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Semmy [17]
4 years ago
12

A chemical equation is balanced when the

Chemistry
2 answers:
Arada [10]4 years ago
7 0

a balanced chemical equation occurs when the number of the atoms involved in the reactants side is equal to the number of atoms in the products side.

kolezko [41]4 years ago
7 0

Answer:

A balanced chemical equation is balanced when the number of the different atoms of elements in the reactants side is equal to that of the products side. Balancing chemical equations is a process of trial and error.

Explanation:

2 H_{2} + 1 O_{2} = 2 H_{2} O

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Gasses contain highly energetic particles which tend to spread out to fill the room/ container they are in. Often when a smell rises, there is a high concentration of gas molecules in the rising smell. Here diffusion occurs where the molecules spread out randomly moving from an area of high concentration of gas molecules to areas of low gas molecules.  
5 0
3 years ago
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What is the half-life of an isotope that decays to 12.5% of its original activity in 19.8 hours?
katen-ka-za [31]
x= x_{0}  e^{kt} ,where~ x ~is~ the ~ |amount\ of \material\ at\ any~~time~t

and~ x_{0} ~the~original~amount.
when~x=  \frac{12.5}{100} x_{0}  }= \frac{125}{1000}  x_{0}
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when t=19.8 hrs,
x= x_{0}  e^{19.8 k}, 
 \frac{x}{ x_{0} } = e^{19.8 k}, 
 \frac{1}{8} = e^{19.8k} ,
ln \frac{1}{8} =19.8 k,

ln1-ln8=19.8k,
0-ln 2^{3} =19.8 k,
-3 ln2=19.8k
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\frac{1}{2} = e^{ \frac{- ln2}{6.6}t } = \frac{1}{ e^{ \frac{ln 2}{6.6} t} } ,
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8 0
4 years ago
With solutions of strong acids and strong bases the word strong refers to
Anastaziya [24]
The answer is degree of ionization. I'm guessing you have already taken the quiz. 
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3 years ago
What is the similarity between a modern computer and older computer ?
const2013 [10]

New computers are faster and more efficient.

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6 0
4 years ago
Why don't polar molecules and nonpolar molecules mix?
Bad White [126]

Solution:

By the following ways the polar molecule doesn’t mix with non-polar molecule  

Polar molecules have a portion of their molecule which, relative to the rest of the molecule, is more negative.  

Water, for example, has a bent, or V-shape, due to the 2 lone electron pairs on oxygen. This makes the oxygen end more negative than the hydrogen end. This negative area allows for hydrogen bonding between that molecule and other molecules which are also polar.  

Non-polar molecules don't have a portion of the molecule which is more negative than the rest. An example of this is a hydrocarbon, like butane. Because there is no relatively negative region to the molecule, it cannot partake in hydrogen bonding and therefore does not mix with polar molecules.  

Thus we can conclude that Polar mixes with polar; non-polar mixes with non-polar.


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4 years ago
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