For the reaction

H2(g) + CO2(g) ⇆ H2O(g) + CO(g)

at 700°C, Kc = 0.534. Calculate the number of moles of H2 that are present at equilibrium if a mixture of 0.680 mole of CO and 0.680 mole of H2O is heated to 700°C in a 70.0−L container.

Which type of substance ionizes partially and gives off hydrogen ions when dissolved in water? a. strong acid b. strong base c. weak acid d. weak base

Calculate the number of kilojoules to warm 125 g of iron from 23.5°c to 78.0°c.

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line