Chemistry
CH 11 Honors Chemistry PreTest
NAME ______
DATE ______
PERIOD______
1. IF THE DENSITY OF CARBON TETRACHLORIDE IS 1.36 G/DM3 AT A PRESSURE OF
784.0 MMHG. CALCULATE THE TEMPERATURE IN °C OF THE GAS. (1.15 x103 C)
2. OXYGEN HAS A DENSITY OF 0.98 G/DM3 AT 75.0 KPA AND 15.0 °C. CALCULATE
THE NEW DENSITY OF OXYGEN AT A PRESSURE OF 100.0 KPA AND 85.0 °C. (1.1 x100 g/dm3)
3. A GAS OCCUPIED 850.0 CM3 AT A PRESSURE OF 778.5 MMHG AND A
TEMPERATURE OF 35.0°C. SEVERAL DAYS LATER IT WAS MEASURED AT SP AND A
VOLUME OF 575.0 CM3. WHAT TEMPERATURE IN °C WILL THE GAS OCCUPY
UNDER THESE NEW CONDITIONS. (-6.96 x101 C)
4. FROM THE FOLLOWING UNBALANCED EQUATION, N2 + H2= NH3,
CALCULATE THE MASS OF H2 AT 98.0 KPA AND 25.0 °C GIVEN 250.0 CM3 OF NH3
AT STP. (3.35 x10-2 g)
5. CALCULATE THE MOLES OF STEAM NEEDED TO REACT WITH IRON TO PRODUCE
Fe3O4 AND 250 CM3 OF HYDROGEN AT 750 MMHG AND -20.0 °C. (1.2 x10-2 n)
6. AN UNKNOWN GAS HAS A DENSITY OF 0.855 G/DM3 AT 105.0 KPA AND ST.
CALCULATE THE MOLAR MASS OF THE GAS UNDER THESE CONDITIONS.(1.85 x101 g/n)
7. CALCULATE THE PRESSURE OF CARBON DIOXIDE GAS PRODUCED WHEN
23.5 G OF C3H8 BURN AT A TEMPERATURE OF 125.0 °C WITH A VOLUME OS 750.0 ML. (7.06 x103 kPa)
8. IF 46.0 G OF C7H14 REACT WITH 105 DM3 OF O2, CALULATE THE VOLUME (DM3)
OF CO2 PRODUCED AT STP. (7.00 x101 dm3)
9. A 350 CM3 SAMPLE OF OXYGEN IS COLLECTED OVER WATER AT
70.0 °C. WHAT VOLUME (DM3) WOULD THE DRY GAS OCCUPY AT
103.5 KPA AND A TEMPERATURE OF 102.0 °C IF THE GAS IS
COLLECTED ORIGINALLY AT A PRESSURE OF 740.0 MMHg? (2.5 x10-1 dm3)
10.WHAT VOLUME (DM3) OF HYDROGEN WILL BE PRODUCED WHEN ALUMINUM
REACTS WITH 1500 CM3 OF NITRIC ACID AT STP? (7.5 x10-1 dm3)
11. WHAT IS THE MOLECULAR MASS OF SULFUR DIOXIDE IF 300.0 CM3 OF THE
GAS HAS A MASS OF 0.855 G AT STP. (6.38 x101 g/n)
12. CALCULATE THE NUMBER OF MOLES OF 750.0 CM3 OF OXYGEN AT 27°C AND
99.0 KPA. (3.0 x10-2 n)
13. CALCULATE THE VOLUME OF 3.00 MOLES OF H2 AT 24°C AND 100.5 KPA. (7.4 x101 dm3)
14. CALCULATE THE MASS OF 500.0 CM3 OF CARBON DIOXIDE AT A PRESSURE
OF 105.5 KPA AND 40.0 °C. (8.92 x10-1 g)
15. CALCULATE THE DENSITY OF NH3 AT A PRESSURE OF 100.5 KPA AND 37.0°C. (6.63 x10-1 g/dm3)
16. THE DENSITY OF A SAMPLE OF PHOSPHORUS TRIFLUORIDEIS 3.90
G/DM3. WHAT IS THE MOLECULAR MASS OF THIS GAS AT STP. (8.73 x101 g/n)
17. ALUMINUM REACTS WITH HYDROCHLORIC ACID TO PRODUCE ALUMINUM
CHLORIDE AND HYDROGEN GAS. WHAT MASS OF HYDROCHLORIC ACID
REACTS WITH 87.7 G OF ALUMINUM DISSOLVED IN EXCESS HYDROCHLORIC
ACID? 2 Al + 6 HCl = 2 AlCl3 + 3H2 (3.56 x102 g)
18. A GAS IS CONFINED IN A CYLINDER WITH A MOVABLE PISTON AT ONE
END. WHEN THE VOLUME OF THE CYLINDER IS 760.0 CM3 THE PRESSURE
OF THE GAS IS 125.0 kPa. WHEN THE CYLINDER VOLUME IS REDUCED
TO 450.0 CM3, WHAT IS THE PRESSURE? (2.111 x102 kPa)
19. A SAMPLE OF A GAS HAS A MASS OF 1.248 G AND OCCUPIES 300.0 CM3
AT STP. WHAT IS THE MOLECULAR MAS OF THIS GAS? (9.314 x101 g/n)
20. HOW MANY MOLES OF A GAS WILL A 1250 CM3 FLASK HOLD AT 35.0 C
AND A PRESSURE OF 95.4 kPa? (4.66 x10-2 n)
21. WHAT MASS OF MAGNESIUM WILL REACT WITH EXCESS HYDROCHLORIC ACID
TO PRODUCE 575 CM3 OF HYDROGEN AT STP? (6.24 x10-1 g)
Mg + 2 HCl = MgCl2 + H2
22. A 79.9 CM3 SAMPLE OF OXYGEN IS COLLECTED OVER WATER AT 24 C.
WHAT VOLUME WOULD THE DRY GAS OCCUPY AT STP IF THE GAS IS
COLLECTED ORIGINALLY AT A PRESSURE OF 98.5 kPa? (6.9 x101 cm3)
23. A GAS HAS A DENSITY OF 3.472 G/DM3 AT 95.0 kPa AND A
TEMPERATURE OF 27.0 C. DETERMINE ITS DENSITY AT STP. (4.07 x100 g/dm3)
24. HOW MANY GRAMS OF CARBON DIOXIDE ARE FORMED IF 10.0 G OF CARBON
BURNED IN 20.0 DM3 OF OXYGEN? (3.67 x101 g)
25. WHAT WILL BE THE DENSITY OF IODINE AT 125.0 kPa AND 23 C? (1.3 x101 g/dm3)
26. A GAS OCCUPIED 550.0 CM3 AT A PRESSURE OF 99.5 kPa AND A
TEMPERATURE OF 21 C. SEVERAL DAYS LATER IT WAS MEASURED AT A
PRESSURE OF 97.8 kPa AND A TEMPERATURE OF 15 C. WHAT VOLUME
DID THE GAS OCCUPY UNDER THESE NEW CONDITIONS? (5.5 x102 cm3)
27. HOW MANY DM3 OF CHLORINE GAS ARE REQUIRED TO PRODUCE 50.0 CM3
OF HYDROGEN CHLORIDE GAS? (2.50 x10-2 dm3)
28. CALCIUM CARBIDE (CaC2) REACTS WITH WATER TO PRODUCE CALCIUM
HYDROXIDE (Ca(OH)2) AND ACETYLENE (C2H2). WHAT VOLUME OF THE
GAS AT STP COULD BE PRODUCED FROM THE REACTION OF 50.0 G OF
CALCIUM CARBIDE AND 50.0 G OF WATER? (1.75 x101 dm3)
29. A BALLOON WILL BURST AT A VOLUME OF 2.0 DM3. IF THE GAS IN A
PARTIALLY FILLED BALLOON OCCUPIES O.75 DM3 AT A TEMPERATURE OF
21 C AND A PRESSURE OF 99.0 kPa, WHAT IS THE TEMPERATURE IN K
AT WHICH IT WILL BURST IF THE PRESSURE IS 101.0 kPa AT THE
TIME IT BREAKS? (8.0 x 10 2 K)
30. USING THE EQUATION Fe2O3 + 3 CO = 2 Fe + 3 CO2, DETERMINE HOW
MANY MOLES OF IRON AT STP CAN BE PRODUCED FROM 23.5 CM3 OF
CARBON MONOXIDE. (6.99 x10-4 n)
31. DETERMINE THE MASS OF 500.0 CM3 OF CHLORINE GAS AT A PRESSURE
OF 89.5 kPa AND A TEMPERATURE OF 20.0 C. (1.30 x100 g)