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18.01.2021 •
Chemistry
A chemist adds 470.0 mL of a 8.8 times 10^-5 mM silver(II) oxide (AgO) solution to a reaction flask. Calculate the mass in micrograms of silver(II) oxide chemist has added to the flask. Round your answer to 2 significant digits.
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Ответ:
5.1 μg
Explanation:
Step 1: Given data
Volume of solution (V): 470.0 mL (0.4700 L)
Concentration of the solution (C): 8.8 × 10⁻⁵ mM (8.8 × 10⁻⁸ M)
Step 2: Calculate the moles (n) of AgO added
We will use the following expression.
n = C × V
n = 8.8 × 10⁻⁸ mol/L × 0.4700 L
n = 4.1 × 10⁻⁸ mol
Step 3: Calculate the mass (m) corresponding to 4.1 × 10⁻⁸ moles of AgO
The molar mass of AgO is 123.87 g/mol.
4.1 × 10⁻⁸ mol × 123.87 g/mol = 5.1 × 10⁻⁶ g
Step 4: Convert "m" to micrograms
We will use the conversion factor 1 g = 10⁶ μg.
5.1 × 10⁻⁶ g × 10⁶ μg/1 g = 5.1 μg
Ответ:
to kill a mockingbird basically is about a lawyer who goes against everything in a racist society like at the time of this novel, to defend a black man accused of sexual abuse. in the bible there are cases like that of joseph, who was accused by the woman of potifar, for a crime similar to that of tim robbinson, of that novel (genesis 39: 1-20). at this point we see that god also provides the escape to joseph, who was accused unjustly, but in his time, and through his attitude, his faith was not shaken, and god provided the solution. the perspective of god also written in the bible and not pay evil with evil. (ephesians 4: 32, 1 thessalonians 5: 15, 1 peter 3: 9). atticus, the lawyer, demonstrated during this lee novel, empathy, love of neighbor, understood the situation of this accused man. he went against everything in that society, and stood in favor of that man, for the injustice committed. this shows the empathy, the love taught by christ, in some passages that speak of love and justice in the sermon of the beatitudes (especially verses 6 and 7 of matthew 5).