3 attempts left Check my work Enter your answer in the provided box. Consider the reaction:...
5 attempts left Check my work Enter your answer in the provided box. Nitrogen dioxide is used industrially to produce nitric acid, but it contributes to acid rain and photochemical smog. What volume of nitrogen dioxide is formed at 725 torr and 28.2°C by reacting 3.31 cm of copper (d=8.95 g/cm) with 229 mL of nitric acid (d - 1.42 em 68.0% HNO, by mass)? Cu(s) + 4HNO3(aq) + Cu(NO3)2(aq) + 2NO2(8) + 2H20(1) 23.04 10
9 attempts left Check my work Enter your answer in the provided box. Calculate the volume (in liters) occupied by 1.59 moles of nitric oxide (NO) at 6.46 atm and 65°C 9.95
2 attempts left Check my work Be sure to answer all parts. Nitric oxide (NO) reacts with molecular oxygen as follows: 2NO(g) + O2(g) → 2NO2(g) Initially NO and O2 are separated in two different chambers connected by a valve. When the valve is opened, the reaction quickly goes to completion. Determine what gases remain at the end and calculate their partial pressures. Assume that the temperature remains constant at 25°C. Initial conditions are as follows: NO: 3.97 L, 0.500...
1.00 points 3 attempts left Check my work 2 Enter your answer in the provided box. The rate constant for the second-order reaction: 2NOBr(g) → 2NO(g) + Br2(g) is 0.800-s) at 10°C. Starting with a concentration of 0.86 M, calculate the concentration of NOBr Report problem Hint Solution Guided Solution after 67 s. Be sure to report your answer to the correct number of significant figures. References eBook &Resources
3 attempts left Check my work Enter your answer in the provided box. The reaction 2A B is first order in A with a rate constant of 2.8 X 10 Sat 80°C. How long in seconds) will it take for A to decrease from 0.750 M to 0.110 M?
1 attempts left Check my work Enter your answer in the provided box. For the simple decomposition reaction AB(g) → A(g) + B(g) rate = k[AB] and k = 0.25 L/mol's. How long will it take for [AB] to reach 1/3 of its initial concentration of 1.50 M? + = 8.00 S es
1 attempts left Check my work Enter your answer in the provided box. Roasting galena (lead(II) sulfide) is an early step in the industrial isolation of lead. How many liters of sulfur dioxide, measured at STP, are produced by the reaction of 4.55 kg of galena with 199 L of oxygen gas at 220°C and 2.00 atm? Lead(II) oxide also forms. 162. 3 L SO2
2 attempts left Check my work Enter your answer in the provided box. Hemoglobin is the protein that transports 02 through the blood from the lungs to the rest of the body. In doing so, each molecule of hemoglobin combines with four molecules of O2. If 1.59 g of hemoglobin combines with 2.47 mL of O2 at 37°C and 731 torr, what is the molar mass of hemoglobin? 1 x10 g/mol
3 attempts left Check my work Enter your answer in the provided box. What will be the final temperature of a 543-g sample of water, initially at 15.0°C, after 59.5 kJ have been added to it?
3 attempts left Check my work Enter your answer in the provided box. If 730 g of ethylene glycol (C2H602) is added to 1,000. g of water, what is the freezing point? C