Which element reacts spontaneously with 1.0m hcl (aq) at room temperature?
(1) copper (3) silver
(2) gold (4) zinc

Why is any chemical reaction always balanced? give reasons and explain the easiest way to solve the balancing problems in chemical equations with stoichiometric coefficients upto 20 as hit and trial doesn't always work. give full reasoning

How do you interpret a chromagram for what mixtures contain?

Determine the mass of the object below with accuracy and to the correct degree of precision. a. 324.2 g b. 324 g c. 324.30 g d. 324.25 g