 1.062 m3 (b) 0.9414 m3 (c) 1.125 m3 (d) 0.7881 m3

8. Which one of the following is a strong acid?

(a) HNO3 (b) CaSO4 (c) NH3 (d) NaOH

For questions 9. and 10., consider the heating curve of a hypothetical substance:

9. What is the boiling point of the substance?

(a) 0°C (c) 12°C

(b) −50°C (d) 75°C

10. What state of matter is the substance at 50°C?

(a) gas (c) solid

(b) liquid (d) not enough information


Tutor Answer

(Top Tutor) Daniel C.
(997)
School: Purdue University
PREMIUM TUTOR

Studypool has helped 1,244,100 students

Summary
Quality
Communication
On Time
Value
darnay
Feb 21st, 2017
" The best tutor out there!!!! "
Ask your homework questions. Receive quality answers!

Type your question here (or upload an image)

1828 tutors are online

Brown University





1271 Tutors

California Institute of Technology




2131 Tutors

Carnegie Mellon University




982 Tutors

Columbia University





1256 Tutors

Dartmouth University





2113 Tutors

Emory University





2279 Tutors

Harvard University





599 Tutors

Massachusetts Institute of Technology



2319 Tutors

New York University





1645 Tutors

Notre Dam University





1911 Tutors

Oklahoma University





2122 Tutors

Pennsylvania State University





932 Tutors

Princeton University





1211 Tutors

Stanford University





983 Tutors

University of California





1282 Tutors

Oxford University





123 Tutors

Yale University





2325 Tutors