Weekend sheet (6) Complete the following: gas and other gases represents 1 % of the air volum I- while .gas represents 78%. 2- .gas is consumed in respiration and .gas is prepared in laboratory by the decomposition of 3. in presence of Manganese dioride Gas is used in photosynthesis process and 4- evolves from this process.

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Solutions

Solutions can be considered as homogeneous mixtures which contain two or more than two chemical substances. The chemical substance which is the greater part is defined as solvent. And the chemical substance that is dissolved in a solvent is referred to as solute. Solution chemistry plays an important role in chemistry since it supports many commercial applications of solutions.