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Give the temperature and pressure at STP. A) 0 °C and 1.00 atm B) 0 K and 760 torr C) 25 °C and 760 in Hg D) 300 K and 1 torr Hg E) 0 °C and 1 mm Hg
Under the standard pressure, a pressure equal to 101,325 Pa (1 atm, 760 mm Hg) is assumed, and a temperature equal to 273.15 K (that is, for 0 °C). Therefore,...
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The total pressure of an O₂-Ar-He gas mixture is 1893 mmHg. If the partial pressure of Ar is 1100. mmHg and the partial pressure of He is 389 mmHg, what is the partial pressure of O₂
=341mmHg
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A bacterial culture isolated from sewage produced 35.5 mL of methane, CH4, at 31°C and 753 mmHg. What is the volume of this methane at standard temperature and pressure (0°C C, 760 mmHg)?
Volume of methane at standard temperature and pressure=31.59mL.
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If 20.0mL of 0.400M NaCl is added to 80.0mL of 0.900M NaCl. What is the resulting concentration of the NaCl?
Concentration of the NaCl=7.9M
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calculate the pH of the solution formed by mixing 10.0ml of 0.15M HBr with 20.0ml of 0.25M HCl
concentration of [H+] (from HBr and HCl) n(H+) = 0.15*10/1000 + 0.25*20/1000=0,0065 mol in 30 ml x mol in 1000 ml x=0.217 [H+]=0.217M
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Calculate the Qsp for the mixing of 30.0mL of 3.7 × 10^-3 M Sr(NO3)2 and 25.0mL of 0.02 M Na2SO4
Qsp of SrSO4 = Concentration of Sr2+ × Concentration of SO42- .= ( 30 × 3.7 × 10-6 ) / 55 × 10-3 × ( 25 × 0.02 ×...
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Calculate the pH of the solution that results when mixing 20.0ml of 0.1750M HCl with 25.0ml of a_distilled water b_0.132M NaOH c_0.132M NH3 d_0.232M NaOH
a) pH = -lg [H + ] C M = n/V n (HCl) = 0.1750 · 20.0 = 3.5 mmol C M (HCl) = 3.5 / 45.0 = 0.08 M...
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What is the new volume when 100.0 mL of a gas at 780.0 mmHg is changed to 760.0 mmHg?
p1V1=p2V2 V2 = P1V1/p2 = 100*780/760 = 102.63 (ml)
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if it takes 80.0ml of 1.500 M KOH to neutralize120.0ml of given H3PO4 solution, what is the molarity of this phosphoric acid solution?
The molarity is 0.33 M.The equation is:3KOH + H3PO4 → K3PO4 + 3H2OThe number of moles of KOH = 1.5mol/L*0.08L = 0.12 molFrom the equation the number of moles of...
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What volume (L) of O2 at 760. mmHg and 28 0C is needed to react fully with 3.8 g of C2H6 (ethane) at the same temperature and pressure?
Convert mass of C2H6 to molesn(C2H6) = m/M = 3.8g/30g/mol = 0.1267 mol2C2H6 + 7O2 = 4CO2 + 6H2OAccording to the equation, use simple proportion to find moles O2 required2...
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