Test 3 Chemistry

Question 1

kinetic energy formula

Answer 1

KE = (mv^2)/ 2
m = kg
v = m/(s^2)

Question 2

potential energy formula

Answer 2

PE = mgh
m= kg
g = gravity, 9.8 m/(s^2)
h = height

Question 3

joule formula

Answer 3

1J= (kg*m^2)/(s^2)

Question 4

1 cal = ___ J

Answer 4

4.184

Question 5

work formula

Answer 5

(work) = (force)(distance)

Question 6

force formula

Answer 6

force = (mass)(gravity)
gravity = 9.8 m/(s^2)

idk

Question 7

ΔE when it’s positive and negative

Answer 7

positive –> SYSTEM gains energy
negative –> SYSTEM loses energy

Question 8

q when it’s positive and negative

Answer 8

positive –> SYSTEM gains heat
negative –> SYSTEM loses heat

Question 9

work/w when it’s positive and negative

Answer 9

positive –> work is done ON the SYSTEM
negative–> work is done BY the SYSTEM

Question 10

enthalpy (ΔH) =

Answer 10

q/n

Question 11

heat capacity formula

Answer 11

q/ΔT

Question 12

specific heat capacity formula

Answer 12

q/mΔT

Question 13

molar heat capacity formula

Answer 13

q/nΔT

Question 14

qrxn =

Answer 14

-qcal

Question 15

another way to get molar heat capacity is the multiply the specific heat capacity with…

Answer 15

the molar weight of the element