12. Baking powder is made up of sodium hydrogen carbonate and calcium hydrogen phosphate. When baking powder is wet, these components
react to produce carbon dioxide. The equation for
this reaction is given below:
NaHCO,(aq) + CaHPO, (aq) - NaCaPO (aq) + CO2(g) + H2O(1)
How many liters of carbon dioxide can be formed at room temperature from 4.00 g of NaHCO;
and excess CaHPO,?

"among the transition metal elements, manganese and zinc have a slight lowering of electronegativities. the reason behind this is that the nuclear charges of these elements are slightly weaker than the other transition metal elements due to the way their valence electrons are filled up. both manganese and zinc have their valence electrons filled up to the 4th shell with 1 pair of electrons (4s2) completely occupying it. although the electrons in the 3rd shell (3d) are yet to be paired since the outer most shell is filled up, the ability of the nucleus to attract electrons is lessened. hence,   the electronegativity (or the ability to attract electrons) is lessened."

hurricanes form in warm water