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The pH of a lime is 7.5 What is the [H+]? Show Work on Scratch Paper!...
What is the pH of a cleaning solution with a [H"]=7.4x 10-6 MH+? Show Work on Scratch Paper! O 5.9 6.13 05.13 5.87
3 pts What is the correct formula of lead (II) nitride? Show Work on Scratch Paper! Pb2N3 OPEN2 O Pb3N2 OPEN O Pb2N2
Part A (Sketch the situation and show all your work clearly on the scratch paper.) Two long parallel wires carry currents of 20 A and 5.0 A in opposite directions. The wires are separated by 0.20 m. What is the strength of the magnetic field midway between the two wires? (M0 = 411 x 107 T:m/A) O 3.0 x 10-5T O 4.0 x 105T O2.0 x 10-6 T O 5.0 x 10-5T O 1.0 x 10-5T Submit Request Answer
What is the correct name of V205? Show Work on Scratch Paper! Divanadium pentoxide Vanadium (V) oxide Vanadium pentoxide Divanadium oxide Vanadium oxide
The molecular geometry of water is, respectively: Show Work on Scratch Paper! Trigonal planar Tetrahedral Trigonal pyramidal Bent O None of the above
Question 33 What is the H+ concentration of a solution with pH = 10.5? O 8.5 X 10-11 M O 3.2 x 10-8 M O 1.4 x 10-7M O 3.2 x 10-11 M
The (H+] in a cabernet wine is 3.8 x 10-4 M. What is the [OH-] in this wine? Show Work on Scratch Paper! 3.8 x 10-4 M 1.0 x 10-10 M 3.8 x 10-18 M 2.6 x 10-11 M 1.0 x 10-14 M
Single Replacement Question 18 1 pts **Show your work on scratch paper A student performed the stoichiometry lab' and investigated the decomposition of sodium bicarbonate by heating a sample of sodium bicarbonate in a crucible. They began the lab with a 4.234 gram sample of sodium bicarbonate. If the student assumed that the below! reaction that took place (producing sodium carbonate), what would be the theoretical yield of sodium carbonate? 2 NaHCO3(s) Na2CO3(s) + CO2(g) + H2O (8) 5.342 grams...
Part A Show all your work clearly on the scratch paper.) An electric field E = ( 2.0x105 N/C, right) causes the 5.0 g ball in (Figure 1) to hang at a 20° angle. (g = 9.8 m/s2) What is the charge on the ball? Express your answer in nanocoulombs. 10 AP ? 9- 89.2 nC Submit Request Answer gure < 1 of 1 Provide Feedback 20 Ë 9 5.08 Item 22 A capacitor consists of two 4.3-cm-diameter circular plates...
a) What is the pH of an aqueous solution with a hydrogen ion concentration of [H']-7.5 x10-3 M? Number PH- b) What is the hydroxide ion concentration, [OH-], in an aqueous solution with a hydrogen ion concentration of[H+] = 7.5x10-3 M? Number OH-]= c) A monoprotic acid, HA, dissociates: H A H+A HA The equilibrium concentrations of the reactants and products are HA]-0.240 M [H+] = 4.00 x 10-4 M A] 4.00 x104M continued below... Calculate the Kg value for...