<u>Answer:</u> The half life of the reaction is 593.8 seconds
<u>Explanation:</u>
We are given:
Rate constant =
The formula for determining the unit of 'k' is:
where, n = order of reaction
The unit of concentration is, M or mole/L
The unit of time is, second or 's'
Evaluating the value of 'n' from above equation:
The reaction is zero order reaction.
The equation used to calculate half life for zero order kinetics:
where,
k = Rate constant =
= initial concentration = 1.90 mol/L
Putting values in above equation, we get:
Hence, the half life of the reaction is 593.8 seconds
<u>Answer:</u> The correct answer is 0.745 km
<u>Explanation:</u>
We are given:
A numerical value of 815 yards
To convert this into kilometers, we use the conversion factor:
1 km = 1093.6 yards
Converting the given value into kilometers, we get:
Hence, the correct answer is 0.745 km
Psychochemical may persist for hours or days after exposure.
<h3>
Psychochemical </h3>
Chemical substances that have brief, reversible effects on the body or mind are known as psychochemical agents, often known as incapacitating substances. Psychochemical agents have a longer-lasting effect than riot-control chemicals, which only have a few-minute duration. Central nervous system (CNS) stimulants and depressants both fall within the category of psychochemical substances.
Drugs that depress the central nervous system (CNS) prevent the CNS from functioning and prevent information from traveling across neuron synapses. 3-Quinuchdedinyl Benzilate is an illustration of this group of chemicals, and it has an impact on memory, problem-solving, focus, and instruction-listening abilities. Instead of affecting one's ability to think, cannabinoids and phenothiazines cause sleepiness and a lack of motivation. Although 10,000 times more strong than morphine, fenyls are opiates that have a similar effect.
Learn more about Psychochemical here:
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By increasing Atomic number
11.2L x 1mol/22.4L= 0.5 mol