Chemical CalculationsD. Van Nostrand Company, 1923 - 276 páginas |
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Página 3
... sample is given as far as the second decimal place and so a maximum apparent error of ± 0.005 % may be assumed . This gives the percentage of error for this factor of + 0.005 54.23 X 100 = ± 0.0092 % . This latter error is much larger ...
... sample is given as far as the second decimal place and so a maximum apparent error of ± 0.005 % may be assumed . This gives the percentage of error for this factor of + 0.005 54.23 X 100 = ± 0.0092 % . This latter error is much larger ...
Página 16
... sample of ore is given as 47.23 % Fe , and a ton of 2000 lbs . is taken , how much iron is present ? Underscore the first uncertain figure in the answer . Ans . 944.6 6. Convert the following magnitudes into the system of notation by ...
... sample of ore is given as 47.23 % Fe , and a ton of 2000 lbs . is taken , how much iron is present ? Underscore the first uncertain figure in the answer . Ans . 944.6 6. Convert the following magnitudes into the system of notation by ...
Página 36
... . MgCO3 . ( a ) What are the percentages of magnesium carbonate and of calcium carbonate in such a sample ? ( b ) How many pounds of magnesium carbonate and calcium carbonate in a ton of this dolomite ? ( 36 CHEMICAL CALCULATIONS.
... . MgCO3 . ( a ) What are the percentages of magnesium carbonate and of calcium carbonate in such a sample ? ( b ) How many pounds of magnesium carbonate and calcium carbonate in a ton of this dolomite ? ( 36 CHEMICAL CALCULATIONS.
Página 45
... sample , and y its 1 The data has been taken from the tables of Ferguson and Talbot for Sulphuric Acid . See Chem . Ann . , Table 82 . 2 The method of determining the Baumé of a liquid will be discussed at greater length under Specific ...
... sample , and y its 1 The data has been taken from the tables of Ferguson and Talbot for Sulphuric Acid . See Chem . Ann . , Table 82 . 2 The method of determining the Baumé of a liquid will be discussed at greater length under Specific ...
Página 52
... sample of sulphuric acid is 60.85 ° Bé . , what is the percentage of H2SO4 ? ( b ) What is the Baumé of 78.00 % sulphuric acid ? Ans . The tabular difference in Bé . is 1 ° Bé . ( 61-60 ) ; the tabular difference of per cent H2SO4 is ...
... sample of sulphuric acid is 60.85 ° Bé . , what is the percentage of H2SO4 ? ( b ) What is the Baumé of 78.00 % sulphuric acid ? Ans . The tabular difference in Bé . is 1 ° Bé . ( 61-60 ) ; the tabular difference of per cent H2SO4 is ...
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Términos y frases comunes
2HCl 2KCl acetic acid added AgBr AgCl amount analysis analyzed anhydride aqueous vapor arsenic atomic weight BaCl2 barium sulphate barometer boiling point bromine CaCO3 Calculate the percentage Calories carbon dioxide Chem chemical compound contains corresponding cubic centimeter decimal point degrees Baumé determined element equation equivalent error factor flask formula freezing point gases given H₂O HNO3 hydrochloric acid hydrogen iodide iodine iron kilogram liquid liter logarithm mercuric oxide mercury meters method mixed acid mixture molecular weight multiplied NaCl NaHCO3 NaOH neutralize nitric acid nitrogen normal solution obtained oleum oxalic oxygen platinum potassium chloride potassium permanganate pounds present pressure problem ratio reaction salt sample significant figures silver chloride sodium carbonate sodium chloride sodium hydroxide sodium sulphate specific gravity specific heat standard conditions substance sulphuric acid Table taken temperature thiosulphate tion titrated unit valence volume
Pasajes populares
Página 95 - Avogadro's law states that equal volumes of all gases at the same temperature and pressure contain the same number of molecules...
Página 268 - Baume Hydrometers for use with this table must be graduated by the above formula, which formula should always be printed on the scale. Atomic weights from FW Clarke's table of 1901. О - 16. Allowance for Temperature At 10° -20° Be.— 1/30° Be.
Página 9 - The logarithm of the quotient of two positive numbers is found by subtracting the logarithm of the divisor from the logarithm of the dividend. (6) The logarithm of a power of a positive number is found by multiplying the logarithm of the number by the exponent of the power. For, N" = (oT)
Página 106 - (a) Units of Capacity. — The liter, defined as the volume occupied by a quantity of pure water at 4° C. having a mass of 1...
Página 269 - Soc., vol. 57, p. 363. AUTHORITIES — WC FERGUSON; HP TALBOT. This table has been approved and adopted as a standard by the Manufacturing Chemists' Association of the United States.
Página 88 - Marriott, so named after its discoverers, is that the volume of a gas varies inversely as the pressure to which it is subjected.
Página 140 - The atomic weight (also known as the combining weight) of an element is the ratio of the weight of an atom of that element to the weight of an atom of hydrogen. Hydrogen...
Página 58 - Thus, the reduction of the value of the modulus between the melting point of ice and the boiling point of water is...