Chemical CalculationsD. Van Nostrand Company, 1923 - 276 páginas |
Dentro del libro
Resultados 1-5 de 76
Página 1
... obtained by measurement employing an appropriate unit is approximate . The number of individual weights in a box may readily be counted and the result accurately expressed , but if these weights are used to determine the weight of an ...
... obtained by measurement employing an appropriate unit is approximate . The number of individual weights in a box may readily be counted and the result accurately expressed , but if these weights are used to determine the weight of an ...
Página 2
... obtain the molecular weight of crystallized aluminum sulphate : Al2 ( SO4 ) 3.18H2O . 2 Al 3 S 12 O 36 H 180 = = 53.94 96.192 = 192.000 = 36.288 = 288.000 666.420 The atomic weight of aluminum is given as 26.97 which shows that the ...
... obtain the molecular weight of crystallized aluminum sulphate : Al2 ( SO4 ) 3.18H2O . 2 Al 3 S 12 O 36 H 180 = = 53.94 96.192 = 192.000 = 36.288 = 288.000 666.420 The atomic weight of aluminum is given as 26.97 which shows that the ...
Página 9
... obtained by subtracting the loga- rithm of the divisor from the logarithm of the dividend . Logarithm tables contain ... obtain the logarithm of a number involves the determination of the characteristic and the search in a table of ...
... obtained by subtracting the loga- rithm of the divisor from the logarithm of the dividend . Logarithm tables contain ... obtain the logarithm of a number involves the determination of the characteristic and the search in a table of ...
Página 10
... obtain the logarithm of a number which contains three signifi- cant figures by direct reading . To use such a table to find the loga- rithm of a number containing four significant figures will require interpolation . A five place ...
... obtain the logarithm of a number which contains three signifi- cant figures by direct reading . To use such a table to find the loga- rithm of a number containing four significant figures will require interpolation . A five place ...
Página 11
... a single operation by adding to the loga- rithms of the numerator the cologarithms of the denominator . The cologarithm of a number is obtained by subtracting the logarithm from zero ; that is , it is the logarithm APPROXIMATE NUMBERS II.
... a single operation by adding to the loga- rithms of the numerator the cologarithms of the denominator . The cologarithm of a number is obtained by subtracting the logarithm from zero ; that is , it is the logarithm APPROXIMATE NUMBERS II.
Otras ediciones - Ver todas
Términos y frases comunes
AgCl ammonia amount analysis approximate aqueous vapor atomic weight barium sulphate barometer boiling point bromine CaCO3 calcium Calculate the percentage Calories carbon dioxide cent Chem chemical coefficient of expansion compound constant contains corresponding cubic centimeter degrees Baumé Density of water determined element equation equivalent factor flask formula freezing point gases given gram molecule H₂O HNO3 hydrochloric acid hydrogen iodine iron kilogram liquid liter logarithm mercuric oxide mercury methane method mixed acid mixture molecular weight NaCl NaOH nitric acid nitrogen normal solution obtained oleum oxygen percentage composition platinum potassium chloride potassium permanganate pounds pressure ratio reaction relative density salt sample saturated significant figures silver chloride sinker SiO2 sodium carbonate sodium chloride sodium hydroxide specific gravity specific heat standard conditions sulphuric acid Table taken temperature titrated unit volume vacuo valence vapor density water vapor
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...