Aqueous sulfurous acid (H2SO3) was made by dissolving 0.200 L of sulfur dioxide gas at 19°C and 745 mmHg in water to yield 500.0 mL of solution. The acid solution required 16.4 mL of sodium hydroxide solution to reach the titration end point. What was the molarity of the sodium hydroxide solution? M NaOH

What volume of H2 gas (in liters), measured at 21°C and 710 . torr, can be obtained by reacting 4.78 g of zinc metal with 141 mL of 0.281 M HCl? The equation is: Zn(s) + 2HCl(aq) → ZnCl2(aq) + H2(g)

Find the volume in liters of carbon dioxide gas (CO2) produced at 1.00 atm pressure and 25.0 ∘C from 5.37 mL of 1.00 M HNO3(aq) solution with an excess of sodium carbonate (Na2CO3) according to the unbalanced reactionHNO3(aq) + Na2CO3(aq) → NaNO3(aq) + H2O(l) + CO2(g) Give the answer with 3 or more significant figures.

How many grams of sodium hydrogen carbonate decompose to give 20.8 mLmL of carbon dioxide gas at STP? 2NaHCO3(s)⟶ΔNa2CO3(s)+H2O(l)+CO2(g)

1) a) Sulfuric acid, the industrial chemical produced in the greatest quantity each year, is prepared by the reaction of sulfur in the presence of oxygen and water as described in the balanced chemical equation below. Calculate the volume, in ml, of 18.0 M sulfuric acid solution that can be prepared from the reaction of 1850 g of sulfur with 6.50x10'mL oxygen gas at 25°C and 0.965atm and plenty of water. 25(solid) + 302 (gas) + 2H20(liquid) _-→ 2H2SO4(aqueous) b. Which substance is the limiting reactant? Explain how you know.

What volume of carbon dioxide gas (in mL) at 835 mm Hg and 37 °C can be produced when 2.4 g of CaCO3(s) are put into an Erlenmeyer flask containing 108 mL of 0.152 M HCl(aq) ?1 CaCO3(s) + 2 HCl(aq) → CaCl2(aq) + CO2(g) + H2O(l)

Hi! I am unsure of how to solve this problem. Thank you!

What is the volume @ STP of 3.29x10^25 molecules of CO2? Round to 2 decimal places.

The human body burns glucose (C6H12O6) for energy according to this chemical reaction: C6H12O6+6O2→ 6CO2+6H2O The products of the reaction are carbon dioxide CO2 and water H2O Interestingly, all of the carbon dioxide and much of the water exits the body through the lungs: on every breath, the average person exhales 500.mL of air, which is typically enriched to 4% CO2 and 5% water vapor by volume. In short, when a person loses weight by dieting, the weight that is lost actually departs his body as a gas, every time he exhales. Each kilogram of body fat lost requires exhaling about 2.9kg of carbon dioxide. Calculate how many breaths it takes an average person to "exhale" 0.50kg  of fat. Round your answer to the nearest thousand. You'll need to know that the density of CO2 is 2.0 kg/m^3 .

H2S (g) can be generated by the following reaction: 2 HCl(aq) + FeS(s) → FeCl2(aq) + H2S(g) What volume (at STP) of H2S gas can be generated from 13.6 mL of 0.445 M HCl and an excess of FeS? V = ___ mL