The oxidation number of chlorine in the Cl-<span> ion is -1.</span>
Answer:
A It changes shape and volume
Explanation:If a liquid turns into a gas it starts to change shape since they are not the same
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The steel cranes lifting thousands of feet high during skyscraper construction is an example of the evolution of building techniques.
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Explanation:
Molar heat combustion:
Molar heat of combustion is defined as heat released when 1 mole of substance is burnt under the action of oxygen gas to give water and carbon-dioxide.It is measured in kiloJoules (kJ) per mole.This heat of energy can be positive or negative.
- If the enthalpy is positive than the reaction is said to be an endothermic reaction.
- If the enthalpy is negative than the reaction is said to be an exothermic reaction.
That means that one mole of sulfur has a mass of 32.065 grams. b) This compound contains two hydrogen atoms and one oxygen atom. To find the molar mass of H2O, we need to add the mass of two hydrogen atoms plus the mass of one oxygen atom. We get: 2(1.008)+16.00=18.016g/mol.
