Consider the two electron arrangements for neutral atoms A and B. What is the atomic number of A? A - 152, 252, 2p9, 351
B - 152, 252, 2p5, 5s
A.) 8
B.) 19
C.) 11

Agas at 155 kpa and standard temperature has an initial volume of 1.00 l. the pressure of the gas rises to 500 kpa as the temperature also rises to 135°c. what is the new volume? 2.16 l 0.463 l 0.207 l 4.82 l

Ibeg i need 20. a reaction produces 4.93 l of oxygen, but was supposed to produce 1 mol of oxygen. what is the percent yield?

How does concentration affect reaction rate