Explanation:
how are you confused there just tell me the problem
group 1 elements are metals with<u> low</u> density
Answer: 
Explanation:
Heat of reaction or enthalpy change is the energy released or absorbed during the course of the reaction.
It is calculated by subtracting the enthalpy of reactants from the enthalpy of products.

= enthalpy change = ?
= enthalpy of products
= enthalpy of reactants
For the given reaction :



Answer: I have the same test message me
Explanation: it won’t let me share my answers
Potassium it is the answer