Diatoms are photosynthetic unicellular algae populating the oceans and other waters around the globe, They form a phylum containing about 100,000 recognized species. Diatoms generate about 20 percent
of all oxygen produced on the planet each and produce 25-45% of the total primary production of
organic material in the oceans.

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the enthalpy of formation of water is given as -285.8kj/mol, which states that the enthalpy of formation is negative.

negative enthalpy of formation indicates that the heat is released during the reaction process. the heat is released from reaction to the surroundings the enthalpy is expressed with a negative sign with the energy given out in the reaction process.

the formation of water takes place by giving out heat which is -285.8 kj/mol.

b) nuclear ive learned that in a pedtrodic table