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Quantity	Symbol	Traditional Units	SI Units
Acceleration of gravity	g	980.6 cm/s	9.806 m/s
Atomic mass unit (1/12th of the mass of 12C atom)	amu	1.6606 X 10-24 g	1.6606 X 10-27 kg
Avogadro constant	Na	6.022 X 1023 particles/mol	6.022 X 1023 particles/mol
Boltzmann constant	k	1.3807 X10-16 erg/K	1.3807 X 10-23 J/K
Charge-to-mass ratio of electron	e/m	1.7588 X 108 Coulomb/g	1.7588 X 1011 C/kg
Electronic charge	e	1.60219 X 10-19 Coulomb 4.8033 X 10-19 esu	1.60219 X 10-19 C
Faraday constant	F	96,487 C·eq-1	96,487 C·mol-1
Gas constant	R	1.987 cal/mol. K	8.3145 kPa dm3/ mol .K 8.3145 J/ mol.K
Molar volume (STP)	Vm	22.710981 L/mol	22.710981 X 10-3 m3/mol 22.710981 dm3/ mol
Neutron rest mass	mn	1.67495 X 10-24 g 1.008665 u	1.67495 X 10-27 kg
Proton rest mass	mp	1.6726 X 10-24 g 1.007277 u	1.6726 X 10-27 kg
Electron rest mass	me	9.10952 X 10-28 g	9.10952 X 10-31 kg
Speed of light (in vacuum)	c	2.9979 X 10-10 cm/s	2.9979 X 108 m/s
Plank constant	h	6.6262 X 10-27 ergs	6.6262 X 10-34 J.s

Physical Dimension	Symbol for Quantity	SI Symbol	Name of SI Units
Length	l	m	meter
Mass	m	kg	kilogram
Time	t	s	second
Electric current	I	A	ampere
Thermodynamic temperature	T	K	Kelvin
Amount of substance	n	Mole	mole
Luminous intensity	Iv	cd	candela

Multiple	Prefix	Symbol
10-15	Femto	f
10-12	Pico	p
10-9	Nano	n
10-6	Micro	µ
10-3	Milli	m
10-2	Centi	c
10-1	Deci	d
10	Deca	da
102	Hecta	h
103	Kilo	k
106	Mega	M
109	Giga	G
1012	Tera	T
1015	Peta	P

Name	pH range	Color Change
Thymol Blue	1.2-2.8	Red to Yellow
Bromophenol Blue	3.0-4.6	Yellow to Blue
Congo Red	3.0-5.0	Blue to Red
Bromophenol Blue	3.0-4.5	Yellow to Blue
Methyl Orange	3.2-4.2	Red to Yellow/Orange
Bromocresol Green	3.8-5.4	Yellow to Blue
Methyl Red	4.2-6.2	Pink to Yellow
Methyl Red Hydrochloride	4.2-6.2	Pink to Yellow
Rosolic Acid	5.0-8.0	Mow to Red
Bromocresol Purple	5.2-6.8	Yellow to Purple
Alizarin	5.8-7.2	Yellow to Red
Bromothymol Blue	6.0-7.6	Yellow to Blue
m-Nitrophenol	6.8-8.6	Colorless to Yellow
Phenol Red	6.8-8.2	Yellow to Red
Cresol Red	7.0-8.8	Yellow to Violet Red
Thymol Blue	8.0-9.2	Yellow to Blue
Phenolphthalein	8.0-10.0	Colorless to Red
Thymolphthalein	8.8-10.5	Colorless to Blue
Alizarin	1.0-13.0	Red to Purple
Acid Fuchsin	12.0-14.0	Red to Colorless

	Specific Gravity (20°C)	Molarity (M)	Qualtity required in ml to make 1 liter 1 Molar Solution	Normality (N)	Quantity required in ml to make 1 liter 1 Normal Solution
Glacial Acetic acid	1.05	17.4	57.5	17.4	57.5
Ammonia 30%	0.89	14.5	69	14.5	69
Ammonia 25%	0.91	13.4	74.6	13.4	74.6
Hydrochloric acid 36%	1.18	11.7	85.8	11.7	85.8
Hydrofluoric acid 40%	1.13	22.6	44.2	22.6	44.2
Hydrofluoric acid 48%	1.15	28.9	34.5	28.9	34.5
Nitric acid 70%	1.42	15.8	63.3	15.8	63.3
Perchloric acid 60%	1.54	9.2	108.7	9.2	108.7
Perchloric acid 70%	1.67	11.6	86.2	11.6	86.2
Sulphuric acid 98%	1.84	18	53.1	36	26.2
Phosphoric acid 85%	1.7	15.2	65.8	45.6	21.9