It would seem that because calcium and oxygen are in equal molar ratio for this compound that it would be 50 percent. But that is incorrect, because they each have differing molar masses. Oxygen has a molar mass of 16.000 and calcium has a molar mass of 40.078. So calcium is 40.078/56.078, which is 71.47 percent.
Calcium (Ca) and Oxygen (O) are the two elements that make up calcium oxide.
The chemical formula for calcium is Ca, for sulfur is S, and for oxygen is O. Calcium sulfide is a compound formed by the combination of calcium and sulfur, with the chemical formula CaS. Calcium sulfate is a compound formed by the combination of calcium and oxygen, with the chemical formula CaSO4.
The reaction between CaO and H2O results in the formation of calcium hydroxide (Ca(OH)2) and heat. This process is known as hydration and is exothermic. Calcium hydroxide is a strong base and is commonly used in various applications such as in construction and agriculture.
Ca+O=CaO
CaO has a gram molecular mass of 40.08 + 16.00 = 56.08. The reaction between CaO and water to produce calcium hydroxide, Ca(OH)2, occurs according to the equation CaO + H2O = Ca(OH)2. Therefore, the same number of moles of calcium hydroxide can be produced as the moles of CaO supplied. The gram molecular mass of Ca(OH)2 is 40.08 + 2 (16.00 + 1.008) = 74.10. Therefore, the mass of calcium hydroxide produced with have the same ratio to the mass of calcium oxide supplied as 74.10 has to 56.08, or 412 grams, to the justified number of significant digits.
The percent composition of calcium oxide (CaO) is 71.5% calcium (Ca) and 28.5% oxygen (O).
40 g / 56 g X 100%
calcium + oxygen --> calcium oxide Ca + O --> CaO
how do you write a balanced chemical formula for this question CaO + H2O ---> Ca(OH)2
'CaO' ; 1 x atom of calcium (Ca) 1 x atom of oxygen (O).
The balanced symbol equation for calcium oxide (CaO) with water (H2O) forming calcium hydroxide (Ca(OH)2) is: CaO + H2O → Ca(OH)2
CaO ; 1 atom of Calcium (Ca) 1 atom of oxygen (O)
The balanced equation for the reaction between calcium oxide (CaO) and water (H2O) is: CaO + H2O -> Ca(OH)2. This reaction produces calcium hydroxide (Ca(OH)2) as the product.
Ca = calcium , O = oxygen and written together like CaO it stands for calcium oxide.
Calcium (Ca) and Oxygen (O) are the two elements that make up calcium oxide.
Two atoms. One calcium (Ca) and one oxygen (O).
The balanced equation for this reaction is: Ca(OH)2 --> CaO + H2O.