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Which of the following pairs of atomic orbitals on adjacent nuclei can overlap to form a sigma bond? Consider the x-axis as the internuclear axis. Please explain.
A. 1s and dxy
B. 2px and 3px
C. 1s and 2py
D. 2py and 2py
E. 3py and 3pz
An elemental analysis of X shows that the mass percentage composition of the compound is 26.86% C and 2.239% H, with the remainder being oxygen. A mass spectrum of X yields a molar mass of 90.0 g/mol. Write the empirical formula of X.
Calculate the pH during the titration of 100.0 mL of 0.200 M HCl with 0.400 M NaOH. First what is the initial pH (before any NaOH is added)? What is the pH after 31.9 mL of NaOH are added?
At 0.0oC, if the volume of air is 2.5 mL and the pressure of the atmosphere that day is 835 mmHg, what is the number of moles of air?
what is the percent yield of CCl4 if 719 kg is produces from the reaction of 410. kg of CS2
How many non-bonding valence electrons are there in a molecule of fumaric acid?
A particulate water sample that is saturated in CaF2 has a Ca2+ content of 105 ppm (that is, 105 g Ca2+ per 10^6 g of water sample).
Calculate the total volume of gas (at 124C and 758mmHg) produced by the complete decomposition of 1.45 kg of ammonium nitrate.
Determine ?H for the formation of one mole of aluminium(III) oxide, Al2O3(s) from the elements?
A 4.70 g nugget of pure gold absorbed 285 J of heat. The initial temperature was 24.0°C. What was the final temperature.
Iridium-192 is often used in the head or breast. Answer the following three questions (a, b, and c) based on the radioactive decay curve of iridium-192, shown below. Click on the graph and move the mouse over a point to get values for that point.
What is the pH of a solution obtained by adding 75.0mL of 0.366M CsOH to 250.0 ml Ba(OH)2 solution with a pH of 11.65.
The gaseous product of a reaction is collected in a 25.0 L contained at 27 degrees Celsius. The pressure in the container is 216 kPa, and the gas has a mass of 96.0g. What is the molar mass of the gas?
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