Cho phương trình: K2CO3 + 2HCl --> 2KCl + CO2 + H2O. Phương trình ion rút gọn đúng là

Element before carbon on the periodic table

Achemist who studies water samples did a demonstration of how to test for lead in water. she added a clear solution of potassium iodide to a clear solution of lead nitrate. then a yellow swirling solid formed in the liquid. what is most likely true about the yellow solid?

For a particular first-order reaction, it takes 24 minutes for the concentration of the reactant to decrease to 25% of its initial value. what is the value for rate constant (in s-1) for the reaction?