Final temperature of platinum :- 36.5°C
Final temperature of Zinc :- 29.17°C
You take 80 g of Neon times 1 mol over the molar mass, 20.18 g/mol and multiply by Avogadro's number.
HCl + NaOH ------> NaCl + H2O
hydrogen chroride + sodium hydroxide ----> sodium chloride + water
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