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If it takes 46.5 mL of .185M potassium hydroxide solution to neutralize 39.3 mL of sulfurous acid, what is the molarity of the sulfurous acid?
sodium azdide nan3 decomposes according to the following equation. what volume of n2 at 1.1 atm and 50.0c will be
Water autoionizes to produce hydronium ion and hydroxide ion. The product of the concentrations of these ions equals the water autoionization constant, Kw.
Exactly 100 mL of 0.12 M nitrous acid (HNO2) are titrated with a 0.12 M NaOH solution. Calculate the pH for the following. (a) the initial solution
When 0.512 grams of a substance is dissolved in 7.03 grams of naphthalene, the solution has a freezing point of 75 degrees celcius. What is the molar mass of the substance. Kfp for naphthalene is 6.80 degrees celcius/kg/mole.
Consider separate 1.0 L samples of the following gases at STP: Cl2, C2H6, and Xe. Which of the following statements are true regarding these gas samples? t/f The Xe gas sample has the highest density.
Approximately 35 mg of a dried brass sample (accurately measured) is put into a 250-mL Erlenmeyer flask. About 20 mL of H2O and 10 mL of concentrated HNO3 is added.
Consider a particle of mass m in a uniform gravitational field. Its potential energy is E(h) = mgh,where h is the height above sea level and g is the earth's gravitational constant, g = 9:8 m/s2.
If a solution containing 60.998 g of mercury(II) perchlorate is allowed to react completely with a solution containing 10.872 g of sodium sulfide, how many grams of solid precipitate will be formed?
Iodine-131 is a radioactive isotope. After 2.00 days, 84.2% of a sample of 131I remains. Explain what is the half-life of 131I
The design calls for reheating the liquid after the temperature has dropped to seventy degree Celsius the determine about how many stags and how many heaters are required for this process?
24.4 grams of metal was heated in boiling water and then dropped in a calorimeter containing 100 grams of water. The temperature before the metal was dropped in was 23 C and the final temperature was 25.1 C. specific heat
The few gas analysis shows as carbon dioxide 14%, carbon monoxide 0.4%, oxygen 5.6% and nitrogen 80%. The air used has a dew point of 50°F. The barometer shows 29.9 inches of mercury. Calculate the dew point of the stack gas.
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