If you want a reaction to happen more quickly, what do the particles inside the reaction need to do?
1 answer:
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The rate at which radioactive substances disintegrate is a constant for a
given radioactive material.
- <u>The fossil is 710 million years old</u>.
Reasons:
The half-life of a radioactive material is the time it takes half of the nucleus
of a radioactive material to disintegrate into other forms of materials
through the given off of energy and particles.
The half life of Uranium 235 = 710 million years
The product of the decay of Uranium 235 = Lead 207
The mass of Uranium 235 in the fossil = 4 micrograms
The mass of Lead 207 in the sample = 4 micrograms
Therefore, the mass of Lead 207 in the fossil is equal to the mass of
Uranium 235, therefore, a minimum of half of the Uranium 235 has
decomposed, which gives;
The time of decomposition of the Uranium 235 = 1 Half life = 710 million years
The age of the fossil = The time in which the Uranium has been
decomposing = The time of decomposition = 1 half life of Uranium 235 = 710
million years
- <u>The age of the fossil = 710 million years</u>
Using the formula for half-life, we get;
The fossil contains initially only Uranium 235 with a minimum mass of 4 mg
+ 4 mg = 8 mg, which gives;
N₀ = 8 mg
N(t) = The current mass of Uranium 235 = 4 mg
= 710 million years
Therefore;
t = 710
- <u>The age of the fossil, </u><u><em>t</em></u><u> = 710 million years</u>
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Answer:
- Bucket liner: a second layer of protection in the hazardous waste containers; they should be sealed with a knot.
- Hazardous bucket label: identifies facility and waste information and must be placed on used hazardous waste containers.
- Zip-tie tags: these are used to close and label bucket liners.
- Chemical bags: plastic bags used to store hazardous waste. They have a zip-type closure and should only store one hazardous waste item.
- Hazardous waste management chart: a job aid which displays how to determine a spill category and how to store hazardous waste until it is picked up.
Explanation:
Hello,
Hazardous waste is a type of waste that could be harmful for the health or the environment . Such waste could exhibit the following threats: ignitability , reactivity , corrosivity and toxicity
Hazardous wastes may be found in gaseous, liquid or solid forms. They can not be disposed of by typical methods like other by-products of our daily life. Based on the physical state of the waste, treatment and solidification processes might be required.
For the given options on the attached picture, each items match as follows:
- Bucket liner: a second layer of protection in the hazardous waste containers; they should be sealed with a knot.
- Hazardous bucket label: identifies facility and waste information and must be placed on used hazardous waste containers.
- Zip-tie tags: these are used to close and label bucket liners.
- Chemical bags: plastic bags used to store hazardous waste. They have a zip-type closure and should only store one hazardous waste item.
- Hazardous waste management chart: a job aid which displays how to determine a spill category and how to store hazardous waste until it is picked up.
Best regards.
