Name: Multiple choice (1 thru 4): Select the ONE best answer (1 point each 1. Wh

Question

Name: Multiple choice (1 thru 4): Select the ONE best answer (1 point each 1. Which of the following forms of energy would cause bonds break? to a. microwave radiation c. ultraviolet radiation b. infrared radiation d. visible radiation 2. The molar mass of coal (c135H9609NS) is? a. 1,620 g/mo b. 1,906 g/mol c. 3,094 g/mol d. 1,286 g/mol 3. Which of the following molecules has a linear shape? a. Ozone O c. Water H2O b. Carbon dioxide CO2 d. Methane -CH4 4. Which of the following molecules has No covalent double bonds? a. oxygen O2 c. Ethy nee -C2H2 b. Hydrogen sulfide H2S d. Carbon dioxide CO2 Short answers (1 point each) 5. A refinery uses a distillation process to separate hexane (C6H14) and decane (C10Hz2). What physical property is used in the distillation process that causes the separation? 6. Why does the burning of coal produce NO2 and So? 7. Name one renewable fuel. 8. Filling up your car with gas, you notice that the pump at the gas station is labeled 87 and E10. What is the meaning of these labels?

Explanation / Answer

1)

Infrared can cause molecules to vibrate but ultra violet can break the bond

Answer: c

2)

Molar mass of C135H96O9NS,

MM = 135*MM(C) + 96*MM(H) + 9*MM(O) + 1*MM(N) + 1*MM(S)

= 135*12 + 96*1 + 9*16 + 1*14 + 1*32

= 1906 g/mol

Answer: b

3)

CO2 is linear in shape

The structure of CO2 is:

O=C=O

Answer: b

I am allowed to answer only 1 question at a time

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