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HACTEHA [7]
3 years ago
15

Hydrocortisone valerate is an ingredient in hydrocortisone cream what is the percent by mass of carbon

Chemistry
1 answer:
sladkih [1.3K]3 years ago
8 0
The chemical formula of hydrocortisone valerate is C26H38O6. First, we determine the molar mass of the substance by adding up all the products of the number of atoms and the molar mass of atoms as shown below.
                        molar mass = 26(12) + 38(1) + 6(16) = 446 g/mol
Since, there are 26 atoms of carbon in each molecule, the mass of carbon in each mole is 
                     mass of carbon = (26)(12) = 312
Obtaining the percent by mass of carbon,
                           % by mass of carbon = (312/446) x 100 % 
                                                                 = 69.955%
Thus, the percent by mass of carbon in hydrocortisone valerate is approximately 69.96%. 
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Determine the molecular geometry for ClF3ClF3.
aivan3 [116]

Answer:

The correct option is b

Explanation:

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6 0
3 years ago
8. If I have 34 grams of FeO, how many grams of Oxygen were synthesized?<br>Fe + O2 → Feo​
krek1111 [17]

Answer:

34 gram of FeO produced 8 gram of oxygen.

Explanation:

Given data:

Mass of FeO = 34 g

Mass of oxygen = ?

Solution;

Chemical equation:

2FeO → 2Fe + O₂

Number of moles of FeO:

Number of moles = mass/ molar mass

Number of moles = 34 g /71.8 g/mol

Number of moles = 0.5 mol

Now we will compare the moles of FeO with oxygen:

             FeO       :       O₂

                2         :        1

                0.5      :      1/2 × 0.5 = 0.25

Mass of oxygen:

Mass = number of moles × molar mass

Mass =  0.25 mol × 32 g/mol

Mass = 8 g

So 34 gram of FeO produced 8 gram of oxygen.

8 0
3 years ago
How many gram of gaseous carbon dioxide can be absorbed or reacted by 2kg of lithium hydroxide? ​
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Answer:

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5 0
3 years ago
In general, if a body of mantle (source) rock is subjected to partial melting, the magma that is produced is expected to be ____
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3 years ago
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Answer is:

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Silver chloride (AgCl) has low solubility in water and it will form white precipitate.

6 0
3 years ago
Read 2 more answers
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