Different between ionic and covalent combination

What would happen i you put a nickle and a penny in with hydrogen proxide

Since this reaction takes place in acidic solution, H2O (l) and H + (aq) will be involved in the reaction.

What two bodies systems work together to deliver oxygen to cells

A chemical equation lists the atoms involved in a reaction? A. True. B. False

What is the density of a substance that has a mass of 55.4 g and a volume of 10 cm3?

If A is slowly added to a solution containing 0.0500 M of B and 0.0500 M of C, which solid will precipitate first? The solubility product constant for A2B3 is 2.30*10-8. The solubility product constant for AC4 is 4.10*10-8.

Research three different types of fire extinguisher and explain how these can be used to put out different fires, you must relate this to the fire triangle and the section that is removed

If a mineral has a daughter to parent ration of 3:1 (three daughter atoms for every one parent atom), how many half-lives have passed since the mineral formed?

What is true of the enthalpy value of an intermediate reaction? A. It always has a negative enthalpy value B. It is multiplied by 2 if the intermediate reaction is multiplied by 2 C. It is the same as the total enthalpy of reaction D.

Calculate the percent composition of the compound that forms when 222.6 g N combines completely with 77.4 g 0. calculate to the nearest tenth of a percent.