If a piece of zinc is added to sulphuric acid, an exothermic reaction occurs. The speed of reaction increases during the first few seconds because a. The reaction mixture is getting hotter.
b. The amount of zinc is decreasing.
c. the Zn+2 ions produced act as a catalyst.
d. the concentration of sulphuric acid is increasing.

your answers are a,b,,e and f

i hope this

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explanation:

b. is the answer hoped i        

atomic mass = 39

number of neutrons = 20

number of protons= 19

electronic configuration = 1s2 2s2 2p6 3s2 3p6 4s1

the number of electron in first shell = 2

number of electrons in n=3 shell = 8