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研究所、轉學考(插大)-營養學
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99年 - 99輔大轉學考營養學-基礎化學#83062
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題組內容
6. Which formulas are not correct? For each that is not correct, write the correct formula.
(b). Barium carbonate; Ba
2
CO
3
其他申論題
4. The density of ethanol at 20°C is 0.789 g/mL. What is its specific gravity?
#337063
(a). 58 protons, 58 electrons, and 78 neutrons,
#337064
(b). 17 protons, 17 electrons, and 20 neutrons?
#337065
(a). Ammonium phosphate; (NH4)2PO3
#337066
(c). Aluminum sulfide; AI2S3
#337068
(d). Magnesium sulfide; MgS
#337069
(a).Which reactant is the limiting reagent and which reactant is in excess?
#337070
(b). How many grams of CO2 will be formed?
#337071
8. In an experiment forming ethanol, the theoretical yield is 50.5 g. The actual yield is 46.8 g. What is the percent yield?
#337072
9. If we dissolve 18.0 g of Li2O (molar mass = 29.9 g/mol) in sufficient water, to make 500.0 mL of solution, what is the molarity of the solution?
#337073
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