Honors Chemistry - Unit 4 | Questions With Complete Solutions 100% Verified | Latest Update Graded A+

Honors Chemistry - Unit 4 | QUESTIONS WITH COMPLETE SOLUTIONS 100% VERIFIED| LATEST
UPDATE GRADED A+



What is the molar mass of Ca3(PO4)2?



A) 310 grams/mole

B) 154 grams/mole

C) 67 grams/mole

D) 83 grams/mole

E) 115 grams/mole A



If the density of diatomic gas at STP is 1.43 g/L, what is the gram molecular mass of the gas?



A) 14.3 g

B) 32.0 g

C) 48.0 g

D) 64.3 g

E) 224 g B



From 2 moles of KClO3, how many liters of O2 can be produced at STP by decomposition of tall
the KClO3?



A) 11.2

B) 22.4

C) 33.6

D) 44.8

,E) 67.2 E



How many atoms are in one mile of water?

A) 3

B) 54

C) 6.02*10^23

D) 2(6.02*10^23)

E) 3(6.02*10^23) E



Four grams of hydrogen gas at STP contains



A) 6.02*10^23 atoms

B) 12.04*10^23 atoms

C) 12.04*10^46 atoms

D) 1.2*10^23 molecules

E) 12.04*10^23 molecules E



How many liters of O2 can be produced by completely decomposing 2.00 moles of KClO3?



A) 11.2

B) 22.4

C) 33.6

D) 44.8

E) 67.2 E



If the molecular mass of NH3 is 17, what is the density of this compound at STP?

, A) 0.25 g/L

B) 0.76 g/L

C) 1.52 g/L

D) 3.04 g/L

E) 9.11 g/L B



How many grams of sulfur are present in 1 mole of H2SO4?



A) 2

B) 32

C) 49

D) 64

E) 98 B



What is the approximate mass, in grams, of 1 liter of nitrous oxide, N2O at STP?



A) 1

B) 2

C) 11.2

D) 22

E) 4 B



What is the molar mass of CaCO3



A) 68 g/mol