A20.0g sample of mercury(ii) oxide (hgo, m = 216.6) is heated strongly, causing it to decompose to metallic hg and o2 gas. what volume of o2 gas is produced( measured at stp)
(a) 1.03l (b) 2.07l (c) 4.14l (d) 14.0l
when 30.0 ml of 0.10 m agno3 is added to 30.0 ml of 0.10 m nacl, aqueous nano3 and solid agcl are formed. how much solid agcl is produced?
(a) 0.003 mol (b) 0.0060 (c) 0.030 mol (d) 0.060

What type of reaction is illustrated? 2c12o5 = 2cl2 + 502

Agroup of students is studying convection currents. they fill two identical balloons with the same amount of helium. one balloon is placed in a freezer and the other in an area with warm air. after 10 minutes, the balloons are released from a height of 1 meter. which of the following do the students most likely observe? a. the balloons both rise. the cold balloon is larger than the warm balloon. b. the balloons rise at the same rate. both balloons are the same size. c. the warm balloon expands and rises. the cold balloon shrinks and sinks. d. the cold balloon expands and rises. the warm balloon shrinks and sinks.

Answer from each drop-down menu. e characteristics of a borane molecule (bh). the lewis structure and table of electronegativities are given olecular shape is and the molecule is reset next erved. search e a