Question

ya heterogeneous mixture. D) a homogeneous mixture. 27) What is the percent by mass of hydrogen in NalICo A) 27.4 % B) 1.20 % C) 24.7 % D) 44.2 % 28) Which one of the following formulas is the empirical formula of glucose (Cali2Oo)? A) CHO B) CH20 C) C2H4O2 D) C4Hs04 29) A compound with the empirical formula C2HCI was found in a subsequent experiment to have the molar mass of approximately 181.45 g/mol. What is the molecular formula of this substance? A) C2HCI 30) According to the Ideal Gas Law (PV nRT), at the same temperature and pressure equal volumes of oxygen gas and carbon dioxide gas would have the same A) chemical property B) density C) mass D) number of molecules 31) Which are the most ideal gas conditions? A) Low temperature and high pressure B) High temperature and low pressure C) Low temperature and low pressure D) High temperature and high pressure 32) At which pressure will a sample of water have the highest boiling point? A) 100 Torrs B) 300 Torrs C) 500 Torrs D) 700 Torrs Page 6 of 8