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For the reaction 2CH2O(g) + O2(g) ? 2HCOOH(l), if 4.19 × 1022 molecules of formaldehyde (CH2O) react with excess oxygen, what is the theoretical yield of formic acid (HCOOH)?
How much heat is evolved when 1235 g of water condenses to a liquid at 100°C? ΔHcond = -40.7 kJ/mol.
The Label on a one pint bottle of water lists the following components. If the density is the same as pure water and you drink 3 bottles of water in one day, how many milligrams of each component will you obtain?
a gas sample containing 1.50 mol at 25 exerts a pressure of 400 torr. some gas is added to the same container and the temperature increased to 50 C. If the pressure increases to 800. torr, how man moles of gas were added to the container? assume a..
If Sodium hydroxoide has a H+ of 4.2 x 10^ -10, then what is its OH- , pH, and pOH? If hydrochloric acid has a pOH of 11.5, then what is its pH, OH-, and H+? If potasssium hydroxoide has a pH of 2.5, then what is its H+, OH-, and pH?
Calculate the concentration of acid(or base) remaining in solution when 5.39mL of 6.93M HNO3 is added to 9.37mL of 8.37M NaOH. Note the final volume is the sum of two added volumes. which of the following statement is true for the solution after m..
In a titration, 10.0 mL of 0.025 M hydrochloric acid is added to 30.0 mL of 0.030 M ammonia. What is the pH of the resulting mixture?
To identify a diatomic gas (x2), a researcher carried out the following experiment: She weighed an empty 4.8- bulb, then filled it with the gas at 1.40atm and 20.0 degC and weighed it again. The difference in mass was 7.9g . Identify the gas. Expr..
The vapor pressure of water at 25 o C is 23.8 mm Hg. a. Write the balanced chemical equation. b. Calculate the mass (in grams) of zinc metal that was consumed in the reaction.
What is the cell voltage when the following volumes of 0.640 M NaBr have been added? 1.0 ml, 13.0 ml, 20.6 ml, 21.5ml, 34,5ml, 43.1ml, 47.5ml.
if 77.0 ml of hydrogen gas is collected over water at 50.0 degrees celsuis and 763 mm hg what is the volume of dry gas
Acetylene gas (C2Hs) is produced as a result of the reaction CaC2(S)+2H2O(l)-> C2H2(g)+Ca(OH)2(aq).
What volume of oxygen is needed to react with solid sulfur to form 6.20 L of sulfur dioxide?
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