Answer:
The formal charge for H,O,F,O = 0 ,0 , 1, -1
Explanation:
The octet of electrons acquired by oxygen and fluorine atoms in this structure and the formal charges add to zero.Assigning of a formal charge +1 to an electro-negative atom as fluorine indicates that a structure does not occur .Fluorine normally forms one oxyacid HOF.
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5000 units of antigens are present in 0.5 mL of the mumps virus vaccine.
Volume of the vaccine after dilution with water = 2 mL
0.5 mL has 5000 units antigen. So when 0.5 mL was diluted to 2 mL, the final vaccine after dilution would contain 5000 units of antigen.
Units of antigen present in 1 mL vaccine sample
=
Therefore, 2500 units of the antigen will be present in each milliliter, if 0.5 mL of the vaccine is diluted to 2 mL with water for injection.
Answer: 0.05 A
Explanation:
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