Replacement reaction because one element takes place of another element in a compound.
Answer:
I think sodium it may be wrong soŕry
Answer:The main job of the innate immune system is to fight harmful substances and germs that enter the body, for instance through the skin or digestive system. The adaptive (specific) immune system makes antibodies and uses them to specifically fight certain germs that the body has previously come into contact with.
Answer:
3.34×10³⁰ molecules of C₉H₈O₄
Explanation:
Let's determine the molar mass of aspirin:
C₉H₈O₄ → 12 g/mol . 9 + 1g/mol . 8 + 16g/mol . 4 = 180 g/mol
Let's convert the mass from g to mg → 180 g . 1000 mg/1g = 180000 mg
= 1.8×10⁵ mg
Now, we make a rule of three:
In 1.8×10⁵ mg of aspirin (1 mol) we have 6.02×10²³ molecules
In 100 mg of aspirin, we may have ( 100 . 6.02×10³) / 1.8×10⁵ = 3.34×10³⁰ molecules
