A 90.0 g sample of an unknown metal absorbed 25.6 J of heat as its temperature increased 1.18 degrees C. What is the specific he
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Answer :
The molar mass of ibuprofen is, 206.29 g/mole.
The number of moles of ibuprofen in a single tablet is, 0.000969 moles
The number of moles of ibuprofen in four doses is, 0.007752 moles
Solution : Given,
Molar mass of carbon = 12.01 g/mole
Molar mass of hydrogen = 1.01 g/mole
Molar mass of oxygen = 15.99 g/mole
1) Now we have to calculate the molar mass of ibuprofen.
Molar mass of ibuprofen, =
The molar mass of ibuprofen = 206.29 g/mole
2) Now we have to calculate the moles of ibuprofen.
Formula used :
Given : Mass of ibuprofen = 200 mg = 0.2 g (1 mg = 1000 g)
The moles of ibuprofen = 0.000969 moles
3) Now we have to calculate the number of moles of ibuprofen for four doses.
Number of tablets in one dose = 2
Total number of tablets in 4 doses = 4 × 2 = 8
Number of moles of ibuprofen in 8 tablets =
Answer:
Rock layer and sandwich layer is almost the same.
Why are rock layers are like sandwiches?
This geologic structure is called an anticline. Now gently bend your sandwich so that the layers are bowed downwards, thus creating a syncline. The presence of anticlines and synclines indicate strong forces that often form mountain ranges.
Answer:
See solution.
Explanation:
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In this case, according to the given information, it turns out possible for us to set up the formula for the calculation of the by-mass percentage of the metal:
Thus, we solve for the molar mass of the metal to obtain:
For the subsequent problems, we proceed as follows:
a.
b.
c.
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