Select the two chemical reactions that adhere to the law of conservation of matter. A

2As + 6 NaOH → 2 Na3AsO3 + 2H2

B

2H2O2 → 2H2O + O2

C

NaBr + Cl2 → 2NaCl + Br2

D

Zn + 2HCl → ZnCl2 + H2

E

8Ag2S → 10Ag + S8

F

Ba3N2 → 2Ba + N2

What is the total reduction potential of a cell in which potassium (k) is reduced and copper (cu) is oxidized? a. 2.59 v b. 3.27 v c. -3.27 v d.-2.59 v

You have a sample of a gas that occupies a volume of 17ml at -111 degrees celsius. what volume does the sample occupy at 88 degrees celsius? show all work asap

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