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How do I calculate how many grams of sodium sulfide are formed if 2.00g of hydrogen sulfide is bubbled into a solution containing 2.00g of sodium hydroxide, assuming that the sodium sulfide made from the reaction is a 92.0% yield?
Compute the mass of salt required to bring the freezing point of 200 mL of H 2 O from 0 degrees C to -5 degrees C.
What is the value of the rate constant at the temperature of this experiment. Give an answer with concentration units of molarity and time units of seconds.
03 mol sample of NH4NO3 is placed in a 1L evacuated flask, which is then sealed and heated. The NH4NO3 decomposes completely accodring to the balanced equation: NH4NO3-->N20+2H20 The total pressure in the flask measured at 400K is closest to which ..
what is the freezing point of an aqueous solution that has 25.0 g of glucose, C6H12O6 per 100.0g H2O (Kf=186C/M)
Calculate the pH of the following solutions with the given [H+] or [OH-] and indicate whether the solution is acidic or basic
A 27.21 g sample of a substance is initially at 25.4 °C. After absorbing 2591 J of heat, the temperature of the substance is 199.8 °C. What is the specific heat (c) of the substance?
An organic pesticide (MW 183.7) is 8.43% Cl. A 0.627 g sample containing the pesticide plus inert material containing no chloride was decomposed with metallic sodium in alcohol.
Calculate the pH during the titration of 20.00 mL of 0.1000 M HCOOH(aq) with 0.1000 M NaOH(aq) after 20.22 mL of the base have been added. Ka of formic acid = 1.8 x 10-4.
Draw an ideal distillation curve (temperature vs. milliliters of distillate) for a 50:50 mixture of two miscible liquids. How might one achieve such an ideal distillation
A solution contained KIO3 and excess KI. 25 cm3 of this solution were acidified and the liberated I2 required 26.8 cm3 of 0.1 M Na2S2O3 for complete recaction.
If 42.3 L of PH3 forms when 85.1L of H2 (g) reacts with 167.6 (g) of P4 at STP. What is the percent yield.
write the balanced equation for the reaction of the active ingredients in Gaviscon Extra strength with excess acid.
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