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The answer is 18 since the atomic number of Potassium is 19.
Mathematically,
= 19 - 1
= 18
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Ionic charge for potassium?
Potassium is a Group (I) metal. All Group(I) metals ionise to M^+ So potassium becomes K^+. Its ionic charge is '+1'.
Is potassium a physical or chemical change?
Potassium is not a change; potassium (K) is a chemical element.
What is 100 minus one minus one minus one minus one minus one minus one minus one minus one minus one minus one minus one minus one minus one minus one minus one minus one minus one minus one?
82
What is one hundred minus one minus one minus one minus one minus one minus one minus one minus one minus one?
91
What is K plus and OH minus when together?
KOH or potassium hydroxide or potash lye.
Why is it difficult to determine the enthalpy change of thermal decomposition of potassium hydrogencarbonate to potassium carbonate?
The reaction which forms potassium hydrogen carbonate from potassium carbonate, K2CO3 + H2O + CO2 --> KHCO3 is difficult to perform in a laboratory; the same goes for the decomposition. Hence instead of simply using a calorimeter or similar apparatus, it is necessary to use another reaction route and a Hess Cycle using two reactions such as: reaction A: K2CO3 + 2HCl --> 2KCL + H2O +CO2 reaction B: KHCO3 + 2HCl --> KCl + H2O +CO2 The enthalpy change of the decomposition of potassium hydrogen carbonate will be twice the enthalpy change for reaction B, minus the enthalpy change for reaction A.
Potassium cholrate decomposes to potassium chloride and oxygen gas is it a chemical change?
It is a chemical change. 2KClO3 ----> 2KCl + 3O2
Can potassium deficiency cause a flower to wither?
Potassium deficiency is one of the main nutritional disorders in plants. You need to change your soil as soon as possible to prevent your plant from dying.
Does antibiotics affect potassium?
Only some antibiotics can increase potassium in your body. Sulfamethoxazole/Trimethoprim (Septra or Bactrim) and pentamidine have been known to increase potassium levels. If you are not taking either of those, your antibiotics should no effect on your potassium. If you are taking one of these drugs and your potassium levels are already high, you should contact your doctor and see if he or she wants to change your antibiotic to a different one.
What is negative 4 minus positive 21?
the answer of negative 4 minus positive 21 is positive 25 because you leave the negative 4 as is, change the minus to a plus, and change positive 21 to negative 21. (Leave Change Change)
What is negative one minus two?
2-(-1)= 2+1= 3 When a parenthesis is preceded by a minus sign, remove the parentheses and the minus sign before the parentheses and change the sign of each term within the parentheses. When a parenthesis (-1) is preceded by a minus sign, -(-1) remove the parentheses ( ) and the - sign before the parentheses and change the sign of each term -1 within the parentheses +1
How many atoms are in one unit of potassium iodine?
Potassium iodide is two atoms, one of potassium and one of iodine.
