If element X has 25 protons, how many electrons does it have?

The temperature of gas is 100 K and its volume is 500 ml. If the volume is increased to 1000.0 ml, what is the new temperature of the gas?

Determine the number of ions produced in the dissociation of the compound listed. CaO

What is the tested variable in the experiment?

Inherited traits come from receiving the blank of the parents Influence or genes

How do you measure heat in high school chemistry

When a catalyst lowers the activation energy of a reaction the rate of the reaction?

Liquids: A) must be contained to stay in one spot B) have a variable volume, but a fixed mass C) are usually more dense than solids and gases D) cannot be changed into gases

Given the following list from the activity series of metals (from most active to least active) K, Na, Al, Mn, Cr, Cd, Co, Pb, Hg which reaction would you NOT expect to occur? 1. Co²⁺ (aq) + Al (s) → Al³⁺ (aq) + Co (s) 2.

Chemical reactions that release energy A. will not occur. B. need catalysts to occur. C. will always explode. D. often occur spontaneously.

Which metal exist in liquid state and can be cut with knife?