Bonjeur monseur, la french are here! it seems you have a problem with the elements on earth. lead seems correct since it is indeed a harmful material
The second one. Subscripts are always related to molecules, not atoms and only count the number of molecules of a single element unless in a form such as (CO3)2. In this case, there are 2 molecules of carbonate and 6 of oxygen
Let me know if you need further explanation
Hope this helps!
Answer:
Magnets stick to the fridge door because, underneath the paint, the door is made of steel. Magnets are attracted to certain metals, and if the attraction is strong enough they can hold on even when upside down. ... This means that a magnet will always be attracted to the door. But an iron nail does not have any magnetic properties. So it doesnt get attracted.
Hope this helps, Pls mark as Brainliest!!
Answer:
Investigating how experimental conditions can effect the speed of a chemical reaction and give insight into reaction mechanisim and states.
Explanation:
Chemical kinetics is a process of investigation how experimental conditions can affect the speed of a chemical reaction and give insight into reaction mechanism and states.
- Chemical kinetics deals with two aspects chemical reaction; the speed at which reaction occurs(reaction rate) and the details of the steps involved in the reaction(reaction mechanism).
- The two aspects are closely related.