Magnesium and calcium are in group 2 of the periodic table.
They are less reactive than the metals in group 1.
(a) Calcium reacts with water to form calcium hydroxide, Ca(OH),, and hydrogen, Hz.
Ca(s) + 2H2O(l) → Ca(OH),(s) + H2(g)
Describe what would be seen when a piece of calcium is dropped into a
container of water.
(2)

Which compounds have the empirical formula ch2o? a.c2h4o2 b.c3h6o3 c.ch2o2 d.c5h10o5 e.c6h12o6

Both josef loschmidt and amedeo avogadro contributed to our understanding of basic molecular numbers, sizes, and reaction ratios. neither scientist discovered “avogadro’s number” in the form we use it today (6.02 x 10 23). still, there’s a controversy over the name. research the contributions from these two scientists and read about how avogadro’s number got its name. briefly state what you think this number should be called, providing key details of each scientist’s contributions to this concept and a solid rationale for your case in naming the number.

Which process results in the release of energy stored in the products of photosynthesis? a. polymer synthesis b. depolymerization c. digestion d. cellular respiration