Chemical CalculationsD. Van Nostrand Company, 1923 - 276 páginas |
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... figures not justified by the number of significant figures in the data given . It was thought best to carry out the answer , as this involved no extra work and is valuable in inculcating accuracy . The author wishes to express his ...
... figures not justified by the number of significant figures in the data given . It was thought best to carry out the answer , as this involved no extra work and is valuable in inculcating accuracy . The author wishes to express his ...
Página 1
... figures ( 126.932 ) , 1 while many of the other elements are given only to 1 Significant figures are used to designate magnitudes , one or more of which may be used . One mile is 5280 feet , the number of significant figures in this ...
... figures ( 126.932 ) , 1 while many of the other elements are given only to 1 Significant figures are used to designate magnitudes , one or more of which may be used . One mile is 5280 feet , the number of significant figures in this ...
Página 2
... figures . 1 Logarithms have been employed in the solution of problems in this book , except where the operation was very simple . In such cases the 10 " Mannheim slide rule was used . The author would strongly recommend this simple ...
... figures . 1 Logarithms have been employed in the solution of problems in this book , except where the operation was very simple . In such cases the 10 " Mannheim slide rule was used . The author would strongly recommend this simple ...
Página 3
... figure is misleading , for if the hundredths place is unreliable , much more so is the third decimal place . To ... figures one would be justified in concluding that it is possible to weigh one ten millionth of a gram , while the ...
... figure is misleading , for if the hundredths place is unreliable , much more so is the third decimal place . To ... figures one would be justified in concluding that it is possible to weigh one ten millionth of a gram , while the ...
Página 4
... figure and the factor is 0.7573 . It is common for chemists to take the molecular weight to one significant figure in ... figures in the final result substantially free from the accumulated rejection errors . 2. In multiplication or ...
... figure and the factor is 0.7573 . It is common for chemists to take the molecular weight to one significant figure in ... figures in the final result substantially free from the accumulated rejection errors . 2. In multiplication or ...
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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...