Answer:
Synthesis of a Superconductor. The YBa2Cu3O7-x is prepared by grinding the reactants together, strongly heating "calcinating" at 900–950 °C for 8-12 hours, pelletizing the powder mixture, heating or "sintering" the pellet at 950 °C for 12 or more hours, then maintaining the product at 500°C for 12-16 hours.
The best answer would be 60.052 g/mol.
I hope this helps you out.
Answer:
348.9 mL of the 60% solution and 251.1 mL of the 15% solution.
Explanation:
First, we <u>calculate how many mililiters of pure carbonic acid are there in 650 mL of a 38% solution</u>:
Then we can express the sum of both initial solutions as:
- 1) x * 60/100 + y * 15/100 = 247
for the volume of carbonic acid; and
For the volume of the solutions.
We now have a system of two equations and two unknowns (x is the volume of the 60% solution and y is the volume of the 15% solution).
We <u>express x in terms of y</u> in equation 2):
And <u>replace x in equation </u><u>1)</u>:
- (600 - y) * 60/100 + y * 15/100 = 247
Finally we<u> calculate x </u>using equation 2):
I think it is wood burning :)
hope I helped
