Significant figures are numbers that are higher than 0, and before the decimal.
For example:
12.0, there are only 2 significant figures: 1 and 2. Since 0 is not higher than itself and is after the decimal, it is not a significant figure. Trailing 0’s are not significant. Only zeros that are in between a number are considered significant.
For example: 302 has 3 significant figures.
Answer:
42.8
Explanation:
Let's consider the following reaction at equilibrium.
CO(g) + 2 H₂(g) ⇌ CH₃OH(g)
The concentration equilibrium constant (Kc) is equal to the product of the concentration of the products raised to their stoichiometric coefficients divided by the product of the concentration of the reactants raised to their stoichiometric coefficients.
The concentration equilibrium constant for this reaction is: