Electron configuration and orbital energies
Despite the expected decrease in atomic size, there is an unexpected drop in the first ionization energy between Groups 2A and 3A in periods 2 through 4 (e.g., Be to B). Explain this pattern in terms of electron configuration and orbital energies.
Expected delivery within 24 Hours
A test tube containing a mixture of KCl, KClO3, and MnO2 having a total weight of 23.584 g was heated to compose the KClO3. After heating, the mass was found to be 22.347 g. a) How many moles of oxygen gas were evolved?
What are some differences and similiarities in the type of inhibition caused by heat, acid or base, and heavy metal ions on enzyme activity?
A buffer solution is prepared by adding 15.0 g NaC2H3O2 and 12.5 g acetic acid (C2H4O2) to enough water to make 500.0 ml of solution. What is the pH of the buffer solution? [pKa of acetic acid is 4.77]
What can you conclude about the reaction from the influence of temperature on the equilibrium. What can you conclude from the influence of increasing the volume.
A bicycle tire is filled with air to a pressure of 100. psi at a temperature of 19 degrees celcius. Riding the bike on asphalt on a hot day increases the temperature of the tire to 58 degrees celcius. The volume of the tire increases by 4.0%. What
When 10cm3 of a gaseous hydrocarbon CaHb was exploded with an excess of oxygen, a contraction of 35cm3 occured (all volumes are measured at rtp). On treatment of the product with NaOH solution, a contraction of 40cm3 occured. Deduce the formula of
A 40.0 mL sample of oxygen is collected by water displacement at 24.0 degrees celcius. What volume would the dry gas occupy at standard pressure if the original pressure is 98.5 kPa?
The rate constant for the reaction at 30oC is 0.120 L*mol-1*s-1. How long does it take an initial concentration of 0.150 mol/L to reduce to one-quarter the initial concentration?
1926460
Questions Asked
3,689
Active Tutors
1450858
Questions Answered
Start Excelling in your courses, Ask a tutor for help and get answers for your problems !!
Which stage in the development of adolescent romantic relationships is characterized by more enduring relationship bonds?
What is the role of knowledge-oriented leadership and employee retention in banks? What is the role of employee empowerment in customer retention?
Based upon your memos, dashboard, risks and mitigation strategies, and plan to address customer concerns. Your supervisor approved the people part of the transf
The purpose of this discussion is to help you begin developing your introduction for Paper 2 by choosing a topic, clearly stating your stance, and identifying
Explain how you would go about developing a ticket policy for your school that complies with the 2010 ADA requirements.
Termination of treatment can be tricky. Oftentimes, clients are not ready to discontinue treatment believing they require continued support
Choose one of the following controversial statements: Obesity is caused by a lack of willpower. There are large differences between men and women's cognitive ab