A 0.329 strip of Mg metal reacts with 3.0 M HCI (aq) at 25C, If it takes 25 s for the magnesium to disappear completely, calculate the average rate at which the hydrogen
gas is produced in mol/s. The following is the balanced chemical equation
Mg(s) + 2HCl(aq)→ H2(g) + MgCl2(s)

Areaction is first order with respect to reactant x and second order with respect to reactant y. which statement describes the rate law for this reaction?

Acalorimeter is to be calibrated: 51.203 g of water at 55.2 degree c is added to a calorimeter containing 49.783 g of water at 23.5c. after stirring and waiting for the system to equilibrate, the final temperature reached is 37.6 degree c. specific heat capacity of water (s = 4.18 j/g∙degree c). calculate the calorimeter constant. (smδt)warm water = -[(smδt)cold water + (calorimeterδtcold water)]

How many moles of potassium hydroxide are needed to completely react with 2.94 moles of aluminum sulfate according to the following equation: