There is no such compound as k2S. But the % composition of K2S (potassium sulfide) is as follows:
2 K = 2 x 39 = 78
S = 32
Total mass = 78 + 32 = 110 g
%K = 78/110 (x100) = 70.9 % K
%S = 32/110 (x100) = 29.1 % S
Formula for potassium sulfide is K2S.
K2S + 2HCl --> 2KCl + H2S
K2S or potassium sulfide is an ionic compound.
The percent composition of nitrous oxide is: - N: 63,649 % - O: 36,351 %
K2S will have high boiling point than CH3Cl.
Formula for potassium sulfide is K2S.
K2S + 2HCl --> 2KCl + H2S
The percent composition of lithium in LiOH is: 29,21 %.
Can you be more specific? Percent composition is usually the percent of an element in a compound.
K2S or potassium sulfide is an ionic compound.
Percent composition is usually expressed as a percent by mass, but in the case of gases and vapors, it is often expressed as a percent by volume.
The percent composition of ethanol is: - C: 52,13 % - O: 34,74 % - H: 13,13 %
The percent composition of nitrous oxide is: - N: 63,649 % - O: 36,351 %
The percent composition of manganese dichoride (MnCl2) is: - Mn: 44 % - Cl: 56 %
If you have 2 moles of K+ for every mole of K2S and Molarity (M) is Moles per Liter. Then you know that you have .30 M of K2S. The way that you do that is setting up a series of conversion factors like so:(.15moles k2s/liter) x (2 moles of K/ 1 mole of K2S) = .30 moles k/ liter.The moles of K2S cancel out and you are left with moles of K per liter.
K2S will have high boiling point than CH3Cl.
Potassium has a formal charge of +1, and sulfide has a formal charge of -2, so: K2S