My brother daid the answer will be A. Front.
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Answer:
[NaOH] = 0.045 M
[red dye] = 0.031 M
Explanation:
The NaOH and the red dye will not react between them, so, the process that it's occurring is only a dilution. The final volume of the solution will be the volume of the flask, which is 100 mL.
The number of moles (n) of each substance will not vary, and it's calculated by the multiplication of the concentration (C) by the volume (V). If 1 is the initial solution, and 2 the diluted:
n1 = n2
C1*V1 = C2*V2
For NaOH:
C1 = 0.150 M
V1 = 30.0 mL
V2 = 100 mL
0.150*30 = C2*100
100C2 = 4.5
C2 = 0.045 M
For the red dye:
C1 = 0.125 M
V1 = 25.0 mL
V2 = 100 mL
0.125*25 = C2*100
100C2 = 3.125
C2 = 0.031 M
Answer : The mass of carbon required is, 309.4 grams.
Explanation : Given,
Mass of oxygen = 1100 g
Molar mass of oxygen = 16 g/mol
Molar mass of carbon = 12 g/mol
First we have to calculate the moles of oxygen.
Now we have to calculate the moles of carbon.
Moles of carbon =
Moles of carbon =
Now we have to calculate the mass of carbon.
Thus, the mass of carbon required is, 309.4 grams.
Answer:
The correct answer is "D".
Explanation:
The synthesis consists of extracting the most important data from a text or any source of information. To be able to synthesize it is necessary to read, understand and interpret the message or arguments presented. Once these factors have been extracted, they are brought together to form a coherent text that in a few words explains the original text.
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