Using ideal gas equation
PV = nRT
n = PV/RT
= 2.30×1.8/1000×0.0821×295
= 0.000171 mol
Mass of O2 = mole × molar mass
=> 0.000171×32 => 0.00547 g
See Periodic Table See HE A flashbulb of volume 1.80 mL contains O2(e) at a pres...
1st attempt di See Periodic Table See Hint In one demonstration of this reaction, 32.00 mL of H2 are collected over water at 25°C. Atmospheric pressure is 759.0 mmHg. How many grams of H2 are collected? g Hydrogen MacBo esc Fl F4 F5 F6 4
See Periodic Table See Hint Starting with 35.5 moles of O2 in a bottle calculate the volume of O, the bottle could deliver to a climber at an altitude where the temperature is -38.0°C and the atmospheric pressure is 0.282 atm. < 09/13 >
Part 1 (1 pt) See Periodic Table D See Hint Balance this reaction: x x. 'He , o, 2 HNO3 + Na,coz — 2 NaNO3 + CO2 + 420 Part 2 (1 pt) D See Hint If you have 520.0 g of HNO3 (63.01 g/mol) and excess Na2CO3, how many grams of carbon dioxide (CO2, 44.01 g/mol) will be produced?
Jad See Periodic Table See Hint The volume of ammonia gas at 0.990 atm of pressure is gradually decreased from 80.9 mL to 37.8 mL. What is the final pressure of ammonia if there is no change in temperature? atm
See Periodic Table See Hint How many grams of N are in 27.0 g of NH4NO3?
Ist attempt See Periodic Table O See Hi Calculate the final temperature of 100.0 mL of water (d=1.00 g/mL) at 20.2 °C 1% = 75.3 J/mol·°C)] after adding 100 mL of concentrated HNO3 (14.7 M, AH soln --33.3 kJ/mol).
alculating Partial Pressure ③ 15 or 15 Review Constants Periodic Table Part A calculations. essure of the gas partial pressures of . if you have a gon at 4 atm, then e the cylinder is A mixture of He, Ar, and Xe has a total pressure of 280 atm. The partial pressure of He is 0.250 atm, and the partial pressure of Ar is 0.400 atm What is the partial pressure of Xe? Express your answer to three significant figures...
3rd attempt See Periodic Table See Hint Fe(I) can be precipitated from a slightly basic aqueous solution by bubbling oxygen through the solution, which converts Fe(I) to insoluble Fe(II): 4Fe (OH) (aq)40H (aq) +0,(g) +2H,0(1) » 4Fe (OH)2(s) How many grams of O2 are consumed to precipitate all of the iron in 55.0 mL of 0.0950 MFe(II)? 2nd attempt <13/27 4 VIEW SOLUTION 18 OF 27 QUESTIONS COMPLETED SUBMIT ANSWER
A sample of argon gas has a volume of 735 mL at a pres-sure of 1.34 atm and a temperature of 132 ∘C. What is the final volume of the gas, in milliliters, when the pressure and temperature of the gas sample are changed to the following, if the amount of gas does not change? a) 682 mmHg and 325 K b) 0.95 atm and 85 ∘C c) 14.2 atm and -17 ∘C
11 Question (3 points) @ See page 253 Use the data in the table below to answer the following questions: Compound CH3NH2() O2(g) CO2(g) NO2(g) H2011) A Hºf (kJ/mol) -23.0 0.0 -393.5 33.2 -285.8 1st attempt Part 1 (1.5 points) See Periodic Table See Hint Methanol and methylamine are both combustible fuels. How many grams of methylamine must be combusted to raise the temperature of 377 g of water from 15.0°C to 46.0°C? Assume that the transfer of heat from...