Semester one year one

Question 1

What is mass?

Answer 1

A measure of how much matter is in an object.
SI is kilograms

Question 2

What is molecular mass?

Answer 2

The mass of one mole of a molecule.
Measured in Daltons

Question 3

What are Daltons?

Answer 3

One Dalton is the mass of one proton.
Used to give the relative molecular mass.

Question 4

What is the relationship between the molecular mass in grams and Daltons?

Answer 4

Given in grams from a periodic table the mass is often of one mole of molecules.
Given in Daltons the mass is often of one molecule.

Question 5

What is the mass of one proton?

Answer 5

1.66x10 to the power of -24.

Question 6

What is molecular mass also referred to as?

Answer 6

Molecular weight (MW)
formular (molecular) weight F[M]W

Question 7

What is the relationship between Daltons and mole?

Answer 7

The compounds mass in Daltons is the same as the mass in grams of one mole of the compound.

Question 8

How many litres are in 1 dm3?

Answer 8

1 litre.

Question 9

How many litres are in 1m3?

Answer 9

1,000 litres

Question 10

How many mm3 are in one litre?

Answer 10

1x10^9 mm3

Question 11

What is molarity?

Answer 11

The number of moles in one litre
M

Question 12

How is percent w/v used to measure concentration?

Answer 12

To give a certain weight/volume over another weight/volume.

Question 13

What units are used with percents w/v for concentration?

Answer 13

Volume is in ml
Mass is in grams.
Remember the standard second is per 100ml/grams.

Question 14

What is meant by 1ppm w/v?

Answer 14

1 gram per 1,000,000 ml

Question 15

What is the traingle equation link moles, mass and MW?

Answer 15

Mass = Moles x MW

Question 16

What is the triangle linking concentration, mass and volume?

Answer 16

Mass = concentration x volume.

Question 17

What is the equation linking molarity, moles and volume?

Answer 17

moles = molarity x volume

Question 18

What is dimensional analysis?

Answer 18

The balancing and matching of units within equations.

Question 19

What is meant by kilo?

Answer 19

x10^3 the standard
K

Question 20

What is meant by deci?

Answer 20

x10^-1 the standard
d

Question 21

What is meant by centi?

Answer 21

x10^-2 the standard
c

Question 22

What is meant by mili?

Answer 22

x10^-3 the standard
m

Question 23

What is meant by micro?

Answer 23

x10^-6 the standard
μ

Question 24

What is meant by nano?

Answer 24

x10^-9 the standard
n

Question 25

What is meant by pico?

Answer 25

x10^-12 the standard p

Question 26

What is meant by femto?

Answer 26

x10^-15 the standard f

Question 27

What is the equation linking the dilution factor to the old and new volume?

Answer 27

new vol = DF x old vol.

Question 28

What equation is the backbone to dilutions?

Answer 28

C1 V1 = C2 V2

Question 29

What is a nomogram?

Answer 29

A diagram that can be used to estimate one of body mass, height or body surface area when the other two variables are known.

Question 30

How is a nomogram used?

Answer 30

Plot the two known variables onto the graph, connect with a line. Extrapolate over the unknown variable to estimate its value.

Question 31

What units can be used in a nomogram?

Answer 31

Body surface area is in meters squared. Hieght is in cm or inches. Weight is in Kg or pounds.

Question 32

How can body surface area be calculated without a nomogram?

Answer 32

BSA = W^0.425 x H^0.725 x 0.007184

Question 33

What are the different units from kilo downwards

Answer 33

Kilo, x, deci, centi, milli, micro, nano, pico, fecto King David can’t manage Mary Nightingales purple festival