Answer:
ethane
Explanation:
Ethane is an organic chemical compound with chemical formula C ₂H ₆. At standard temperature and pressure, ethane is a colorless, odorless gas. Like many hydrocarbons, ethane is isolated on an industrial scale from natural gas and as a petrochemical by-product of petroleum refining
Answer:
There are <span>1.479×<span>10<span>−13</span></span></span> concentration of hydrogen ions <span>mo<span>lL</span></span>.
Explanation:
Because pH is a logarthmic scale, we can use the formula: <span><span>[<span>H+</span>]</span>=<span>10-pH</span></span>. Where...
=> <span>[<span>H+</span>]</span> is the concentration of hydrogen ions in the solution.
=> <span>pH</span> is the pH of the solution.
=> Where 10 is the base of the power - it's a logarithm formula.
We can now just sub in the values and solve for [<span><span>H+</span>]</span>.
<span><span><span>[<span>H+</span>]</span>=<span>10-pH</span></span><span><span>=<span>10<span>−<span>(12.83)</span></span></span></span><span>=1.479108388×<span>10<span>−13</span></span></span></span></span>
We can round (if required) to <span>1.479×<span>10<span>−13</span></span></span>.
Thus, there are <span>1.479×<span>10<span>−13</span></span></span> concentration of hydrogen ions <span><span>mol</span>L</span>.
Hope this helps :)
Answer:
The isotope with mass 6.015amu =7.5% abundance
The isotope with mass 7.016amu = 92.5%
Explanation:
<u>Step 1:</u> Given data
Lithium has an average atomic mass of 6.941 amu
Lithium has 2 isotopos with a mass, respectively 6.015amu and 7.016amu
<u>Step 2: </u>Calculate the abundances
Isotope with mass 6.015 amu has an abundance of X
Isotope with mass 7.016 amu has an abundance of Y
The average atomic mass is the average mass of the isotopes with its respectively abundance.
X+Y = 1 or X = 1 - Y
6.941 = 6.015X +7.016Y
This gives us:
6.941 = 6.015(1-Y) +7.016Y
6.941 = 6.015 - 6.015Y + 7.016Y
6.941 - 6.015 = -6.015Y +7.016Y
0.926 = 1.001Y
Y = 0.925
Y = 92.5%
X = 1- 92.5 = 7.5%
To control we can do the following equation:
6.015*0.075 + 7.016*0.925 = 6.941
This means the abundances of the 2 isotopes are:
The isotope with mass 6.015amu =7.5% abundance
The isotope with mass 7.016amu = 92.5%
The answer is most likely nonmetals. :)
Answer:
Cause its killing all the ocean animals where we people throw the plastic at
Explanation: