When an atom or molecule loses an electron it is oxidized and the reaction is called oxidation, when an atom or molecule gains an electron it is reduced and this is known as reduction. Both oxidation and reduction are known as Redox reaction
<span>(a) Assuming the amount of O2(g) is not limiting the reaction, a mass of 4.23g of Ca(s) will produce an equal mass of CaO(s), hence it will produce 4.23g of CaO(s).
According to their respective molar masses, we have the following CaO molar mass :
Molar mass of Ca + Molar mass of O = 40.1 + 16 = 56.1 g/mol
4.23g of Ca will then produce : 4.23 / 56.1 = 0,07540107 mol of CaO.
(b) With the same reasonment as above, and assuming the amount of Ca is not limiting, we have :
2.87g of O2 will produce : 2.87 / 56.1 = 0,051158645 mol of CaO.
(c) From (a) and (b) answers, we can conclude that the reactant that produces less mol of CaO is limiting the reaction. Hence following the given masses, O2 is the limiting reactant.
(d) Knowing the molar mass of CaO is 56.1 g/mol and knowing that O2 is the limiting reactant, we also know the reaction can produce a maximum of 0,051158645 mol of CaO can be produced.
So we can conclude we will produce :
56.1 * 0,051158645 = 2.87g of CaO.</span>
The attractive force that occurs between the sun and the earth is called:
Gravity
This force works to keep everything on the planet grounded.
Answer:
C
Explanation:
if we were to followw the IUPAC
The Molarity of solution that contain 2.3 mole of NaCl in 0.45L of solution is calculated using the below equation
= molarity = moles/volume in liters
= 2.3 moles/0.45 L = 5.1 M
