Calcium oxide (CaO) or lime in solid form can be prepared from the decomposition of calcium hydroxide {Ca $(OH)_{2}$ in to lime (CaO) and water ( $H_{2}O$ at high temperature. The reaction is an endothermic reaction. That is heat is absorbed in this reaction process. One mole of calcium hydroxide decomposed into one mole of calcium oxide and one mole of water. The balanced reaction can be shown as-CaC $O_{3}$ (solid) → CaO (solid) + $H_{2}O$ (liquid). The heat of the reaction is (+) 63.7 kJ/mole of CaO.

3 0

3 years ago

What kind of chemical bond is formed between nonmetals? Explain your answer.

REY [17]

Answer:

The ionic bond is formed due to an electrostatic force of attraction between two oppositely charged ions. This bond is usually formed between a metal and a nonmetal. Prior to the electrostatic attraction, there is a total transfer of valence electrons from one atom to the other atom.

Explanation: hope that helps

5 0

3 years ago

An average bushel of apples has a mass of 10 kg and contains 5 dozen apples.

Alina [70]

Answer:

Average mass of 6 apple = 1 kg

Explanation:

Given:

Average mass of 5 dozen apple = 10 kg

Find:

Average mass of 6 apple

Computation:

Average mass of 6 apple = [Average mass of 1 apple] x [6 apple]

Average mass of 6 apple = [10/(12 x 5)] x [6]

Average mass of 6 apple = 1 kg

3 0

2 years ago