What mass of (nh4)2so4 must be dissolved
what mass of (NH4)2SO4 must be dissolved in 0.100L of 0.350M NH3 to produce a buffer solution with pH 10.05?
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Steam at 10bar and 0.95 dry flows at 130 m/sec in a pipe. It is throttled to 8 bar and the flow rate is 12 kg/sec. Assuming velocity in the pipe on the down stream side of the valve is 160 m/sec.
A motor must be started and stopped from any one of three start/stop pushbotton stations.Each start/stop station contains one NO start pushbutton and one NC stop pushbutton.Motor OL contacts are to be hardwired.
which is a mixture of 80% aluminum oxide and 20 % aluminum nitride (% by mass). Use this information to determine the empirical formulas of aluminum oxide and aluminum nitride.
Which of the following acid-base pairs would work best for a laboratory experiment requiring a pH of 6.8? What molar ratios of the compounds would you use to prepare the solution?
The 0.8 kg collar slides freely on the fixed circular rod. Calculate the velocity v of the collar as it hits the stop at B if it is elevated fro rest at A by the action of the constant 40 N force in the cord. The cord is guided by he small fixe
A sled is traveling at 4 m/s along a horizontal stretch of snow. The coefficient of kinetic friction is 0.05 . Howfar does the sled go before stopping ?
R2 Deaker and C3 Phosphate are titrating 100 mL of monoprotic acid with a 0.5 M NaOH solution the equivalence point was reached after the addition of 15 mL. What is the concentration of the acid in molarity?
Draw the skeletal structure of the carbocation whose beta-deprotonation leads to the major organic product when 2,2-dimethylcyclohexanol is treated with concentrated sulfuric acid and heated.
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A 2-year-old girl is evaluated for cough, runny nose, watery eyes, and fevers for a week. She also developed a diffuse rash,
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