Author Question: Oxygen forms an ion with a charge of ________. A) 2- B) 2+ C) 3- D) 3+ E) ... (Read 101 times)

D2AR0N · **on:** Aug 27, 2018

Oxygen forms an ion with a charge of ________.

A) 2-
B) 2+
C) 3-
D) 3+
E) 6+

Question 2

Solid aluminum and gaseous oxygen react in a combination reaction to produce aluminum oxide:

4Al (s) + 3O2 (g) 2Al2O3 (s)

The maximum amount of Al2O3 that can be produced from 2.5 g of Al and 2.5 g of O2 is ________ g.
A) 9.4
B) 7.4
C) 4.7
D) 5.3
E) 5.0

Question 3

At elevated temperatures, dinitrogen pentoxide decomposes to nitrogen dioxide and oxygen:

2N2O5(g) 4NO2 (g) + O2 (g)

When the rate of formation of O2 is 2.2 10-4 M/s, the rate of decomposition of N2O5 is ________ M/s.
A) 7.2 10-3
B) 3.6 10-3
C) 1.8 10-3
D) 1.4 10-2
E) 0.00090

Question 4

What is the maximum amount in grams of SO3 that can be produced by the reaction of 1.0 g of S with of O2 via the equation below? S (s) + O2 (g) SO3 (g) (not balanced)

A) 0.27
B) 1.7
C) 2.5
D) 3.8
E) 2.0

Question 5

The pH of a solution prepared by dissolving 0.350 mol of solid dimethylamine hydrochloride ((CH3 )2NH2Cl) in 1.00 L of 1.10 M dimethylamine ((CH3 )2NH) is ________. The Kb for methylamine is 5.40 10-4. (Assume the final volume is 1.00 L.)

A) 1.66
B) 2.77
C) 11.23
D) 11.14
E) none of the above

Bison · **Reply #1 on:** Aug 27, 2018

A FREE account is required to view all solutions!

Lorsum iprem. Lorsus sur ipci. Lorsem sur iprem. Lorsum sur ipdi, lorsem sur ipci. Lorsum sur iprium, valum sur ipci et, vala sur ipci. Lorsem sur ipci, lorsa sur iprem. Valus sur ipdi. Lorsus sur iprium nunc, valem sur iprium. Valem sur ipdi. Lorsa sur iprium. Lorsum sur iprium. Valem sur ipdi. Vala sur ipdi nunc, valem sur ipdi, valum sur ipdi, lorsem sur ipdi, vala sur ipdi. Valem sur iprem nunc, lorsa sur iprium. Valum sur ipdi et, lorsus sur ipci. Valem sur iprem. Valem sur ipci. Lorsa sur iprium. Lorsem sur ipci, valus sur iprem. Lorsem sur iprem nunc, valus sur iprium.

Answer Preview

Only 59% of students answer this correctly