Test 3 - CH 6-8

Question 1

How to find mole ratio

Answer 1

From coefficients of elements

Question 2

How to find mole A from B

Answer 2

Coefficient a/coefficient b

Question 3

Find mass of a substance based on mass of another substance

Answer 3

Convert from grams to moles back to grams

Question 4

How to find limiting reactant

Answer 4

Assume one is the LR and find mole of product using assumed LR, do that with both reactants

Question 5

Mass of excess reactant remaining

Answer 5

Given mass - mass used

Question 6

Percent yield

Answer 6

= actual/theoretical x 100

Question 7

Heat formula

Answer 7

q = mcAT, q system = - q surroundings

Question 8

Bomb calorimeter

Answer 8

q reaction = - q calorimeter, q calorimeter = cAT

Question 9

Relationship between wavelength and frequency

Answer 9

(frequency) (wavelength) = c (speed of light), E = hv, or E = hc/v, inversely proportional

Question 10

Relationship between wavelength and energy

Answer 10

Inversely proportional

Question 11

Relationship between frequency and energy

Answer 11

Directly proportional

Question 12

Where are electrons kept

Answer 12

Orbitals

Question 13

4 quantum numbers

Answer 13

s, p, d, f

Question 14

Ionization energy trend

Answer 14

Increase left to right, decrease top to bottom

Question 15

Electronegativity trend

Answer 15

Increase left to right, decrease top to bottom

Question 16

Atomic radius size trend

Answer 16

Decrease left to right, increase top to bottom