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The principal quantum number (n): A. specifies the principal shell of the orbital. B. specifies the subshell of the orbital. C. specifies the 3-D shape of the orbital. D. specifies the maximum number of electrons. E. none of the above
Boyle's apprentice observes that the air trapped in air tube occupies 24.8 cm3 at 1.12 atm.by adding mercury to the tube increases the pressure on the trapped air to 2.64atm. assuming constant temperature, determine the new volume of air?
Find out the formula of the gas produced if Na 3 P(s) sodium phosphide, is reacted with H 2 O
The volume of a gas sample is 650. mL at STP. What volume will the sample occupy at 25.0°C and 950. torr pressure.
Calculate the pH of a solution formed by mixing 65-mL of 0.22M NaHCO3 with 75-mL of 0.15M Na2CO3.
Determine the concentration of the total available acid of the apple juice express your answer in moles/L?
What is the change in internal energy (in J) of a system that absorbs 0.588 kJ of heat from its surroundings and has 0.219 kcal of work done on it?
what is the grams of 9.31 x 10^24 molecules of methanol (CH3OH)? combining 0.357 mol of Fe2O3 with excess carbon produced 19.2g of Fe ; Fe2O3 + 3C ---> 2Fe + 3CO what is the actual yield of iron?
If the titrant has a molarity of 0.2750 M and there are 40.00 mL of analyte present, what is the molarity of the analyte?
a sample of gas mixture from a neon sign contains 0.0856 mol ne and 0.0254 mol kr. what are the mass percentages of ne and kr in the gas mixture?
Equal masses of water and ethylene glycol are mixed. What is the concentration of ethylene glycol in units of molality? The molar mass of water and ethylene glycol are 18.02 g/mol and 62.07 g/mol, respectively.
How many milliliters of 0.200 M NaOH will be required to titrate 19.6 mL of 0.479 M H2SO4
Acetylsalicylic acid (aspirin), HC9H7O4, is the most widely used pain reliever and fever reducer in the world. Find the pH of 0.018 M aqueous aspirin at body temperature (Ka at 37°C = 3.6 10-4).
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