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AleksAgata [21]
3 years ago
15

What Is Matter? Someone help me plzzz

Chemistry
1 answer:
adelina 88 [10]3 years ago
3 0

Answer:

matter is anything with mass and volume

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Look at the questions below and decide which is declarative.
Yuliya22 [10]
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The amount of 217 mg of an isotope is given by A(t) = 217 € -0.0171, where t is time in years since the initial amount of 217 mg
Maru [420]

The amount left after 20 years = 154.15 mg

<h3>Further explanation </h3>

The atomic nucleus can experience decay into 2 particles or more due to the instability of its atomic nucleus.  

Usually radioactive elements have an unstable atomic nucleus.  

The main particles are emitted by radioactive elements so that they generally decay are alpha (α), beta (β) and gamma (γ) particles  

The decay formula for isotope :

\tt \large{\boxed{\bold{A(t)=217e^{-0.0171t}}}

Then for t=20 years, the amount left :

\tt A(t)=217e^{-0.0171\times 20}\\\\A(t)=154.15~mg

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3 years ago
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what does it mean when the h3o+ to x- distance doesn't change much as the first 4 to 5 water molecules are added
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If X is an equivalent base to H₂O
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The correct response or this is 
X⁻ is a stronger base than H₂O
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