Please help 50 points
Questions
1. Were all your answers the same? Why do you think this is?

2. What type of person might have a low resting rate?

3. Why is it important to know your blood type?

1. (I was not there) 2. An active one with no pulmonary or coronary disease. 3. It is useful to know blood type in case of an accident where you need blood, and if you make certain your blood is compatible with whom you wish to have children to minimize preventable problems.

Explanation:

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  the   balanced   equation   for   reaction of   ca metal   with   o2 to   produce   cao   is as below

2 ca+ o2→ 2 cao2

  explanation

the reaction is   balanced     since the   number of atoms   in reactant side is   equal to   number of atoms   in   product side.   for   example   they   are 2   atom of   ca in   reactant   side   and   2   atoms of ca   in   the product side.

  the   process   is a   meet the   requirement   of   redox   reaction because :     calcium   is   oxidized   from   oxidation state 0   to 2+   while   oxygen   is reduced from   oxidation   state   0   to 2-