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Sever21 [200]
3 years ago
7

I need help with this question... phenobarbital elixir contains 2 grams in 1 liter of elixir. How many milligrams of phenobarbit

al are contained in 1 teaspoon of elixir?
Mathematics
2 answers:
posledela3 years ago
8 0

To solve this problem, all we need is the conversion factor.

We know that there are:

1 liter = 202.884 teaspoons

 

Therefore the mass of Phenobarbital is:

mass = (2 grams / 1 Liter) * (1 teaspoon) * (1 Liter / 202.884 teaspoons)

<span>mass = 0.00986 g = 9.86 x 10^-3 g = 9.86 mg</span>

Bas_tet [7]3 years ago
3 0

Answer:

9.86 milligrams

Step-by-step explanation:

It is given that 1 liter f elixir contains 2 grams of phenobarbital elixir.

Since 202.884 teaspoons = 1 liter

so 1 teaspoon of elixir =  \frac{1}{202.884} liter

∵ 1 liter of elixir contains phenobarbital = 2 gms.

∴  \frac{1}{202.884} liter of elixir contains phenobarbital =  \frac{2*1}{202.884} = 0.009858 grams

or 0.009858 × 10³ milligrams

 = 9.86 milligrams.

Therefore, 9.86 milligrams of phenobarbital will be required.

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