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Given a barometric pressure of 731.0mmHg , calculate the pressure of gas sample (b) as indicated by the manometer.
A saturated solution of calcium hydroxide contains .38 grams of calcium hydroxide in each 250 mL of solution. What is the pH of the saturated calcium hydroxide?
What is the elution order if these same compounds are separated on a silica column using a polar solvent such as water?
What is the final concentration of NaOH when 335 mL of 0.75 M NaOH are mixed with 165 mL of 0.15 M NaOH?
Strontium metal crystallizes in a cubic unit cell which has an edge length of 612 pm. If the mass of an atom of Sr is 87.62 amu, and the density of Sr metal is 2.54 g/cm3
Calculate the fraction of atoms in a sample of argon gas at 400K that have an energy of 10.0 KJ or greater.
a 150.0 g sample of metal at 80 c is added to 150.0g of H2O at 20 c. the temperature rises to 23.3 c. assuming that the calorimeter is a perfect insulator, what is the specific heat of the metal?
Calculate the amount of heat required to completely sublime 53.0 g of solid dry ice CO_2 at its sublimation temperature. The heat of sublimation for carbon dioxide is 32.3
To prevent tank rupture during deep-space travel, an engineering team is studying the effect of temperature on gases confined to small volumes. What is the pressure of 3.40mol of gas D measured at 251 C in a 1.75-
Find a) the average speed, b) the root-mean-square speed, and c) the most probable speed of these particles. Explain your results
what is the balanced equation of aluminum reacts with ammonium perchlorate to produce aluminumn oxide, aluminum chloride, nitrogen monoxide, and 110g of water.
What are the flight times of the singally and doubly-protonated ion forms of a 1735.4 Da peptide accelerated by a potential of 25.00 kV
Draw any resonance form and state whether it is more or less stable than the original. ( if this is explained i will reward all points)
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