I say Answer choice A because it is a straight line and it hasn't gone under all those reactions yet.
Answer:
In calcium oxide (CaO), oxygen and calcium are respectively a non-metal and a metal, whose bonding is based on the exchange of electrons to form an ionic bond, which balances their charges and makes it chemically stable.
Explanation:
<em>What is the reason that in the calcium oxide molecule is caO and not Ca₂O or CaO₂?</em>
Calcium is a metallic element -a soft metal- that is capable of bonding with a non-metallic element such as oxygen to form an ionic bond, so that each Ca atom will bond to a single O atom.
CaO (calcium oxide)
- <em>Ca Z = 20 </em>
- <em>O Z = 8</em>
Ca + O ---→ Ca⁺² + O ⁻²
K L M N K L K L M K L
2 8 8 2 2 6 2 8 8 2 8
The electron exchange that is observed occurs between +atom and atom, and for this reason the chemical formula of calcium oxide is CaO.
Calcium oxide (lime) is obtained by heating calcium carbonate (CaCO₃) to very high temperatures through the following reaction
CaCO₃ + heat → CaO + CO₂
Answer:
150.08 g
Explanation:
According the law of conservation of mass, mass can neither be created nor destroyed but is converted from one form to another.
As a result of this, the total mass of reactants must be equal to the total mass of products.
If this is so, we have been told that the mass of AgCl is 150.15 g, the total mass of products is 300.23g.
Therefore; mass of NaNO3 = 300.23 g - 150.15 g = 150.08 g
A 2ft missile tipped with uranium would be able to break through a tank no problem
Answer:
Au = Element
NaCl = Compound
Salad = Heterogeneous
NaCl & Water = Homogeneous
