Explanation:
b and c are true statements
If you are doing electronic configuration for Bromine atom; then you need to put the symbol of Argon (Ar) inside the brackets because the noble gas that comes before Bromine (Br) is Argon (Ar).
The number of grams present in 0.025 mole of Demerol hydrochloride is 7.094 grams.
<h3>What is Demerol hydrochloride?</h3>
It is a drug used in treating severe or moderate pain.
The moles are given = 0.025
The formula is C₁₅H₂₂CINO₂
The elements that present are C, H, Cl, N, O.
The molecular weight are given:
Carbon: 12.0107
Hydrogen: 1.00784
Chlorine: 35.453
Nitrogen: 14.007
Oxygen: 15.999
Multiply the molecular weight with moles and add them
(15 x 12.0107) + (22 x 1.00784) + (1 x 35.453) + (1 x 14.007) + (2 x 15.999) = 283.79098 grams per mole.
Now, multiply the number of moles given with the total molecular weight
283.79098 x 0.025 = 7.094
Thus, the number of grams are 7.094.
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C. it means aqueous, and we all know what aqua means (I hope)