Answer:
Geiger-Mueller tube or Geiger counter and a Personal Radiation Detector (PRD).
Explanation:
In order to immediately detect traces and signs of radiation leaks in the nuclear power plant, the supervisor must use two devices that readily give its results. These devices could be a Geiger-Mueller tube or Geiger counter and a Personal Radiation Detector (PRD). A PRD has a very fast response time, while a Geiger counter also displays results real time.
There are approximately 4.52 x 10^23 atoms in 0.750 moles of zinc.
To determine the number of atoms in a given amount of a substance, you can use Avogadro's number, which is approximately 6.022 x 10^23 atoms/mol.
Given that you have 0.750 moles of zinc, you can calculate the number of atoms using the following steps:
Multiply the given number of moles by Avogadro's number:
0.750 moles * (6.022 x 10^23 atoms/mol) = 4.5165 x 10^23 atoms
Round the result to an appropriate number of significant figures:
Since the value given has three significant figures, the final answer should be rounded accordingly. Therefore, the number of atoms in 0.750 moles of zinc is approximately 4.52 x 10^23 atoms.
So, there are approximately 4.52 x 10^23 atoms in 0.750 moles of zinc.
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Answer: The v/v in percent of diethyl ether in a solution is 2%.
Explanation:
To calculate the percentage volume by volume of a solute in a solution, we use the formula:
We are given:
Volume of solute = 50 mL
Volume of solution = 2.5 L = 2500 mL (Conversion factor: 1 L = 1000 mL)
Putting values in above equation, we get:
Hence, the v/v in percent of diethyl ether in a solution is 2%.
Answer :
Explanation : We need to simply calculate the division for finding the correct answer and which can be expressed in scientific notation.
The answer on solving will be.
Simple division method was used to find out the answer.
n-butane
All of these
n-pentane
n-hexane
The question is asking about the mathematical relationship between mass, volume and density in Physics, which is represented by the formula D = m/V; this formula is essential in various physics computations.
The relationship between the mass (m) of a material, its volume (V), and its density (D) is represented by the formula D = m/V. This is a fundamental concept in Physics, specifically in areas involving fluid mechanics and material science. If you know the mass and volume of a material, you calculate its density using this formula, and decipher a lot about the material's properties from the result of this calculation.
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