Question 2(Multiple Choice Worth 2 points) (06.01 MC)

Choose the chemical equation that is correctly balanced.

2Ca(s) + Cl2(g) → CaCl2(s)

2Mg(s) + O2(g) → 2MgO(s)

Li(s) + Cl2(g) → 2LiCl(s)

2C(s) + O2(g) → CO2(g)

thrombocytopenia, which is a deficiency in blood platelets, can cause bleeding and bruising in the dermis similar to senile purpura. other possible causes include: exposure to ultraviolet rays and aging skin are common causes of senile purpura. senile purpura may also be a sign of collagen loss in the skin and bones.

the electromagnetic energy from the sun arrives in the form of visible and invisible light.