Calculate the density, in grams per liter, of a gas at STP if 2.69 L of the gas at 10.7 C and 763.2 mmHg weighs 0.543 g.

the answer to your question is c.

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the dissociation of nickel hydroxide is follows:

the concentration of hydroxide ion is

the equilibrium constant value of nickel hydroxide is = 6.1 * 10^-^1^6 and thus equilibrium equation can be written as:

thus, concentration of ni is 0.23 * 10^-^4 mol /l