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2 years ago

What is specific heat capacity?

Chemistry

1 answer:

astraxan [27]2 years ago

4 0

Answer:

The energy needed to change the temp of a substance

Explanation:

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A cloud that forms near the ground

stiks02 [169]

Hey there!
Great question=)

Answer:Fog, these are clouds that form near the ground.

I hope this helps;)

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3 years ago

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If a substance has a half life of 58 years and starts with 500 g radioactive, how much remains radioactive after 30 years?

Vilka [71]

Answer:

A = 349 g.

Explanation:

Hello there!

In this case, since the radioactive decay kinetic model is based on the first-order kinetics whose integrated rate law is:

$A=Ao*exp(-kt)$

We can firstly calculate the rate constant given the half-life as shown below:

$k=\frac{ln(2)}{t_{1/2}} =\frac{ln(2)}{58year}=0.012year^{-1}$

Therefore, we can next plug in the rate constant, elapsed time and initial mass of the radioactive to obtain:

$A=500g*exp(-0.012year^{-1} *30year)\\\\A=349g$

Regards!

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3 years ago

Someone help me pleasee?

Kamila [148]

Maybe its the second one

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3 years ago

When the energy is removed what will happen to a gas?

creativ13 [48]

Answer:

Hey mate 
I hope it helps

Explanation:

<h3>Removing Energy: Removing energy will cause the particles in a liquid to begin locking into place. A. Boiling and Evaporation: Evaporation is the change of a substance from a liquid to a gas. Boiling is the change of a liquid to a vapor, or gas, throughout the liquid.</h3>

<h2>PLZ MARK ME AS BRAIN LIST </h2>

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3 years ago

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Of the groups below, which are the least chemically reactive?

seropon [69]

It is actually Group 3A elements. I just took the test.

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3 years ago