Math - Units and Logs

Question 1

tera (T)

Answer 1

10^12

Question 2

giga (G)

Answer 2

10^9

Question 3

mega (M)

Answer 3

10^6

Question 4

kilo (K)

Answer 4

10^3

Question 5

hecto (h)

Answer 5

10^2

Question 6

deka (da)

Answer 6

10^1

Question 7

deci (d)

Answer 7

10^-1

Question 8

centi (c)

Answer 8

10^-2

Question 9

milli (m)

Answer 9

10^-3

Question 10

micro (u)

Answer 10

10^-6

Question 11

nano (n)

Answer 11

10^-9

Question 12

pico (p)

Answer 12

10^-12

Question 13

1 mile in feet

Answer 13

1 mile = 5280 feet

Question 14

1 Calorie (Cal-uppercase) in cal-lowercase

Answer 14

1 Cal/Calorie = 1000 cal

Question 15

1 calorie (cal) in Joules

Answer 15

1 cal/calorie = 4.184 J

Question 16

1 electron-volt (eV) in joules

Answer 16

1 electron-volt (eV) = 1.602 * 10^-19 J

Question 17

1L in ounces

Answer 17

1L = 33.8 ounces (oz)

Question 18

1 pound (lb) in N

Answer 18

1 pound (lb) = 4.45 N

Question 19

1 atomic mass unit (amu) in kg

Answer 19

1 atomic mass unit (amu) = 1.6 * 10^-27 kg

Question 20

Sound level formula

Answer 20

20 dB = 10 log (I / Io)

2 = log (I / Io)

10^2 = I / Io

Reference Sound Intensity (Io) = 10-12 W/m²

Question 21

exponential decay

Answer 21

Question 22

arrhenius eq for activation energy

Answer 22

Question 23

gibbs free energy delta G in e

Answer 23

k=e^(-deltaGstandard/RT)

Question 24

ph in [concentration]

Answer 24

Question 25

Henderson Hasselbach

Answer 25

where HA is the acid and A- is the conjugate base (acid with one less H+)

Question 26

gibbs free and Ecell

Answer 26

Question 27

Q and Ecell

Answer 27

Question 28

electrodeposition

Answer 28

the number of moles of element being deposited on a plate

where mol M is the amount of metal ion being deposited at a specific electrode, l is current, t is time, n is the number of electron equivalents for a specific metal ion, and F is the Faraday constant. This equation can also be used to determine the amount of gas liberated during

Question 29

delta G standard vs. non-standard

Answer 29

If E° cell is positive, In Keq is positive. This means that Key must be greater than one and that the equilibrium lies to the right (products are favored).

where AG is the free energy change under nonstandard conditions, AGo is the free energy change under standard

Question 30

delta G, enthaply entropy

Answer 30

Question 31

density of water

Answer 31

ρwater = 10^3 kg/m^3