random chemistry questions. best answer 10 points?

1. Determine the theoretical and percent yield of hydrogen gas if 84.0 g water undergoes electrolysis to produce hydrogen and oxygen and 3.17 g hydrogen is collected.

theoretical yield

g

percent yield

%

2. Titanium is a transition metal used in many alloys because it is extremely strong and lightweight. Titanium tetrachloride (TiCl4) is extracted from titanium oxide using chlorine and coke (carbon).

TiO2(s) + C(s) + 2 Cl2(g) TiCl4(s) + CO2(g)

(a) What mass of Cl2 gas is needed to react with 3.77 mol TiO2?

g

(b) What mass of C is needed to react with 3.77 mol of TiO2?

g

(c) What is the mass of all the products formed by reaction with 3.77 mol of TiO2?

g

3. Ammonium nitrate is a common ingredient in chemical fertilizers. Use the reaction shown to calculate the mass of solid ammonium nitrate that must be used to obtain 0.230 L of dinitrogen oxide gas at STP.

NH4NO3(s) N2O(g) + 2 H2O(g)

g

4. If you dilute 22.0 mL of a 3.5 M solution to make 276.1 mL of solution, what is the molarity of the dilute solution?

5. The partial pressure of CO2 inside a bottle of soft drink is 4.0 atm at 25°C. The solubility of CO2 is 0.12 mol/L. When the bottle is opened, the partial pressure drops to 3.0 multiplied by 10-4 atm. What is the solubility of CO2 in the open drink? Express your answer in grams per liter.

6. What is the percent by mass of NaHCO3 in a solution containing 60 g of NaHCO3 dissolved in 500 mL of H2O?

3 Answers

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  • Anonymous
    7 years ago
    Favorite Answer

    Yes

  • 4 years ago

    so as of the questions... 2 4 4 4.. P1V1/T1 = P2V2/T2 ? V2 = (P1/P2) x (T2/T1) x V1 = (P1/ 2P1) x (2T1 / T1) x V1 = V1 ? considering the fact that one million mole of an appropriate gasoline has quantity 22.4 L at STP, 2 moles has quantity = 40 4.8 4 3.. V2 = (P1/P2) x (T2/T1) x V1 if P2>P1 and T1 > T2, V2 < V1...ie.. if P will enhance and T decreases V will enhance ***** replace ***** no longer bs-ing it... question one million... a liquid has a distinctive quantity and takes the form of its containe a gasoline takes the quantity and shape of its field a reliable has a crystalline shape. no longer a gasoline a reliable or liquid crystal has shapes arranged in a familiar geometric trend. question 2 some assumptions that bypass into an appropriate gasoline. one million) debris holiday in a in the present day line until they collide with something 2) the quantity of gasoline molecules is negligible whilst in comparison with the full quantity of a gasoline 3) there are no intermolecular forces of charm 4) collisions are elastic (no internet loss of kinetic power) all of this are the definitions of a appropriate gasoline. if a real gasoline had those properties, it does not propose a deviation from appropriate. genuine gases, on the different hand, do have intermolecular forces of charm. and that's a deviation from ideality. question 3 appropriate gases do no longer molecular quantity appropriate gases can't be liquified. they haven't any intermolecular forces of charm. to condense, intermolecular forces of charm triumph over kinetic forces. appropriate gases do no longer charm to a minimum of one yet another leaves "are in random action".. that is actual question 4.. defined above question 5. no longer one million.. gasoline debris haven't any intermolecular sights no longer 2... gasoline debris holiday in in the present day lines in accordance to the assumption, until they stumble upon a wall no longer 3 ...gasoline debris have negligible quantity leaves 4... power is transferred between colliding debris question 6 defined above.. ******** questions?

  • 7 years ago

    You are asking too many questions all at once. Limit them to two questions at a time at the most.

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