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ASHA 777 [7]
3 years ago
9

An example of a physical property of an element is the element's ability to

Chemistry
2 answers:
patriot [66]3 years ago
6 0

Answer:

what is it ???? I need help to

FromTheMoon [43]3 years ago
4 0

Answer:

dissolve

Explanation:

When it dissolves , no chemicals are formed and it is considered as a physical property.

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It is found that a gas undergoes a first-order decomposition reaction. If the rate constant for this reaction is 8.1 x 10-2 /min
kap26 [50]

Answer:

28.43 min

Explanation:

Using integrated rate law for first order kinetics as:

[A_t]=[A_0]e^{-kt}

Where,  

[A_t] is the concentration at time t

[A_0] is the initial concentration

Given that:

The rate constant, k = 8.1\times 10^{-2} min⁻¹

Initial concentration [A_0] = 0.1 M

Final concentration [A_t] = 1.0\times 10^{-2} M

Time = ?

Applying in the above equation, we get that:-

1.0\times 10^{-2}=0.1e^{-8.1\times 10^{-2}\times t}

0.1e^{-8.1\times \:10^{-2}t}=10^{-2}

e^{-8.1\times \:10^{-2}t}=\frac{1}{10}

\ln \left(e^{-8.1\times \:10^{-2}t}\right)=\ln \left(\frac{1}{10}\right)

t=28.43\ min

3 0
3 years ago
Each of the four molecules has a different shape.which shape produces a polar molecule
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What are groups on the periodic table? How many are there?
Amiraneli [1.4K]

Explanation:

Groups are numbered 1–18 from left to right. The elements in group 1 are known as the alkali metals; those in group 2 are the alkaline earth metals; those in 15 are the pnictogens; those in 16 are the chalcogens; those in 17 are the halogens; and those in 18 are the noble gases.

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3 years ago
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Lab Report
Diano4ka-milaya [45]

Answer:

The purpose of the experiment is to see how water of different temperature and salinity affect the density.

Explanation:

Temperature and salinity directly affect the density of the water. Water of low temperature is more dense than water of high temperature, BUT, (fresh)water with no salt is less dense than (sea)water with more salt, so temperature and salinity change density of water.

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2 years ago
Planes X and Y and points C, D, E, and F are shown.
Citrus2011 [14]

Answer:

The line drawn through points D and E.

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Y is a horizontal line and D and E are both on the same line. If a line were drawn it would be within the Y plane.

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