Answer would be B. I provided work on an image attached. Message me if u have any other questions on how to do it
A sample of water with a mass of 587.00 kg is heated with 87 kJ of energy to a temperature of 518.4 K. The specific heat of wate
r is 1 J-1 kg K-1. What is the initial temperature of the water?
2 answers:
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Answer:
Mole fraction of methanol will be closest to 4.
Explanation:
Given, Mass of methanol = 128 g
Molar mass of methanol = 32.04 g/mol
The formula for the calculation of moles is shown below:
Thus,
Given, Mass of water = 108 g
Molar mass of water = 18.0153 g/mol
The formula for the calculation of moles is shown below:
Thus,
So, according to definition of mole fraction:
<u>Mole fraction of methanol will be closest to 4.</u>
Answer:
The total amount of Au is $
Explanation:
Given that,
Mass of 1.0 ml of Au
Total volume of water in oceans
We need to calculate the volume in ml
Using given volume
We need to calculate the total mass of Au
Using given data
So, The total mass of Au is
The mass will be in ounce,
The total amount of the Au Will be
Hence, The total amount of Au is $