Find the pH of the equivalence point and the volume (mL) of 0.0716 M KOH needed to reach the equivalence point in the titration of 23.4 mL of 0.0390 M HNO₂. LOH Volume: 12.7 pH = 12.4 X

8-7. Suppose a 185 gram sample of hydrogen reacts with an excess of nitrogen dioxide as follows: 2 NO2 (g) + 7 H2 (g) → 2 NH3 (g) + 4 H2O(g) Both products are collected together (separate from any remaining reactants) in a 325 liter vessel at 512 K. a. How many moles of ammonia gas are produced? b. How many moles of water vapor are produced? c. What is the total pressure in the product collection vessel after the reaction is complete?  8-8. Suppose 93.4 grams of aluminum sulfide are added to 5.00 liters of a 0.844 M hydrochloric acid solution and the following reaction takes place: 6 HCl (aq) + Al2S3 (s) → 3 H2S (g) + 2 AlCl3 (aq) a. Which reactant is the limiting reactant? b. Briefly explain how you know which reactant is limiting. Be specific. Use complete sentences. c. What volume of hydrogen sulfide gas is collected at STP? d. How many grams of aluminum sulfide will be left over at the end? e. What is the final molarity of HCl?

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

Assume all reations involving gases proceed at STP.  1) 2Li + 2 H2) 2 LiOH +H2... If 4.4247 moles of Li are reacted, how many moles of LiOH will be reducd?

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

10-53 A diver, originally 20 m below the sur- face, ascends, expelling air as she rises to keep her lung volume constant. The air bubbles rise faster than she does. If her lung volume is 2.4 litres, what is the total volume of expelled air in the bubbles at the water surface? (The pressure changes by l'atm for each 10.3 m of depth change in water)

Chemistry helpppp.

Please answer the question and show your work.  6a.  A helium balloon was partially filled with 8,000 ft3 (cubic feet or ft3, is a unit of volume) of helium gas when the atmospheric pressure was 0.98 atm and the temperature was 23 °C.  The balloon rose to an altitude where the atmospheric pressure was 400 mm Hg and the temperature was 5.3 °C.  What volume in ft3 did the helium gas occupy at this altitude?

Question 18 of 25 Submit How many liters of H2 gas would be produced by the complete reaction of 2.93 g of Al solid at STP according to the following reaction? Remember 1 mol of an ideal gas has a volume of 22.4 L at STP. 2 Al (s) + 6 HCI (aq) – 2 AICIS (aq) + |H2 (g) STARTING AMOUNT ADD FACTOR DELETE ANSWER RESET 2.02 6 2 2.93 3.65 3 1 1.62 6.022 x 1023 22.4 26.98 0.329 7.30 g/mol Al LAI g H2 mol H2 mol Al g/mol H2 LH2 g AI + 3. II

Options for 1)higher or lower Options for 2)higher or lower Options for 3)weaker or stronger