<span>If deltaH is positive, that means the reaction took heat from its environment (endothermic reaction).
The molar mass of O2 is 32 g/mol.
Therefore, 42g of O2 is equal to 1.3 moles O2.
The equation assumes 3 moles of O2. That means, only 1.3/3 = 43% of the delta H in the equation was formed.
824.2 kJ x 43% = 354 kJ. The closest answer is 1) the absorption of 361 kJ of heat.</span>
The heterogeneous mixture that has very small dispersed particles and stays mixed for a long time is colloid. Because colloid has particles that are small enough to suspended but are as large that they can scatter light.