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4 years ago

Consider the following mechanism for the reaction between nitric oxide and ozone:

Chemistry

1 answer:

swat324 years ago

6 0

Answer:

A . 2 O₃(g) + 2 NO ⇒ 2 O₂ (g) + 2 NO₂(g)

B . Yes

C. O and NO₃

Explanation:

A. The overall reaction is obtained by adding the individual steps in the reaction mechanism where we will get the reactants and product and the intermediates will cancel.

Thus, adding 1+ 2 +3 we get

2 O₃(g) + 2 NO ⇒ 2 O₂ (g) + 2 NO₂(g)

B. The reaction intermediates are those that are produced from the initial and/or subsequent steps and are consumed later on in the reaction mechanism, but are neither reactants nor products, they just participate.

From this definition it follows that O(g) and NO₃ are reaction intermediates.

C. O and NO₃

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1. An isotope of radon has a half-life of 14 days. A child goes to visit Grandma in Northern Ontario. While playing in the basem

mylen [45]

Given:

Half life of radon t1/2 = 14 days

Initial # atoms of radon, N(0) = 4800

# atoms left after a certain time (Nt) = 75

To determine:

The decay time (t)

Explanation:

The radioactive decay is given by the following equation:-

N(t) = N(0)exp(-kt) -------(1)

where, the exponential decay constant k is given as:

k = 0.693/t1/2 ----(2)

Based on the given data:

k = 0.693/14 = 0.0495 day⁻¹

Substituting k in eq(1)

75 = 4800 exp(-0.0495t)

ln(75/4800) = (-0.0495t)lne

t = 84 days

1 week = 7 days

therefore, 84 days corresponds to: 84 days * 1 week/7 days = 12 weeks

Ans: It will take 12 weeks for the decay of radon from 4800 to 75 atoms

4 0

3 years ago

In a flexible container , 15.9 L of gas is under 589 kPa of pressure at a temperature of 56.5 degrees * C . If the pressure and

amm1812

76.6 litres is the volume of the gas if pressure and temperature changes to STP.

Explanation:

Data given:

Volume of the gas V1 = 15.9 litres

pressure of the gas P1 = 589 kPa or 5.81 atm.

temperature T1 = 56.5 degrees or 329.3 K

Final pressure P2 = 101.3 kPa

Final temperature T2 = 273 K

At STP the pressure is 1 atm or 101.3 kPa and the temperature is 273 K. So from the question the final temperature and pressure is at STP.

from Gas Law:

$\frac{P1V1}{T1}$ = $\frac{P2V2}{T2}$

V2 = $\frac{P1V1T2}{P2T1}$

Putting the values in the above rearranged equation of Gas Law:

V2 = $\frac{589 X 15.9 X 273}{329.3X 101.3}$

= 76.6 Litres

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3 years ago

What is the volume of pure sulfur if its mass is a 130 g and the density is 2.07 g/mL

krok68 [10]

The volume of pure sulfur would be 62.8

6 0

3 years ago

Read 2 more answers

In guinea pigs, black fur is the dominant trait. If a white guinea pig mates with a guinea pig that is heterozygous for its blac

Anon25 [30]

The answer is C, since the black pig is heterozygous, it makes the majority black due to its dominant trait, but about 1 in 5 will be white

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3 years ago

Differentiable surface waves from body waves?

tangare [24]

Body waves travel through the interior of the Earth. On the other hand, surface waves propagate only at the interface between two different media, like the interface between Earth and atmosphere (i.e. the surface of the Earth).

Body waves are of two types: Primary waves (also called P-waves, or pressure waves) and Secondary waves (S-waves, or shear waves).

P-waves are compression waves. They can propagate in solid or liquid material.

S-waves are shear waves. They only propagate in solid material.

By studying the trajectories of S-waves, scientists could prove that the Earth had a liquid outer core.

hope that helps

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3 years ago