Sodium carbonate reacts with HCI to produce carbon dioxide gas, water, and sodium chloride. Balance the equation to help you solve the problems below. How many grams of sodium carbonate are needed to produce 100. mL of carbon dioxide gas at 42\deg C and 944 mm Hg pressure? It requires 62.3 mL of HCI solution to react with the sodium carbonate. What is the molarity of the HCl solution?

How many mg in 1.35 g ? Report your answer to 3 decimal places (examples 1.042, 0.050, 0.198, 3.000).

If 5.0 g of calcium hydroxide are needed, how many moles of magnesium hydroxide would be produced? Is a mole to mole ratio needed? If YES, what is it?

The kinetic data in the following table were obtained for the reaction of carbon dioxide and water to produce bicarbonate and hydrogen ion catalyzed by carbonic anhydrase. H2O + CO2--> HCO3 + H+ Carbon Dioxide Concentration (mmol L-') 1.25 2.5 5.0 20.0 1/Velocity (M'sec) 36 x 10³ 20 x 10³ 12 x 10³ 6 x 10³ [H. DeVoe and G. B. Kistiakowsky, J. Am. Chem. Soc. 1961 83 (2), 274-280.] Use Excel (or similar) to generate a Line Weaver-Burke plot, then use the equation for a linear-fitted trend line to calculate the substrate affinity of CO2 for carbonic anhydrase. Answer in units of mM. Enter numerical values only, no letters or symbols. Round answer to 2 significant figures.

The following data give the constant dissociation, Ka (for acetic acid at various temperatures): T(°C) 0 Ка 1.657 x 10-5 10 1.729 x 10-5 15 1.745 x 10-5 25 1.753 × 10-5 kJ ΔΗ° = 1.53 mol Submit Previous Answers Part B Correct Plot Inka vs. 1/T and fit a line to the points. The slope will correspond to —▲H° / R. 1/T InKa 3.66 x 10-3-11.01 3.53 x 10-3-10.97 3.47 x 10-3-10.96 3.36 × 10-3-10.95 InKa = (−184 K) (±) — 10.3 = slope -184 K = AH° R AH° -184 K = 0.008314 kJ/(mol·K) AH 1.53 kJ/mol = Use these data, and the constant dissociation at 25 °C, to calculate AS° for acetic acid ionization. (InK Express your answer with the appropriate units. μÅ AS° = Value Units ? -AH° + ᎡᎢ. AS° R

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If 46.5 mol of an ideal gas occupies 95.5 L at 373 K, what is the pressure of the gas? pressure: I atm

Write the equation for the dissociation (separation) of water and label the hydrogen & hydroxide ions?

(please type answer no write by hend)

Determine and report the pressure of collected hydrogen gas in atmospheres. Report this result to one more digit than allowed by applying the rules of significant figures. (1 atm = 760 mm Hg, an exact conversion factor.) Determine the moles of hydrogen collected by substituting the appropriate quantities into the ideal gas equation and solving. Report this result to one more digit than allowed by applying the rules of significant figures. Notes: the gas temperature is the same as the listed temperature; R = 0.082057 L-atm/mol-K. Be mindful of units. Determine the experimental atomic mass of Cu. Round this result to the correct number of significant figures. Determine the percent relative error (= ????????????−?h????????? ? 100). The molar mass of Cu is 63.546 g/mol. Mass of copper before electrolysis 6.008 g Mass of copper after electrolysis 5.860 g Volume of H2 collected 58.9 mL Pressure of H2, PH2 720.8 mm Hg Temperature 24.0 oC