Question

Please Answer All (Showing work won't be necessary, just the final answer)

10. How many moles of lithium ions are in 353.7 ml of 0.8926 M lithium phosphate?

A) 0.2265 mol B) 0.3157 mol C) 0.4050 mol D) 0.4942 mol

E) 0.6794 mol F) 0.9471 mol G) 1.215 mol H) 1.483 mol

I) none of these

11. What is the name of the acid HBrO4?

A) hydrobromic acid

B) bromic acid

C) bromous acid

D) perbromic acid

E) hypobromous acid

F) none of these are true

12. What is the oxidation state of oxygen in H2O2?

A) 0 B) +1 C) – 2 D) – 1 E) +2 F) + 3 G) – 3 H) none of these

13. A compound has the mass percent composition 95.8% W and 4.17% O, determine the formula of this compound, then give the name of this compound.

A) tungsten oxide

B) tungsten (I) oxide

C) tungsten (II) oxide

D) tungsten (III) oxide

E) tungsten (IV) oxide

F) tungsten (V) oxide

G) tungsten (VI) oxide

H) tungsten dioxide

I) none of these

14. What is the density of nitrogen trifluoride gas at STP?

A) 6.52 g/ml B) 3.17 g/ml C) 6.13 g/ml D) 4.82 g/ml

E) 0.765 g/ml F) 0.0900 g/ml G) 0.00652 g/ml H) 0.00317 g/ml

I) 0.00613 g/ml J) 0.00482 g/ml K) 0.0009 g/ml L) none of these

15. When 20.00 ml of sulfuric acid of unknown concentration is titrated with 0.1537 M NaOH, 27.38 ml of titrant is required to reach the end point. What was the concentration of the sulfuric acid?

A) 0.08417 M B) 0.09646 M C) 0.09796 M D) 0.1052 M

E) 0.1123 M F) 0.1206 M G) 0.1225 M H) 0.1403 M

I) 0.1683 M J) 0.1929 M K) 0.2104 M L) 0.2412 M

M) none of these

16. Which of the following 3 reactions have no reaction (NR)? (Hint: complete and balance the reaction, include phases, then do the net ionic and total ionic equations to see which is NR)

i) LiF + Mg(NO3)2 ?

ii) Na2CO3 + HCl ?

iii) K2S + (NH4)2SO4 ?

A) only (i) B) only (ii) C) only (iii) D) both (i) and (ii)

E) both (i) and (iii) F) both (ii) and (iii) G) all 3 H) none of these

17. Which of the following 2 reactions have no reaction (NR)?

i) Mn (s) + FeCl3 (aq) ?

ii) Fe (s) + NiCl2 (aq) ?

A) neither reaction B) only (i) C) only (ii) D) both (i) and (ii)

Answer 1

www.miralmulticolour.com - 10 Male = Molauty & volume (L) (1L=1000mL) male = 0. 8926 Mal x 0.3537 x - 0.3157 mol - HBroy → Perbronic acid OH o=Br = 0 → Only lacidic H (12) H2O -> 261) + 2(X) = 0 x = -1 - ---- orygen's Oxidation state