Decoding the Time Message: Unraveling the Meaning Behind "15.m.=.???.pm
15
m = ??? pm
1) Algebraic (‘Marine’ way)
Doc’s story about his HS chem teacher
Divide and
conquer,
maggot !
2 ways to convert between metric units
2)
Factor-label (commonly taught by high
school teachers)
15
m = ??? pm
Done two ways
on blackboard
Guided practice Unit conversions
(via factor-label & Algebraic)
Convert 45.7 kg to g
Convert 0.73 mL to
L
Convert 7.2 kg/L to mg/
L
4.57*10
4
g
730
L =7.3*10
2
L
7.2 mg/
L
answers
Convert 100 ps to ns
100 ps =0.1 ns
Convert 100 pm to nm
A.
0.01 nm
B.
0.001 nm
C.
1 nm
D.
0.1 nm
E.
No clue…help !
Convert 5000 kg to Mg
A.
5 Mg
B.
50 Mg
C.
0.5 Mg
D.
500 Mg
E.
Still no clue…need
nap
INTRO TO MOLES:
Every science involves counting
Astronomers count
……
Animal
biologists
count
…….
Bacteriologists
count
…..
Chemists
count…….
Doc asks another dumb question:
How long would it take the current, fastest
computer in the world (The Chinese Tihane-
2 as of June 2013 ) to count all the molecules
of water in a teacup assuming it counted at
its
maximum
processor rate =
34,000,000,000,000,000 molecules/second
(=3400 THz=3.4*10
6
GHz
1
) ?
Answer: ~ 3.2 years
1
~ 1 million times faster than a typical laptop
How do chemists count atoms
and molecules without actually
having to count them ???
read
Chapter 3:
sections 3.1-3.4
In this intriguing quest, delve into the mysterious message "15.m.=.???.pm" and unlock its hidden significance. Join us as we analyze the cryptic code, decipher the time puzzle, and unveil the secrets concealed within this enigmatic statement. Prepare to unravel the curious conundrum of time expressed in a unique format that beckons exploration and discovery.
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Presentation Transcript
2 ways to convert between metric units 1) Algebraic ( Marine way) Doc s story about his HS chem teacher Divide and conquer, maggot !
2) Factor-label (commonly taught by high school teachers)
15 m = ??? pm Done two ways on blackboard
Guided practice Unit conversions (via factor-label & Algebraic) answers 4.57*104 g Convert 45.7 kg to g Convert 0.73 mL to L 730 L =7.3*102 L Convert 100 ps to ns 100 ps =0.1 ns Convert 7.2 kg/L to mg/ L 7.2 mg/ L
Convert 100 pm to nm A. 0.01 nm B. 0.001 nm C. 1 nm D. 0.1 nm E. No clue help ! 20% 20% 20% 20% 20% 0.1 nm 1 nm 0.01 nm 0.001 nm No clue help !
Convert 5000 kg to Mg A. 5 Mg B. 50 Mg C. 0.5 Mg D. 500 Mg E. Still no clue need nap 20% 20% 20% 20% 20% 5 Mg 0.5 Mg 50 Mg 500 Mg Still no clue need nap
INTRO TO MOLES: Every science involves counting Astronomers count Animalbiologistscount . Bacteriologistscount .. Chemists count .
Doc asks another dumb question: How long would it take the current, fastest computer in the world (The Chinese Tihane- 2 as of June 2013 ) to count all the molecules of water in a teacup assuming it counted at its maximum processor rate = 34,000,000,000,000,000 molecules/second (=3400 THz=3.4*106 GHz1 ) ? Answer: ~ 3.2 years 1 ~ 1 million times faster than a typical laptop
How do chemists count atoms and molecules without actually having to count them ??? http://t2.gstatic.com/images?q=tbn:ANd9GcTIy_ERVxFIOF2NsBNlSEUDApyXhu2BXMlXWryX7HwL5JBaQA4Y read Chapter 3: sections 3.1-3.4
