Answer:
heat transfer by thermal energy
Explanation:cause thermal is hot air so heat transfer by thermal
Atoms are the smallest division of the element. The potassium atoms present in the 235 gm of the compound is atoms.
<h3>What is the number of atoms?</h3>
Given,
- Mass (m) of Potassium sulfide = 235 gm
- Molar mass (M) of Potassium sulfide = 110.26 g/mol
Calculate the number of moles as:
In the given compound , there are two atoms of potassium and one atom of sulphur.
If, 1 mole = atoms of potassium
Then, 2.13 moles = X atoms
Solving for X:
Therefore, option c. is correct.
Learn more about atoms here:
brainly.com/question/11411852
Answer:
Explanation:
Well, looking at your units only, considering that every mole has a mass of 180 g., I would do:
360/180=2mol
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 :)