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Which of the following combinations of hybridization and molecular geometry is possible?
a TIre has a volume of 535 cm3 at a temprature of 20 C while in use the temprature of the tire rises to 65 C calculet the new volume of the tire assuming a constant pressure and amount of air?
Deduce K0p and ΔG0 at this temperature if one assumes ideal gases. Calculate, also, the values of K0p and K0c at this temperature.
A 19.3 g mixture containing sodium sulfide and calcium chloride. 86.9% sodium sulfide and 63.9% by mass chlorine. what is the grams of chlorine?
Calculate the total volume of gas (at 128 and 745 ) produced by the complete decomposition of 1.67 of ammonium nitrate.
A 330 mL container holds 0.146 g of Ne and an unknown amount of Ar at 35°C and a total pressure of 626 mmHg. Calculate the moles of Ar present.
If the pressure increases to 800. torr, how many moles of gas were added to the container? Assume a constant-volume container.
The neutrons from one treatment source have an average velocity of 3.1 x 10^7 m/s. If the velocities of individual neutrons are known to within 2% of this value, what is the uncertainty in the posit
Write a 200 word essay in any style and identify and discuss three key features associated with the combustion of polymeric materials or compounds that are relevant to the safety.
What is the approximate frequency of a photon having an energy 4.85 X 10-19 J? (h = 6.63 x 10-34 Jxs)
A compound is 40.0 , 6.70 , and 53.3 by mass. Assume that we have a 100.- sample of this compound.The molecular formula mass of this compound is 180 . What are the subscripts in the actual molecula
If the titrant has a molarity of 0.2000 M and there are 50.00 mL of analyte present, what is the molarity of the analyte?
When 25.0mL of .500M H2SO4 is added to 25.0mL of 1.00M KOH in a coffee cup calorimeter at 23.50 degree Celcius, the temperature rises to 30.17 degree celcius. Calculate ethalpy of this reaction.
What proportion of the molecules have enough speed to escape when the temperature is (a) 240 K, (b) 1500 K? Calculations of this kind are very important in considering the composition of planetary a
The temperature rose by 0.910 K. In a separate experiment in the same calorimeter, the combustion of 0.825 g of benzoic acid, for which the internal energy of combustion is -3251 kJ mol-1, gave a te
In the reaction P4 + 5 O2 → 2 P2O5, how many moles of O2 are consumed each time 0.5 moles of P2O5 form?
KCl has the same structure as NaCl (Face-centered). The length of the unit cell is 628 pm. The density of KCl is 1.984 g/cm^3, and its formula mass is 74.55 amu. Using this information, calculate A
What will be the enthalpy change (to 2 significant figures) for the reaction when 1.5 g of lithium metal reacts with chlorine gas at constant pressure?
Write balanced molecular, ionic, and net ionic equations for the reactions of chromium (gives Cr3+) with solution of dilute sulfuric acid to give hydrogen plus the metal ion in solution (assume full
If a 10. m3 volume of air (acting as an ideal gas) is at a pressure of 760 mm and a temperature of 27 degrees Celsius is taken to a high altitude where the pressure is 400. mm Hg and a temperature o
What is the titer of the iodine solution of the .1137 sample of pure ascorbic acid, 26.75 mL I2 required to reach starch end point?
Are the two samples necessarily the same compound? How would you ascertain unambiguously that they were identical using TLC only? Be specific about your answer.
what mass of aspirin can be prepared by reacting 5.00 g if salicylic acid with an excess of acetic anhydride?
What advice would you give the company regarding environmental conditions that would maximize the percentage yield of ammonia?
Write the condensed electron configurations for the Cr^3+ atom. Express your answer in condensed form in order of increasing orbital energy as a string without blank space between orbitals. For exa