Which of the following pairs of chemical reactions are inverses of each other? Question 16 options: Oxidation and reduction Ammoniation and alkylation Hydrogenation and alkylation Halogenation and hydrolysis

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

What type of energy conversion occurs when you place your feet near the fire place and they become warm

The molar mass of cu is 63.55 g/mol. the number of grams of cu produced in this reaction is