What is the total number of electrons in the valence shell of an atom of aluminum in the ground state?

(1) 8 (3) 3

(2) 2 (4) 10

How many liters of 0.775 m solution can be prepared from 55.0 g of ammonium iodide?

A 96.0 ml volume of 0.25 m hbr is titrated with 0.50 m koh. calculate the ph after addition of 48.0 ml of koh at 25 ∘c.

why is the concentration of helium increased in some gas mixtures that divers breath in order to reduce the partial pressure of oxygen?

One city is located north of the equator and experiences average rainfall and warm temperatures. Another city is located exactly the same distance from the equator, but south. How will these two climate areas be the same or different? A.

List two traits that are similar between the puppies. your answer:

What was the result of the atomic theory?

Explain mitosis and meiosis in your own words.

What device changes mechanical energy into electrical energy? Question 4 options: transformer generator copper wire light switch

Reaction rates are affected by how often the particles collide true false

A 25 N and 5 N force pull to the right. Friction is 10 N. If the object is 5 kg, find the net force and acceleration.