Birds lay eggs that have much harder shells than reptile eggs. What is most likely the main function of the hard shell? to feed the bird as it develops to provide camouflage from predators to keep the embryo warm until the bird hatches to protect and prevent the egg from drying out

How many grams of magnesium metal will react completely with 8.3 liters of 5.5 m hcl? show all of the work needed to solve this problem. mg (s) + 2hcl (aq) → mgcl2 (aq) + h2 (g)

Based on its chemical properties, identify the position of each chemical family on the periodic table.

Covalent bonds generally form when the bonded elements have a difference in electronegativity less than 1.5. subtract the electronegativities for the following pairs of elements and predict whether they form a covalent bond. electronegativity difference of c and c: ionic covalent electronegativity difference of mg and cl: ionic covalent