Question

PUH250, Al2(SO4)3 + 6H In the balanced equation (N2 + O2 + 2NO). How many grams of N, are needed to form or of NO? a) 14 g b) 60 g c) 28 g d) 20 g The gas law which relates the gas pressure and its Kelvin temperature for a fixed amoun at constant volume is ...... a) Boyle's law b) Avogadro's law c) Charles's law d) Gay-Luss = 293 Determine the volume of 10 g of helium gas (He) at 25 °C and 750 mm Hg. a) 20 L b) 53.5 L c) 0.07 L d) 61.98 L How many molecules are contained in 11.2 L of O, at STP? 223 a) 6.02 x 10“ molecules of Oz c) 12.04 x 10- molecules of O2 b) 3.01 x 1023 molecules of O2 d) 1.5 x 102 molecules of O2 What is the Molarity (M) of a solution prepared by dissolving 27 g of CaCl, in 2.0 L so (Molar mass of CaCl2 a) 0.3 M b) 0.6 M c) 0.15 M d) 3.3 M What is the concentration of a solution formed by diluting 10 mL of 6.4 M glucose : mL? a) 0.6 M b) 0.16 M c) 16 M d) 1.6 M c) H2SO4 d) HC The conjugate base of HSO4"? a) So. b) HSO3 Calculate the pH value of 0.001 M NaOH solution? ) 9 b) 3 c) 11 d) 7

Answer 1

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