OC userin Chemistry·16 Nov 2017Contains Verified AnswerQ15. Which compound is more soluble in an acidic solution than in a neutral solution? a) PbBrz b) Cuci c) Agl d) Bar
OC userin Physics·14 Nov 20175.58 - A bowling ball weighing 71.2 N (16.0 lb) is attached to the ceiling by a 3.80-m rope. The ball is pulled to one side and released; it then swings back and forth as a pendulum. As the rope swings through the vertical, the speed of the bowling ball is 4.20 m/s. At this instant, what are (a) the acceleration of the bowling ball, in magnitude and direction, and (b) the tension in the rope?
OC userin Accounting·13 Nov 2017EXERCISE 5-3 Prepare a Profit Graph [L05-2] Jaffre Enterprises distributes a single product whose selling price is $16 and whose variable expense is $11 per unit. The company's fixed expense is $16,000 per month. Required: 1. Prepare a profit graph for the company up to a sales level of 4,000 units. 2. Estimate the company's break-even point in unit sales using your profit graph.
OC userin Chemistry·15 Nov 201725. Consider the reaction: 2 HBr(8) — H2(g) + Brz(8) a. Express the rate of the reaction in terms of the change in concentration of each of the reactants and products. b. In the first 25.0 s of this reaction, the concentration of HBr dropped from 0.600 M to 0.512 M. Calculate the average rate of the reaction during this time interval. c. If the volume of the reaction vessel in part b was 1.50 L, what amount of Brz (in moles) was formed during the first 15.0 s of the reaction?
OC userin Accounting·14 Nov 20177-6 Why are there two stages of allocation in activity-based costing?
OC userin Chemistry·14 Nov 2017Q3. Which idea came out of Rutherford's gold foil experiment? a) Atoms contain protons and neutrons. b) Matter is composed of atoms. c) Elements have isotopes. d) Atoms are mostly empty space.
OC userin Chemistry·12 Nov 201769. What are the products of each aromatic substitution reaction? H H + Br2 FeBry febrer CH3 + CH3-CH-a Ald;
OC userin Physics·14 Nov 20175.14. Three sleds are being pulled horizontally on frictionless horizontal ice using horizontal ropes (Fig. E5.14). The pull is of magnitude 190 N. Find (a) the acceleration of the system and (b) the tension in ropes A and B. Figure E5.14 30.0 kg 20.0 kg 10.0 kg Pull
OC userin Physics·14 Nov 201746. Calculate the free energy change for this reaction at 25°C. Is the reaction spontaneous? (Assume that all reactants and products are in their standard states.) 2 Ca(s) + O2(g) →→2 Ca(s) AHX = -1269.8 kJ; ASix = -364.6J/K
OC userin Physics·13 Nov 20172.60 . A subway train starts from rest at a station and acceler- ates at a rate of 1.60 m/s- for 14.0 s. It runs at constant speed for 70.0 s and slows down at a rate of 3.50 m/s- until it stops at the next station. Find the total distance covered.
OC userin Physics·12 Nov 20171.85 .. You are given vectors A = 5.0î – 6.5ị and B = 3.5î – 7.0ſ. A third vector, Č, lies in the xy-plane. Vector C is perpendicular to vector A, and the scalar product of Č with B is 15.0. From this information, find the components of vector C.
OC userin Chemistry·13 Nov 2017121. A 0.25-mol sample of a weak acid with an unknown pk, was combined with 10.0 mL of 3.00 M KOH, and the resulting solu- tion was diluted to 1.500 L. The measured pH of the solution was 3.85. What is the pKof the weak acid?
OC userin Physics·12 Nov 201725.21 . A current-carrying gold wire has diameter 0.84 mm. The electric field in the wire is 0.49 V/m. What are (a) the current car ried by the wire; (b) the potential difference between two points in he wire 6.4 m apart; (c) the resistance of a 6.4-m length of this wire?