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.
There are two cations in K2S. Potassium (K) has a +1 charge, so there are two potassium (K) cations in the compound K2S.
The correct name for the compound K2S is potassium sulfide.
The percent composition of lithium in lithium bromide (LiBr) is approximately 7.7%. The percent composition of bromine in lithium bromide is approximately 92.3%.
The percent composition of C5H12 is: carbon (C) = 83.78%, hydrogen (H) = 16.22%.
Formula for potassium sulfide is K2S.
There are two cations in K2S. Potassium (K) has a +1 charge, so there are two potassium (K) cations in the compound K2S.
The correct name for the compound K2S is potassium sulfide.
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.
The percent composition of lithium in lithium bromide (LiBr) is approximately 7.7%. The percent composition of bromine in lithium bromide is approximately 92.3%.
The percent composition of C5H12 is: carbon (C) = 83.78%, hydrogen (H) = 16.22%.
To find the percent composition of each element in the compound, you first calculate the molar mass of Be (9.01 g/mol) and I (126.90 g/mol). Then, calculate the percent composition of each element by dividing the mass of the element by the total molar mass of the compound and multiplying by 100. The percent composition of Be is 5.14% and the percent composition of I is 94.86%.
To find the percent composition, first calculate the total mass by adding the masses of Argon and Sulfur. Then, determine the percent composition of each element by dividing the mass of that element by the total mass and multiplying by 100. In this case, the percent composition of Argon is about 87.1%, and the percent composition of Sulfur is about 12.9%.
It is K2S.
The percent composition of calcium fluoride is approximately 51.1% calcium and 48.9% fluorine.
Sodium bromide has a percent composition of approximately 22.8% sodium and 77.2% bromine.
The percent composition of Cr2O3 is approximately 68% Chromium (Cr) and 32% Oxygen (O).