Answers by JensKaye7769

0 votes

57 views

How can X-ray fluorescence spectroscopy be used to accurately identify and quantify the presence of specific elements in a complex sample matrix such as soil or rock samples?

answered 6 days ago in Analytical Chemistry

0 votes

44 views

Calculate the enthalpy change of the reduction reaction of Fe3+ to Fe2+ when 1.44 g of Fe3+ ions are reduced using a standard hydrogen electrode (E° = 0.00 V) at 298 K. The balanced half-reaction equations are given below:Fe3+ + e- → Fe2+ ( E° = +0.77 V)H+ + e- → 1/2 H2(g) ( E° = 0.00 V)

answered Jan 23 in ThermoChemistry

0 votes

39 views

Calculate the energy required to break all the bonds in 1 mole of methane gas (CH4) at standard conditions, given that the bond energies of C-H and C-C bonds are 413 kJ/mol and 348 kJ/mol, respectively. Then, calculate the total energy released or absorbed during the combustion of 1 mole of methane gas with oxygen gas to form carbon dioxide gas and water vapor.

answered Jan 23 in Chemical reactions

0 votes

39 views

According to operant conditioning, what is the cause of phobias?

answered Jan 16 in Psychology

0 votes

29 views

Which system transports oxygens to cells?

answered Jan 8 in Science

0 votes

29 views

Which continent is the only one that reptiles don't inhabit?

answered Jan 8 in Science

0 votes

24 views

High decibel sounds can damage your?

answered Dec 30, 2024 in Science

...