Because there are so many different values of numbers, it would be impractical to use 1Ω, 2Ω, 3Ω... etc... Using colored bands helps make reading it a little easier to the trained eye. There are hundreds of thousands, if not tens of millions of different resistors would need to exist to cover every value. So you just use something called "preferred values" with their resistance values posted on them instead.
Answer:What should you do if you realize during research that your original theory is wrong
Explanation:
Answer:
a) 0.100 M
b) 0.395 M
Explanation:
a) Calculate the molarity of a solution that contains 0.200 moles of NaOH (solute) in 2.00 L of solution
We will use the following expression for molarity.
[NaOH] = moles of solute / liters of solution
[NaOH] = 0.200 mol/2.00 L = 0.100 M
b) Calculate the molarity for a solution that contains 15.5 g of NaCl (solute, 58.44 g/mol) in 671 mL of solution
We will use the following expression for molarity.
[NaCl] = mass of solute / molar mass of solute × liters of solution
[NaCl] = 15.5 g / 58.44 g/mol × 0.671 L = 0.395 M
The universe includes galaxies, the solar system, and planets. The accelerated expansion of the universe was provided by the Supernova Cosmology Project and High-Z Supernova Search Team. Thus, option B is correct.
<h3>What is Supernova Cosmology Project?</h3>
The Supernova Cosmology project in 1998, was to show the acceleration of the Universe's expansion. This project studied the acceleration rate of the universe that was expanding at a constant rate.
The Viking and Voyager missions were the first successful landing of spacecraft on the moon's surface. That didn't provide any information on the universe.
Therefore, option B. Supernova Cosmology Project provided evidence of the expansion.
Learn more about Supernova Cosmology Project here:
brainly.com/question/12534160
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