17. A balloon contains 4.50 X 1022 atoms of helium gas. Calculate the mass of helium in
grams.

‘which reaction would most likely require the use of an inert electrode?

Use the periodic table to complete this equation that represents nuclear fission processesun - ba c 3 n

What amount of heat is exchanged when 106.2 grams of substance y goes from a liquid at 35 degrees celsius to a solid at the same temperature? melting point of substance y = 35 degrees c; δhvaporization = 3.67 j/mol; δhfusion = 3.30 j/mol. mwsubstance y = 28.22 g/mol. −12.4 j −3.51 x 102 j 1.24 x 101 j 351 j