Answer:
the AUTOmobile serves as a way for transport, for people to get from point A to point B, the first person to build the car would be the great Karl Benz, he is German and if you can guess he is known for the expensive high class car Mercedes Benz, the impact the car can be taken as good or bad, for one it influenced the industrial age, but on the other hand it caused alot of polution and waste and when waste, I mean cars sitting around in junkyards not being fixed and taking up space.
Explanation:
my sources are from everywhere and Im sure you could have found verified sources too
Answer:
Proton:20
Electrons:20 (18 if wanted balance electron)
Mass:40
Ca²+
To find the formulae, you must add as many of the ions together to get a neutral charge. For example, one Li^+ ion and one NO2^- ion give LiNO2, which is lithium nitrite, but since CO3^2- has a charge of -2, it needs 2 Li^+ ions to make the neutral compound Li2CO3, lithium carbonate. Similarly, Cu^2+ needs 2 NO2^- ions to make the neutral compound Cu(NO2)2, copper(II) nitrite. To name these, simply add together the names of the ions used. Li^+ is lithium, Cu^2+ is copper(II), and Ba^2+ is barium. The negatively charged ions are named as nitrite for NO2^-, carbonate for CO3^2-, bisulfate for HSO4^- and phosphate for PO4^3-.
.4 M means that in 1 Liter of solution there are .4 moles.
Molarity x Liters = Moles
We have molarity, so convert mL to liters
250 mL x 1000mL/1 Liter = .25 L
Now, set up the equation
.4 M x .25 L = .1 moles of solute
When heating lithium carbonate (Li2CO3), it will dissociate to Li2O and Co2. So the balanced chemical equation of this reaction is Li2CO3 = Li2O + CO2.