Calculate the density of nitrogen at STP PDF

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Calculate the density of nitrogen at STP. 1.25 g/L Aqueous solutions of barium chloride and silver nitrate are mixed to form solid silver chloride and aqueous barium nitrate. The balanced complete ionic equation contains which of the following terms? 2Ag+(aq) When solutions of carbonic acid and copper(II) hydroxide react, which of the following are spectator ions? none of these What volume is occupied by 21.0 g of methane (CH4) at 27°C and 1.25 atm? 25.8 L Who was the first chemist to recognize patterns in chemical properties of the elements? Dobereiner What mass of NaOH is required to react exactly with 25.0 mL of 2.7 M H2SO4? 5.4 g A gaseous mixture containing 1.5 mol Ar and 3.5 mol CO2 has a total pressure of 7.3 atm. What is the partial pressure of CO2? 5.1 atm An atom of fluorine contains nine electrons. How many of these electrons are in s orbitals? 4 Which of the following exhibits the correct orders for both atomic radius and ionization energy, respectively? (smallest to largest) F, O, S and S, O, F Which of the following lists of atoms are arranged in order of DECREASING atomic radius? Li > N > O > F How many electrons can be contained in all of the orbitals with n = 4? 32 Aqueous solutions of potassium sulfate and ammonium nitrate are mixed together. Which statement is correct? No reaction will occur Choose the element with the highest ionization energy P In the reaction 2Cs(s) + Cl2(g) --> 2CsCl(s), Cl2 is the oxidizing agent The MnO4- is often used to analyze for the Fe2+ content of an aqueous solution via the reaction MnO4-(aq) + Fe2+(aq) + H+(aq) --> Fe3+(aq) + Mn2+(aq) + H2O(l) What is the ratio of Fe2+ : MnO4- in the balanced equation? 5:1 Which conditions of P, T, and n, respectively, are most ideal? low P, high T, low n Given reaction N2 + 3H2 --> 2NH3, you mix 1 mol each of nitrogen and hydrogen gases under the same conditions in a container fitted with a piston. Calculate the ratio of volumes of the container (Vfinal/Vinitial). 0.67 204 Nitrogen has five valence electrons. Consider the following electron arrangements.

2s 2p a) ¯ b) ¯ ¯ c) d) ¯ e) ¯ ¯ Which represents the ground state for N? option a When ignited, a uranium compound burns with a green flame. The wavelength of the light given off by this flame is greater than that of ultraviolet light Given the equation: 2KClO3(s) --> 2KCl(s) + 3O2(g) A 3.00-g sample of KClO3 is decomposed and the oxygen at 24.0°C and 0.717 atm is collected. What volume of oxygen gas will be collected assuming 100% yield? 1.25 x 10^3 mL...