Question

37) How many of each type of atoms are there in the formula NH4C2H302? A) N 1,H-7,C 2, O-2 B) N-1, H 4, C-2,0-2 C)N 1, H-3, C 2, O-2 D) N-4, H-7,C-2,O-2 E) none of the above 38) Which subshell letter corresponds to a spherical orbital? A) s B) P C)f D) d E) not enough information 39) An aqueous solution is A) water with another compound dissolved in it. B) any liquid with another compound dissolved in it. C) water with a molecular compound dissolved in it D) an ionic compound with water dissolved in it E) none of the above 40) Diatomic N2 can react with diatomic H2 to form ammonia (NH3). The balanced chemical equation is: N2+3 H2-2 NH3 If 6 moles of H2 totally reacted with more than enough N2, how many moles of ammonia would be expected to form? A) 3 moles B) 4 moles C)6 moles D) 2 moles E) not enough information 41) When water is heated, bubbles form in the water. Is this evidence of a chemical reaction? Why? A) Yes, the formation of a gas is proof a new compound has been made. B) No, boiling water is a physical change. C) Yes, the formation of a gas is evidence of a chemical reaction DI No the formation of gas bubbles is a secondary chemical reaction which is ignored. E) none of the above 42) What is the electron configuration for Ga? A) 1s22s22p6323ph3d10424p6 B) 1s22s22p6323ph4s24d104pl ) 122s22p/323p 34104s24pl ) 12222pf323ph4s23d104pl E) rone of the above 6

Answer 1

27 formula & WHY C₂H302 Here, Natomisa lihatoms=443=7 catoms=2,0 atoms a 2 So, NEI, H=7,6=2,052 (Aj