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3 years ago

How does the arrangement of particles in a gas differ from the arrangements in liquids and solids?

1 answer:

3 0

The arrangement of particles in a gas is random. they have no orderly arrangement and are free to move around while the particles in solid are in an orderly and rigid arrangement and cannot move about. particles in liquid are also arranged orderly but are not rigid

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The fraction of a radioactive isotope remaining at time t is (1/2)^t/t1/2 where t1/2 is the half-life. If the half-life of carbo

Katena32 [7]

Answer:

a) $1.065\times 10^{-8}$ fraction of carbon−14 in a piece of charcoal remains after 14.0 years.

b) $0.000\times 10^{-3}$ fraction of carbon−14 in a piece of charcoal remains after $1.900\times 10^4 years$

c) $0.0000\times 10^{-4}$ fraction of carbon−14 in a piece of charcoal remains after $1.0000\times 10^5 years$ .

Explanation:

The fraction of a radioactive isotope remaining at time t is given by:

$[A]=\frac{(\frac{1}{2})^t}{t_{\frac{1}{2}}}$

Taking log both sides:

$\log [A]=t\log[\frac{1}{2}]-\log [t_{\frac{1}{2}}]$

[A] = fraction at given time t

$t_{\frac{1}{2}}$ = half life of the carbon−14 =5,730 years

a)When , t = 14 years

$\log [A]=t\log[\frac{1}{2}]-\log [t_{\frac{1}{2}}]$

$\log [A]= 14 years\times (-3010)-\log [5,730 years]$

$[A]=1.065\times 10^{-8}$

b)When , t = $1.900\times 10^4 years$

$\log [A]=t\log[\frac{1}{2}]-\log [t_{\frac{1}{2}}]$

$\log [A]= 1.900\times 10^4 years\times (-3010)-\log [5,730 years]$

$[A]=0.000\times 10^{-3} [/tex$

c)When , t = $1.0000\times 10^5 years$

$\log [A]=t\log[\frac{1}{2}]-\log [t_{\frac{1}{2}}]$

$\log [A]= 1.0000\times 10^5 years\times (-3010)-\log [5,730 years]$

$[A]=0.0000\times 10^{-4}$

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3 years ago

The partial pressure of carbon dioxide in systemic arterial blood is __________. the partial pressure of carbon dioxide in syste

Norma-Jean [14]

In the systemic arteries, the partial pressure of carbon dioxide is 40 mm Hg. Partial pressure of a gas is the contribution of one gas to the total pressure exerted by all gases. Partial pressure of carbon dioxide in arterial blood is the portion of total blood gas pressure that is exerted by carbon dioxide. It decreases during heavy exercise, during rapid breathing, or in association with severe diarrhea, uncontrolled diabetes or the diseases of the kidney. It increases with chest injuries and respiratory disorders. In the systemic arteries, the partial pressure of oxygen is 100 mm Hg.

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3 years ago

Which metal would have more luster, zinc (30) or scandium (21)?

Leya [2.2K]

Answer:

i say zinc would

Explanation:

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What element’s valence electrons are located in 5s25p4?

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The element is TELLURIUM. Tellurium has atomic number 52 with the electronic configuration of [Kr] 4d10 5s2 5p4. The element belongs to group 16 elements on the periodic table. It exhibits various oxidation states: +2, +4, +6, and -2. +4 is its most common oxidation state.

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3 years ago

Name two physical properties that could be used to distinguish between water and ethanol.

miskamm [114]

Answer:

boiling point and melting point.

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