# CHE and PHY Math

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1. Celsius equation for Fahrenheit
°C= 5/9 (°F-32
2. Celsius equation for Kelvin
°C= K-273
3. Basic Units of Measurement
• Mass ⇨  grams
• Distance ⇨ meters
• Volume ⇨ liters
4. Area equation
Area= distance × distance
5. Volume equation
Volume= length × width × height
6. Density equation
• Density= mass
•               volume
7. Mega-
• Abbreviation: M
• Power of 10: 106
8. Kilo-
• 1000
• Abbreviation: K
• Power of 10: K3
9. Deci-
• 0.1
• Abbreviation: D
• Power of 10: 10-1
10. Centi-
• 0.01
• Abbreviation: C
• Power of 10: 10-2
11. Milli-
• 0.001
• Abbreviation: m
• Power of 10: 10-3
12. Micro-
• 0.000001
• Abbreviation: μ
• Power of 10: 10-6
13. Nano-
• 0.000000001
• Abbreviation: N
• Power of 10: 10-9
14. Density equation
• density= mass
•               volume
15. 1 Km=m?
1000m
16. Useful units of conversion
• 1 inch = 2.54 cm
• 1 foot = 0.305 m
• 1 mile = 1.609 km
• 1 mph = 0.447 m/s
• 1 m = 39.37 in
• 1 km = 0.621 miles
• 1 m/s = 2.24 mph
17. Common SI Units
• Quantity:     Unit:         Abbreviation:
• time            second      s
• length         meter        m
• mass           kilogram    kg
18. 1 Mile=ft.?
5280 ft.
19. 1 ft.=inch?
12 inches
20. 1 yard=ft.?
3 ft.
21. 1 yard=in.?
36 inches
22. 1 L= mL?
1,000 Milliliters
23. 1 cm3=mL?  (cubic centimeter)
1 mL
24. 1 dm3=L?  (cubic decimeter)
1 Liter
25. 1 pound= g?
454 grams
26. 1m=in.?
39.37 inches
27. 1 m/s=mph?
2.24mph
28. Atomic mass unit abbreviation
"u" = 1.661  X 10-10
29. What is Avogrado's number? (represents number of atoms or molecules in an element or compound)
6.022 X 1023
30. 1mol= weight of?
atomic weight (g) on periodic table
31. To find # of atoms/molecules use?