Author Question: How many grams of H3PO4 are in 175 mL of a 4.00 M solution of H3PO4? A) 0.700 B) 20.0 C) 68.6 ... (Read 87 times)

savannahhooper · **on:** Aug 27, 2018

How many grams of H3PO4 are in 175 mL of a 4.00 M solution of H3PO4?

A) 0.700
B) 20.0
C) 68.6
D) 4.90
E) 612

Question 2

All of the subshells in a given shell have the same energy in the hydrogen atom. In a many-electron atom, the subshells in a given shell do not have the same energy. Why?

What will be an ideal response?

ErinKing · **Reply #1 on:** Aug 27, 2018

Answer to Question 1

C

Answer to Question 2

Hydrogen atoms have only one electron. Therefore, in a hydrogen atom, the energy of orbitals depends only on n. In many-electron atoms, electron-electron repulsion causes the energies of subshells in a given shell to differ.