Which gas has molecules with the slowest average molecular...

This preview shows page 1 - 3 out of 7 pages.

Exam 2 1307 F2019-A.pdf

1 )   Which gas has molecules with the slowest average molecular speed at 25 ° C ?
A ) Kr
B ) CH 4
C ) Ar
D ) N 2
E ) CO 2
2 )   Which of the following is a weak acid ?
Get answer to your question and much more
3 )   Steam ( H 2 O ( g ) ) has a specific heat capacity of 2.01 J/g°C. Calculate q when 5.25 kg of steam is cooled from 200 ° C to 150° C.
Get answer to your question and much more
4 )   Assuming ideal behavior , what is the density of argon gas at STP ?
Get answer to your question and much more
5 )   Ammonia will react with fluorine to produce dinitrogen tetrafluoride and hydrogen fluoride ( used in production of aluminum , in uranium processing , and in frosting of light bulbs ) . 2 NH 3 ( g ) + 5F 2 ( g ) → N 2 F 4 ( g ) + 6 HF ( g ) How many moles of HF are expected if 42.2 mol of F 2 react completely with excess NH 3 ?
A ) 50.6
B ) 253 .
C ) 42.2
D ) 211 .
E ) 35.2
6 )   Which represents the definition of pressure
Get answer to your question and much more
7 )   Determine the specific heat capacity of a newly developed alloy of nickel metal , given the following calorimetry results . When a 85.66 g sample of the alloy , initially at 90.0 ° C , is dropped into a coffee cup calorimeter containing 50.0 g of water at a temperature of 10.0 ° C , the alloy and water reach 25.0 ° C at equilibrium . ( Assume no heat losses , the density of water is 1.00 g/mL and the specific heat capacity of water is 4.18 J/g · ° C. )
Get answer to your question and much more
8 )   What are the spectator ions in the reaction of HCl ( aq ) with Ag NO 3 ( aq ) ?
Get answer to your question and much more
3 -   9 ) What volume of a 0.442 M NaOH solution is needed to neutralize 65.0 m L of a 0.296 M solution of HNO 3 ?
A ) 21.8 mL
B ) 8.71 mL
C ) 87.1 mL
D ) 43.5 mL
E ) 174 mL
9 )   What volume of a 0.442 M NaOH solution is needed to neutralize 65.0 m L of a 0.296 M solution of HNO 3 ?
Get answer to your question and much more
10 )   A gas sample contains 4.00 g of CH 4 and 2.00 g of He . What is the volume of the sample at STP ?
Get answer to your question and much more
11 )   Assuming no heat loss , what final temperature is expected after 50.0 g of water at 20.0 ° C is mixed with 30.0 g of water at 80.0 °C ? ( The specific heat of water is 4.18 J/g K )
Get answer to your question and much more
12 )   Which element is oxidized in the following reaction ? Cu + 2H 2 SO 4 → CuSO 4 + SO 2 + 2H 2 O
A ) H
B ) Cu
C ) H 2 O
D ) O
E ) S
13 )   Which one of the following compounds is insoluble in water ?
Get answer to your question and much more
15 )   The decomposition reaction of hydrogen peroxide ( H 2 O 2 ) yields oxygen gas and water . In an experiment , the reaction yielded 75.3 m L of gas collected over water at 25 ° C and 742 torr . What mass of oxygen gas was collected ? ( P water = 24 torr at 25 ° C )
Get answer to your question and much more
16 )   In which process is Δ H = Δ E ?
Get answer to your question and much more
CHEM 1307 Fall 2019 Midterm Exam #2 MULTIPLE CHOICE. Select the one choice that best completes the statement or answers the question. 1) Which gas has molecules with the slowest average molecular speed at 25°C? A) Kr B) CH 4 C) Ar D) N 2 E) CO 2
2) Which of the following is a weak acid?
3) Steam (H 2 O (g)) has a specific heat capacity of 2.01 J/g°C. Calculate q when 5.25 kg of steam is cooled from 200°C to 150°C.
4) Assuming ideal behavior, what is the density of argon gas at STP?
5) Ammonia will react with fluorine to produce dinitrogen tetrafluoride and hydrogen fluoride (used in production of aluminum, in uranium processing, and in frosting of light bulbs). 2NH 3 ( g ) + 5F 2 ( g ) N 2 F 4 ( g ) + 6HF( g How many moles of HF are expected if 42.2 mol of F 2 react completely with excess NH 3 ? ) A) 50.6 B) 253. C) 42.2 D) 211. E) 35.2
1
6) Which represents the definition of pressure
7) Determine the specific heat capacity of a newly developed alloy of nickel metal, given the following calorimetry results. When a 85.66 g sample of the alloy, initially at 90.0°C, is dropped into a coffee cup calorimeter containing 50.0 g of water at a temperature of 10.0°C, the alloy and water reach 25.0°C at equilibrium. (Assume no heat losses, the density of water is 1.00 g/mL and the specific heat capacity of water is 4.18 J/g · °C.)

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture

  • Left Quote Icon

    Student Picture