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General Chemistry > QR Formula Sheet > Flashcards

QR Formula Sheet Flashcards

1
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A
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12
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13
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14
Q

1 mile

A

5280 ft

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15
Q

1 foot

A

12 inches

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16
Q

1 yard

A

3 ft

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17
Q

1 meter

A

1.1 yards

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18
Q

1 kilogram

A

2.2 pounds

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19
Q

1 pound

A

16 ounces= 454 grams

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20
Q
A
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21
Q

of

A

multiplication

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22
Q

equal to

A

equal sign

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23
Q

dilutions

A

c1v`=c2v2

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24
Q

distance

A

(rate)(time)

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25
Q

average rate

A

total distance traveled/total time

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26
Q

when 2 things travel toward each other

A

add the 2 velocities together

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27
Q

Two trains are 135 miles apart. Train 1
is heading east at 50 mph. Train 2 is heading
west at 40 mph. How long before the trains cross
paths?

A
28
Q

Compound Interest

A
29
Q

If the interest is compounded quarterly (every 3 months), and the length of the investment is one year, (t = 1 year) and (n = 4).

A
30
Q

Simplified Interest Formula

A

When the interest is compounded one time per
unit “t” (n =1).
Example: If the interest is compounded yearly, and
the length of the investment is five years,
(t = 5 years) and (n = 1).

31
Q

∪ =

A

union. Includes all data but excludes
duplicate values.

Example: A = {1,2,3} and B = {1,3,4}
A ∪ B= {1,2,3,4}

32
Q

∩ =

A

intersection. Includes only data that exists in both A and B.

Example: A = {1,2,3} and B = {1,3,4}
A ∩ B= {1,3}

33
Q

Combined Work Questions

A
34
Q

If Tom gets a job done in 4 hours (t1)
and Jerry gets it done in 3 hours (t2), how many hours does it take to get the job done working
together (ttotal)?

A
35
Q

Use combination when the order

A

DOES NOT MATTER

36
Q

use permutation when the order

A

does matter

37
Q

combination formular

A

n = number of objects from which you can
choose
k = number of objects to be chosen

38
Q

permutation formula

A

n = number of objects from which you can
choose
k = number of objects to be chosen

39
Q

rolling 2 dice

A

total number of possible combinations = (6)(6) = 36

40
Q

What is the probability of rolling two
dice and having the two numbers add to 4?

A
41
Q

How many ways can the letters in
APPALOOSA be arranged?

A
42
Q

A standard deck has:

A
43
Q

What is the probability of pulling 3
spades in a deck without replacement?

A
44
Q

mean

A

average

45
Q

medianb

A

middle number of a set of data (remember to order them numerically and then find the middle number)

46
Q

mode

A

number that occurs most often in a set

47
Q

standard deviation

A

measure of how spread out numbers are

48
Q

variance

A

average of the squared differences from the mean

49
Q

z score

A

measure of standard deviation

50
Q

The standard deviation of {10, 15, 20, 25, 30} can be best approximated by which of the following?

A
51
Q

In a normal distribution, 68% of the data fall within

A

1 SD of the mean

52
Q

95% of
the data fall within

A

2 standard deviations of the mean

53
Q

99.7% of the data fall within

A

3 SD of the mean

54
Q

area of circle

A
55
Q

area of triangle

A
56
Q

area of sphere

A
57
Q

area of cylinder

A
58
Q

area of paralleogram

A
59
Q

volume of sphere

A
60
Q

volume of cylinder

A
61
Q

[Line Formulas]

A
62
Q

parallel lines

A

Slopes are equivalent (ex: 2 and 2)

63
Q

[Perpendicular lines]

A

Slopes are negative
reciprocal (ex: 1⁄4 and -4)

64
Q

[Distance between two points]

A
65
Q

Quadratic Equations

A
66
Q

[Vertex of a parabola]

A
67
Q
A

General Chemistry (3 decks)

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