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- 9:19 Question 14.b of 16 The value of Kp for the reaction 2 A(g) + B(g) + 3 C(g) → 2 D(g) + E(g) is 10490 at a particular temperature. Submit What does the magnitude of Kp tell us about the equilibrium position of the reaction? A) There are many more products than reactants. B) There are only a few more products than reactants. C) There are many more reactants than products. D) There are only a few more reactants than products. Tap here or pull up for additional resources9:43 Question 8 of 17 If the reaction quotient (Q) is larger than the equilibrium constant (K) for a reaction then which way will the reaction proceed? A) The reaction will proceed toward products B) The reaction will proceed towards reactants. Submit C) The reaction is at equilibrium and the reaction will stop completely. D) The reaction is at equilibrium and the reaction will proceed at equal rates in the reverse and forward direction. E) The reaction equation is required to answer this question. Tap here or pull up for additional resourcesQuestion 24 2 pts A radioactive material decays at a rate proportional to its amount. If the material has a life of 30 minutes, what percent of the original mass is expected to remain after 0.8 hours ?
- 3) The empirical formula of sugar is CH₂O and its molar mass is 180.2 g/mole. If one teaspoon of sugar weighs 3.50 g, how many moles of sugar and how many molecules of sugar are present? 4) A hydrate of copper(II) sulfate is 25.5% copper by mass. How many water molecules are there for each unit of copper(II) sulfate?A spontaneous exothermic reaction at a constant temperature and pressure of 50∘C and 2.0 atm has an enthalpy decrease of 350 kJ. This reaction performs 150 kJ of useful work, which is 54% of the maximum work that could be done. What is the reaction’s change of entropy? Express your answer to two significant figures and include the appropriate units.9:49 Determine if the following salt is neutral, acidic or basic. If acidic or basic, write the appropriate equilibrium equation for the acid or base that exists when the salt is dissolved in aqueous solution. If neutral, simply write only NR. Be sure to include the proper phases for all species within the reaction. CsBr 2- 3C₂²- + 1 2 3 4 (s) Question 10 of 11 H3O+ H₂O OH- Reset LO 5 Cs 6 Br NR 7 8 9 Tap here or pull up for additional resources Submit 个 O ĕ 11 (aq) x H₂O ( O H
- 4- The potential difference 2 points between two point in an electric circuit is 24 V, If 0.4 J of energy were dissipated in a period of 5 ms, what would the current be between the two points? *2.897 lb air is at 1 atm, 360 °R in a vertical piston-cylinder assembly. The air is compressed to state 2 at 111.6 atm, and 250.95 °R, and obeys the polytropic rule (pvn = constant). During the process, 170 Btu releases from the process in the form of heat transfer. Determine: The specific volume of the air at state 1 and state 2 in The work of the process in Btu. The specific internal energy of the air at state 2 in Btu/lb If the area of the piston is 5 in.2 and the mass of the piston is negligible, compute the force that exerts on the piston to maintain the pressure at state 2. Given that the atmospheric pressure is 1 atm.A bicycle wheel has a diameter of 64.6 cm and a mass of 1.87 kg. Assume that the wheel is a hoop with all of the mass concentrated on the outside radius. The bicycle is placed on a stationary stand and a resistive force of 125 N is applied tangent to the rim of the tire. (a) What force must be applied by a chain passing over a 8.96 cm diameter sprocket if the wheel is to attain an acceleration of 4.49 rad/s22? (b) What force is required if the chain shifts to a 5.57 cm diameter sprocket?
- 1-Metals are sensitive to fatigue and less resistant to corrosion due to stiffness modulus of elasticity ductility hardness 2- The ccramics strength in tension i . Than fatiguc strength in compression much higher much lesser equal higher 3- Materials with high electronegativity means the material * natural to electron reject electron accept electron reject electron 4- Fuoride has electronegativity ..Nitrogena)nigher than b) less than c) equal d) similar to less than oqual higher than similar toA The reaction does not occur at an observable rate when water is not present because it proceeds through a mechanism with a high activation energy. B The reaction is less thermodynamically favored because the Gibbs free energy of the product is greater when water is not present. C The product is not formed in measurable quantities because the equilibrium constant for the reaction when water is not present is significantly less than one. D The rate of reaction is much slower because the oxygen molecules collide with the iron surface with less energy when water is not present.An aluminum wire having a cross-sectional area equal to 4.60 x 10-6 m? carries a current of 7.50 A. The density of aluminum is 2.70 g/cm³. Assume each aluminum atom supplies one conduction electron per atom. Find the drift speed of the electrons in the wire. 1.95E-4 The equation for the drift velocity includes the number of charge carriers per volume, which in this case is equal to the number of atoms per volume. How do you calculate that if you know the density and the atomic weight of aluminum? mm/s