Asolution of cough syrup contains 5.00% active ingredient by volume. if the total volume of the bottle is 11.0 ml , how many milliliters of active ingredient are in the bottle?

There will be "1.6 mL" of active ingredients present in the bottle.

According to the question,

Bottle's total volume,

= 32 mL

Active ingredients by volume,

= 5%

=

=

→ Milliliters of Active ingredient present in the bottle will be:

=

=

Thus the above is the right answer.

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the law of conservation of mass states that in a chemical reaction, the total mass of reactants is equal to the total mass of products. because atoms are only rearranged in a chemical reaction, there must be the same number of sodium atoms and chlorine atoms in both the reactants and products

1. 1 mole of anything contains 6.022x10^23 pieces  

d  

2. a  

3. c, number  

5. 1.24x10^24atoms / 6.022x10^23atoms/mole = 2moles h2 atoms  

6. fe2br3 mass = 2moles x mass fe + 3 moles x mass br  

molar mass = grams / number of moles = g/mole  

to find moles = g / molar mass  

to find mass = g = molar mass / moles